Structural Analysis - General Questions (2)

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Structural Analysis - General Questions

pg6-11

Determine the horizontal and vertical components of force at pins A and C of the two-member frame.

A.	Ax = -212 N, Ay = 388 N, Cx = 212 N, Cy = 212 N
B.	Ax = -300 N, Ay = 300 N, Cx = 300 N, Cy = 300 N
C.	Ax = -849 N, Ay = 149 N, Cx = 849 N, Cy = 849 N
D.	Ax = -1200 N, Ay = 1200 N, Cx = 1200 N, Cy = -600 N

Answer: Option B

Explanation:

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10.

pg6-5a

The Warren truss is used to support a staircase. Determine the force in members CE, ED, and DF, and state whether the members are in tension or compression. Assume all joints are pinned.

A.	ED = 3.60 kN T, DF = 1.70 kN C, CE = 6.22 kN C
B.	ED = 2.00 kN C, DF = 2.26 kN C, CE = 2.26 kN T
C.	ED = 0.800 kN C, DF = 1.131 kN T, CE = 2.83 kN C
D.	ED = 0.400 kN C, DF = 2.26 kN T, CE = 4.53 kN C

Answer: Option D

Explanation:

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11.

pg6-9

Determine the force in members GF, CF, CD of the symmetric roof truss and indicate whether the members are in tension or compression.

A.	CD = 1.783 kN C, CF = 0, GF = 1.427 kN T
B.	CD = 3.48 kN C, CF = 00904 kN T, GF = 1.783 kN T
C.	CD = 2.79 kN C, CF = 0.723 kN T, GF = 1.427 kN T
D.	CD = 2.23 kN C, CF = 0, GF = 1.783 kN T

Answer: Option D

Explanation:

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12.

pg6-7

A crane is constructed from two side trusses. If a load of 4 kN is suspended from one of these trusses as shown, determine the force in members FG, GK, and <KJ. State whether the members are in tension or compression. Assume the joints are pin-connected.

A.	KG = 2.66 kN C, KJ = 4.00 kN C, FG = 5.96 kN T
B.	KG = 5.66 kN T, KJ = 4.00 kN C, FG = 17.89 kN T
C.	KG = 0, KJ = 4.00 kN C, FG = 8.94 kN T
D.	KG = 1.886 kN C, KJ = 4.00 kN C, FG = 5.96 kN T

Answer: Option D

Explanation:

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13.

pg6-14

The floor beams AB and BC are stiffened using the two tie rods CD and AD. Determine the force along each rod. Assume the three contacting members at B are smooth and the joints at A, C, and D are pins.

A.	T = 480 lb
B.	T = 520 lb
C.	T = 1248 lb
D.	T = 1152 lb

Answer: Option C

Explanation:

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14.

pg6-8

Determine the force in members FF, FB, and BC of the Fink truss and indicate whether the members are in tension or compression.

A.	BF = 693 lb T, FG = 1800 lb C, BC = 1212 lb T
B.	BF = 8660 lb C, FG = 3600 lb C, BC = 1212 lb T
C.	BF = 3810 lb T, FG = 3600 lb C, BC = 1212 lb T
D.	BF = 1732 lb T, FG = 2400 lb C, BC = 1212 lb T

Answer: Option A

Explanation:

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15.

pg6-13

Determine the magnitude of the forces in pins B and D of the four-member frame.

A.	B = 503 lb, D = 225 lb
B.	B = 225 lb, D = 503 lb
C.	B = 56.3 lb, D = 125.8 lb
D.	B = 125.8 lb, D = 112.5 lb

Answer: Option C

Explanation:

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16.

pg6-10a

The principles of a differential chain block are indicated schematically in the figure. Determine the magnitude of force P needed to support the 800-N force. Also compute the distance x where the cable must be attached to bar AB so the bar remains horizontal. All pulleys have a radius of 60 mm.

A.	P = 80 N, x = 240 mm
B.	P = 80 N, x = 180 mm
C.	P = 40 N, x = 180 mm
D.	P = 40 N, x = 240 mm

Answer: Option D

Explanation:

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Structural Analysis - General Questions (2)

Structural Analysis - General Questions

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