Question 3 (25 points) The beam is made from three boards nailed together as shown. If...
6-58 The beam is made from three boards nailed together as shown. If the moment acting on the cross section is M = 1 kip·ft, determine the maximum bending stress in the beam. Sketch a three-dimensional view of the stress distribution acting over the cross section. 6-59 If M = 1 kip·ft, determine the resultant force the bending stresses produce on the top board A of the beam.
3. The beam is made from four boards nailed together as shown. If the nails can each support a shear force of 100 lb., determine their required spacing s' and s if the beam is subjected to a shear of V-700Lb 1 in. 1 in. 2 in. 910 in. 1 in. 10 in. в, 1.5 in
The beam is fabricated from four boards nailed together as shown. Determine the shear stress at points A and B on the web of the beam located at section a-a. Also, determine the spacing of the nails along the sides and the top of the beam if the shear force of each nail along the sides is 197 lb and the top is 1.38 kip. 8000 lb 150 lb/ 3 in 10 12 la 115ft 11.50 /
A wooden beam is fabricated from three boards, which are fastened together with screws, as shown. The screws are uniformly spaced along the span of the beam at intervals of 260 mm. In service, the beam will be positioned so that bending occurs about the z axis. The maximum bending moment in the beam is Mz =ー3.54 kN-m, and the maximum shear force in the beam is vy =-3.67 kN. Assume s=260 mm, b1 = 33 mm, b2 = 200...
The beam having a cross-section as shown is subjected to the distributed load w (1) Calculate the moment of inertia, I (2) If the allowable maximum normal stress ơmax-20 MPa, determine the largest distributed load 5. w. (3) If w 1.5 kN/m, determine the maximum bending stress in the beam. Sketch the stress distribution acting over the cross-section. 100 mm 50mm 120 mm 3 m50 mm 3 m
A wooden beam is fabricated from three boards, which are
fastened together with screws, as shown. The screws are uniformly
spaced along the span of the beam at intervals of 100 mm. In
service, the beam will be positioned so that bending occurs about
the z axis. The maximum bending moment in the beam is
Mz = −4.84 kN-m, and the maximum shear force in the beam
is Vy = −2.96 kN. Assume s=100 mm,
b1= 32 mm, b2 =...
Problem #2) Three boards that are glued together to form a single beam whose cross section is shown below. The moment acting about the z-axis is 1000 ft-lb and the vertical shear force is 400 lb. (20 points) a. Find the vertical centroid of the section, y. b. Find the moment of inertia of the section taken about a horizontal z-axis through the centroid. c. Determine the bending stress the wood must be able to resist assuming compression controls. d....
For the beam shown in the figure below a. Draw the shear and moment diagrams for this beam b. Calculate the maximum bending stress, maximum axial stress, and maximum shear stress acting on the beam cross section c. Sketch the distributions of shear stresses and bending stresses acting on the beam cross section at the locations where these stresses are maximum.
The beam has the rectangular cross section shown. If w 1 kN/m, determine the maximum bending stress in the beam. Sketch the stress distribution acting over the cross section.
P9.049 A wooden beam is fabricated from three boards, which are fastened together with screws, as shown. The screws are uniformly spaced along the span of the beam at intervals of 240 mm. In service, the beam will be positioned so that bending occurs about the z axis. The maximum bending moment in the beam is Mz--4.99 kN-m, and the maximum shear force in the beam is Vy -3.25 kN. Assume s=240 mm, b,-37 mm, b2=240 mm, d1=190 mm, d2=...