D2 ftC4 ft2 ft5ftBS60°1ft2. A 4' x 8' sheet of plywood is set against column CD. The sheet of plywood is uniform andweighs 40 lbs (applied at its center of gravity). It rests at A and B against nails on small woodblocks. (Note the coordinate system differs from usual.)a) Draw the free body diagram for the plywood sheetb) Using a moment around axis O-x, determine the reaction at C

Given:- The dimension of the sheet of plywood = 4'×8' The weight of the sheet = 40 lbs (at the…

Answered: D 2 ft C 4 ft 2 ft 5ft BS 60° 1ft 2. A…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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The bar clamp is being used to clamp two boards together while the glue between them cures. What torque M must be applied to the handle of the screw in order to produce a 68-lb compression between the boards? The 0.375-in.-diameter single-thread screw has 18 square threads per inch, and the effective coefficient of friction is 0.27. Neglect any friction in the pivot contact at C. What torque M' is required to loosen the clamp? Answers: M = M' = i i C lb-in. lb-in. M
only HANDWRITTEN answer needed ( NOT TYPED)
Determine the forces in members BC and CG. The forces are positive if in tension, negative if in compression.
A concrete beam has a width of 400 mm. It is reinforced at the bottom fiber with 4 - 28 mm deformed steel bars. Use f'c= (49) MPa and fy = (362) MPa. Determine the effective depth of the beam such that the design falls the boundary (a) between compression and transition zones as well as (b) between transition and tension zones. (IS CODE can be used)
A reinforced concrete beam is 250 mm wide with an effective depth of 400 mm. Use f'c= 21 MPa and fy = 275 MPa. The section is reinforced with 4 - $25mm bars. U = 1.2D + 1.6L. a. Compute for the nominal flexural strength. b. Calculate the design flexural strength of the section. c. Calculate the safe service live load moment if the service moment from total dead load is 96 kN-m. d. If the beam is 5m long with a moment from total dead load of 96 kN-m, find the maximum moving concentrated service live load that can be supported by the beam.
Determine the stress in the steel and in the wood if the beam is subjected to a moment of 750 lb-ft. Esteel=29,000 ksi Ewood=1600 ksi
The square wood beam ABEF is reinforced at the bottom by a steel plate with a rectangularcross-section EFCD. a = 150mm, b = 150mm, h = 20mm, ?= 2m. The simply supported beamis subject to a uniformly distributed load with intensity ?.(1) Verify that the maximum bending moment in the beam is ?= ??2/8 ;(2) If the ratio of elastic moduli is ?steel/E wood= 8, determine the largest allowable intensity ?of the uniformly distributed load that can be applied. The working stresses are 2MPa for woodand 10MPa for steel.
A wood beam 200 mm wide by 240 mm deep is reinforced with 2-200 mm by 10mm thick steel plates at the top and bottom. The allowable bending stresses are 120 MPa for steel and 8 MPa for wood. Use Es/Ew = 20. Determine the maximum bending moment that can be carried safely by the beam. Convert wood to steel. a. Locate the NA from the bottom in mm ( Ÿ )b. Find the Moment of Inertia of the composite section in mm4 ( INA )c. Find the max moment capacity of the section in kN-m
Calculate its nominal moment strength (M.) of the section. 18 in. 24 in. • Compressive strength of concrete f.'= 4 ksi • Yield strength of steel rebar f, = 60 ksi • Modulus of elasticity for steel E, = 29,000 ksi • Modulus of elasticity for concrete E. = 57,000, f psi • Rupture modulus of concrete f, = 7.5/f psi 2 #8 6 in. %3D 10 in. -10 in.
The 6 x 12-in. timber beam has been strengthened by bolting to it the steel reinforcement shown. The modulus of elasticity for wood is 1.8 x 106 psi and for steel, 29 × 106 psi. Knowing that the beam is bent about a horizontal axis by a couple of moment M = 454 kip-in., determine the maximum stress in the wood and in the steel. -6 in. M "+ 12 in. CS X 115 The maximum compressive stress in the block of wood is The maximum tensile stress in the steel is ksi. ksi (include a negative sign).
Current Attempt in Progress A flitch beam can be fabricated by sandwiching two steel plates (2) between three wood boards (1). Dimensions for the cross section are b= 1.2 in., d = 7.3 in., andt-0.30 in. The elastic moduli of the wood and steel are E = 1700 ksi and E2 = 31500 ksi, respectively. For a bending moment of M, = +13.5 kip-ft, determine: (a) the normal stress in each material at point H, which is located at a distance of a = 1.8 in. above the z centroidal axis. (b) the normal strain in each material at point H. (c) the magnitudes of the maximum bending stress in each material. (2) (2) a (1) (1) b. Answer: (a) Owood(H) = i psi Osteel(H) - i psi (b) Ewood(H) = i Esteel(H) = με (c) Owood(max) = psi Osteel(max) = psi Attempts: 0 of 1 used Submit Answer Save for Later
Three wood boards, each 4 in wide, are joined by the 3/4-in-diameter bolt. If the working stresses for wood are 800 psi in tension and 1500 psi in bearing, find the largest allowable value of the force P. P 1 in. P 2 in. P 1 in. in. 4

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