4.3) The design moment strength M, is A) 880 ft-kips B) 887 ft-kips C) 1038 ft-kips D) 934 ft-kips stranath V., is db.
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please solve part 4.3
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- 2) Find the axial stresses of menbers FD, GD, GE State if it is tensile or Compressive. 4M 3M A LE 3m G 20 RN Go KNA steel column is pin connected at the top and bottom which is laterally braced and subjected to transverse loading. It carries an axial load of 800 kN and a 70 kN-m moment. Use ASD. The steel section has the following properties: A = 13000 mm² r = 94 mm Ix = 300 x 106 mm4 Sx = 1200 x 103 mm³ L = 3.6 m Yield stress Fy = 248 MPa Axial compressive stress that would be permitted if axial force alone existed, Fa = 115 MPa Compressive bending stress that would be permitted if bending moment alone existed, Fb = 148 MPa Members subjected to both axial compression and bending stresses shall be proportioned to satisfy the following requirements: Mry + 9 Mex Mey Determine the axial compressive stress if axial load only existed. Pr 8 Mrx + Pe 75.82 MPa 61.54 MPa 33.96 MPa 16.25 MPa Determine the bending stress if bending moment alone existed. 76.25 MPa O58.33 MPa 13.33 MPa ≤ 1.0 16.59 MPa Determine the value of both axial and bending moment interaction value, considering the amplification due to…Q4) A cast iron beam is of I – section as shown in Figure (3). The beam is simply supported on a span of 5 m. If the tensile stress is not to exceed 20 N/mm2, find the safe uniformly load which the beam can carry. Find also the maximum compressive stress. I 80 mm- 20 mm 3 169.34 mm 200 mm 2) 20 mm A 90.66 mm 40 mm 100 mm Figure (3)
- Assume the transformed steel section reaches its allowable bending stress first. Calculate the magnitude of the allowable bending moment that can be applied in this case. Answer: M- i Ib-in.A flexural member is fabricated from two flange plates 1/2x16 and a web plate 1/4x20, thusforming a built-up ‘I’ shape member. The yield stress of the steel is 50 ksi.a. Compute the plastic section modulus Z and the plastic moment Mp with respect to the majoraxis.b. Compute the section modulus S and the plastic moment My with respect to the major axis6- For a simply supported beam with b=300 mm and d=500 mm, if f = 63MPa, f, = 280 MPa and the net tensile strain is greater than 0.005, then the maximum steel ratio equal............ (a) 0.0406 (b) 0.0310 (c) 0.0287 (d) 0.0180 (e) None
- The 200-mm square aluminum block supports a compressive load of 300 kN. What is the normal stress acting on section a–a in MPa What is the shearing stress acting on section a–a in MPa The lapbelt assembly is to be subjected to a force of 800 N. What is the required thickness t in mm. of the belt if the allowable tensile stress for the material is 10 MPa?A flexural member is fabricated from two flange plates 1/2in x 16in and a web plate 1/4in x 20in. The yield stress of the steel is 50 ksi. a. Compute the elastic section modulus S and the yield moment My with respect to the major principal axis. b. Compute the plastic section modulus Z and the plastic moment Mp with respect to the major principal axis.The light rigid bar ABCD as shown is pinned at B and connected to two vertical rods. Assuming that the bar was initially horizontal and the rods stress-free, determine the allowable load P if the stresses are not to exceed 60 MPa and 150 MPa in the aluminium and steel, respectively.
- A 20-mm-thick plate is bolted to the flange of a T-beam to form a 200 mm 20 mm built-up beam. If the beam is subjected to a vertical shear force of V = 200 kN, determine (a) the maximum shear stress in the beam, 10 mm 300 mm (b) the required spacing s of the bolts. The diameter of each bolt is 19 mm, and the allowable average shear stress in the bolts is 140 MPa. 10 mmUse 2015 NSCP. A compression member shown below with Fy = 50 ksi 30′ W12 x 87 A992 steel 1. Which of the following most nearly gives the value of critical buckling stress in ksi? 2. Which of the following most nearly gives the nominal strength in kips? 3. Considering ASD. Which of the following most nearly gives the allowable strength in kips? 4. Considering LRFD. Which of the following most nearly gives the design strength in kips?2) A solid rod with the given dimension shown in Fig. Axial loads are applied at the positions indicated. Find the f a) The max Compressive stress in the system P-60 kN Aluminum A=400 mm b) The max Tensile stress in the system P-60 kN Steel A = 500 mm² Bronze A-200 mm² 4P 2.5 m 1.5 m 2.0 m 2P