QUESTION 2 25 points Save Answer Seasoned Tallowwood of Grade F34 is used in the construction of a roof truss of a resta

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Question 2 25 Points Save Answer Seasoned Tallowwood Of Grade F34 Is Used In The Construction Of A Roof Truss Of A Resta 1 (132.9 KiB) Viewed 30 times

QUESTION 2 25 points Save Answer Seasoned Tallowwood of Grade F34 is used in the construction of a roof truss of a restaurant in Geelong, Victoria, see Figure 2A. The bottom chord of the truss has a cross-section of 290x45mm. For design against bending, the bottom chord of the truss can be assumed to carry a uniformly distributed load over a simply supported design span of 15m. The diagonal and vertical locations on the bottom chord can be considered to be lateral restraints acting on the top edge of the bottom chord. For design, the bottom chord can be assumed to bend in isolation and not linked to bottom chords in adjacent trusses that are at 3m distances on either side of the truss under consideration. Use the following unfactored loads on the bottom chord to determine your design action effects: (a) Permanent action due to gravity loads = 3kN/m and (b) Wind uplift (reversal) = 5kN/m. Check if the bottom chord has sufficient capacity in bending. [email protected]= 15m Figure 2A