MGP12 timber to give a total joist thickness of 70 mm. The joist will have a clear span of 3.5 m and the following facto

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Mgp12 Timber To Give A Total Joist Thickness Of 70 Mm The Joist Will Have A Clear Span Of 3 5 M And The Following Facto 1 (54.03 KiB) Viewed 16 times

MGP12 timber to give a total joist thickness of 70 mm. The joist will have a clear span of 3.5 m and the following factored loads have been identified as being the critical load cases: Serviceability factored loads in the critical load case • imposed (crowd) 1.2 kN/m • total (servic'ty) 1.2 kN/m Strength factored loads in the critical load case • permanent 1.0 kN/m • imposed (crowd) 2.5 kN/m • total (strength) 3.5 kN/m Particleboard sheeting floor will be nailed to the joists along the top edge at close centres. It will sit on brick walls at each end with the length of bearing of 110 mm. In order to give satisfactory vibration performance, the deflection limits have been set at span/300 for the load case given as the serviceability load case above. a. Calculate the design span (L) and an appropriate deflection limit (in mm). Then use it to select a cross-section to satisfy the serviceability criteria. b. Check the bending capacity of the beam against the strength limit states bending moment for the critical strength limit state load case given. c. Check the bearing capacity of the beam against the reactions over the top of the brick wall given that the material is strength group SD6. d. Check the shear strength of the beam.