2. The manufactured wood beam carries the concentrated loads shown. What is the maximum safe value of P if the working stress in shear is 6 MPa? 20 mm , 80 mm |3P 2 m 2 m 70 mm NA B 160 mm C I = 15.52 × 10° mm* 1.0 m 1.0 m
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- A W1422 acts compositely with a 4-inch-thick floor slab whose effective width b is 90 inches. The beams are spaced at 7 feet 6 inches, and the span length is 30 feet. The superimposed loads are as follows: construction load = 20 psf, partition load = 10 psf, weight of ceiling and light fixtures = 5 psf, and live load = 60 psf, A992 steel is used, and fc=4 ksi. Determine whether the flexural strength is adequate. a. Use LRFD. b. Use ASD.The working load P on the propped cantilever shown are each 150 kN. If the yield stress of mild steel is 300 MPa, determine the plastic section modulus in cubic millimeters, using a load factor of 1.75 against collapse. (express your response this way, x,xxX,XXX.X). Pu Pu 1.1 2m B A 2m 2mOne bolt 34 in-16 UNF × 2 12 in. SAE grade 5 is subjected to a P load of 6 kip at atension joint. The initial stress is Fi = 25 kip. The stiffness of the bolt and the joint are kb = 6.50and km = 13.8 Mlbf / in, respectively.a) Determine the preload and service load stresses on the bolt. Compare them withthe minimum SAE test strength of the bolt.
- S9. Knowing that the allowable normal stress for the steel used is 150 MPa, select the most economical metric wide-flange beam to support the loading shown in Figure 9.0. 50 kN/m A D B -2.4 m- 0.8 m 0.8 m Figure 9.0 $10. Determine the average shearing stress in the web of the beam indicated and check whether the design obtained earlier for that beam is acceptable, knowing that the allowable shearing stress for the steel used is 110 MPa. Consider the beam of $9 above.The compound bar carries axial loads as shown. Determine the maximum allowable value of P if the change in length of the entire bar is limited to 0.08 inch and the working stresses listed in the table are not to be exceeded. Steel 2 ft Bronze 4 ft Aluminum 3 ft 2P 3P 4P A (in.?) E (psi) a. (psi) Steel 0.75 30 x 10 20000 12 x 10 10 x 10 Bronze 1.00 18000 Aluminum 0.50 12000Question 8 1 p The rectangular doubly reinforcement stress concrete block with the arrangement of reinforcement of 2N28 bars on top and 3N28 bars on bottom. The modulus of elasticity are Ec=23,500MPa and Es = 200,000MPa. Dead load is 18KN/m and live load is 12KN/m. f'c = 25MPa 800 TE 730 N12 ligs (fsv.t-500MPa) Ast = 3N28 350 Span = 10m Figure 3 Calculate the concrete stresses in tension and compression of the reinforcement concrete beam shown in Figure 3. Compression concrete stress Choose ] Tension Concrete stress Choose]
- PROBLEM 2: Determine the smallest safe cross-sectional areas, in mm?, of members Cl and CD for the wooden truss shown below. The working stresses are 10 MPa in tension and 8 MPa in compression. (The working stress in compression is reduced due to the danger of buckling.) 8 kN 4 kN 4 kN FINAL ANSWERS 4 kN 4 kN 4 kN - 4 kN Acı mm? K 3.5 m ACD mm2 A в с D E F PA - 6 @ 4 m = 24 mGIVEN: Solid alumınum bar shown: 4 in. by4 in. E = 10 x 10° psi oy = 36 ksi 4000 2000 1b 4000 16 B 12' REQ’D: A) Load in each section of the bar (state whether C or T) PAB = Pac PCD = B) Maximum axial stress in the bar. In which section does this occur? C) Final length of the barA simply supported beam is reinforced with 4-ø28 mm at the bottom and 2-ø20 mm at the top of the beam, Concrete covering to centroid of reinforcement is 70 mm at the top and 64 mm at the bottom of the beam. The beam has a gross depth of 450 mm and gross width of 300 mm. fc'=28 MPa, fy=415 MPa. Assume bars laid out in single layer. Calculate the following if the limitin tensile steel strains is 0.004 for a ductile failure: Depth of the neutral axis from the extreme concrete compression fiber to the nearest whole number = _____________mm Design strength of the beam section to the nearest whole number =____________ kN-m Maximum service uniform live load over the entire span in addition to a DL = 20 kN/m (including the weight of the beam) if it has a span of 6 m = _____________ kN/m (to the nearest whole number)
- 8:13 PM Tue 2 Mar •?n 32% A docs.google.com Q2 Q2: A cantilever beam AB, loaded by a uniform load and a concentrated load, is constructed of a channel section. Find the maximum tensile stress g and maximum compressive stress gc. 15 N 20 N/m 40 mm 40 mm E 225 mm-- 200 mm mm 2.5m 0.5 m Option 1 Send me a copy of my responses.3. The manufactures wood beam carries a uniformly distributed load of intensity wo Determine the largest safe value of w, if the shear stress in the wood is limited to 300psi. 1.0 ft Wo 4 ft 1.0 ft 0.75 in. 4 in. 0.75 in. 5 in. -0.75 in. -NA I= 46.7 in.* TRUTT 50 kN/m 8m TIZI SLAB THICKNESS 150mm 2500 mm fe'= 21 MPa fy = 414 тра Cc = 40mm spacer barp=25mm Say bw= 0.6h DESIGN THE T-BEAM AND SHOW THAT TENSION STEEL YIELDS AND THE BEAM IS TENSION CONTROLLED