Assume the member shown in a HSS section with x=5 in. and ry=3 in. Determine the controlling L/r ratio for design of the column. 6' 16' 10' Y-ахis х-ахis
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- Problem 20. The member shown is part of a braced frame. Bending is about the x-axis and the steel is ASTM A992. For the member shown, the factor Cm that will be used to compute the amplification factor is 0.2 0.4 0.6 1.0 21. For the member shown in problem 20, using ASD, compute the moment amplification factor B1. a 1.0 b 1.04 c 1.07 d 1.09A column is formed by welding two A36 MC sections back-to- back. The column is 32 feet long. With respect to x-axis buckling, supports are hinged at the top, and fixed at the bottom. With respect to y-axis buckling, supports are pinned at both ends. Additionally, hinge supports are provided at the mid-height perpendicular to both axes. Use the recommended k-values. Below are the properties of a single MC section: A=6.45 in2, d=10 in, bf-3.32 in, x=0.990 in, Ix=102 in¹, ly=6.40 in, rx-3.99 in, ry=0.997 inFor the column shown below, create an interaction diagram on Excel for bending about the strong axis and email it to the instructor. Show the nominal strength as well as the ACI strength including the strength reduction factor, . Utilize the full capacity of the ACI 318. For the graph, the y-axis shall be the axial load and the x-axis shall be the moment. Plot the factored loads, as points, for the various combinations and indicate them in a key. Additionally, plot the same load on the appropriate interaction diagram from the textbook and the provided a copy of that interaction diagram along with the spreadsheet. All work must be your own. Do not collaborate with classmates. Given: f= 4,000 psi fy = 60,000 psi Comb. 120 Design Loads Pu K 780 525 404 570 160 3 4 5 Muy FT-K 62 180 275 145 320 18" 2.0"-> ..... V 20" 10-#7 Total 2.0" X
- Question 13 of 14 - /5 View Policies Current Attempt in Progress Determine the coordinates of the mass center of the welded assembly of uniform slender rods made from the same bar stock. a a 1.36 a Answers: (X, Y, Z) = ( i ) a i i ... II4.3-4 Determine the available strength of the compression member shown in Figure P4.3-4. in each of the following ways: a. Use AISC Equation E3-2 or E3-3. Compute both the design strength for LRFD and the allowable strength for ASD. 15 HSS 10x6x ASTM A500, Grade B steel (Fy=46 ksi) 2/3Determine the force in each member of the loaded truss. The forces are positive if in tension, negative if in compression. Assume F-2770 N, a-2.1m, b-4.2 m, 0 = 48% Answers: AB- AC- AD- BC- B CD i i i b 8 N N N N N
- 3-3 A rectangular section with width b=200mm and depth h=450mm is reinforced with 4 16 of HRB400, The design bending moment is M=100KN •m. Is the section safe or not? F00Q1: A circular steel rod ABCD is loaded as shown below. Use the following data to Find the maximum stress and the deformation (AL) of the rod. Take E = 200 L3=1350 GPa. L2=2150 A L1 E Dia. 1 L1=1350 Р3-25 P1 L2 Dia. 2 P2=40 P2 P1=105 Dia2=45 L3 P3 D D 35 mm o Dia1=60For the beam below, determine the following, assume EI is constant. What is FEMAB in k-ft? -18 --96 Select the correct response: -69 2 k/ft 18 24ft
- The AD beam, which is fixed at left end, is under various loads as shown below. a) Draw internal load diagrams (Nx, Vy, M2) using the method of section. b) Determine the state of stress at points G, H and I for section B. c) For the corresponding points, indicate the results (i.e. stress components) on a differential element. b2 A B G М F2 2l h bi GIVEN DATA: Fo = 10000 N, F1 1200 N, F2 = 1000 N, qo = 50 N/cm, Mo = 50000 Nem, l = 25 cm bi = 10 cm, b2 = 20 cm, h 12 cm, t 1 cmSelect all zero-force members in the truss shown below. Check the box for zero- force members 3 m 3 m 12 m, 8 @ 1.5 m DE O LK ЕР O HF O BC BM EF OM CD BN LO O DK FI O coDetermine the force in members FE, FB, and BC of the truss and state if the members are in tension or compression. After sectioning the truss, solve for each force directly using a single equilibrium equation to obtain each force. Assume that all joints are pin connected. P-800 lb and P-1300 lb. (Figure 1) Figure 15 h 100 -100 (1 of 1 -10 - Part A Determine the force in member FE of the truss Express your answer in kilopounds to three significant figures. Enter negative value in the case of compression and positive value in the case of tension. 195| ΑΣΦ. 114 voc FFE- Submit Part B Fra Submit Request Answer Determine the force in member FB of the truss. Express your answer in kilopounds to three significant figures. Enter negative value in the case of compression and positive value in the case of tension. VAE Ivec Part C Request Answer ? ? kip kip