SolutionHomeworkCh03-1

# SolutionHomeworkCh03-1 - Solution of Chapter3 CTE322...

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Create by Mr.Ekarut Ruayruay CTE322 -1/2545 Department of Civil Technology Education,KMUTT. Solution of Chapter3: CTE322 Structural Analysis1 1) Determine the force in each member of the truss. State if the members are in tension or compression Sol n : Determine Support Reactions: 0; D M =⊕ ( ) ()( ) ) ) () 24 2 36 4 24 4 12 0 B −−−= B = 9 Bk = …### y F 2440 y BR + −−−= 1 y Rk = x F 0 x = 1 30 0.5 x DS i n k =− D …### 1 30 0.866 y D Cos k == D …### Determine axial force in each member: Joint A : 12 8 15 3 AF = ; 9 2 15 AF = y F 9 20 15 AF −= 10 . 3 AF k Ten = …### x F 12 0 15 AB AF += 8 . 3 AB k Com …### 2 k A AF AB 12 9 15 12 15 AF 9 15 AF R x R y 30 ° 30 ° D x =R x Cos30 ° -R y Sin30 D y =R x Sin30 +R y Cos30 4 k 4 k 2 k A 12 ft 12 ft 12 ft 9 ft BC F D B R y R x 30 ° E

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Create by Mr.Ekarut Ruayruay CTE322 -1/2545 Department of Civil Technology Education,KMUTT. Joint B : 0; x F =⊕ 8 0 3 BC += () 8 . 3 BC k Com =− …### y F 90 BF 9. BF k Com …### Joint F: y F 9 924 0 15 FC −−− = 5.
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SolutionHomeworkCh03-1 - Solution of Chapter3 CTE322...

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