Roof truss/ frame structure installation

Roof turss kyo use kiya jata hai iske load capacity aor design ke bare me jane kaha use kiya jata hai iska section kaise banaya jata hai size weightage ke bare me jane building bonglow ya comercial project me use kiya jata hai .
ISMB Indian standard medium beam
ISA. Indian standard angle
Two type angle equals and unequal
RHS Rectangular Hollow section
CHS. Circular Hollow section
SHS. Square Hollow section
Sheet. Polycarbonate, proflex, fiber sheet
Purlin, stiffener plate , gusset plate , chequered plate , girder brasing, tube section..etc.
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