Channel sections are used as a purlin. The top chords of the truss are sloped at 6H to 1V. Trusses are spaced 4m on centers. Use the properties of the channel section in the picture. Loads: Dead load = 600 Pa Live load = 800 Pa Wind load = 1,300Pa Wind coefficients: Windward = 0.25 Leeward = -0.4 Use Fbx=Fby=248 MPa. Determine the safe spacing of purlins (Use load combination of 0.75(D+L+W)

Q: DF, CE and BD.

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Q: 1. A rectangular beam has uniformly distributed dead and live loads along its full length as shown…

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Q: The beam, W410 mm x 67 kg/m, with 9mm web thickness subjects the girder, W530 mm x 109 kg/m with 12…

A: Bolt shear stress, Fv = 120 MPaBolt bearing stress, Fp = 480 MPaweb thickness, t = 9 mmTo find:The…

Methods to Determine Vertical Stress

The load applied to the soil is transferred to the underground. The presence of water at soil pores and solid grains above the soil are the primary components that are responsible for the effective load transfer. Due to the load acting, the internal component of the soil or the underground formations undergoes deformations or a tectonic shift. The amount of deformation depends upon the amount of load acting on the soil surface, which indeed, depends on the weight of everything present above the soil. Due to this, the underground soil element develops internal stresses which try to resist the tectonic changes.