IBS - Light Tech Built

8/8/2019 IBS - Light Tech Built

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Lightweight Industrialised Building System

TECH-BUILT


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1.O INTR ODUC TI O N

The Swedish Tech-built System (STS) method was firstdeveloped by 2 Swede architects, L G Sernebald and B

Skarin. Widely used in the USA under licence.


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1.O INTR ODUC TI O N (cont ..)

I t employs small & strictly modular construction unitsfor the construction of:

a. a high quality temporary building b. a flexible semi permanent building c. a flexible permanent building.

Allow easy modification on structural requirement.


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The building can be erected by unskilled workers without sacrificing the standards of comfort, design &

layout of the houses.


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TECH-BUILT


App lication The system can be applied for the rapid erection of

houses, factories, offices & schools with maximumheight of 2 floors.


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TECH-BUILT

a tech-built house with a steel frame


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2 .0 TE CH NIQ UES

FoundationLaid in a conventional method upon a concrete pad /raft footing or upon a basement floor, with additionalseries of bolts (holding down bolts) cast into theconcrete slab.


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2 .0 TE CH NIQ UES

Ty pes of U nits2 main types of building components are used for basic

framework:a. Floor beam unit (1.3 m long / weight 3 1 lb).b. Wall frame unit (column) (2.6 m long / weight 79 lb).


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2 .0 TE CH NIQ UES

Floor beam & Wall frameBoth units are mass-produced at factory using 2mmthick sheet steel with corrosion resistance surfacetreatment.

The floor beam units are perforated with 4 large holes

to reduce weight & to provide position of services(sanitary, water supply, electricity, heating pipes,telephone etc).


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2 .0 TE CH NIQ UES

Special high tensile steel bolts are used for construction works

The only tool required for the erection of the basicframeworks are 2 spanners.


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Floor beam unit (1. 3 m intervals)

Wall frame unit(2.6 m high)

Note :Floor beams are perforated to reduce dead load and to allow building services.


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3 .0 CO NSTR UC TI O N MET HOD

A grid is constructed from the flooring beams, thenbolted to the foundation slab (onto the holding downbolts).

1.3 m x 1.3 m gridlines


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3 .0 CO NSTR UC TI O N MET HOD (cont ..)

The vertical wall frame units are next erected, by fastening the lower ends with 2 bolts (high tensile bolts)to the flooring beam grid by using only spanner.


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The 1 st floor flooring grid is next erected the same way as the ground floor.


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3 .0 CO NSTR UC TI O N MET HOD (cont ..)Sequences

1st : construction of ground floor beam units

2nd : construction of ground floor wall frameunits (column)

3 rd : construction of first floor beam units

4 th : construction of First floor wall frameUnits (column)

5 th : construction of Roof beam units


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Stages in the framework erection


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A special junction plate and bolt is used to make thejunctions of 4 flooring beams. The joints betweenflooring beam are strong enough to permit a free span

of 4 modules (1.3 m x 4 = 5 .2m).


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A special junction detail

Floor beam unit

2mm thk mild steel


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Where balconies or overhangs required, extra flooring beams are simply bolted to the existing flooring section,outside the main framework (cantilevered of 1 module)

Cantilevered of 1 module only


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Cross bracing by special reinforcement rods is provideddiagonally to the structure to reinforce the units.

Cross bracers

Vertical member for pitch roof


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Shorter vertical units are bolted to the flooring grids(roof beams) in such a way to produce the pitch of theroof.

Pitched roof


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Special staircase units in modular dimensions can beincorporated.


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4 .0 FINIS H ES

External C laddingConsist of panels of 2 widths - 1200mm & 100mm(together comprise the basic 1 3 00mm module).100mm panel is called the jointing panel.

The cladding units are of numerous types depending

upon the duty to be performed. Outer wall asbestoscement, fibre & timber boarding, plastic, glass, metalsheeting etc.


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4 .0 FINIS H ES

External C ladding They are attached to the structural framework using locking device & sealed with soft rubber strips as

weather protection strips.

Once the outer wall is in place, insulations (mineral wool / rubber foam blankets) are inserted between

cavity for both floor and wall.


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4 .0 FINIS H ES (cont ..)

Internal cladding After the external cladding has been positioned, theinternal partition (also in modular dimensions of 1200mm & 100mm) of hardboard or blockboard (with

wall paper) or gypsum board are placed into position.

They are attached in position by means of espagnolettes which are operated through a hole at the bottom of thepanel. The hole is then covered by the skirting board.


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Internal cladding The surface is then finished with hardwood veneer,plastics, painted panels or simple gypsum panels with

wall paper.


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Flooring The flooring units consist of plastic-coated, linoleum-covered, rubber-tiled or parquet-covered units.

Simply attached to the top of the flooring beamframework using spring fasteners.


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Ceiling

The same modular dimensions solid or perforated. Also can be incorporated with light fittings.

Can be clipped into position without any further ado.


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Roofing The roofing units are of sandwich construction. Thebottom units (structure member) covered with thick

layer of insulation & waterproof skin (metal, felt orplastic).

Rooflight can be incorporated by replacing the unit

with transparent glass-fibre.


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Roofing (cont ..)Flashing and gutter also in modular dimensions & canbe bolted onto the roof.

Pitch roof can be constructed by modifying the lengthsof vertical supports holding the roof.


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Window & D oor Windows and doors are made in modular dimensions,and attached easily to the vertical wall units.

Special rubber strips are used as draught excludersbetween windows, doors & the structural units.


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Interior FittingsK itchen units, wardrobes etc are all made in modulardimensions. Can be fixed directly to the structuralmember by fixing devices.

Electric wiring is laid in between the cladding units.

Heating is hot air through special ceiling holes.


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Fitted cupboards are all made in modular dimensions and can be fixed to structuralmembers with special fixing devices. There is a choice of floor finishes including rubber tiles, plastic, linoleum and parquet.


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The machine made product is expressed honestly


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5 .0 ADVA NT AGES

a. Flexibility easy modification to extend the house;simply required 100mm width of extension units, by bolting to the existing structure.

b . Re-use - the entire structure can be dismantled andre-erect as the same building or a completely different

type of building.


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Ground Floor First Floor

The planning grid is 1.3 m x 1.3 m. To a completed house, further units can be easily beadded to cater foe expanding family. Buildings can be easily dismantled andreassembled elsewhere if required. The planning options are limitless.


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THE END


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Documents

IBS - Light Tech Built