8. Design a column with an effective length of 20 ft to support a dead load of 75 k, a live load of 100 k (assume L < 100 psf), and an earthquake load of 160 k. Select the lightest W10 of A992 steel.
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- 2. Determine the lightest W-shape for a column 30' tall in a braced frame. The column is braced at mid-height in the weak direction. The loads are 100k dead load and 200k live load. The bottom of the column is pinned and the top of the column is constrained in rotation.* Use A572 Grade 60 steel. *Not tronslation.A 6.1 m long steel column is fixed at its base and pinned at the top end. The cross section is a W360×57. The steel has a yield strength oy = 250 MPa. a) Determine the critical load, Per b) What is the maximum column length to ensure failure due to yielding instead of buckling?Of a reinforced concrete column under pure axial load given its cross-section dimensions, a) Determine the total longitudinal reinforcement area of the section you are reinforced according to the ratio of Ø18 reinforcements and the minimum reinforcement. b) Calculate the amount of axial load that the section can bear. m=1,n=4 Cover value will be taken as 35 mm. For the material, it will use C25/30 – S420
- i need the answer quicklyProblem 1.A compression member is 30 feet long. It is made up of ASTM A500 Grade B (Fy= 46 ksi and Fu = 58 ksi) rectangular HSS 12x8x3/16. Assume k-value equals to 1.0 and Q= 1.0 . If the member carries an axial load composed of 26 kips dead load and 77 kips live load, is the member adequate? Use E=29000 ksi. a. Solve for the gross area.b. Compute for the design strength against squash load.c. Solve for the moment of inertia and radius of gyration for both axes. (X-X and Y-Y)d. Compute for the design strength against global buckling.e. Solve for kL/rfor both axes.(X-X and Y-Y)f. Solve for Fcr.g. Solve for design strength against local buckling.Check first if Local Buckling is applicable.h. Compute for the ultimate load to be carried by the member. Use LRFDLoad Combination.i. Does this member have enough strength? Why or why not?Determine collapse load Wu for continuous beam ABCDE loaded and supported as shown in figure . For span AC plastic moment of resistance is 50 % more than that of CE .
- Solve itA reinforced concrete cantilever beam is shown below. The beam cross section is a rectangle, 12 inches deep by 18 inches wide. Material properties are: - Concrete weight: wt = 150 pcf - Concrete compressive strength: f'c = 4000 psi - Concrete tensile strength: f't = 400 psi - Steel tensile strength: fy = 60 ksi - Stirrup consists of #4 bar - Beam is not exposed to weather or in contact with soil. Determine if the beam will crack under its own weight, if its self-weight is 250lb/ft. 10 ft -18" BEAM SECTION beam will crack beam will not crack unknown, not enough information to calculateFigure 1 shows the cross-section of a heavily welded I-section steel column under axial compression. The yield stress of the steel section is 300 MPa. (a) Check the slenderness of the flanges and webs. (b) Determine the effective and gross areas of the cross-section. (c) Determine the design axial capacity of the cross-section. 380 E 10 425 -8 Figure 1. Cross-section of the rectangular hollow section steel column (Units: mm)
- A compression member AB (HE 400 B) is pinned at both ends and braced in the weak direction as shown in the figure. Material and geometrical properties are given below. For the given loading and ASD load combination (PG+Pq=3500 KN), determine whether the section is satisfactory or not. Material: 5355 F355 MPa F 510 MPa E= 200000 MPa Section properties (HE 400 B): A: 19780 mm² d: 400 mm h: 298 mm t: 13.5 mm. tr: 24 mm b: 300 mm i,: 170.8 mm İy: 74 mm B X -BRACING IN THE WEAKDIRECTIONa. Provide schematic diagrams and photos that show application of a column/axial member in real life. Explain function of the member for the selected application. b. Identify and determine: i) Boundary/end conditions (support for the column/axial member such as fixed to the wall, pin supported and etc.). External axial load that act onto the column/axial member. Show all the calculations performed in order to estimate the axial load. Properties of the column/axial member (such as Young's modulus, yield/ultimate stress, proportional limit, cross section (provide figure), dimensions and etc.). c. Determine critical load and critical stress for the column/axial member. Justify selection of the formulas for the calculations. d. Calculate and show that the column/axial member is safe and can withstand the load in part b. ii). Determine the maximum allowable eccentricity for the column/axial member. Determine the maximum deflection of the column/axial member (at the center) based on the…5 5a 5b 5c Alaterally supported beam was designed for flexure. The beam is safe for shear & deflection. The most economical section is W 8 x 13 however the said section is not readily available at the time of the construction. If you are the engineer in charge of the construction what alternative section will be the best replacement? Why? Use: Fy=248 MPa: E=200,000 MPa Designation Ag (mm2) Weight kg/m 1910 19 30 width 24 flange. thickness d (depth) mm 200.41 bf 100.06 W8 x 10 4.32 15 expla'n briefly your cho'ce. (transform your comparative analys's 'nto a narat've form to support your cho'ce) W8 x 13 2477 202.05 101.60 6.48 W6 x 20 3787 157.48 9.27 152.91 102.36 W6 x 16 3058 159.51 10.29 tf Web 5.21 thickness tw Elastic Properties mm 4 Ix x 106 mm 3 Sx x 103 5.84 6.60 6.60 13 16 17 13 126 162 220 167 mm rx 81.79 81.53 67.56 66.04 mm 4 lyx 106 1 1 6 2 mm 3 Sy x 106 17 22 72 36 mm ry 21.36 21.41 38.10244 24.54 Plastic properties mm 3 Zx x 103 145 187 244 192 mm 3 Zyx 103 27 35 110 56…