STR4801 PROJECT 2022 QUESTION 1 [100 MARKS] A roof truss is shown in Figure Q1 below. The truss is one of the trusses sp

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Str4801 Project 2022 Question 1 100 Marks A Roof Truss Is Shown In Figure Q1 Below The Truss Is One Of The Trusses Sp 1 (152.96 KiB) Viewed 24 times

STR4801 PROJECT 2022 QUESTION 1 [100 MARKS] A roof truss is shown in Figure Q1 below. The truss is one of the trusses spaced at 6.0 m centres and the span of the truss is 18 m. The height to the eaves is 6 m and the building is 65 m long. Other dimensions and the positions of purlins are as shown in the figure. The purlins can be assumed to provide lateral restraints for out-of-plane buckling of the top chord. The roof loading consists of . roof sheeting - 0.8 mm thick steel in the IBR profile; and . foil-faced fibre insulation to be provided under the roof sheeting. The location of the building is on a military base in Kimberley, Northern Cape Province, South Africa. Design the truss members. Make sure to clearly indicate the following; a) Loading of the structure. b) Analysis of the truss for the roof loads, including the truss members, and indicating design loads. c) Efficient member design. Provide supporting statements on these particular member selections. d) Design of connections (no need for duplications on similar connections) e) Drawings/ sketches of your designs. Also, make assumptions as necessary, but clearly state the assumptions. Assumptions ARE NOT supposed to be made where information can be obtained (e.g. Self-weight of IBR sheet) 557 657 Purlin Spacing @ 1500 mm THE Purlin Spacing @ 1500 mm 10 spans @ 1800 = 18000 mm You are required to use the SANS10160-3 for wind loading (not the old standard). (Question is based on Chapter 9 of your prescribed book) 3 TOTAL = 100 MARKS © UNISA 2021 3