Determine the no. of rivets to fasten the member BD

Statics - Zero Force Members1. Identify the zero-force members in the truss shown. 2. Redraw the truss without the zero-force members included.

2 kN The beam is made of three boards nailed together to form the double-T cross section shown. If the allowable shear force in each nail is 400 N, determine (a) the absolute maximum shear stress in the wood, B (b) the required spacing s, of the nails between A and B, 2 m 1 m (c) the required spacing sy of the nails between B and C. -150 mm- T25 mm 200 mm 25 mm 25 mm

Jse the method of joints to find all reaction and nember forces in the trusses. (2-а) (2-b) (2-c) | 6 kN 4 kN 4 kN 1.5 m 3 m 3 m 3 m 4 m 4 m 2 m 2 m

PROBLEM 2 Determine the internal force of the following members in the structure below. [ Select ] 1. DF [ Select] 2. DE [ Select ] 3. CE 20 N 40 N 40 N F 20 N D B 2 m C E G 10 m Ko OL No 4 m 4 m-- 2m -|- 2m 4 m

The force in member EF using the method of section. [Handwritten solution required]

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Rigid bar ABC is supported by member (1) at B and by a pin connection at C. Member (1) has a cross sectional area of 1.25 in.² and a yield strength of 33 ksi. The pins at B, C, and D each have a diameter of 0.5 in. and an ultimate shear strength of 78 ksi. Each pin connection is a double-shear connection. Specifications call for a minimum factor of safety in member (1) of 1.3 with respect to its yield strength. The minimum factor of safety required for pins B, C, and D is 3.1 with respect to the pin ultimate shear strength. Determine the allowable load P that may be applied to the rigid bar at A. Use overall dimensions of a = 64 in. and b = 131 in. (1) b kips P Answer: Pallow= i a B

1-7. Determine the resultant internal loading on the cross section through point D of the pliers. There is a pin at A, and the jaws at B are smooth. 20 N 20 N -120 mm- 80 mm 30° 40 mm 15 mm B

Which of the following truss members are zero-force members? Select all that apply. EF BD BC CD O DF AB