Building Technology 1

BUILDING TECHNOLOGY 1 [ARC 3512] PROJECT 2: ADVANCED ROOF & INDUSTRIALIZED BUILDING SYSTEM TUTOR: MS. CHERYL CHUA SOR HONG

0315561

FEIVEN CHEE

0312004

MUHAMMAD HAZIQ BIN ARIFFIN

0311763

OH KENG YEE, ALEXIS

0312501

VOON JIA WEN

0312703

THAM MIN YANG

1007P79681

1.0 Precedent Studies 1.1 IKEA Damansara 1.1.1

Introduction to Project

3

1.1.2

Orthographic Drawings

4

1.1.3

IBS Components

7

1.1.4

IBS Installation Methods

8

1.1.5

IBS Connections & Joints

14

1.2 Office for Waste Management, Munich 1.2.1

Introduction to Project

15

1.2.2

Orthographic Drawings

16

1.0

Precedent Studies 1.1 IKEA Damansara 1.1.1

Introduction to Project Project Name

: IKEA Damansara

Location

: Mutiara Damansara, Selangor, Malaysia

Architect

: TJ Ong Architect

Developer

: IKANO Corporation Sdn. Bhd.

Size

: 75,000 sqm

Completion

: 2003

IBS started in Malaysia in the early 1960’s. The Industrialized Building Systems (IBS) is a construction process that utilizes techniques, products, components, or building systems which situated in the thriving new township of Mutiara Damansara in Petaling Jaya, Selangor, this IKEA store is the largest dedicated home furnishing retailer in Malaysia and biggest IKEA store in Asia.

The store spans 33,450m2 over three levels as well as another two levels of underground car parking. Construction was completed in a mere 15 months due to the utilization of the Industrialized Building System. This led him to win the prestigious Fiabci Malaysia Property Award of Distinction 2004 under Best Retail Developments.

1.1.2

Orthographic Drawings

Figure 2: Basement 1 Plan

Figure 1: Basement 2 Plan

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Figure 5: Ground Floor Plan

Figure 4: First Floor Plan

Figure 3: Roof Plan

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1.1.3

IBS Components

Precast Hollow Core Slab

RC Flat Slab

RC Staircase

Precast Steel Roof Truss

Reason: Cost effective, quick

Reason: No joints reduces risk

Reason: Quick and no fuss

Reason:

to assemble, light self-weight

of water seeping through

For all the other floors above

Basement

is

The reinforced concrete stairs

The steel members of the roof

of

precast

constructed by a whole level

IKEA used was a precast of a

truss were precast off site

the rebar, they can

hollow core slabs were used.

of reinforced concrete flat

double flight stairs with a

while the assembling of the

be assembled on site

The precast hollow core slab

slab. With the nature of a

landing. A piece of cast in

individual members of the

with minimal labour.

in IKEA has longitudinal cores

basement

slab,

situ reinforced concrete flat

trusses

The

the

to reduce the weight of the

waterproofing was an issue

slab was casted at the edge

welded on site as IKEA is a

columns can be pre-

floors. The hollow core slab

and the lack of joining and

of the stairs flight to connect

large scale building, thus has

set into various sizes

used in IKEA is 300mm wide

grouting work was ideal. The

it with the hollow core slab.

a

that are needed.

and has 200mm wide core.

floor slabs are cast in situ with

Precast reinforced concrete

Above lays a 100mm thick

formwork set up and rebar as

stairs were used for IKEA as it

layer of finishing.

reinforcement.

is

was fast to assemble and it

the

delivers what IKEA needed as

Precast Columns Reason:

Speed

of

construction After and

the

moulding

pre-stressing

sizes

of

of

Basement

2,

then

2

poured

of

Concrete

formwork and let to dry.

and

lightweight

IKEA

over

Quick

a

warehouse

long

were

span

bolted

of

and

trusses

shopping

centre concept without any excessively elaborate design.

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1.1.4

IBS Installation Methods General Proper planning and preparatory works are required before erection of precast concrete elements to ensure efficient and quality installation. The following steps should be carefully planned: 

Method and sequence of assembly and erection



Method of providing temporary supports



Provision for final structural connections and joint details



Erection tolerances



Handling and rigging requirements

Prior to the installation of the precast concrete elements, it is important to consider the following work items and checks listed as below:



Check for site accessibility for the delivery of precast elements



Check delivery checklist for correct type, quantity and panel identification



Check for adequate crane capacity and working clearance for hoisting of precast concrete elements



Conduct measurement to confirm on the accuracy of the critical dimensions of precast concrete elements and openings



Conduct visual inspection on concrete finishes and check for any major defects

Installation of Vertical Precast Component Installation sequence: i.

Setting out



Set reference line and offset line to determine the position of the precast elements to be installed



Check the accuracy of the offset lines



Check the shim plate level and stability



For vertical precast component check the positions and alignment of the starter bars before hoisting for installation

Page | 8



Provide level pads (or shim plates) for setting the level of the elements. Set the level pads in position using non-shrink mortar



For precast external wall/ column, fix the compressible form or backer rod on the outer perimeters of wall



Check that the compressible form or backer rod are properly secured

ii.

Lifting and Installation



Lift and rig the panel to its designated location with the use of wire ropes



Check the hoisting condition of the precast element



Check alignment and verticality of the panel. If necessary, adjust the temporary propping to achieve the level and position of the precast element



Adjust the panel to position and secure it with diagonal props



Check the stability of the erected props before releasing the hoisting cable

Page | 9

iii.

Grouting Work



Prepare and apply non-shrink mortar to seaI the gaps along the bottom edge of the inner side of the panel



Check that the joint widths between panels are within design allowances before grouting



For corrugated pipe sleeve or splice sleeve connection, prepare and pour non-shrink grout or proprietary grout into the pipe inlets provided



Non-shrink grout used at the interface with the precast elements should preferably be free flowing and self-compacting in nature so as to ensure good compaction at the joint and to minimize the risk of cracking



Non-shrink grout should be prepared in accordance with the specifications



Keep the installed panels undisturbed for at least 24 hours



Check that all horizontal joints are properly sealed



Collect sample test cubes of the grout mix used for critical elements such loading bearing walls for testing

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iv.

Joint Casting and Sealing



For panels with cast in-situ joints, install the joint rebar as required



The joint rebar should be correctly placed in accordance with the design specifications



The formwork should be properly secured during the casting operation of the joint



Set up forms for the casting of the vertical joint



Carry out concrete casting



Remove forms after sufficient concrete strength has been achieved



For joints between facade walls or between external columns with beams or walls elements, approved sealant and grout will be installed at later stage



For panel with welded connection, place the connecting plate between the panels and carry out welding as per design requirement

Page | 11

Installation of Horizontal Precast Component The method and sequence of installing the precast slabs and beams (which is also applicable to other horizontal components): i.

Setting out 

Set reference line and offset line to determine the required alignment and level of the precast slab/beam elements during installation



Check the accuracy of the offset lines



Check the level and stability of the shim plates



Before hoisting, check that the dimensions and alignment of the protruding bars are within the specified tolerance, to prevent any obstruction during the erection process

ii.

Lifting and Installation



Put up temporary props to support the precast slab/beam elements



Beam elements should be supported at minimum two locations during hoisting



Lift and rig the elements to designated location with the use of wire ropes



Balcony planter ledge and slab should be supported at more than two locations, depending on the dimensions of the elements and design consideration



Align and check level to suit the required setting out before placement of precast members to final position



It is important to check on the levelness of the precast elements as well as between the elements before proceeding to do the jointing works

Page | 12

iii.

Casting of Joint



For components with cast in-situ joints, place and lap the rebar as required



The joint rebar should be correctly placed in accordance with the design specifications



Set up the formwork for the casting of the joint



The formwork should be properly secured during casting of the in- situ joint



Supporting beams can be designed to form part of the formwork for the casting of joint



Carry out concrete casting



Remove forms after sufficient concrete strength has been achieved



http://www.bca.gov.sg/professionals/iquas/others/precastinstallation.pdf

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1.1.5

IBS Connections & Joints

Page | 14

1.2 Office for Waste Management, Munich 1.2.1

Introduction to Project Architects

: Kurt Ackermann and Partners

Location

: Munich, Germany

Function

: Industrial, car park

Material

: Fiberglass coated with PTFE

Covered surface

: 8400m2

Length

: 75m

Width

: 125m The protected parking facilities for the city's 150 refuse vehicles form one section of a three-part complex erected for the municipal Office for Waste Management. The roof over the

vehicle port is a point-supported membrane structure in translucent PTFE-coated glass-fibre fabric. The parking areas are laid out on two levels, consisting of an open concrete upper deck erected within a solid tank structure sunk into the ground. The deck also accommodates changing rooms and showers for 500 refuse workers.

More than 8400 m² in area, the tent roof is supported by a grid of 88 steel columns laid out at 10 x 12 m centres. The membrane itself consists of 12 m pre-cut strips welded together on site.

The inner columns are protected against ramming by concrete plinths and have flexible seating at the base. Horizontal loads are transmitted via raking peripheral columns to the lower-floor structure. Each of the 70 bays of the membrane is tensioned by a central steel suspended column on the underside. The roof is drained by a vacuum system within the main steel columns. The lightweight membrane construction was facilitated by the fact that it contains no members subject to bending. It was designed as a structurally continuous area, with thin steel cables on top of the skin articulating the individual bays.

1.2.2

Orthographic Drawings

Figure 6: Ground Floor Plan

Figure 7: Site Context

Page | 15

Figure 8: North Elevation/West Elevation

Page | 16