GRANAB SUBFLOOR SYSTEMS For environmentally friendly and quieter indoor environments with comfortable flooring in homes, offices, schools and public buildings.
Welcome to Granab AB GRANAB manufactures subfloor systems for homes, offices, schools and public buildings. The systems feature steel floor girders with dampening elements for effective impact and airborne sound insulation. Granab subfloor systems are patented and type-approved with respect to sound-dampening properties, dynamic loads and strength. About 4 million m2 have been installed in various projects. Granab's main office is in Vårgårda, Sweden with production facilities in both Vårgårda and Lindköping.
Bygg- och Miljöteknik Granab AB Phone: +46 (0) 322-66 76 50 Fax: +46 (0) 322-66 76 55 E-mail: epost@granab.se www.granab.se Mailing address: P.O.Box 172 SE-447 24 Vårgårda Sweden Street address: Verkstadsgatan 4 Vårgårda, Sweden
2
CONTENTS: Granab Subfloor Systems System 3000 System information, dimensions, design
System 7000 System information, dimensions, design
Planning instructions
Load capacity, c/c distances, girders
Testing, certification, approval Material properties
Materials, environmental impact, durability
4–5
6 7 8–9
10–11
12
Alternative floor coverings Chipboard & carpet, chipboard & parquet, parquet, tiles
13
Tiled surfaces, bathrooms
14
Bathroom modules
15
Planning Drawings, delivery optimisation and installation drawings
16–17
Comfort-adapted deflection
18–19
Impact and airborne sound insulation 20–21 Impact sound reduction in the lab
22–23
Sound insulation measurements Subfloor HD/F 270 mm, System 3000 Subfloor HD/F 185 mm, System 3000 Subfloor HD/F 270 mm, System 7000
24 25–26 27
Offices, public buildings Sound insulation, comfort-adapted floors Planning, electrical – datacom – telecom
Ventilated subflooring Moisture, mould, radon Floor heating Waterborne floor heating Recessed convectors
28 29
30–31
32 33
Addition of levels to existing structures, attic conversions, wooden subfloors
34
Installation tools, accessories
35
Material specifications Systems 3000 and 7000
36
Detailed solutions, installation High level, plastic film, door openings
37
Examples of projects
38–39 3
Granab subfloor systems provide many benefits: Granab subfloor systems are constructed with non-deformable floor girders of galvanised steel and an effective sound-dampening resilient system. The subfloor system is secured to the subflooring with screws and set at the desired height. Surface flooring of either parquet, chipboard and parquet, or carpet is laid over the subfloor system. The Granab system contributes to improving the quality and environmental friendliness of homes, schools and public buildings. Effective impact sound dampening and airborne sound insulation for alternative sound classes. Dry installation method. Installed directly on untreated subfloors without wet surface levelling. Provides floors with adapted comfort for better living and working environments. Creak-free floors. The Granab system is environmentally friendly and consists entirely of non-organic materials, and is not affected by variations in humidity or temperature. Structural height from 30 to 420 mm excluding flooring. Special heights up to 1000 mm. Flexible line routing in space between the surface flooring and subfloor. Load capacity/m2 distributed load, 4000 kg. Ventilation systems for ventilated subfloors. Designed for various floor heating systems.
System 3000
The system facilitates future modifications or renovations. Comfortable, environmentally friendly floors. Low weight. Granab system weight, 5 kg/m2. Compared to conventional topping solutions, 100 – 200 kg/m2
4
System 7000
Granab Subfloor Systems More than 4,000,000 m2 of Granab's patented and type-approved subfloor systems have been installed in homes, offices, schools, shops and public buildings. Granab systems are type-approved, and tested and certified by the SP Technical Research Institute of Sweden with respect to sound-dampening properties, dynamic loads, durability and comfort properties. Granab systems are tested annually in various projects with respect to sound insulation and deflection properties, and an extensive technology bank with test documentation is available our customers.
Shape permanence Granab systems are designed with non-deformable galvanised steel girders. They retain their shape and are not affected by humidity or temperature variations. Other composite parts in the systems are also made of non-organic materials that do not absorb moisture. Granab systems – with guaranteed shape permanence – eliminate. for example, the risk of creaking or sag due to the effects of drying and moisture on girders, which is the case with girders made of organic materials such as wood.
Sound insulation Granab systems provide very effective impact and airborne sound insulation. Granab systems have been tested and type-proved for their sound-insulation properties by the SP Technical Research Institute of Sweden. Granab systems have also been tested in a large number of completed residential projects with respect to impact and airborne sound insulation for sound class B, as well as sound class A in certain projects.
Comfort In a good living and working environment, it is important that floors are not hard or entirely rigid, which can cause pain in the back and legs. Granab systems, with their integrated impact-dampening effect, provide comfortable floors with documented deflection properties for point loads.
Installation An installed floor's quality is dependent both on the choice of floor covering, and that the Granab system and the flooring covering are correctly installed. Granab has detailed installation instructions for the Granab systems in a separate pamphlet along with checklists for installation. Installation of flooring over a Granab system must be carried out in accordance with the flooring manufacturers' instructions. Laminated wooden floors must always be laid under controlled forms in compliance with the range of temperatures and relative humidity percentages stipulated by the respective manufacturers and suppliers of the flooring material.
Subfloors Hollow core slabs: Granab systems are commonly installed on hollow core slabs when the objective is to attain sound class A or B without additional topping (for more information, see pages 20–27). In situ cast subfloors: With Granab systems, subflooring can be cast thinner. A cast subflooring of approximately 300 mm can be reduced to approximately 200 mm, when structural factors permit, with retained or improved sound insulation. This produces a lighter overall construction and improved overall economy. Flexible line routing in the space between the subfloor and floor covering also facilitates future renovations. Wooden subfloors: Granab systems are installed directly on wooden subfloors so as to achieve improved impact and airborne sound insulation for the overall construction. Granab systems are, for example, widely used in attic conversions.
Planning and installation drawings Granab prepares plans and installation drawings for each room or building unit with detailed dimensions and locations of all included girders. See the examples on pages 14 – 15. The girders are cut according to the installation plans and all included adjustment units, including dampening elements, are pre-fitted at the factory. This ensures that all girders receive the right support without deviations.
5
Granab Subfloor System 3000 for adjustable heights 30 – 180 mm, excl. floor covering
26,5 17
45
17
79
MIn. height 30 mm
Max. height 180 mm
Section with support block and dampening element, level adjustment screw and concrete anchor
Construction heights: Flexible construction heights from 30 to 180 mm, excl. floor covering
22-mm parquet, alternatively 22-mm chipboard & 15-mm parquet or carpet
With supplementary sheet between the girders
20
600
600
General installation drawing, Subfloor System 3000 – Residential
400
600
600
600
600
600
600
400
NB: The c/c distance between girders is determined by the choice of floor covering. For other premises, see the c/c distance between floor girders on page 8.
6
Granab Subfloor System 7000 for adjustable heights 70 – 420 mm, excl. floor covering Special heights up to 1000 mm (see page 37)
40
Adjustment height 70–420 mm
45
Construction heights: Flexible construction heights from 70 to 420 mm, excl. floor covering. Special heights up to 1000 mm with masonite beams on girders (see page 37).
Section with support block and dampening element, level adjustment screw and concrete anchor
22-mm parquet, alternatively 22-mm chipboard & 15-mm parquet or carpet
20
600
600
General installation drawing, Subfloor System 7000 – Residential
400
600
600
600
600
600
600
400
20
NB: The c/c distance between girders is determined by the choice of floor covering. For other premises, see the c/c distance between floor girders on page 8.
7
Planning instructions for for various load conditions, Granab Subfloor Systems 3000 and 7000 Recommended c/c distances between floor girders (sections) and support blocks, Systems 3000/7000: 1. Rooms in dwellings, hotels, hospital rooms and staff rooms, c/c distance, girders (sections), 600 mm. 2. Assembly rooms such as classrooms, rooms in childcare centres, lecture halls, office rooms, premises for restaurants, cafes and dining halls, c/c distance, girders (sections), 400 mm. 3. Open areas in libraries, spaces with fixed seating such as in churches, theatres and cinemas, c/c distance, girders (sections), 400 mm. 4. Spaces without fixed seating in churches, concert halls, theatres, cinemas, museums, exhibition halls, retail areas in department stores and shops, gyms, sports centres, dancehalls, corridors in schools, etc., c/c distance girders (sections), 300 mm.
Load capacity For girder spacing for homes, c/c distance 600 mm = 4 tons/m2 The point load capacity and distributed load of various floor coverings installed on Granab systems are calculated according to the specifications of the respective flooring manufacturers.
System 3000 1st – 2nd girders, 400 mm
c/c distance between floor girders (sections), 600 mm
c/c distance between support blocks, 600 mm
Distance from wall, approx. 40 mm
System 7000 1st – 2nd girders, 400 mm Distance from wall, approx. 20 mm
8
c/c distance between floor girders (sections), 600 mm
c/c distance between support blocks, 600 mm
Planning instructions for various load conditions, Granab Subfloor Systems 3000 and 7000 The unique design of the Granab systems – with components of non-organic materials, steel girders, dampening elements and adjustment screws in various lengths – permits installation in many different types of projects and entails considerable benefits. The dampening element, which provides progressive resilience, makes the system an excellent choice for floors in sports centres and other multi-purpose areas, for example. The specified load capacity, 4 tons/m2 at c/c 600, can be significantly improved with tighter c/c spacing of both girders and adjustment units.
9
Granab Subfloor Systems typeapproved by the SP Technical Research Institute of Sweden Granab Subfloor Systems 3000 and 7000 have been tested and certified by the SP Technical Research Institute of Sweden with respect to load capacity, stability and durability with verified values for sound-dampening characteristics. Granab systems fulfil the requirements of paragraph 2 in the Swedish act (1994:87) on technical properties of constructions for intended usage – BVL. Certificate and type-approval number 19 21 01, 15 April 2008
Evaluation documentation Report 97B1, 9804 | Report P302700 | Report P302700A | Report P302700B | Report P302700C Report P302700D | Report P300682 | Report P300682A on dampening pads | IFP Research, 040317 Report, Assessment of flooring system IFP Research, 040206 | Report P302635 | Report P705473 Statement P705473A 10
Tested and certified by the SP Technical Research Institute of Sweden 2. Load testing, a separate support block/level adjustment screw
1. Deflection properties
10
12
See information on pages 18 – 19 Load testing of the support block was conducted by placing the support block with an adjustment screw between two steel sheets and applying a load using a hydraulic press. Force and deformation were registered. During testing, only 10 mm of the adjustment screw was threaded into the support block.
3. Deflection testing, section with spliced sheet (without dampening pad)
10
The deflection test was conducted by placing a steel rail in a hydraulic presswith two support blocks fitted at a c/cdistance of 600 mm. A point load was thereafter applied on the steel rail between the support blocks. Force and deformation were registered.
4. Fatigue testing of installed Granab floor construction
12
Fatigue testing was conducted over a support block by applying a pulsating load of between 0.1 Fk and 0.6 Fk 10,000 times at a frequency of 1 Hz. Fk was the characteristic value from support block load testing. A total of two fatigue tests were conducted over the support blocks at the outer corners of the test floor. The load was pulsated between 0.1 and 0.6 Fk with Fk set at 8.5 kN. Both load tests were conducted without any lasting deformations or damages.
11
Granab Subfloor Systems, materials, environmental impact, durability, specific product properties Granab subfloor systems Granab Subfloor Systems are designed for easy removal when necessary and for subsequent reinstallation as complete units.
Floor girders
Dampening elements
Material:
Galvanised steel, alternatively, untreated steel, thickness 1.5 mm
Environment:
Thin steel plate is a part of the ecosystem and processed into new steel in electro-steel works.
Functional dura-bility:
Galvanised steel has extremely long durability.
Material:
Elastomer, GRAB-310
Environment: No environmental impact, recyclable into new polyurethane products Resilience durability:
Total deflection (momentary + long-term creep) at 106 h (114 years)
GRAB-310
Relative thickness
For 12-mm thickness
≤ 17 % ≤ 18 %
≤ 2 mm ≤ 2.2 mm
P V
Functional durability:
Dynamic E-module Change ≈ 0 % ≈ 0 %
GRAB-310´s resistance to short-term extreme overloads is very high and the material springs back entirely if overloaded. The long-term creep has no effect on the material's dynamic E-modules. Elastomer has extremely long durability. Not affected by ozone, UV radiation or by commonly occurring chemicals.
Support blocks with adjustment screws Materials: Environment:
Functional dura-bility:
Polypropylene, Granab standard, according to DIN 53444 No environmental impact. Recyclable into new basic material. Very long according to the diagram
% 20 15 10 5 2 0 10°
2 N/mm2 101
102
103
104
105
106
h
(114 years)
12
Examples of alternative floor coverings Follow the instructions for installation and laying from the respective chipboard and parquet manufacturers. 22-mm chipboard & 15-mm parquet
NB: Use flooring paper as an interlayer between the chipboard and parquet.
22-mm chipboard & carpet
Gluing/screwing chipboard NB: Casco Superset no. 3879 or equivalent
22-mm parquet, floating or glued to the girders
Floating
Gluing, parquet
NB: Use intermediate strips of flooring paper.
NB: Casco Superset no. 3879 or equivalent
WC/Bathroom
Entrance/Hall
Tiles
13
Tiled surfaces Granab systems are installed as subfloor systems for tiled areas in halls and wet rooms in various construction projects. Granab systems – which consist entirely of non-organic materials – are not sensitive to moisture and at the same time, provide effective impact and airborne sound insulation. The girders are installed with c/c spacing of 300 mm.
Example, remodelling: Granab subfloor system, c/c 300 mm, with 22-mm chipboard, sheet of non-organic material, moisture barrier, tiles.
Bathrooms C B A
A: Chipboard flooring, 22 mm
B: Sheet of non-organic material
General drawing for tiled area
14 C
C
B
A
C: Floor levelling compound
Testing of Granab subfloor systems with tiled surfaces
Granab subfloor systems with tiling have been tested by the SP Technical Research Institute of Sweden with respect to deflection and strength properties.
Bathroom modules Complete bathroom modules Prefab bathrooms are becoming increasingly common in residential construction in Sweden. They have been widely used by our Scandinavian neighbours for several years. A Granab system combined with a prefab bathroom, entails a complete solution with many benefits, including effective sound insulation. The level difference between the subfloor and module is adjusted with the Granab system.
15
Planning, logistics efficiency Delivery optimisation Granab systems are packed and delivered with pre-cut and dimension-adapted floor girders and factory-fitted support blocks and dampening elements. Each girder is labelled with a room name and length that matches the information on the installation drawing for each flat or other agreed-upon space subdivision. Granab systems are packaged in bundles on EUR pallets with a maximum length of either 2600 mm or 3800 mm.
BALKONG CA 6,5 m2
2600 2600
1360
670
380
760
1520
1620
820
2360
300 830
1460
1360
300
360
2600
1080
2600
1080
2210 2600
310
500
2040
500 320
2600 2600
SOVRUM 3 2210 CA 11,5 m2 2210
1080
2600
2600
SOVRUM 2 CA2600 8,5 m2
2520
2210
1080
2600 2370
500
440
1360
2600
300
2450 1570
1100
1240
1620
2600
300
500
300
2460
450
2690
1520
2600
KÖK/V-RUM CA 30 1080 2600 m2 2600 (V-RUM CA 20 m2) 1080
2600
2460
2600 1630
1520
2600
730
2600
950 2530
2090
300
300
250
2000
1520
1470
1500
1500
650
850
1700 990
300
2360
300 530
300
2360
SOVRUM 1 CA2360 12,5 m2
300
500
2360
2360
300
2360 1970
HALL 2000
850
300
2600 850
2820
SOVRUM 2360 1 CA 11,5 2360 m2
300 1460
300
2360
1110
2450 2360
2600
2600
2600
510
1110
300
2600
1110
2600
300
2360
2600
1110
2600
2360 850 2600
1110
300
1520
2600
2600
2450
2600
BALKONG CA 6,5 m2
1110
300
2480
2600
2600
850
2600
500
1520
2600
2600 2600
1470
300
1110
2600
HALL1510
2380 2600
1110
2600
2600
1520
2600
2600
750
850 1460
1510
2600
WC/DUSCH CA 5,5 m2
KLK 1220 WC CA CA 2,5 m21310 E 1,5 m2
2820
1110
2390 2600
450
2600
340
1110
580
850 1550 1550
850 300
1230
2600
2600
1520
2600
2000
2450
WC/DUSCH CA 5,5 m2
1220
FRD 1430
2600
1460
2600
1520
2600
760
1310
8 520 30
2 m2 E CA 1520
1410
2450
WC/DUSCH CA 5,5 m2
1370
2600
KÖK/V-RUM CA 33 2600 m2 (V-RUM2600CA 23 m2)
2600
2380
640
2600 310
2600
500 360
2600 1320
1360
850
2430
950
1370
380
1370
2600
1070
2600
2600
1560
2600
1070
2600
2600
2430
1070
370
740
500 300
1320
1320 2600
1320 1320 950
2390
1070
2600 2600
2600
2340
850
KLK CA 23403,5 E m2 2340
520
m2
2580 850
HALL 2600
1550
2600
2600
300 850 2600
1460 850 KLK 1530
1070
KÖK/V-RUM CA 30 1070 m2 2600 (V-RUM CA 20 m2)
1070
640
1500
300
300
2450
2600 2600
1,5 E CA 1430
2120 310 1120
HALL
WC/DUSCH CA 5,5 m2
2360
340
960 1070
2600
2030
1370
2600
500
300
2350 2600
1620
2600
2600
1590
2460
2600
1200
500
2480
300
1460
1460
2280
2480
300
1370
2600
500 330
300
300
990
2010
2600
300
2360
2600
500
310 1370
2480
2360
2600 2290
2450 2600
2480
SOVRUM 1 2480 CA 11 m2 2480
300
2600
380
1370
300
1880
500
300
1500
1370
2600
2360 SOVRUM 2 CA 12,5 m22360
850 1740
850
570
300
2460
950
490
650
2600
300
2360
2460
2600
1320
1580
2600
530
2360
1810
1090
300
1810
2600
2250 2600
1090
1770
500
2600
2600 1320
2350
1520 1980
500
1090
2600
720
2250
2350 2600
300
2460 SOVRUM 1 CA 12,5 m2 2460
2250
1090
300
2600
2600
850 2600
1090 720
500 1600
2600
1090
330
2460
0
2600
KÖK/V-RUM CA 33 2600 m2 2600 CA 23 m2) (V-RUM
2250
SOVRUM 2 CA 2250 9 m2
500
2460
49
1090
2250
400
2250
2250
2260
2600
2160
BALKONG CA 6,5 m2
1090
1540
1090
2600
720
2600 2600
340
950
1080 500 300
960
2210 1930
BET
ANT
ÄNDRINGEN AVSER
SIGN
DATUM
KV.UGGLAN VEIDEKKE SVERIGE
BALKONG CA 6,5 m2
GRANAB AB BOX 172 447 24 VARGARDA UPPDRAG NR
RITAD AV
HANDLÄGGARE
Claes-Goran Andreasson
DATUM
ANSVARIG
SKALA
NUMMER
071116 GRANAB S-7000 PLAN 2-5 HUS 1 GR 1:75 1:50(A1)
Packaged and labelled for each flat 16
BET
Planning, logistics efficiency Interior walls for finished Granab subfloors Walls for flats or other subdivisions are first erected from floor to ceiling. It is advisable to erect interior walls within a flat or subdivision on finished Granab subflooring, including the chipboard. Erection of interior walls in this manner permits the chipboard to be installed quicker and entails less waste in that one is working with larger, continuous floor surfaces. Material consumption for the interior walls is lower and installation of both the Granab floor and interior walls goes significantly faster.
10x21M 10x21M
2600
2600
2600
2600 SOV2 6.6 m²
1
1
2600
2600
2600
2600
2600
2600
2600
2600
1910
2600
2600
2600
2600
2600
2600
2600
1910
2600
2600
2600
2600
2600
2600
2600
2600
1910
2600 2600
2600
2600
2600
1960
2600
1960
2600
2600
1960
2600
1960
8x21M
BOD 4.5 m²270
2600
STUE/KJØKKEN 28.4 2600 m²
8x21M
2600
1960
1950
2600
1950
2600
2600
2600
2600
SOV1 6.9 m²
9
2600
2600
2600
1
1950
10x21M
80
20
18
TERRASSE
920
2600 2600
2120
2420
0 53
32
2600
1880
2570
00 26
300
300
300 300
2600
380
2530 2460
300
2460
300
2460
300
TERRASSE 9.9 m²
300
BAD/VASK/OMKL. 7.4 2410 m²
300
10x21M
300
2410
300
2410
300 300 300
2
2600
300
600
2600
950 80
2600
SOV1 11.8 m²
2
2420 2420
2520
2510
2560
2440
410
24102520 2410
800
28x21M
6
2380
300
560 660
300
41
0
2380
2500
2520 1810
950
2600
950
2270 0
300
430
1400
2600
4
2600
2140
1 350
2600
2600
2600
2600
2600
2600
2600
2600
2600
1
1960
1960
2600
2
1480
10x21M
2600 2410
300
2
2600
1740
2600
1740
2600
1740
2330
1
2600
2600
2600
2600
SOV2 10.4 1740 m²
2600
2600
1740
2600
2600
1740
2600
2600
1810
1960
SOV2 6.6 1960 m²
8x21M
2460
2600
9
1960
5
2600
STUE/KJØKKEN 37.8 m²
1960
2600
1950
2600
2600
1950
2600
2600
2600
2600
BET
ANT
ÄNDRINGEN AVSER
SIGN
DATUM
KV.RONNVIKVEIEN
1950 2020
GVJ
9x21M
16
390
1970
9x21M
870
2600
2600
260010x21M 1480
10x21M
2600
1200
2410
11
2000
11
m²
2410
1430
2560
1680
2600
10x21M 2600 BAD/VASK/OMKL. 2600 7.5 2600 m²
1
2600 2600
2600
2600
1960
2600
STUE/KJØKKEN 2600 39.5 m²
1480
1
2600 2410
300
143010x21M
1230
2600
300
2600
5
430 2600
2600
2600
2600
300
1430
1430
300
2600
8x21M
1
2600
430 2600
2600
2600
2600
6
2
300
300
1
2600
340
HALL 1480 4.7 m²
2600
2600
2400
2600
430
2500
2600
5
2600
2600
2600
2600
2600
2600
2600
2600
9
2600
1580
4 1190
2600
SOV2 6.6 2600 m²
2600
HALL 7.8 m²
2600 2400
10x21M
300
410
1410
2330
1
2140
1430
2540
10x21M
2600
1430
2600
10x21M
WC
3.9 1680 560
2470
2600
940
1 2600 2600
1680
SKAP 2.6 2600 m²
940
2600 1880
1680
10x21M
2600
GANG 13.8 m²
10x21M
2600
940
1680 2400
2400
1010
2600
1430
HALL 7.8 m² 2600
1230
80 420
1
2600
2600
8
1500
EL-SKAP 0.6 m² 10x21M
1430
2600
2 1800 1680
2400
2600
1170
2600
2180
SKAP/BOD 3.2 m²
2600
11
300
2600
m²
1430
12 2600
8 SKAP
2600 2.6
2600
2600
1100
1170
2600
20
300 300
2520
1100 2470
2600
10x21M
1320
GANG 10.3 m²
2600
10x21M
2600
300
2410 2410
1100
10x21M 1100
1720
300
2410
10x21M
1100
1910
2600
12
300
2410
2
430
1500
10x21M
300
1100
680
2
1910
1910 8x21M 2600
440
STUE/KJØKKEN 40.7 m²
2600
11
820
2600
2600
950 2310
300
10x21M
820
2600
800
10x21M 2600
4.1 m²
400
300
2410
4.1 m²
10x21M 1600
820
2600
HALL 1100
HALL 1100
820 820
2600
9
1
820 820 820
BAD/OMKL. 2600 8.6 2600m²
2330
2410
1100
2600 950
2310
300
300
300
2410
1170
2600
2 600
950
24102520
1100
2400
SKAP/BOD 3.2 m²
2600
BAD/VASK/OMKL. 2410 7.4 m²
12
2600
2
1170
690
2400
9
9
2600 2400
2600
870 2600
10x21M
2600
10x21M
300
300
2600
2460
2600
90
660
10x21M
GANG 10.3 m²
2600
2380
300 10x21M
2600
2
680
2440
520
270
6
2380
2460
SOV1 11.8 m²
560
300 300
820 820
10x21M 560
4
300
10
1720
2530 2460
2440
m² 1870 1280
300
1890
2500
WC
1870 3.9
0
380
300
TERRASSE
40
0
53
2600
2600
1870
11
800
820
2600 2600 0
1400
2600
2600
32
00
26
2600
28x21M
820
8.6 m²
2600 2600
820
2600BAD/OMKL.
2 2600
880
TRAPPEROM 21.1 m²
2600
940
1320
1870
2000
820
2600
11
1870 2600
820
1810
2600 2180 1870 2 1970
1900
1010 820
2310
1 2560
2
2600
2600
950
940
2600
2600
2600
10x21M
2600
430
2600
10x21M 2600
2600 2600
880
400
2600
1 940
2420
2600
2600
950
10x21M 1550
2600 STUE/KJØKKEN 40.7 m²
2560
2600
1910
SOV11910 6.9 m²
1
2600
2600 2600
2600 SOV3 8.4 m²
9 10
2600
1980
SOV3 1910 8.4 m²
1
1790
1910
2600
2600 8x21M 2600
2600
2600
2600 2600
SOV2 6.6 m²
1
12
2600
390
2600
2600
2260
2600 410
2600
2600
2600
2600
1
6.9 m²
2600
2600 SOV1
2560
2600 2600
300
1980
TERRASSE 11.3 m²
TERRASSE 9.5 m²
GRANAB AB BOX 172 447 24 VARGARDA UPPDRAG NR
RITAD AV
HANDLÄGGARE
Claes-Goran Andreasson
DATUM
ANSVARIG
SKALA
NUMMER
080214 GRANAB S-7000 PLAN 1-4 HUS C
1:50(A1)
GR 1:73
BET
Intra-transport in conjunction with framework construction Because Granab systems consist of non-organic materials and are not affected by moisture or temperature variations, they can be delivered while the framework is still under construction. Granab girders can be produced with a maximum length of 2600 mm – the same length as for a bundle of plasterboard. The plasterboard for the walls can be moved in along with the wall girders, which are placed on stands above the Granab girder packages. By lifting the materials into place during framework construction and erecting the interior walls above the Granab system, workflow is more efficient and costs for logistics are minimised.
Girders are pre-cut to the correct lengths according to the drawing for each room unit. 17
Pleasant, comfort-adapted floors with Granab systems for a better working and living environment In a good living and working environment, it is important that floors are not hard or entirely rigid, which can lead to pain in the shoulders, back and legs. Granab systems, with their integrated impact-dampening effect, provide comfortable floors with documented degree of deflection for point loads. Deflection during application of point loads on floors laid on a Granab system is dependent on – besides the subfloor construction and c/c distance between the girders – the choice of floor covering and how installation is performed. The respective flooring manufacturers provide information about deflection for each type of floor covering. Deflection of the finished floor construction with a point load of 1 kN should not exceed 2 – 3 mm according to the SP Technical Research Institute of Sweden.
Deflection properties Example from test measurements of deflection when a point load is applied
9
Kraft (kN)
8 7 6 5 4 3 2 1 0 0
0,5
1
3 1,5 2 2,5 Deformation (mm)
3,5
4
Lab tests of deflection for various point loads 18
4,5
Testing and certification are conducted by the SP Technical Research Institute of Sweden. Contact Granab about full type-approval no. 192101. Granab systems with 22-mm chipboard and both 15mm or 22-mm parquet have been tested in a number of residential projects by the SP Technical Research Institute of Sweden with respect to deflection of the completed floors. The results show an average deflection within 2 mm of other measurement points in each flat with a point load of 1 kN. Documentation from measurements conducted by the SP Technical Research Institute of Sweden with alternative floor coverings from a large number of field measurements in completed residential projects can be provided by Granab upon request, as well as figures from lab measurements conducted by the SP Technical Research Institute of Sweden and measurements from a large number of assembled test floors in Granab's testing facility with alternative floor coverings. All measurement results are within the margins for recommended values.
Testing methodology for deflection of completed floors Non-deformable Because Granab systems are non-deformable and constructed entirely of non-organic materials, there will be no problems with sagging or creaking that can occur in conjunction with drying or creep of floor joists made of wood, for example, or other organic materials.
Floor coverings The choice of floor covering is an important factor for the final comfort of a completed floor. Point-load deflection for Granab systems is in compliance with the applicable standards and recommendations. For the entire finished floor construction (including the floor covering) to attain the expected comfort – besides the choice of floor covering laid over the Granab system – it is important that the both the Granab system and floor covering are installed by trained installers and floor-layers, and that the installation instructions and checklists are carefully followed.
Testing methodology for deflection of completed floors The SP Technical Research Institute of Sweden has developed a measurement method and device with digital deformation sensors for reliably and easily measuring deflection of completed floors. Please contact Granab for information about the measurement device and instructions for use.
Information to residents Granab systems provide pleasant and comfort-adapted floors for improved living and working environments. Floor constructions with parquet or other floor coverings on girders entail less elastic deflection in the floor layer when point loads are applied. In certain cases, residents who are accustomed to entirely rigid flooring on concrete subfloors may have questions about the floor construction and the new floors. Granab can provide separate information sheets for answering these questions.
19
Impact and airborne sound insulation Impact and airborne sound insulation in homes and offices Granab systems provide effective impact and airborne sound insulation. Effective insulation against sound from surrounding spaces is important for a good living and working environment. Investigations show that in older structures, residents are often disturbed by impact sounds, loud music, slamming doors and staircase traffic, as well as noise from running water, lifts, ventilation and traffic. A good sound environment has become a prioritised requirement when building new homes, and there are also more stringent requirements for quieter working environments in offices and schools.
Sound classification standards stipulate acoustic requirements for homes and other premises The Swedish Board of Building, Planning and Housing (BBR) has established a generally formulated requirement for acoustic environments, calling for buildings being designed so that residents and other occupants are effectively protected against noise. In a general recommendation, BBR mentions sound class C in the SIS standards SS 25267 (dwellings) and SS 25268 (other premises), where detailed requirements and verification methods are described. The recommendation also states that “if better sound conditions are preferred, sound class A or B can be selected.” In practice, dwellings are usually planned for sound class B to fulfil customers' wishes. The standards place special requirements on sound insulation for low frequencies, due to these frequencies having been found to be especially important for the subjectively perceived sound environment. Appendix B in SS 25267 provides guidance on how floor constructions can be chosen so that impact sound requirements are fulfilled, and how one can calculate which sound class will be achieved with a certain combination of subflooring and floor construction. In buildings with Granab's sound-dampening subfloor systems, significantly improved sound insulation of subflooring is achieved (even at low frequencies) in comparison with conventional, thin floor coverings. Installations run freely under a Granab floor do not produce structure-borne sound because they are not attached to the framework.
Documentation of Granab systems' sound-insulating properties Granab systems have been developed in close collaboration with researchers and acoustic consultants in the building industry to satisfy highly placed demands on impact and airborne sound insulation in homes, offices and schools. Granab systems function as supplementary insulation for building frameworks both in new construction and remodelling projects. The impact and sound insulating function of the systems has been carefully documented in accordance with the requirements of SS 25267 through, for example, lab measurements and a large number of field measurements in completed buildings. In this way, values for sound dampening could be established, permitting sound insulation in buildings to be verified with calculations as specified in SS 25267. Calculation of sound insulation in completed buildings shall be conducted according to the Swedish and European standard SS-EN 12354, Parts 1 and 2 with input data from Granab. Input data for concrete subfloors is in the BASTIAN database, as well as at www.byggamedprefaf.se and www.betongbanken.com. For lightweight subfloors, such as wooden subfloors, contact Granab. A number of examples of acoustic measurements in the SP Technical Research Institute of Sweden's impact-sound lab, as well as vertically between flats with Granab subfloor systems installed on hollow-core slabs HD/F 120/19 and HD/F 120/27 in buildings, are presented on pages 22–27.
SS 25267
Applicable sound class limits for dwellings Sound class according to SS 25267
*
Highest permitted impact sound level* L´n,w+ CI,50-2500
Lowest permitted airborne sound level* R´w+ C50-3150
A
48 dB
61 dB
B
52 dB
57 dB
C
56 dB
53 dB
Verification with calculations. When performing verification measurements, the requirement shall be fulfilled in average values, although deviations of no more than 2 dB are permitted in isolated cases as long as the average value is attained.
Accredited sound measurements in completed building with a Granab system on hollow-core slabs HD/F 185 mm and HD/F 270 mm Examples of measurement results
Impact sound L´n,w+ Ci,50-2500
Airborne Remarks sound R´w + C50-3150
Granab system, height 65 mm incl. floor covering laid on HD/F 270 mm
51 dB dB 46
65 dB
Granab system, height 70 mm incl. floor covering laid on HD/F 185 mm
51 dB
58 dB
Granab system, height 150 mm incl. floor covering laid on HD/F 185 mm
47 dB
61 dB
Granab system, height 165 mm incl. floor covering laid on HD/F 270 mm
50 dB
59 dB
System 3000 Also see measurement results for alternative configurations of Granab systems on pages 24 – 26.
System 7000 page 27
Presented field measurements with alternative configurations of Granab systems show impact and airborne sound values that comply with sound class B and in certain configurations, sound class A.
• The impact sound value shall be as low as possible. • The airborne sound value shall be as high as possible. 20
Sound class description, dwellings, according to SS 25267
Sound class A:
The sound class corresponds to very good acoustic conditions.
Sound class B:
The sound class corresponds to significantly better acoustic conditions than sound class C. This sound class should be applied when a good living environment is requested.
Sound class C:
The sound class provides satisfactory acoustic conditions for a majority of residents and can be applied as a minimum requirement according to the Swedish Board of Building, Planning and Housing's directives.
Remarks:
The function requirements in this standard are adapted to the respective sound classes on the basis of extensive practical experience of subjectively perceived acoustic environments in dwellings. It should be noted, however, that building constructions – for both practical and financial reasons – cannot be designed to entirely avoid audible sound from adjoining spaces from all types of activities. Audible sound can occur, for example, from jumping or substantial impact on a floor. even occur in buildings that fulfil the higher sound classes
Percussive sound:
Percussive sound is addressed in SS 25268 (version 2 2007) and referred to there as ”impact sound in same room”. The requirement stipulates that percussive sound shall be limited in spaces in which several persons are present more than temporarily, such as in large office spaces, nursery schools, etc. Guidelines for measurement and assessment of percussive sound are included in the SIS technical report 2007:15 (www.sis.se). The degree of percussive sound is dependent on the floor covering used. Contact Granab for more information prior to planning.
Conditions
Granab subfloor systems, including floor coverings, can be configured for various sound classes (A – C according to BBR and SS 25267/SS 25268).
Granab subfloor systems are constructed with non-deformable steel girders and an effective resilient suspension system. The subfloor systems are secured to stable subfloors with screws and set at the desired height. Floor coverings of the parquet or chipboard of your choice can be glued, screwed or laid floating. Hollow-core elements and solid subfloors do not require the application of levelling compounds when they are complemented with a Granab subfloor system, which means shorter construction times, reduced building humidity and increased flexibility. For a planned sound class between rooms in buildings with Granab subfloor systems to be attained both vertically and horizontally, it is important: • That the floor and wall constructions provide the correct conditions for attaining the correct sound class, which can be verified by calculating the sound insulation in unfinished floors and walls according to SS-EN 12354 or by measuring the sound insulation during the production phase according to the methods in SS 25267. Measurements are made before the underfloor system is installed with temporary actions taken during measurement to prevent Definition, airborne airborne sound leakage between measurement spaces. sound insulation: • That Granab subfloor systems are installed by trained installers and and in accordThe separating construction's capability to reduce ance with Granab's installation instructions and installation checklists. sounds that reach the • That Granab systems and the floor coverings can move freely and do not have rigid construction via the air. contact points against the building framework, for example, at attachments and leadthroughs. Definition, impact • That sound leakage through joints and installations in floors and walls is prevented. sound level: The sound pressure level • That flank transmission via attached constructions – exterior walls, subceilings, etc. – in a demarcated space is prevented. from a standardised impact sound device that • That sound transmission via ventilation ducts between flats does not occur. hammers on a floor. • For more information, see Granab's general delivery and sales terms. To ensure that planned sound classes are attained both vertically (between floors) and horizontally (on the same floor) in completed buildings, all components of the building construction must function in the correct manner. An acoustic consultant should be engaged to review planned building constructions (construction documents). During the construction phase, installation should be checked according to our checklists. 21
Impact sound reduction in the lab Granab subfloor systems have been tested by the SP Technical Research Institute of Sweden on a reference subfloor of 16-cm concrete according to the Swedish and international standard SS-EN ISO 140. The impact sound tests were conducted with15-mm parquet flooring on flooring paper, Granab's subflooring of 22-mm chipboard flooring that was glued and screwed to the 7000 system's steel sections, green Sylodyn速 dampening pads and spacer screws in the concrete subfloor. The dampening pads are built in under the steel sections and permit movements in the floor without impact sound being transmitted via the screws to the concrete subfloor. By comparing measured impact sound levels for completed floors with the levels attained for the lab's concrete subfloor alone, the SP Technical Research Institute of Sweden can present improvement values for the Granab system ( ) that were calculated in the one-third octave band according to ISO 140-8.
System 3000
System 7000
The improvement values from the lab can be used for calculating impact sound levels in buildings with other types of concrete subfloors in accordance with SS-EN 12354-2. Values for Granab systems and various concrete subfloors are in the database for the calculation programme BASTIAN. When calculating impact and airborne sound insulation in subfloors between rooms, the programme takes consideration to the effects of areas and room volumes, as well as adjoining structural elements, which enables both simple and cost-effective engineering of a building's sound insulation. The calculation results have been compared with a large number of values from field measurements and have been shown to agree well in regard to average values. Granab recommends maintaining a 1-dB margin when engineering against acoustic requirements in completed buildings in accordance with SS 25267/-68. 22
Impact sound reduction in the lab To facilitate comparisons of various floor solutions for dampening impact sound, there is a classification system in Appendix B of the Swedish standard for sound classification of dwellings (SS 25267). The impact sound classification is based on the weighed summation value w that the SP Technical Research Institute of Sweden calculates form 16 values in the one-third octave band (100 – 3150 Hz) according to SS-EN ISO 717-2. Buildings with concrete floors and coverings in impact class 7 normally fulfil BBR's requirements (sound class C). Granab systems produce 29 dB, which fulfils the highest impact sound class 8A. Floors in this class normally fulfil impact sound requirements for sound class A in buildings with concrete floors.
Guidance in the choice of floor coverings and upper flooring on thin concrete subfloors according to SS 25267 Appendix B, (<180 mm) In Appendix B of SS 25267, classification is conducted of floor coverings' impact sound dampening on thin concrete subfloors. The classification is made in seven different floor covering classes with descriptions of impact sound dampening for the respective floor covering classes. The highest floor covering class is class 8A, which the Granab systems fulfil by a wide margin. Wooden floors and carpet on a thin elastic mat normally fulfil impact sound class 7, which results in sound class C on the same floor. Floor covering class Criterion dB Significance/Application. Floor coverings that belong to the group 8A 25-28 can fulfil sound class A between dwellings when they are laid on concrete subfloors. For a full description, please refer to the standard SS 25267 (SIS proposal), www.sis.se
with Granab subfloor systems
29dB
23
Impact and airborne sound reduction, vertical, System 3000 Sound insulation measurements Granab subfloor system installed on HD/F 270 mm. Accredited sound insulation measurements according to: SS 02 52 54 - SS-ISO 717/1 and SS-ISO 717/2 conducted by Ingemansson Technology AB. Configuration Granab subfloor system installed on HD/F 270 mm and 22-mm chipboard & carpet
65 270
Measurement results Impact sound: Lnw+c 46 dB
Configuration Granab subfloor system installed on HD/F 270 mm and 22-mm chipboard & 15-mm parquet
65 270
Measurement results Impact sound: Lnw+c 43 dB
System 3000, airborne sound Referenskurva 0-mätning. B1-A1 Vertikalt System 3000 B1-A1 Vertikalt
Referenskurva 0-mätning. B1-A1 Vertikalt System 3000 B1-A1 Vertikalt
L´n,w+c = 84 dB L´n,w(8) = 84 dB L´n,w(8) = 46 dB L´n,w+c = 46 dB
Stegljudsnivå L10 dB 100
90
90
80
80
70
70
60
60
50
50
40
40
30
30
20
20
10
10
0
0
*2 63 125 250 500 1000 2000 4000 8000 80 160 315 630 1250 2500 5000 10000 50 100 200 400 800 1600 3150 6300
Airborne sound: Rw+c 65 dB
System 3000, impact sound
R´w+c = 58 dB R´w(8) = 59 dB R´w(8) = 67 dB R´w+c = 65 dB
Reduktionstal R´dB 100
24
Airborne sound: Rw+c 65 dB
*2 *2 63 125 250 500 1000 2000 4000 8000 80 160 315 630 1250 2500 5000 10000 50 100 200 400 800 1600 3150 6300
Impact and airborne sound reduction, vertical, System 3000 Sound insulation measurements Granab subfloor system installed on HD/F 185 mm Accredited sound insulation measurements according to SS-EN ISO 140-4-7 conducted by KM Akustikbyrån.
Configuration Granab subfloor system installed on HD/F 185 mm and 22-mm chipboard & carpet
70 185
Measurement results Impact sound: Lnw+c 51 dB
Airborne sound: Rw+c 58 dB
Configuration Granab subfloor system installed on HD/F 185 mm and 22-mm chipboard & 15-mm parquet
70 185
Measurement results Impact sound: Lnw+c 48 dB
System 3000, airborne sound
System 3000, impact sound Referenskurva 0-mätning. Vertikalt L´n,w = 80 dB L´n,w+c = 67 dB System3000 Vertikalt L´n,w = 49 dB L´n,w+c = 51 dB
Referenskurva 0-mätning. Vertikalt R´w = 57 dB R´w+c = 55 dB System 3000Vertikalt R´w = 62 dB R´w+c = 58 dB Reduktionstal R´dB
Airborne sound: Rw+c 59 dB
Stegljudsnivå L10 dB
90
90
80
80
70
70
60
60
50
50
40
40
30
30
20
20
10
10
0
0
63 125 250 500 1000 2000 80 160 315 630 1250 2500 50 100 200 400 800 1600 3150
63 125 250 500 1000 2000 80 160 315 630 1250 2500 50 100 200 400 800 1600 3150
25
Impact and airborne sound reduction, vertical, System 3000 Sound insulation measurements Granab subfloor system installed on HD/F 185 mm Accredited sound insulation measurements according to SS-EN ISO 717/1, 717/2 conducted by J&W Akustikbyr책n. Configuration Granab subfloor system installed on HD/F 185 mm with 22-mm chipboard above.
150
Measurement results Impact sound: Lnw+c 47 dB
185
Configuration Granab subfloor system installed on HD/F 185 mm and 22-mm chipboard, and 15-mm parquet above.
150
Measurement results Impact sound: Lnw+c 46 dB
185
System 3000, airborne sound
64
26
Airborne sound: Rw+c 61 dB
61
Airborne sound: Rw+c 63 dB
System 3000, impact sound
Impact and airborne sound reduction, vertical, System 7000 Sound insulation measurements Granab subfloor system installed on HD/F 270 mm Accredited sound insulation measurements according to SS-EN ISO 140-4-7 conducted by KM Akustikbyrån.
Configuration Granab subfloor system installed on HD/F 270 mm and 22-mm chipboard & carpet
150
Measurement results Impact sound: Lnw+c 50 dB
270
Airborne sound: Rw+c 59 dB
Configuration Granab subfloor system installed on HD/F 270 mm and 22-mm chipboard, and 15-mm parquet above.
150
Measurement results Impact sound: Lnw+c 48 dB
270
System 7000, airborne sound
System 7000, impact sound System 7000 Vertikalt L´n,w = 47 dB L´n,w+c = 50 dB
System 7000 Vertikalt Rw = 62 dB Rw+c = 59 dB Reduktionstal R'
Airborne sound: Rw+c 61 dB
Stegljudsnivå L'
90
90
80
80
70
70
60
60
50
50
40
40
30
30
20
20
10
10
0
0
63 125 250 500 1000 2000 4000 80 160 315 630 1250 2500 50 100 200 400 800 1600 3150
63 125 250 500 1000 2000 4000 80 160 315 630 1250 2500 50 100 200 400 800 1600 3150
27
Offices – Public buildings Impact and airborne sound insulation Granab subfloor system are installed in many office projects. Flexible line routing between subfloors and floor coverings entails major benefits while at the same time, the Granab system creates a good acoustic environment. Granab systems fulfil the acoustic requirements for offices in accordance with SS 25268 by a very wide margin.
Pleasant, comfort-adapted floors for a better working environment In a good working environment, it is important that floors are not hard or rigid, which can lead to pain in the shoulders, back and legs. Granab systems, with their integrated steel-dampening effect, provide comfortable floors with documented degree of deflection for point loads. Acoustic requirements, offices, according to SS 2 52 68 Airborne sound insulation, in accordance with SS 2 52 68 Lowest total airborne sound insulation between spaces Rw (dB) Type of space
Sound class B
Sound class C
Office room – along corridor Interview/conference room – along corridor
35 30 441) 352)
35 30 44 35
1)
For special requirements, 48 dB. 2) For rooms with glazed walls, 5 dB lower is acceptable.
Impact sound insulation, in accordance with SS 2 52 68 Highest impact sound level between different spaces, L´nw (dB) Type of space
Sound class B Sound class C
Office room, interview room Conference room, break room. – along corridor from other space
64 60
28
68 68
Configuration Granab Subfloor System 7000 incl. 22-mm chipboard & 15-mm parquet. Light weight wall erected continuously on Granab system incl. surface layer. Measurement results Impact sound: Lnw 59 dB Airborne sound: Rw 56 dB
Offices – Public buildings KONTOR
Example – Planning Electrical, datacom, telecom – Offices
GRANAB GOLVREGE LSYS SYSTEMBES KRIVNING EL
GRANAB AB
Uppdragsnumm er
System description – Electrical Granab subfloor systems permit distribution of supply systems for power, telecom, datacom, etc. Premises larger than 1000– 2000 m2 are divided into supply zones.
TEM
Datum
203939 2000-02-15
Rev. datum Uppr‰ttad av Granskad av
Jorkby, Ingema r
Godk‰nd av
Rullagergatan 6, 415 26
KM ELTEKN IK AB
Gˆteborg ∑ Tel: 031-727 www.km.s e
25 00 ∑ Fax: 031-727
25 01
Spaces – Central units The supply zone is equipped with a fixed unit (so-called island with toilettes, etc.) where central units for power, telecom, datacom, fire alarms, etc. are placed. Canalisation – Line routes The cable networks are run on cable trays or baskets under the floor along a primary route from the central units and on to the supply zone. The floor is equipped with access hatches over the route. From the primary route, the cables are run in installation conduits to the equipment locations (outlets). The system can be potential equalised.
Granab subfloor system installed in the Kv. Stallet project, Stockholm Remodelling into offices, library and other public premises
29
Granab ventilated subfloors If there is uncertainty and risk concerning humidity content or emissions form the bottom slab or subfloor construction, air gaps under the finished floor should be ventilated using mechanical ventilation in combination with the fitting of a moisture barrier under the floor girders. In its standard configuration, the height of the Granab system is adjustable from 30â&#x20AC;&#x201C;420 mm and provides an open airflow under the girders. The space under the floor constitutes a separate â&#x20AC;&#x153;room unitâ&#x20AC;? (sealed box) that is ventilated independently, or in special cases, in combination with other ventilation.
Order our ventilation pamphlet for more information.
System 3000 with moisture barrier above the girders
System 7000 with moisture barrier above the girders Granab can provide ventilation planning that even encompasses function, operation and maintenance instructions. Installation of ventilation is conducted by a local HVAC installer or building contractor.
30
Granab ventilated subfloors Granab ventilated subfloor principle Separate mechanical ventilation in â&#x20AC;&#x153;room unitâ&#x20AC;? under the floor using an exhaust fan that draws air out via perforated air ducts of, for example, standard spiral ducting. Inlet air to the ducts is obtained via a filter-equipped air terminal device that takes inlet air from the respective room units. Additional inlet air can be obtained with, for example, an additional outdoor air valve.
A large number of single-family dwellings and other buildings are subjected to moisture damage each year in basements, or elevated moisture content in basement slabs. Besides performing checks and taking possible measures involving new drainage and filling materials around the structure, the wooden joists or plastic floor covering installed or placed directly on the basement floor must be removed, followed by drying of the concrete floor. Do not build in moisture! Moisture from concrete floors in basements or bottom slabs must be removed through ventilation and not built into the floor construction. A Granab system with floor girders of galvanised steel and no organic materials is adjusted up from the concrete floor to the desired height and air in the space between the subfloor and surface flooring is constantly extracted using ventilation. Granab systems with sound-dampening elements provide comfortable floors with good acoustic properties.
Avoid moisture, mould and stale indoor air â&#x20AC;&#x201C; install a Granab system with underfloor ventilation.
31
Floor heating installed in Granab systems Floor heating is installed in Granab systems in increasing numbers of residential projects. Granab systems with steel floor girders is entirely non-deformable and not affected by temperature variations, which is a major advantage in avoiding subsequent floor construction problems. Installation of most available floor heating systems with Granab Subfloor Systems 3000 and 7000 provides significant benefits.
When choosing waterborne floor heating, two alternative primary systems are installed in Granab Subfloor Systems 3000 and 7000: Floor heating in 22-mm chipboard flooring with grooves
Grooved 22-mm chipboard flooring that is glued and screwed in place on the Granab girders. Floor heating plates are fitted in the grooves to distribute the heat from the tubes to the floor. The floor heating tubes are then pressed into the heat distribution plates. Floor covering 15-mm parquet is laid directly on the floor heating installation, possibly with an underlying moisture barrier. It is important that installation instructions from the flooring manufacturers are carefully followed.
For detailed information, order our floor heating pamphlet.
Floor heating in sealed floor heating units
Heating coils are installed in the floor heating units. The sealed unit/floor plate is fitted parallel to the subfloor system's girders and on the sealed unit brackets, which are mounted between the girders (System 7000). Standard spacing between joints, c/c 600. Floor covering 22-mm chipboard flooring & carpet or 15-mm parquet, alternatively, floor mortar & tiles
32
Floor heating installed in Granab systems Recessed convectors
On many residential projects, solutions with recessed convectors are preferred; for example, when there are glazed floor-to-ceiling facades and downdraughts are to be avoided, but an attractive solution is also desired without visible radiators. In these cases, installation of a Granab subfloor system is very beneficial in that the space between the subfloor and finished floor can be utilised.
Examples of projects with floor heating/recessed convectors
Project: Kv. Klabben, 6000 m2, Stockholm Client: Folkhem AB
Project: Sickla Udde, 5000 m2, Stockholm Client: NCC AB / Familjebost채der
33
Granab systems with floor additions Granab subfloor systems have been installed in a large number of projects where low weight, in combination with effective impact and airborne sound reduction, is prioritised. Granab systems entail: Low weight/m2. Approximately 5 kg/m2 in comparison to corresponding 10-cm conventional topping solutions: approximately 240 kg/m2.
Project: Client:
Gånglåten, 6000 m2, Göteborg PEAB AB / Bostads AB Poseidon, Göteborg
Granab systems in attic conversions for flats
Project:
Attic conversion, 500 m2, Stockholm
Granab systems on wooden subfloors Granab subfloor systems can naturally also be installed on wooden subfloors. For attachment, wood screws are used instead of concrete anchors. Contact Granab for more information.
34
Installation tools, Granab Subfloor Systems 3000 and 7000
Mandrel for recessing in predrilled holes
Screwing tool for adjusting floor girder heights For screwdrivers Short model: Cat. no. 8100 Long model: Cat. no. 8200
Drill bit for recessing adjustment screws in girders Cat. no. 8600
Mandrel for final fixation
Mandrel for installation of concrete anchors (1 of each included) Cat. no. 850 A Length 250 mm Cat. no. 850 B Length 500 mm Cat. no. 850 C Length 1000 mm
Screwing tool for manually adjusting floor girder heights Short model: Cat. no. 8300 Long model: Cat. no. 8400
Concrete drill bit for concrete anchors. Cat. no. 8700, 250 mm, short Cat. no. 8800, 460 mm, long
Installation pipe for concrete anchors Cat. no. 8900
For detailed information, order our installation instructions and DVD.
Accessories Girder spacers
Cat. no. 9300 9400 9500 9600
Tool Girder spacing 300 mm Girder spacing 400 mm Girder spacing 500 mm Girder spacing 600 mm
Automatic screwdriver
Chipboard flooring screws Insulation bracket, system 7000 Fรถr isoleringstjocklek A 20
Automatic screwdriver type HILTI, 4000 rpm unit. For chipboard flooring screws. Contact Granab.
Self-tapping screws for chipboard. Contact Granab.
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Insulation thickness, A mm: 40, 80, 120 or as agreed. Cat. nos. 7040, 7080, 7120
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Material specifications, Granab Subfloor System 3000
Support block with dampening element, adjustment screw and concrete anchor. Cat. no. 3001
Floor girder section Cat. no. 3010
Material specifications, Granab Subfloor System 7000
Adjustment screws are available in standard lengths: 40, 65, 125, 150, 250 and 400 mm Special lengths can be provided. Support block with dampening element, adjustment screw and concrete anchor. Cat. no. 7001
Floor girder section Cat. no. 7010.
Granab subfloor system installed in project at University of Ă&#x2013;rebro
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Installation example High height As standard, the level of Granab Subfloor System 7000 can be adjusted up to 420 mm. If heights are preferred up to approximately 1000 mm, masonite beams are fitted to the Granab girders. Masonite beams are available in various heights and lengths. Masonite beams are attached to Granab girders with self-tapping screws. NB: Mounting screws may not come in contact with adjustment screws/ blocks.
For detailed information, order our installation instructions and DVD.
Plastic film NB: The plastic film is installed above the girders â&#x20AC;&#x201C; not directly on the concrete subfloor. Installation, floating parquet. Granab systems, including girders, are entirely non-organic and not affected by moist environments. By placing the plastic film over the girders, effective, long-lasting moisture protection is obtained against the floor layer above.
Door openings
Installation, floating 22-mm chipboard Granab systems, including girders, are entirely non-organic and not affected by moist environments. By placing the plastic film over the girders, an effective moisture protection is obtained against the floor layer above.
System 3000
System 3000 A board is placed on the girder flanges as a foundation for subsequent installation of a door threshold or cover moulding (NB: Not chipboard).
System 7000 The girder is installed at the centre of the door opening so that the board has the same height difference as other girders. The board shall be screwed and glued to the girder in the door opening. The board is used for subsequent installation of a threshold or cover moulding.
System 7000
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Examples of installations
Project: Gåshaga, 48,000 m2, Lidingö
Project: Sjölyststranda, 9,000 m2, Oslo
Client: Skanska AB
Client: Veidekke ASA
Project: Sickla Udde, 45000 m2, Stockholm Client: Skanska AB
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Project: Lillåudden, 12,000 m2, Västerås
Project: Hamar Bryggeri, 12,000 m2, Hamar
Client: PEAB AB/Mimer AB
Client: Backe-Gruppen AS
Project: Kv. Mältplåten, 6,000 m2, Stockholm
Project: Sentrumgården, Bodö 14,000 m2
Client: Skanska AB
Client: Barlindhaug AS/Skanska AS
Examples of installations Project: Kv. Hjässan, 9,000 m2, Halmstad Client: NCC AB/Anjo Bygg AB
Project: Kv. Amnetisten, 9,000 m2, Solna Client: Skanska AB
Project: Sannegårdshamnen, 13,500 m2, Göteborg
Project: Kv. Tastagate, 3,000 m2, Stavanger
Client: JM AB
Client: Skanska AS
Project: Hotell Haga, 4,500 m2, Stockholm Client: PEAB AB
Project: Norconsult, 3,100 m2, Sandvika
Project: Kv. Kajkanten, 7,200 m2, Göteborg
Client: AF Skandinavia AS
Client: JM AB
See Granab's reference list for more projects.
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Printing: Rydins Tryckeri AB Layout: blomill.se
Version 7. October 2008
Bygg- och Miljöteknik Granab AB Phone: +46 (0) 322-66 76 50 Fax: +46 (0) 322-66 76 55 E-mail: epost@granab.se www.granab.se Mailing address: P.O.Box 172 SE-447 24 Vårgårda Sweden Street address: Verkstadsgatan 4 Vårgårda, Sweden