Load Truss 20 Ton Capacity : ZI 4011
IS 1888 1962, ASTM D 1194, BS 13779
The truss is of welded 1- girder construction in two halves which can be bolted together when required. The flower chord, the cross- pieces for holding the truss down and the truss down and the vertical thrust members are all of welded box type construction with two channels enclosing and welded to an I girder. The anchorages are of a design tried out and perfected at CBRI- Roorkee. They consist of semi cylindrical pieces each held down by 3 feet long steel spikes driven in through holes drilled in the semi cylinder. The spikes enter the ground at about 60 degree to the horizontal, four from each side spaced along the length of the anchorage. The cross- pieces are moored to the anchorages by channel straps and bolts. Eight such anchorages are supplied with the 20 ton truss. Guy wires with turn backless are supplied keep the truss erect.
ZI 4012 LOAD TRUSS 30 TON CAPACITY
Same as ZI 4011 but twelve anchorages and spikes instead of eight.
ZI 4013 LOAD TRUSS 50 TON CAPACITY
Same as ZI 4011 but sixteen anchorages and spikes instead of eight.
Click here to download PDF. 
