(Solved): 7.3 The truss in Fig. 7.A has a 24 lower chord of Select Structural Spruce-Pine-Fir (South). The ...

7.3 The truss in Fig. 7.A has a $$2\times 4$$ lower chord of Select Structural Spruce-Pine-Fir (South). The loads shown are the result of $$\mathrm{D}=20$$ psf and $$\mathrm{S}=55\mathrm{psf}$$. There is no reduction of area for fasteners. $$C_M=1.0,C_t=1.0$$, and $$C_i=1.0$$. Joints are assumed to be pin-connected. $${}^3$$ Trusses are spaced $$4\mathrm{ft}$$ on center. Figure 7.A Find: $$a$$. Check the tension in the member using ASD. b. Check the tension in the member using LRFD.