August_1966 — Page 85

gable column. These panels are simi- lar in appearance to normal wall panels, but include a steel diaphragm within the perimeter frame, faced on each side with Asbestolux.

Mild steel angle bracing is provided between the end wall columns at each floor, immediately adjacent to the gable ends. The main intermediate floor beams of adjacent units are braced together at four points along the length by means of mild steel floor bracing frames.

Method of Erection

The Terrapin units, each compris- ing a floor area of 200 sq. ft. come in packs measuring 25 ft. 6% in. by 8 ft. 41⁄2 in. and 4 ft. 11 in. high.

A lorry-mounted crane is normally used to ensure fast erection of each unit on the building site. On arrival at the site each pack is off-loaded by the crane, swung over and lowered on to the footings. When the floor com- ponent is resting upon the foundation pads the roof is raised and the end wall panels are swung out and locked into position.

Each unit is erected in a similar way until all the units required for the building are in position. Gable ends are then added, and each of the units is secured to its neighbour. Cover boards, floor and roof junctions are fitted, and the building is complete.

The erection of multi-storey build- ings by the Terrapin method is simi- lar. except that square section steel

ZACK

MUILDING

1

imposed roof load is 15 lb./sq. ft.

Erection of a Terrapin multi-storey structure

tube stanchions are incorporated into the loadbearing end panels, which slot into the floor section. As each unit is lifted from foundation level by the crane, both the fabric and the steel frame of the building are erected simultaneously.

Design Data

The buildings are designed to re- sist a wind velocity of 72 m.p.h. The

Imposed floor loads are as follows: (a) ground floor, either 40 or 60 lb./ sq. ft. (b) intermediate floors, 60 lb./ sq. ft.: and (c) ceiling of intermediate floors, 15 lb. sq. ft.

The heights of two-storey buildings are: internal ground-floor ceiling, 8 ft. 15% in.: first floor to roof beam, 8 ft. 0% in. first floor to ceiling soffit. 8 ft. 10% in.; and overall floor beam to roof fascia, 20 ft. 61⁄2 in.

Further units added

Multi-span building

Gable ends fitted

Far East Architect & Builder August, 1966

Units can be added or removed

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* SINCE 1914

GOAL