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Generally the purlins are placed at the panel points so as to avoid
Purlins have a tendency to sag in the direction of sloping roof and sag rods are sometimes provided midway or at third points, between roof trusses, as desirable to take up the sag. These rods reduce the moment Mw and result in a smaller purlin section.
As per IS: 800. The maximum bending moment for design of purlins can be taken as
In a gabled industrial building in order to minimize the wind forces on the roof, the roof slope should be kept close to
Purlins are provided, in industrial buildings, over roof trusses to carry dead loads, live loads and wind loads. As per IS code, what are they assumed to be?
Purlins are assumed to be continuous beams.
At what value (nearly) is the maximum spacing of purlins for standard asbestos roofing sheets kept?
A building with a gabled roof will experience pressure on its leeward slope which is
The live load for a sloping roof with slope 15°, where access is not provided to the roof, is taken as
Internal air pressure depends upon the degree of permeability of roof or wall.
The wind load on a steel truss for an industrial building will depend upon
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