The truss shown in the figure below is one of several roof trusses spaced at 20 feet apart. Purli...
The truss shown in the figure below is one of several roof trusses spaced 15.0* at 20 feet apart. Purlins are located at the joints. The weight of the roofing material is 5 psf, and the snow load is 15 psf of horizontal projection of the roof surface. The self-weight of the truss (including purlins) is estimated to be 10 psf of horizontal projection of the roof surface. Use LRFD and design the lightest square HSS for the most critical...
16 The truss in Fig. 7.B supports a roof dead load of 16 psf. Trusses are spaced 24-in. о.с., and the roof live load is to be in accordance with the IBC. Lumber is No. 2 DF-L. Fasteners do not reduce the area of the members. Truss joints are assumed to be pin-connected. CM 1.0, C, 1.0, and C,-1.0 Find: aThe required member size for the tension (bottom) chord using ASD. b. The required member size for the tension (bottom)...
The truss shown in Fig. 04 supports a roof dead load of 40 psf and a roof live load of 100 ps Douglas Fr-Larch. Truss joints are assumed to be connected with -in fasteners. Using LRFD method, verify if 2 x 6 dimensional sawn lumber is adequate to sustain the tension in the bottom chord AC, using f. Trusses are spaced at 3ft o.c. and are made from No. 2 LRFD. CM-I , Ct s), Ci-l , ф-0.8,A-08, KP 2.7,...
(a) Warren truss (b) Howe truss (c) Pratt truss (d) Baltimore truss (e) Parker truss Figure 2: Truss Types (Nielson Text) The truss bridge has the following properties/characteristics: 1. Span length (bottom chord): 168 ft 2. 14 panels (12 ft length per panel) 3. All diagonals are 45 degrees 4. Simple truss (all members are pin-connected and loads are only applied at the joints) 5. Simply-supported (pin at one end, roller at the other) 6. 13 ft width between trusses...