An industrial building with 5 bags, each 4m wide, has a column of height 5m. The two end and mid boys are braced by rods, as shown in the figure. Each column carries an axial load of 140 kN. The design force in each brace is (in kN) 4m 4m 4m 4m 4m Up to two decimal places- 5m
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- A 300 lb crate is on top of a 70 Ib pickup tailgate. Determine the tension in Ib in each of the two restraining cables. The weight of crate and tailgate acts n G2 and G1 respectively. 14" B G2 12" G1 9.5"- 2.75"L+I 7 (ab)" a-bm f 2 1 TY –314 - 2- 6 STATICS ENGINEERS MECHANICS CHAPTER Lecture Notes: = m %3D EXAMPLE: 22 einber 6O 3.45 m 1.25 m + 3 Pz 1.85 m 1 1.22 m Wa120 IN A weight W• 120 kM is being supported by steel sections with force T. force and force C. The coordinates of A. B. C. and D are given. Assume that E is the origin (0.0.0). Determine Forces T. F, and C.A typical rigid bar AB of the length 5m for a cantilever type car shed as shown in figure is hinged at B and supported in a horizontal position by 2 inclined steel wires of diameter 3cm each is placed at a distance of 1.5 m and 3 m respectively from end A . a) Find safe dead load that can be applied at A . Assume load factor of 1.5 . Take fy=460N/mm2 b) If end B is now replaced with a fixed support and with a fixed end moment of 46kNm. Find the safe load that can be applied at joint A .
- What is the value in kips of the axial force in Column C2 on the first story? Floor System All question pertain to the following floor plan. The floor load is 60 lb/ft?. Ignore the self weight of the members. The building is three stories tall. I- I- I- GZ 20 10! C2 B1 ze lo' to I. エ- 30' 25F1 Determine the reaction forces for girder G-1. Column A Beam B-1 L1 -0 Beam B-2 F2 Girder G-1 Please round to the nearest one. Reaction force for Girder G-1 (Column A side) = Girder G-2 L1 After the initial calculation, we determined the following information: • The reaction force for Beam B-2 (Girder G-1 side) = 17,890 lbs • The reaction force for Beam B-3 (Girder G-1 side) = 15,685 lbs Reaction force for Girder G-1 (Column B side) = 80 F3 • Live load 50 psf • Dead load: (1) Slab = 50 psf, (2) Deck = 10 psf, (3) Mechanical equipment = 8 psf, (4) Suspended ceiling = 8 psf (5) Beam = 25 lb/ft, (6) Girder = 35 lb/ft • Beam and Girder spacing:: (1) L1 = 14 ft, (2) L2 = 10 ft, (3) L3 = 10 ft Beam B-3 000 000 F4 lbs open lbs F5 L1 Column B Beam B-4 L2 F6 L3 MacBook Air ← F7 F8Compute the moment of the force F about point A for the conditions shown below. Determine Moment MF/A 5.6 O 6.5 O 5,4 3'-0" BA 50⁰ 70⁰ -X F = 2 kips
- A rigid bar, pinned at O, is supported by two identical springs as shown in the figure. Each spring consists of 20 turns of ¾ in diameter wire having a mean diameter of 6in. Determine the maximum load W (in Ib) that may be supported if the shearing stress in the springs is limited to 20ksi.Situation 8: Light grade steel channels are used as purlins as shown in the figure. The top chords ofthe truss are inclined at 1V:4H. The trusses are spaced at 6m on center. The purlins are spaced at 6m on center. The purlins are spaced at 1.20m on centers. The roof are as follows: Dead load including roof materials 720MPA 1,000MPA 1,440MPA Live load Wind load Wind pressure coefficient Windward Leeward 0.20 0.60 Channel properties Section modulus, S Section modulus, S Weight 6.19x10*mm 1.38x10*mm %3D 79/m The allowable bending stresses are Ex = 207MPA and E = 207MPA. Assume that all the loads pass through the centroid of the channels. 1.20 1.20 EEÉËÈEE Sagrod 21. Which of the following mostnearly gives the maximum bending stress, fex, for the dead and live load combination (DL+LL)? a. 127.11MPA c. 132.20MP. b. 151.14MPa d. 169.48MPA 22. Which ofthe following most nearly gives the maximum bending stress, f, for the dead and live load combination (DL+LL)? а. 169.48MPа c. 127.11MPA d.…The following beam is pin connected at point A and held by cable BDE. The beam supports a 80 kg mass at point C and subjected to non-uniform distributed load between E and C. Draw the free body diagram of the beam and calculate the support reactions at A and the tension in cable BDE. Make sure you draw FBD and show all required information to get full credit A O 2 m B 2 m E 300 N/m -1.5 m
- Civil Engineering What is the redundant force Dx used if the following primary structure solved by Force Method. (A and D are pin supported). 8 KN/m C B M3 R1 KN/m 4 KN M1 R2 X1 Α' KN X2 M2 1.8m X3 D R3 KN 9mThe floor system shown below supports a uniform dead load of 100 lb/ft² and a uniform live load of 40 lb/ft?. Draw the loads with magnitudes on the following structural members: а) BI b) В2 с) ВЗ d) B4 e) Gl f) G2 g) G4 6 @ 7' = 42' C4 G1 B3 B2 2 @ 15' = 30' G4 G3 G2 BT 5 @ 6' = 30' 42' 36' For the same floor plan shown above and assuming the same floor loads and that the building consists of four floors, determine the following: a) The dead load on column Cl in the first floor. b) The live load on column C2 in the second floor. Consider live load reduction. c) The sum of the dead plus live loads on column C3 in the third floor. Consider live load reduction. OTWhat is the internal force in member AB? A. 750 N , T B. 450 N , T C. 750 N , C D. 450 N , CSHOW SOLUTIONS