Snow: 20 psf of horizontal projection Roofing: 12 psf MC8 x 8.5 purlins Truss welght: 1000 Ib (estimated) a. Use LRFD. b. Use ASD. 3'-0 3@ 10'-0* = 30'-0"

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Define the elemental stiffness matrix for element 2-3 in the given truss structure 1 45 90 45 2 3

1. Given: A truss shown below Find: (1) All the forces in 3 members and reactions at the supports (2) Is the member AC a zero-force member? If yes, explain which of the 2 conditions for zero-force members discussed in the class is satisfied. 100 N 3 4 B 4 m A 3 m

A Free body diagram FBD is a diagram that indicates the . .forces acting on structural system. external all answers are correct internal

COMPUTE FOR THE CENTROID: INNER RADII= 1 ; OUTER RADII= 2

We have the following loading with FA = 59 N, FB = 163 N, and Fe = 125 N. FB Fc FA Bo > Ca Efx=0 -FA+ Fe + Fc + fp = 0 B What is the internal force Fcp between C and D in units of Newtons? D4 +x

600 lb 600 lb Do 600 lb 300 lb B 300 lb 6 ft F H ΑΠ C E G 6 ft 8 ft -8 ft 8 ft 8 ft 8 ft→ Analyze the truss, find forces in all elements, use any methods

STRUCTURAL THEORY