Q1// An interior column in a braced frame has the following service load forces and moments causing single curvature: Dead load Live load P = 690KN P = 880KN Mtop = 46 kN.m Mtop = 110 kN. m %3D Mpott. = -46 kN.m Мbott. = 110 kN. m %3D Using u = 8.4m, f = 27.6 MPa, fy = 414 MPa, k = 0.87, find the moment for %3D which 520mm square column must be designed.
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- An axially loaded tied column must sustain the following service loads: Total dead load = 1600 kN live load = 1000 kN required strength, U = 1.2D + 1.6L reduction factor = 0.65 f'c = 28 MPa fy = 420 MPa determine the required number of vertical bars to be distributed equally on all sides of the column if the column is 500mm square using bar diameter = 20mm a. 8, b. 4, c. 10, d. 12A short spiral column carries an axial dead load of 118 kN and an axial live load of 235 kN. Use fc’ = 27.5 MPa, fy = 414 MPa. Use U = 1.2D + 1.6L, Ф = 0.65 1. Assuming ρ = 0.01, which of the following gives the diameter of the column section? * a. 200 mm b. 215 mm c. 220 mm d. 300 mm 2. Which of the following gives the number of 16 mm diameter main bars? a 3 pcs b. 4 pcs c. 5 pcs d. 6 pcs 3. Which of the following gives the spacing of spirals? a. 10 mm Ф b. 55 mm Ф c. 60 mm Ф d. 65 mm ФA 550mmx800mm column reinforced with 12 pcs of D20mm (3 bars each on outer ends). The column carries an ultimate load of 3500kN at an eccentricity 325mm. Assuming concrete strength and steel strength to be 25MPa and 420MPa respectively. Take clear cover to be 40mm and diameter of ties to be 10mm. Determine the balanced compression depth, mm. Determine the balanced moment, kN-m. What is the design strength, kN.
- QUESTION1) Figure Q1(a) show a simply supported beam of length L = 4.8m is and built for placing Machine and Magnum frame. The combined weight of the machine is approximated by uniform load 90kN/m along x3 = 2.4 m. For of the design, its assumed that the column framed located at a distance x1 and x2 = 0.8m and resulting concentrated load P1 and P2 exerted oneach beam is taken as 150kN and 150kN, respectively. The cross section of beam show as in Figure Q1(b). (a) Determine the bending stress at point a and the maximum bending stress of the beam (b) By referring Figure Q1(a) and consider section n-n, determine the maximum shear stress and the shear stress at point a.BAL=8 mt = 13 mm-150 mm113 mmFor the steel column with both ends fixed against rotation having a tubularcross-section, determine the allowable load Pall against buckling. E=200 GPa andOy=250 MPa.Design a rectangular reinforced beam that is simply supported with a span of 15 ft. The beam is to carry a service dead load of 1.27 k/ft and service live load of 2.15 k/ft. Use fy = 60,000 psi and f’c = 4,000 psi and Wu=1.2DL + 1.6LL. Sketch the beam section.
- 1. A cantilever R.C. beam is 280 mm x 500 mm deep and is reinforced with 4- 20 mm diam bars for tension. Using an effective depth of d = 450 mm, determine if the 2.50 m long beam is adequate to carry a uniform load of 15 KN/m and a concentrated load of 10 KN at the cantilever end. Use f’c = 21 MPa, fy = 275 MPa. Neglect the weight of beam. Use n = 9 (Alternate Method of Design) Referring to #1, using the Transformed Section Method, determine of the beam is adequate or not.A short rectangular column 300 mm on one side and 400 mm on the other side. It is reinforced with 8-20-mm-diameter (28) longitudinal bars equally distributed to the shorter sides of the column. Use f’c = 21 MPa and fy = 415 MPa. A. Calculate the required spacing of 10-mm-diameter ties. s = mm B. Calculate the nominal axial strength of the column in, Pn = kN. (rounded to the nearest whole number) C. Calculate the maximum ultimate axial load the column can carry, Pu = kN. (rounded to the nearest whole number) Use nscp 2015Q#3. An aluminium strut 14 ft long has a rectangular cross section 2 in by 3.5 in. A bolt through each end secure the strut in such a way that is acts as hinged column about an axis perpendicular to 3.5 in dimension; and as fixed column about an axis perpendicular to 2 in dimension. Determine the safe central load with a factor of safety of 2 and E= 10300000 psi. Also discuss in detail about the governing column capacity and reasons behind it. SIR, PLS GIVE ME PROPER AND CORRECT ANSWER. THANKS
- 1. A cantilever R.C. beam is 280 mm x 500 mm deep and is reinforced with 4- 20 mm diam bars for tension. Using an effective depth of d = 450 mm, determine if the 2.50 m long beam is adequate to carry a uniform load of 15 KN/m and a concentrated load of 10 KN at the cantilever end. Use f’c = 21 MPa, fy = 275 MPa. Neglect the weight of beam. Use n = 9 (Alternate Method of Design) Question: Referring to #1, using the same data, determine if the cantilever beam is adequate based on strength design 2001 NSCP specifications. The 15 KN/m load is DL while the 10KN load is LL.A T-beam that traverses the center of a floor system for which bw = 300mm and d=550 mmm. The beams are 4.8 m long and spaced at 3 m on center and the slab thickness is 100mm. Determine the required steel area if the dead load moment including its own weight is 400 kN-m, live load moment is 500 kN-m, f'c = 28 Mpa and fy = 414 Mpa.A T-beam for a floor system has a slab thickness of 75 mm and a web thickness of 375 mm. It has an effective depth of 600 mm. The beam carries a dead load moment of 280 kN-m and a live load moment of 525 kN-m. It has a span of 5.4 m and a spacing center to center of 1.8 m. Use reduction factor ø=0.90, fc’=20.7 MPa, fy = 344.7 MPa.Determine the effective width of flange. Determine depth of compression flange. Determine the required steel area. See the formula in the image