- Proceed the erection of steel truss following the “Rolled up” procedure, that’s mean assembling truss in one specified direction.
+ Assemble the lower chords for the first segment of truss.
+ Assemble the diaphragm to connect lower chords.
+ Assemble the lower wind brace.
+ Assemble the brace connecting stringers.
- By using the surveying Theodolite, check out the dimensions the first segment of truss.
- Assemble next segments of truss following steps as above described for assembling work of steel truss, 50% of stud & 25% of bolt D22 by a total number of bolting holes shall be used per one joint.
Jacking up truss step 1:
- Use 2 jacks having capacity of 100T, Jacking stroke of 17cm arranged symmetrically at knot position. The step 1 camber to be controlled and adjusted by Theodolite corresponding to the design camber.
- Use hard type of wood planks to bear under knots of tress then free the jacks.
Second stage of assembling
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