ACO Technologies - Rainwater Outlets by Michael James

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ACO Building Drainage watertight rainwater outlets for flat roofs and other areas

Product Catalogue and Specifiers Design Guide - 3 rd Edition

Certificate No. FM13502

ACO Building Drainage

Our built environment is becoming ever more complex. Applications are becoming more sophisticated and the increasing pressure of regulations and standards make achieving design, performance and financial goals ever tougher. ACO Building Drainage is a new concept within the ACO Group. Our mission: to eliminate design risk, to reduce installed and life cost and to deliver exceptional finish and performance in every product application.

ACO Building Drainageâ&#x20AC;&#x2122;s extensive portfolio includes:

Stainless steel Modular Channel system

Stainless steel EuroGully gully system

Stainless steel and polymer composite access covers

Biological Grease Management system

Gravity Grease Separator system

Anti-flood protection valves

We achieve this through three factors:

Stainless steel socketed pipe system

High performance materials

Rainwater outlets for flat roofs

Design experience and project support

Global manufacturing capacity

ACO Building Drainage is a division of ACO Technologies plc and part of the worldwide ACO Group. The Group has sales in excess of ÂŁ300 million worldwide with production facilities in the UK, Germany, France, Switzerland, Denmark, Spain, Poland, Czech Republic, Australia and the USA. In total more than 3000 people are employed in 30 countries throughout the world.

Our global resources and fabrication capacity make it possible for us to deliver best value, both with our standard products and with our bespoke designs. Confidence is further assured with quality systems that are in accordance with ISO 9001-2000.

Tel:

01462 816666 Fax:

01462 851490 e-mail Enquiries:

buildingdrainage@aco.co.uk website:

www.acobuildingdrainage.co.uk

Flat Roofs

The Need for Rainwater Outlets

Contents

Over the past few years, there have been major advances and improvements in the materials used in modern roofing technology. The specifier now has renewed confidence to take full advantage of the benefits of a flat roof and low pitched roof design concept.

Any flat area needs careful design to ensure efficient removal of surface water. Traditionally, water from a flat roof or other structure is channelled by way of a slope to a rainwater pipe. Leaks can often occur at the junction of the membrane and the rainwater pipe.

Hydraulic Design

Flat roofs allow greater planning and design flexibility - roof-top gardens, terracing, patios, car parks, building services and ventilation equipment, delivery areas and provision for adding additional storeys at a later date. All can be accommodated in a flat roof design.

To overcome this potential problem, ACO Building Drainage rainwater outlets provide a watertight joint between the membrane and the outlet by mechanically clamping the membrane to the sump unit. Tried and tested for over 40 years, ACO Building Drainage outlets have been used successfully on all types of flat roof construction.

Extensive or irregular shaped buildings can be roofed more quickly, easily and cost effectively than a pitched roof.

Introduction

Considerations Overview

Geographical Location

Flow Rate Calculation

Effective Catchment Area of Roofs 5 Practical Design Tips

Product Ranges HP (High Performance) Range & Accessories

Internal condensation is less of a risk because a flat roof uses less airspace than a pitched roof. In addition, the need to heat and illuminate voids is eliminated.

FreeDeck Drainage System

Architectural Eaves Treatments

Flat roofs allow easy access to natural light and because of the simple construction, internal partitioning is easy. This is especially advantageous for commercial or industrial buildings.

Appendices Material Selection

Typical Roof Construction Detail

Installation Guidelines

Flexible Pipe Couplings

HP (High Per formance) range of outlets Performance) provides rainwater drainage solutions for a wide range of applications.

Design Considerations

Hydraulic Design Considerations

Overview

Geographical Location

Flow Rate Calculation

The following notes are intended as a guide to the specifier who is designing a rainwater drainage system for a roof. It is recommended that reference is made to British Standard BS EN 12056 : 2000 Gravity Drainage Systems Inside Buildings - Part 3 : Roof drainage, layout and calculation for a comprehensive design guide.

Rainfall intensity has a direct impact on the performance requirements of any rainwater drainage system. For roofs and paved areas, it is normally impracticable to guard against very infrequent, extremely heavy rainfall situations and so the designer should aim to strike a balance between the cost of the drainage system, the risk category of the building and the frequency and subsequent consequences of flooding.

The flow rate Q, from roofs, paved areas and vertical walls and surfaces is calculated as follows and assumes that all surfaces are impermeable:

The drainage system for roofs and paved areas should be capable of coping with the intense rainfall that accompanies summer thunderstorms.

A = Effective catchment area (m²)

For any rainwater drainage system to work effectively and reliably, due account must be taken of the following considerations: ■

Geographical location

■

Rainfall intensity

■

Effective catchment area of roof

■

Risk category of building

■

Hydraulic capacity of the drainage system(s) employed

The UK experiences complex and varied rainfall patterns. For example, surprisingly, although the upland areas of northern and western parts of the British Isles experience higher average annual rainfall than the lowland areas, the lowland areas experience more frequent and more intense short duration rainfall than the upland areas. British Standard BS EN 12056 : 2000 may be referred to for further information and guidance on this topic. A rainfall intensity of 75 mm/hr (0.02 l/s/ m2) is used throughout this design catalogue.

Q = A x I litres/second 3600

where Q = Volumetric flow rate (l/s)

I = Rainfall intensity (75 mm/hr)

Pitched Roofs

Flat Roofs & Paved Areas

The effective catchment area of a freely exposed pitched roof draining to an eaves or parapet wall gutter is equal to the plan area of the roof plus half its maximum elevation area.

For a monopitch flat roof or paved area with a freely exposed horizontal surface, the effective catchment area is equal to the plan area of the area to be drained as shown below:

Design Considerations

Effective Catchment Area of Roofs

Catchment Area B = a x b (m²)

All linear dimensions in metres. Figure 2. Monopitch Flat Roof Catchment Area A = (f x l) + (g/2 x l) (m²) = l(f + g/2) (m²)

All linear dimensions in metres. Figure 1. Pitched Roof

For a flat roof with a dual pitch, split the roof up into discrete areas to isolate the catchment areas as follows:

Catchment Area C = c x d (m²) Catchment Area D = c x e (m²)

All linear dimensions in metres. Figure 3. Dual Pitch Flat Roof

Effective Catchment Area of Roofs

Flat Roofs & Paved Areas with Adjacent Vertical Surfaces

Design Considerations

Flat roofs or paved areas that are adjacent to vertical walls and/or glazed surfaces will be subjected to an increased hydraulic load due to the effects of wind driven rain against these vertical surfaces and subsequently running off onto the roof.

Similarly, for a flat roof exposed to two or more vertical walls forming an angle or bay, the assumed resulting wind direction requires that the combined areas of the walls should be considered together as follows:

For a flat roof exposed to a single wall as shown in Figure 4, assume the effective catchment area to be half the exposed vertical area of the wall and is shown as follows:

Roof Catchment Area B = a x b (m²) Vertical Wall Catchment Area E = a x H/2 (m²) Vertical Wall Catchment Area F = b x h/2 (m²) Total Catchment Area = (a x b) + ½√(E²+ F² - 2F x Cos θ) (m²)

All linear dimensions in metres; angles in degrees. Figur e 5 Monopitch Flat Roof with T wo Figure Two

From Figure 2, Catchment Area B = a x b (m²)

Adjacent V er tical W alls Ver ertical Walls

Vertical Wall Catchment Area E = a x H/2 (m²) Total Catchment Area = (a x b) + (a x H/2) (m²)

All linear dimensions in metres. Figure 4. Monopitch Flat Roof with One tical W all Adjacent V Ver ertical Wall er

Practical Design Tips When designing an engineered rainwater scheme, the following design hints are suggested:

■

Always allow for a back-up outlet, even though only one outlet may be required.

■

Rainwater outlets should be inspected and cleaned at least every 6 months to ensure reliable and continuous operation.

Do not design for the maximum outlet hydraulic capacity, allow a 10% factor of safety margin for intense storms and leaf/debris blockage.

HP (High Performance) Range The extensive range of products included in the ACO Building Drainage HP (High Performance) range of outlets provides rainwater drainage solutions for a wide range of applications. Key features of this high quality product range include advanced grating geometry increasing the flow of water through the outlet compared to conventional units and secure gratings to prevent vandalising and theft. The ACO Building Drainage HP range provides a high performance, cost effective, high quality solution for most rainwater applications.

HP Range

A wide range of outlet sizes and configurations are available: 50 mm, 75 mm, 100 mm and 150 mm.

HP Range Description HP Vertical Spigot Outlet HP Vertical Screw Outlet HP 45째 Spigot Outlet HP 90째 Spigot Outlet HP Balcony Spigot Outlet HP Two-Way Screw Outlet HP Gully Spigot Outlet HP Refurbishment Outlet HP Accessories

8 11 13 14 15 16 17 18 19 20

Appendices Material Selection Typical Roof Construction Detail Installation Guidelines Flexible Pipe Couplings

32 34 39 41 7

HP Range Description The ACO Building Drainage HP range of rainwater outlets provides a comprehensive selection of high performance rainwater outlet solutions for most domestic, industrial and commercial applications involving flat roofs, balconies and terracing.

Reduced Installation Costs At the centre of the vortex, a void is naturally formed as the water spirals through the outlet. Under these conditions, both water and air are drawn into the outlet significantly reducing efficiency. For maximum flow rate efficiency, only water should enter the outlet. This may result in the use of fewer outlets for a given installation.

High Flow Rate

HP Range

Advanced design features encourage a higher flow rate of water through the outlet compared to conventional systems by reducing the amount of air that is drawn into the outlet. If allowed to go unchecked, a vortex will form as the water enters the outlet - the same effect can be seen in the bath or a sink when the plug is removed.

Product Features

■

Cost effective drainage solution - high flow rates minimises number of outlets required.

■

Secure grating to prevent vandalism and theft.

■

Comprehensive product range for most applications.

■

Durable, corrosion resistant construction.

■

Gun-metal optionally available.

The ACO Building Drainage HP range of outlets provide anti-vortex design features to minimise this effect and a twofold design approach is adopted to achieve this. On all circular domed gratings an inverted cup arrangement is integrated within the grating to breakdown the vortex effect within the grating and in addition, the leaf guard geometry of the gratings is optimised to encourage water to flow radially into the outlet, thereby minimising the vortex effect outside of the grating.

Compared to conventional outlets, high performance outlets mean either fewer outlets/pipe/groundworks with reduced installation costs, or greater security in extreme rainfall conditions.

Secure Gratings All gratings for the HP range of products are secured with stainless steel fixings that require either a socket wrench or spanner for removal and replacement. This provides additional security to prevent theft or vandalism.

Options

A wide range of accessories are available for the ACO Building Drainage HP range including raising rings, PVC connectors, terrace grates and deck support plates. See Pages 16-22 for details.

■

Gun-metal to BS 1400 available to special order. Gun-metal should be specified for use in conjunction with copper or lead-clad roofs or when connected to copper pipes. Refer to Appendix 1 for further information. Suffix Sales Code with ‘GM’ for this option for example, 2HP-D GM.

■

Gratings and clamp rings can be provided to suit corporate colour schemes and coding as required.

The roof membrane is positively secured into the outlet body by a clamp and is secured by 2 stainless steel fixings. The membrane clamp is serrated on the underside for improved membrane clamp grip performance. The outlet design ensures the integrity of the seal between the clamp and body is not disturbed when the grating is removed for maintenance during the life of the installation.

Materials All products are manufactured from LM6 grade aluminium alloy to BS 1490 as standard for optimum corrosion resistance.

Pipe Connections Refer to Appendix 4 for details of the full range of flexible pipe connection couplings that are available from ACO Building Drainage.

HP Range

Membrane Clamp

HP Range Accessories

For further details of any options, contact the ACO Building Drainage Sales Desk for more information.

HP Range Product Selector

HP 45° & 90° Spigot Outlets

HP Vertical Spigot Outlet

General purpose rainwater outlets suitable for direct connection to cast iron pipework to BS 416 : 1983/EN 877 or to PVC ‘O’-ring socket pipe to BS 4514 : 1983. Other connections can be made using ACO Building Drainage flexible couplings or heat shrink sleeving. Vertical spigot outlets are available with either domed or flat gratings. Flat gratings are used where either vehicles or pedestrian traffic is likely.

HP Gully Spigot Outlet

These angled problem solving units are particularly relevant to suit more complex pipe run detail. Pipework connections as per vertical spigot details.

HP Balcony Spigot Outlet

The gully outlet is designed to fit into valley gutters and is supplied with a vertical spigot outlet and dome grating. Pipework connections as per vertical spigot details.

HP Refurbishment Outlet

HP Vertical Screw Outlet

HP Range

The balcony outlet provides discrete safe drainage for balconies and walkways. Supplied complete with a D-shaped flat grating, the outlet can be installed against a wall. The grating is supplied with holes to receive either 50 mm, 75 mm or 100 mm nominal bore rainwater downpipes. These are easily cut on site to suit the application. Screwed outlets are recommended where connection to the outlet occurs within the thickness of the slab and threaded connections will form a completely gas-tight seal. Vertical screw outlets have a female parallel thread to BS 21 : 1985 for connecting directly to tubes conforming to BS 1387 : 1985 which is supplied with a taper male thread. This ensures a completely watertight seal when screwed fully home into the outlet body. A range of PVC adaptors are available from ACO Building Drainage to allow connection to aluminium pipework, socketed and socketless cast iron pipework and PVC pipework.

HP Two-Way Screw Outlet

The two-way outlet is designed to be used at the junction of roofs and parapet walls, or wherever a horizontal and vertical surface meet. Available to fit pipe sizes of 50 mm, 75 mm and 100 mm. This flexible design of outlet allows either horizontal or vertical outflow take-off. Pipework connections as per vertical screw details.

When an existing flat roof is being upgraded, the refurbishment outlet is designed to fit inside the existing outlet and pipework with minimal disruption without the need to remove the original outlet. The aluminium body incorporates a wide fixing flange to enhance the bond with roofing membranes and does not suffer the distortion effects during the application of torched membranes. Outlets are supplied with a flexible finned pipe seal ensuring a watertight connection to existing pipework. The ease of use and minimal disruption to the existing rainwater system makes this an extremely cost effective solution when upgrading flat roofs.

HP Vertical Spigot Outlet, Dome Grate - Product Selector Technical Information Sales Code

Nominal Bore Pipe Size (mm)

Grating Type

Flow Rate† (l/s)

Area Drained‡ (m2)

Weight (kg)

2HP-D

Dome

1.7

2.39

3HP-D

Dome

5.0

240

2.49

4HP-D

100

Dome

10.7

514

4.23

6HP-D

150

Dome

14.1

675

4.67

† Based on a 35 mm head of water over the outlet body.

‡ Based on a rainfall intensity of 75 mm/hr.

Flow rates based on BS EN 12056 : 2000.

HP Range

Physical Dimensions

Specification Clause Dimension

2HP-D

3HP-D

4HP-D

6HP-D

A B C D E

292 233 196 98 60

292 233 196 108 83

380 305 244 122 110

380 305 244 145 160

The rainwater outlets 2HP-D/3HP-D/ 4HP-D/6HP-D* are to be ACO Building Drainage HP vertical spigot outlets with locked dome grating supplied by ACO Building Drainage (a division of ACO Technologies plc), of Hitchin Road, Shefford, Bedfordshire, UK, SG17 5TE. All components to be manufactured from grade LM6 aluminium alloy to BS 1490/ gun-metal to BS EN 1982*.

All dimensions in mm.

Pipework Connections Vertical spigot outlets may be directly connected to the following: ■

Cast iron pipework to BS 416:1973 or EN 877.

■

PVC ‘O’-ring socketed pipe to BS 4514 : 1985 (for 3HP-D, 4HP-D and 6HP-D outlets only).

■

Connection to 2HP-D units via heat shrink socket or pipe couplings.

Refer to Appendix 4 for details of pipe connection couplings that are available.

All components used within the scope of this system are shown on Drawing No. * and all work shall be carried out strictly in accordance with the manufacturers instructions and the installation details are set out on Drawing No. *. * please delete or complete as appropriate.

HP Vertical Spigot Outlet, Flat Grate - Product Selector Technical Information Sales Code

Nominal Bore Pipe Size (mm)

Grating Type

Flow Rate† (l/s)

Area Drained‡ (m2)

Weight (kg)

2HP-F

Flat

1.7

2.51

3HP-F

Flat

5.0

240

2.65

4HP-F

100

Flat

10.7

514

4.08

6HP-F

150

Flat

15.6

749

4.39

† Based on a 35 mm head of water over the outlet body.

‡ Based on a rainfall intensity of 75 mm/hr.

Flow rates based on BS EN 12056 : 2000.

HP Range

Physical Dimensions

Specification Clause Dimension

2HP-F

3HP-F

4HP-F

6HP-F

A B C D E

292 233 196 98 60

292 233 196 108 83

380 305 244 122 110

380 305 244 145 160

The rainwater outlets 2HP-F/3HP-F/ 4HP-F/6HP-F* are to be ACO Building Drainage HP vertical spigot outlets with locked flat grating supplied by ACO Building Drainage (a division of ACO Technologies plc), of Hitchin Road, Shefford, Bedfordshire, UK, SG17 5TE. All components to be manufactured from grade LM6 aluminium alloy to BS 1490/ gun-metal to BS EN 1982*.

All dimensions in mm.

Pipework Connections Vertical spigot outlets may be directly connected to the following: ■

Cast iron pipework to BS 416:1973 or EN 877.

■

PVC ‘O’-ring socketed pipe to BS 4514 : 1985 (for 3HP-F, 4HP-F and 6HP-F outlets only).

■

Connection to 2HP-F units via heat shrink socket or pipe couplings.

Refer to Appendix 4 for details of pipe connection couplings that are available.

HP Vertical Screw Outlet, Dome Grate - Product Selector Technical Information Sales Code

Nominal Bore Pipe Size (mm)

Grating Type

Flow Rate† (l/s)

Area Drained‡ (m2)

Weight (kg)

2HP-TD

Dome

1.7

2.29

3HP-TD

Dome

5.0

240

2.32

4HP-TD

100

Dome

10.7

514

4.03

6HP-TD

150

Dome

13.5

648

4.13

† Based on a 35 mm head of water over the outlet body.

‡ Based on a rainfall intensity of 75 mm/hr.

Flow rates based on BS EN 12056 : 2000.

Dimension

2HP-TD

3HP-TD

4HP-TD

6HP-TD

A B C D

292 234 121 35

292 234 121 45

380 305 133 38

380 305 114 38

HP Range

Physical Dimensions

Specification Clause

All dimensions in mm.

Pipework Connections Vertical screw outlets have a female parallel thread to BS 21 : 1985 for connecting directly to tube conforming to BS 1387 : 1985 which is supplied with a taper male thread. This ensures a completely watertight seal when screwed fully home into the outlet body.

Screwed outlets are recommended where connection to the outlet occurs within the thickness of the slab and threaded connections will form a completely gas-tight seal within the slab.

Refer to HP Accessories section for details of PVC adaptors that are available from ACO Building Drainage.

The rainwater outlets 2HP-TD/3HP-TD/ 4HP-TD/6HP-TD* are to be ACO Building Drainage HP vertical screw outlets with locked dome grating supplied by ACO Building Drainage (a division of ACO Technologies plc), of Hitchin Road, Shefford, Bedfordshire, UK, SG17 5TE. All components to be manufactured from grade LM6 aluminium alloy to BS 1490/ gun-metal to BS EN 1982*. All components used within the scope of this system are shown on Drawing No. * and all work shall be carried out strictly in accordance with the manufacturers instructions and the installation details are set out on Drawing No. *. * please delete or complete as appropriate.

HP 45° Spigot Outlet, Dome Grate - Product Selector Technical Information Sales Code

Nominal Bore Pipe Size (mm)

Grating Type

Flow Rate† (l/s)

Area Drained‡ (m2)

Weight (kg)

245HP-D

Dome

1.7

3.34

345HP-D

Dome

5.0

240

3.77

445HP-D

100

Dome

10.7

514

4.81

† Based on a 35 mm head of water over the outlet body.

‡ Based on a rainfall intensity of 75 mm/hr.

Flow rates based on BS EN 12056 : 2000.

HP Range

Physical Dimensions

Specification Clause Dimension

245HP-D

345HP-D

445HP-D

A B C D E

305 229 229 175 62

305 229 235 175 87

372 305 273 191 114

The rainwater outlets 245HP-D/345HP-D/ 445HP-D* are to be ACO Building Drainage HP 45° spigot outlets with locked dome grating supplied by ACO Building Drainage (a division of ACO Technologies plc), of Hitchin Road, Shefford, Bedfordshire, UK, SG17 5TE. All components to be manufactured from grade LM6 aluminium alloy to BS 1490/ gun-metal to BS EN 1982*.

All dimensions in mm.

Pipework Connections 45° spigot outlets may be directly connected to the following: ■

Cast iron pipework to BS 416:1973 or EN 877.

■

Connection to PVC pipework via heat shrink socket or pipe couplings.

Refer to Appendix 4 for details of pipe connection couplings that are available. * please delete or complete as appropriate.

HP 90° Spigot Outlet, Dome Grate - Product Selector Technical Information Sales Code

Nominal Bore Pipe Size (mm)

Grating Type

Flow Rate† (l/s)

Area Drained‡ (m2)

Weight (kg)

290HP-D

Dome

1.7

3.57

390HP-D

Dome

3.5

171

3.61

490HP-D

100

Dome

7.0

336

4.69

† Based on a 35 mm head of water over the outlet body.

‡ Based on a rainfall intensity of 75 mm/hr.

Flow rates based on BS EN 12056 : 2000.

HP Range

Physical Dimensions

Specification Clause Dimension

290HP-D

390HP-D

490HP-D

A B C D E

305 229 124 232 62

329 229 121 267 83

405 305 142 285 110

The rainwater outlets 290HP-D/390HP-D/ 490HP-D* are to be ACO Building Drainage HP 90° spigot outlets with locked dome grating supplied by ACO Building Drainage (a division of ACO Technologies plc), of Hitchin Road, Shefford, Bedfordshire, UK, SG17 5TE. All components to be manufactured from grade LM6 aluminium alloy to BS 1490/ gun-metal to BS EN 1982*.

All dimensions in mm.

Pipework Connections 90° spigot outlets may be directly connected to the following: ■

Cast iron pipework to BS 416:1973 or EN 877.

■

PVC ‘O’-ring socketed pipe to BS 4514 : 1985 (for 390HP-D and 490HP-D outlets only).

■

Connection to 290HP-D via heat shrink socket or pipe couplings.

Refer to Appendix 4 for details of pipe connection couplings that are available.

HP Balcony Spigot Outlet, Flat Grate - Product Selector Technical Information Sales Code

Nominal Bore Pipe Size (mm)

Grating Type

Flow Rate† (l/s)

Area Drained‡ (m2)

Weight (kg)

2HP-BO

Flat

1.7

2.58

3HP-BO

Flat

5.0

240

2.71

4HP-BO

100

Flat

8.4

403

2.77

† Based on a 35 mm head of water over the outlet body.

‡ Based on a rainfall intensity of 75 mm/hr.

Flow rates based on BS EN 12056 : 2000.

HP Range

Physical Dimensions

Dimension

2HP-BO

3HP-BO

4HP-BO

A B C D E F G

270 205 52 125 235 180 60

270 205 52 125 235 180 83

270 205 52 125 235 180 110

Specification Clause The rainwater outlets 2HP-BO/3HP-BO/ 4HP-BO* are to be ACO Building Drainage HP Balcony spigot outlets with locked flat grating supplied by ACO Building Drainage (a division of ACO Technologies plc), of Hitchin Road, Shefford, Bedfordshire, UK, SG17 5TE. All components to be manufactured from grade LM6 aluminium alloy to BS 1490/ gun-metal to BS EN 1982*.

All dimensions in mm.

Pipework Connections Balcony outlets may be directly connected to the following: ■

Cast iron pipework to BS 416:1973 or EN 877.

■

PVC ‘O’-ring socketed pipe to BS 4514 : 1985 (for 3HP-BO and 4HP-BO outlets only).

■

Connection to 2HP-BO units via heat shrink socket or pipe couplings.

Refer to Appendix 4 for details of pipe connection couplings that are available.

HP Two-Way Screw Outlet, Flat Grate - Product Selector Technical Information Sales Code

Nominal Bore Pipe Size (mm)

Grating Type

2HP-2W

Flat

1.7

2.14

3HP-2W

Flat

3.9

1.9

189

2.22

4HP-2W

100

Flat

6.0

2.3

288

110

2.23

† Based on a 35 mm head of water over the outlet body.

Flow Rate† (l/s) Vertical Horizontal Outflow Outflow

Area Drained‡ (m2) Vertical Horizontal Outflow Outflow

‡ Based on a rainfall intensity of 75 mm/hr.

Weight (kg)

Flow rates based on BS EN 12056 : 2000.

HP Range

Physical Dimensions

Specification Clause Dimension

2HP-2W

3HP-2W

4HP-2W

A B C D E F Overall Length

204 70 191 214 50 45° 225

204 70 191 214 50 45° 255

All dimensions in mm.

All components to be manufactured from grade LM6 aluminium alloy to BS 1490/ gun-metal to BS EN 1982*.

Screwed outlets are recommended where connection to the outlet occurs within the thickness of the slab and threaded connections will form a completely gas-tight seal within the slab.

Refer to HP Accessories section for details of PVC adaptors that are available from ACO Building Drainage.

* please delete or complete as appropriate.

Pipework Connections Two Way outlets have a female parallel thread to BS 21 : 1985 for connecting directly to tube conforming to BS 1387 : 1985 which is supplied with a taper male thread. This ensures a completely watertight seal when screwed fully home into the outlet body.

The rainwater outlets 2HP-2W/3HP-2W/ 4HP-2W* are to be ACO Building Drainage HP Two-Way screw outlets with locked flat grating supplied by ACO Building Drainage (a division of ACO Technologies plc), of Hitchin Road, Shefford, Bedfordshire, UK, SG17 5TE.

HP Gully Spigot Outlet, Dome Grate - Product Selector Technical Information Sales Code

Nominal Bore Pipe Size (mm)

Grating Type

Flow Rate† (l/s)

Area Drained‡ (m2)

Weight (kg)

3HP-GO

Dome

5.0

240

3.89

4HP-GO

100

Dome

10.4

500

4.02

† Based on a 35 mm head of water over the outlet body.

‡ Based on a rainfall intensity of 75 mm/hr.

Flow rates based on BS EN 12056 : 2000.

HP Range

Physical Dimensions

Dimension

3HP-GO

4HP-GO

A B C D E Overall Length

228 188 251 130 83 334

228 188 251 130 110 334

Specification Clause The rainwater outlets 3HP-GO/4HP-GO* are to be ACO Building Drainage HP Gully outlets with locked dome grating supplied by ACO Building Drainage (a division of ACO Technologies plc), of Hitchin Road, Shefford, Bedfordshire, UK, SG17 5TE.

All dimensions in mm.

All components to be manufactured from grade LM6 aluminium alloy to BS 1490/ gun-metal to BS EN 1982*.

Pipework Connections Gully outlets may be directly connected to the following: ■

Cast iron pipework to BS 416:1973 or EN 877.

■

PVC ‘O’-ring socketed pipe to BS 4514 : 1985.

Refer to Appendix 4 for details of pipe connection couplings that are available.

HP Refurbishment Outlet - Product Selector Technical Information Sales Code

Nominal Bore Pipe Size (mm)

Grating Type

Flow Rate† (l/s)

Area Drained‡ (m2)

Weight (kg)

3HP-RFO

Dome

5.0

240

5.00

4HP-RFO

100

Dome

5.00

240

5.10

† Based on a 35 mm head of water over the outlet body.

‡ Based on a rainfall intensity of 75 mm/hr.

Flow rates based on BS EN 12056 : 2000.

HP Range

Physical Dimensions

Dimension

3HP-RFO

4HP-RFO

A B C D E F G

456 304 346 266 63.5 95 205

456 304 346 266 88.9 120 205

Pipework Connections Refurbishment outlets are designed to fit the following range of existing pipework systems: 3HP-RFO : 71.5 to 78.5 mm internal pipe diameter.

The rainwater outlets 3HP-RFO/4HP-RFO* are to be ACO Building Drainage HP Refurbishment outlets with locked dome grating supplied by ACO Building Drainage (a division of ACO Technologies plc), of Hitchin Road, Shefford, Bedfordshire, UK, SG17 5TE. All components to be manufactured from grade LM6 aluminium alloy to BS 1490/ gun-metal to BS EN 1982*.

All dimensions in mm.

■

Specification Clause

■

4HP-RFO : 97.0 to 104.0 mm internal pipe diameter.

HP Range Accessories

HP Range

A wide range of accessories is available for the ACO Building Drainage HP range of rainwater outlets allowing easy installation in common and not so common applications of roof construction, including warm and inverted roofs, terraces and concealed outlets under raised paving slabs.

Raising Rings

PVC Adaptors

Deck Supports

Raising rings are used where it is necessary to raise the level of the dome grating above the outlet body, for example an inverted roof construction. With the exception of the Balcony Outlets (HP-BO) and Gully Outlets (HP-GO), raising rings will only accept dome gratings or Terrace Grates as the raising rings will not accept the standard flat grates.

PVC adaptors are available for threaded outlets - HP Vertical Screw (HP-TD); and HP Two-Way (HP-2W) systems. PVC adaptors provide a quick and convenient connection to standard PVC pipework.

Deck supports are used where ACO Building Drainage HP rainwater outlets are installed in metal deck roof constructions, providing a stable and secure interface between the outlet and roof. Deck Supports are manufactured from 1.5 mm steel sheet and finished primed in a red oxide paint finish. Suitable for all types of metal deck roofing.

Raising rings are easily cut with a hacksaw on site if required to match installation requirements, i.e. to suit paving slabs. Stainless steel extension fixings are supplied with each raising ring. Raising rings are also available for Balcony Outlets and Gully Outlets. All raising rings are manufactured from LM6 aluminium alloy to BS 1490 and are optionally available in gun metal to BS 1400. Suffix sales code with ‘GM’ for this option.

The adaptors are suitable for connection to all types of pipe systems including cast iron socketed or socketless systems and are assembled using PTFE tape to ensure a watertight connection. Manufactured from tough PVC-u, the adaptors are supplied with a male thread and chamfered spigot for easy connection to PVC pipes. PVC adaptors are suitable for direct connection to: ■

Cast Iron pipework to BS 416:1973 or EN 877.

■

PVC O-ring socketed pipe to BS 4514:1983.

Terrace Grates Terrace grates are designed for installations with terraced paving slabs or block paviors. Terrace grates can only be used with circular raising rings as described above. A slotted fixing detail allows 90° rotational movement to accommodate slab/pavior patterns.

HP Range Accessories - Product Selector Raising Rings for Circular Outlets Vertical Spigot, Vertical Screw, 45 ° Spigot, 90 ° Spigot and Refurbishment Outlets (dome grate only)

Outlet Model

Sales Code

Weight (kg)

2HP-D; 2HP-TD; 3HP-D; 3HP-TD; 245HP-D; 345HP-D; 290HP-D; 390HP-D; 3HP-RFO

2/3RR

161

128

150

0.72

4HP-D; 4HP-TD; 6HP-D; 6HP-TD; 445HP-D; 490HP-D; 4HP-RFO

4/6RR

233

128

222

1.14

All dimensions in mm.

Raising Rings for Balcony Outlets

BO-RR

220 115

Weight (kg) 1.25

HP Range

Sales Code

All dimensions in mm.

Raising Rings for Gully Outlets

Sales Code

GO-RR

240 115

Weight (kg) 1.85

All dimensions in mm.

PVC Adaptors

Sales Code

Male Thread Ø A (BSP)

Outside Ø B (mm)

Length L (mm)

Length l (mm)

Weight (kg)

2STC 3STC 4STC 6STC

2” 3” 4” 6”

57.0 82.0 110.5 160.0

305 305 305 305

148 148 148 148

0.33 0.55 1.12 2.25

Material : PVC-u. 21

Deck Supports for Circular Outlets Sales Code: 2/3DS

Sales Code: 4/6DS

Outlet Model

Sales Code

Weight (kg)

2HP-D; 2HP-TD; 3HP-D; 3HP-TD; 245HP-D; 345HP-D; 290HP-D; 390HP-D; 3HP-RFO

2/3DS

1.97

4HP-D; 4HP-TD; 6HP-D; 6HP-TD; 445HP-D; 490HP-D; 4HP-RFO

4/6DS

2.91

All dimensions in mm.

HP Range

Terrace Grates for Circular Outlet Raising Rings Sales Code: 2/3 TG

Sales Code: 4/6TG

All dimensions in mm.

Outlet Model

Sales Code

Weight (kg)

Appropriate Raising Ring Sales Code (Ref.)

2HP-D; 2HP-TD; 3HP-D; 3HP-TD; 245HP-D; 345HP-D; 290HP-D; 390HP-D; 3HP-RFO

2/3TG

0.70

2/3RR

4HP-D; 4HP-TD; 6HP-D; 6HP-TD; 445HP-D; 490HP-D; 4HP-RFO

4/6TG

1.52

4/6RR

ACO Building Drainage FreeDeck Drainage System For rainwater applications requiring efficient drainage of permeable surfaces including block paviors, paving slabs, shingle and washed ballast, the ACO Building Drainage FreeDeck system provides the ideal solution for terraces, decks, patios, balconies and roof gardens. ACO Building Drainage FreeDeck is a simple, effective and efficient drainage solution for awkward above ground applications.

FreeDeck

ACO Building Drainage FreeDeck can be utilised as a doorway rainwater interception unit to give wheel chair access to both private and public buildings - ideal for Part M accessibility regulations.

ACO Building Drainage FreeDeck Drainage System Description Product Selector

24 26

Appendices Material Selection Typical Roof Construction Detail

32 37

ACO Building Drainage FreeDeck Drainage System Description The ACO Building Drainage FreeDeck linear deck drainage system is ideal for efficient, practical solutions to above ground drainage applications involving block pavior, paving slab, shingle and washed ballast surface finishes for flat roof terraces, decks, balconies, patios and roof gardens.

For the effective catchment of rainwater run-off and the management of percolation within building substrates. Rainwater penetrating the deck via paving slabs, block paviors or granular finishes are intercepted by the ACO Building Drainage FreeDeck channel system which effectively conducts surface water to accessible outlet positions.

Channels available in 500, 1000 and 2000 mm lengths.

FreeDeck

ACO Building Drainage FreeDeck channels are simply located directly on top of the water proofing layer and are laid to level invert. In addition to surface run-off, percolating water is able to enter the slotted sidewalls of the channel system and track through concealed ducts to rainwater outlet positions. Rainwater outlets are top accessible by means of finish level meshed gratings formed around the outlet positions. Either slotted or mesh gratings are available depending upon positioning of the channels and the nature of the foot traffic in the areas to be drained. For example in front of doorways, at the top of stairways or as perimeter drainage against parapet walls. The system is manufactured from hotdipped galvanised steel to BS 729 and provided with slotted or mesh gratings to suit pedestrian FACTA Load Class A applications.

Slotted or mesh gratings available.

Tunnel channels available for interconnecting components.

Gullies allow easy access to rainwater outlets.

Product Benefits and Features Ideal for terraces, balconies, patios and roof gardens. Quick and simple to install.

■

75 mm level invert system.

■

Compatible with shingle, paving slab and garden finishes. Durable galvanised steel construction.

■

Slotted or mesh grating options available.

■

Grating locks supplied as standard.

■

75-105 mm infinitely variable invert channels available to special order.

■

Heelguard grating available for use in doorway drainage.

Channel assembly is easy using the plate and socket connectors fitted on both ends of the channel.

Channel sections are positively locked together to prevent lateral and longitudinal movement. Gratings are secured in position with a 90° turn to lock system.

FreeDeck

■

ACO Building Drainage FreeDeck - Product Selector All components to FACTA Load Class A Material: Galvanised steel to BS 729.

Sales Code

36980 36981 36982

Length (mm)

Width (mm)

Height (mm)

Weight (kg)

2000 1000 500

130 130 130

75 75 75

4.8 2.4 1.3

Length (mm)

Width (mm)

Height (mm)

Weight (kg)

130

0.04

Length (mm)

Width (mm)

Height (mm)

Weight (kg)

1000 500

123 123

20 20

2.2 1.0

Length (mm)

Width (mm)

Height (mm)

Weight (kg)

1000 500

123 123

20 20

2.3 1.3

ACO Building Drainage FreeDeck Linear Drainage Channels Note, slotted grate shown for reference, grating not supplied with channel.

Sales Code

36983

ACO Building Drainage FreeDeck Channel End Plate

Sales Code

FreeDeck

00276 00277

ACO Building Drainage FreeDeck Slotted Grating Slot width : 10 mm.

Sales Code

36953 36952

ACO Building Drainage FreeDeck Mesh Grating Mesh size 30 x 14 mm.

ACO Building Drainage FreeDeck - Product Selector All components to FACTA Load Class A Material : Galvanised steel to BS 729

Sales Code

36960

Length (mm)

Width (mm)

Height (mm)

Weight (kg)

250

75-105

4.1

Length (mm)

Width (mm)

Height (mm)

Weight (kg)

2000

100

2.4

ACO Building Drainage FreeDeck Gully

Sales Code

00328

ACO Building Drainage Fr eeDeck T unnel Channel FreeDeck Tunnel

Specification Clause

ACO Building Drainage FreeDeck Tunnel Channel ideal for interconnecting drainage channels to gullies. Suitable for use with shingle, paving slab and garden finishes.

FreeDeck

The drainage channels are to be ACO Building Drainage FreeDeck with locked slotted gratings supplied by ACO Building Drainage (a division of ACO Technologies plc), of Hitchin Road, Shefford, Bedfordshire, UK, SG17 5TE. All components to be manufactured from hot dipped galvanised steel to BS EN ISO 1461 : 1999. All components used within the scope of this system are shown on Drawing No. * and all work shall be carried out strictly in accordance with the manufacturers instructions and the installation details are set out on Drawing No. *. * please delete or complete as appropriate.

FreeDeck

Architectural Eaves Treatments ACO Building Drainage provides a comprehensive, free design service for Architectural Eaves Treatments requiring bespoke design work.

Guttering

ACO Building Drainage have gained extensive experience over many years in the design and manufacture of eaves gutters, fascias, copings and soffits.

Architectural Eaves Treatments Description

Appendices Material Selection Photograph of Calke Abbey Orangery and sketch of Calke Abbey by kind permission of the National Trust.

Architectural Eaves Treatments With qualified experience in manufacturing from cast and sheet metals, ACO Building Drainage are able to offer design solutions in stainless steel, aluminium alloy, galvanised mild steel and gun-metal, no problem is too demanding.

Guttering FreeDeck

Working with Architects and Engineers, ACO’s qualified in-house design staff, using state of the art CAD design equipment, can produce both exciting but practical products for refurbishment and new build applications.

For further details of the no obligation design service, contact the ACO Building Drainage Helpline as follows: Telephone: Fax: E-mail:

(+44) (0)1462 816666 (+44) (0)1462 851490 buildingdrainage@aco.co.uk

Application Examples ■

Eaves gutters.

■

Parapet wall gutters.

■

Fascias.

■

Copings.

■

Soffits.

■

Industrial valley gutters.

■

Interrupt gutters.

Appendices

1. Material Selection Overview Aluminium Alloys Gun-metal Galvanised Mild Steel Galvanic Corrosion The Electromotive Series Material Selection Tips

32 32 32 32 32 33 33

2. Typical Roof Construction Detail Warm Roof Inverted Roof Un-insulated Roof Cold Roof HP 90째 Outlet Gully Outlet Refurbishment Outlet FreeDeck Channel Drainage Balcony Outlet with Downpipe Two-Way Outlet Terrace Grate Metal Deck Support

34 35 35 35 36 36 36 37 37 38 38 38

3. Installation Guidelines General Installation Notes Threaded Outlets Balcony Outlets HP Circular Raising Rings Balcony/Gully Outlet Raising Rings Deck Supports Refurbishment Outlet

39 39 39 39 39 39 40

4. Flexible Pipe Couplings 41

Appendices

General Installation Notes

Appendix 1 Material Selection Overview This section includes a brief insight into the materials that the rainwater drainage products featured in this Product Catalogue and Design Guide are manufactured from.

Appendices

In certain applications, it is vital to understand the long term operational effects that will occur if products are not specified accurately or installed correctly.

Aluminium Alloys

Gun-metal

Galvanic Corrosion

Aluminium alloys are very common and can be found in a wide range of applications ranging from cooking utensils to spacecraft. The material is commercially available in excess of 99% purity and is used primarily for its high resistance to corrosion, lightness and strength.

Gun metal possesses good tensile strength and corrosion resistant properties and is used in many bearing and marine applications. ACO Building Drainage rainwater outlets are available in gun-metal when bi-metallic corrosion resistance arising from lead or copper materials is a potential risk.

Galvanic corrosion occurs when two dissimilar metals are in electrical contact and connected by an electrolyte. An electrolyte conducts electricity and can be water solutions containing salts or acids - and need not be concentrated for the effect to take place.

Comparing similar products, aluminium alloys weigh around one-third as much as equivalent mild steel and stainless steel products and compared to mild steel, they have a much better corrosion resistance to atmospheric conditions.

Gun-metal is an alloy of copper, tin and zinc. Admiralty gun-metal typically has a composition of 88% copper, 10% tin and 2% zinc.

Because aluminium alloys are strong, lightweight, have good corrosion resistance, are cost effective and have excellent casting properties, this material is an obvious first choice for rainwater outlets and floor gullies. Additionally, being non-magnetic, aluminium will not attract ferrous particles that could otherwise cause silt traps and long term maintenance issues.

Mild steel is a convenient, ductile, easily worked and cost effective material that finds many uses in everyday applications around us.

ACO Building Drainage aluminium rainwater outlets, shower drains and floor drains use LM6 grade aluminium alloy to BS 1490. LM6 exhibits excellent resistance to corrosion in both atmospheric and marine environments compared to other aluminium alloys, and is resistant to sulphate attack for curing concrete.

Galvanising is a process that is commonly used to prevent corrosion and essentially consists of a layer of zinc applied to the surface of the steel. ACO Building Drainage use a â&#x20AC;&#x2DC;hot dipâ&#x20AC;&#x2122; process of dipping the component into a vat of molten zinc.

When exposed to the atmosphere, a thin invisible aluminium oxide film forms on the surface of the material that protects the material from further oxidation.

Galvanised Mild Steel

In its raw state, mild steel offers no resistance to corrosion and quickly forms a familiar rust (ferric oxide) on its surface unless precautions are taken to prevent oxidation taking place.

The effects of galvanic corrosion begin to play an important part when an aluminium rainwater outlet is used in conjunction with metallic membranes, such as lead or copper. The Electromotive Series provides an insight to the corrosion effects between dissimilar materials.

The Electromotive Series The susceptibility of different metals to corrosion whilst in contact with each other depends upon the difference between the contact potentials. The greater the potential difference, the greater the tendency for corrosion. The metal with the higher negative potential forms the anode and is corroded preferentially. Some examples from the Electromotive Series are shown opposite for illustration.

Titanium 304 Stainless Steel (passivated) Silver Nickel Copper Gun-metal Lead Cast Iron Aluminium Zinc Magnesium

More noble decreased corrosion

Less noble increased corrosion

Material Selection Tips For applications when dissimilar materials are in contact with each other wherever possible, select materials to be as close as possible to each other in the Electromotive Series. For example, if a roof is copper clad, select a gun-metal outlet as gun-metal is around 88% copper, this closely matches the cladding material.

â&#x2013;

Where dissimilar metals cannot be readily avoided, care must be taken to electrically insulate the adjacent materials. For example where lead is dressed into an aluminium alloy outlet, carefully paint the aluminium body and clamp components with good quality bitumen paint or use an insulating gasket material such as neoprene sponge. Ideally, a gun-metal outlet should be used in conjunction with lead clad roofs.

â&#x2013;

The effects of galvanic corrosion can be accelerated in saline environments. Caution should be observed with rainwater outlet applications close to coastal regions.

Appendices

â&#x2013;

Appendix 2 Typical Roof Construction Detail Warm Roof

Appendices

A warm roof is where the main mass of the roof structure lies below the main thermal insulation. The waterproof membrane is positioned above the insulation.

Inverted Roof An inverted roof is a form of warm roof where the main mass of the roof structure lies below the main thermal insulation, however, the waterproof membrane lies beneath the thermal insulation.

Un-insulated Roof A roof without thermal insulation. This type of construction is only permitted in non-habitable buildings, e.g. garages.

Cold Roof

Appendices

A cold roof is where the main mass of the structure lies above the thermal insulation.

HP 90 째 Outlet

Gully Outlet

Appendices

Refurbishment Outlet

FreeDeck Drainage System

Appendices

Balcony Outlet with Downpipe

Two-Way Outlet

Terrace Grate

Appendices

Metal Deck Support

Appendix 3 Installation Guidelines General Installation Notes All outlets must be securely attached to the roof structure using a suitable timber frame or deck support. The waterproof membrane must be fully dressed into the outlet body and securely clamped under the membrane clamp. Practical Design/Installation Tips

Balcony Outlets

Balcony/Gully Outlet Raising Rings

✓

Do not design for the maximum outlet hydraulic capacity, allow a 10% factor of safety margin for intense storms and leaf/debris blockage.

The flat grating is configured with an array of eccentric grating slots that can be readily cut on site with a hacksaw to accommodate a downpipe.

✓

Always allow for a back-up outlet, even though only one outlet may be required.

HP Circular Raising Rings

Raising rings for balcony outlets and gully outlets are available and perform a similar function as the HP Circular raising rings as previously described. Separate stainless steel fixings are supplied with each unit.

✓

Rainwater outlets should be inspected and cleaned at least every 6 months to ensure reliable and continuous operation.

Threaded Outlets For all ACO Building Drainage threaded outlets (HP Vertical Screw and Two-Way outlets) are provided with female parallel threads conforming to BS 21:1985 for direct connection of threaded tube conforming to BS 1387:1985. This tube is supplied with a taper male thread conforming to BS 21:1985, which ensures a watertight joint when fully screwed into the unit.

HP raising rings can be used for domed grating outlets and terrace gratings only. HP raising rings cannot be used with flat gratings. HP raising rings are secured with stainless steel fixings that are supplied with each raising ring product.

Deck Supports ACO deck supports are recommended for metal decked roof construction and are suitable for installation on all types of metal decked roofs. Deck supports have pre-drilled holes for ease of fixing.

Where required, the HP raising rings may be easily cut on site to a specific height using a hacksaw (for example, when using a terrace grate in conjunction with paving slabs).

Threaded outlets are particularly recommended where a connection to the outlet is made within the thickness of the concrete slab. In these applications, the threaded connection creates a completely watertight seal.

Appendices

Where a PVC-u screw thread connector (STC) is used in conjunction with threaded outlets, the screw thread connector should be assembled with PTFE tape to ensure a watertight seal.

Refurbishment Outlet

Step 1

Step 5

Refurbishment outlets are designed to conveniently fit within the existing rainwater outlet of the roof that is being refurbished, which means there is no need to remove the existing rainwater outlet.

Strip back all roof coverings to the deck level. Clean out old outlet with wire brush and flush with clean water.

Flush with clean water to lubricate and insert tail pipe into existing pipework. Seat flange on timber frame.

Refurbishment outlets incorporate a high performance domed grating and optimised tail pipe to maximise flow through the unit. The labyrinth finned seal ensures a watertight connection to the existing pipework. Two sealable access points within the body enable PU foam to be injected to fill the void between the old and new outlet.

Step 2 Form timber frame around old outlet and lay insulation board/vapour barrier (35 mm minimum).

Step 6 Screw flange to timber frame.

Step 3

Step 7

Check clearance and trim tail pipe to length with hacksaw if necessary.

Inject PU foam through one port for 5 seconds. Remove any surplus.

Step 8

Appendices

Step 4 Push on flexible labyrinth seal.

Blank off ports with captive screws. Complete installation and weatherproofing.

Appendix 4 Flexible Pipe Couplings General Installation Notes ACO Building Drainage can supply a wide range of flexible pipe couplings to suit all applications.

Sales Code

Diameter A (mm) Range

Diameter B (mm) Range

43814 43813 43801 43803 43805 43807 43811

53 - 61 53 - 61 75 - 88 75 - 88 98 - 115 96 - 114 145 - 168

53 - 61 75 - 88 75 - 88 96 - 114 98 - 115 145 - 168 145 - 168

Appendices

All flexible couplings are supplied complete with two worm drive pipe clips.

Other Products In addition to the range of rainwater outlets the following products are also available from ACO Building Drainage:

Stainless Steel and Aluminium Drainage Systems

Grease Traps & Interceptors

Wall Protection

ACO Building Drainage biological grease traps and non-biological grease interceptors are available to help prevent grease, oils and fats blocking drainage pipes.

ting A range of resin concrete skir skirting ting, including straight, corner and end sections. Provides a protective buffer and can be used to seal wall and floor joints. Also available is a range of stainless steel corner guards available in a variety of profiles with integral fixing anchors.

ACO Building Drainage are specialists in stainless steel linear and point drainage products, providing off-theshelf and custom made systems.

Creativity with Stainless Steel

Stainless Steel Access Covers

Also stainless steel gullies and floor drains manufactured from austenitic stainless steel, aluminium and nickel bronze.

The New ACO Building Drainage EuroCoverâ&#x201E;˘ double sealed recessed access cover is the ideal solution for applications demanding reliable, durable and hygienic operation. Combining highly corrosion resistant austenitic stainless steel and polyester resin concrete to produce a reliable air/water tight installation - every time.

Architectural design solutions from stainless steel VeeLine can be formed into curves, radiuses and flat sheets as required for any type of application. Combining aesthetics and practicality for screens, furniture, air grilles, gratings and decorative features - the possibilities are endless.

ACO United Kingdom

ACO Worldwide

ACO B u i l d i n g D r a i n a g e Hitchin Road Shefford, Bedfordshire SG17 5TE Tel: 01462 816666 Fax: 01462 851490 E-mail: buildingdrainage@aco.co.uk

Australia

Web site: www.acobuildingdrainage.co.uk

Czech Republic

Austria Belgium China

Denmark Finland

ACO B u i l d i n g D r a i n a g e ACO Building Drainage is a member of ACO Technologies plc, which includes:

ACO drain Resin concrete channel drainage systems.

ACO sport ÂŽ Products for sport stadia and pitches, play grounds and landscaping.

France Germany Hungary Italy Netherlands Norway Poland Portugal

ACO technic

Romania

Specialised building products made from resin concrete.

Russia

ACO international

Slovenia

Exports the above products all over the world.

Spain

Slovakia

Sweden

ACO wildlife

Switzerland

Products designed to assist wildlife conservation.

USA

International enquiries Fax: +(0)1462 850957 E-mail: international@aco.co.uk

ÂŠ June 2006 ACO Technologies plc. All reasonable care has been taken in compiling the information in this document. All recommendations and suggestions on the use of ACO products are made without guarantee since the conditions of use are beyond the control of the Company. It is the customer's responsibility to ensure that each product is fit for its intended purpose and that the actual conditions of use are suitable. This brochure and any advice is provided by ACO Technologies plc (the company) free of charge and accordingly on terms that no liability (including liability for negligence) will attach to the Company or its servants or agents arising out of or in connection with or in relation to this brochure or any such advice. Any goods supplied by the Company will be supplied solely upon its standard conditions of sale, copies of which are available on request. The Company's policy of continuous product development and improvement renders specifications liable to modification. Information provided in this brochure is therefore subject to change without prior notification.