A round spiral column having a diameter of 450 mm reinforced with six 25 mm bars having fy = 345 MPa. If the service axial dead load is 900 kN, determine the safe axial live load of the column. Use fc’ = 34 MPa.
Use National Structural Code of the Philippines NSCP 2015, if needed.
A round spiral column having a diameter of 450 mm reinforced with six 25 mm bars...
2. Verify that a built-up ASTM A572 Grade 50 (Fy - 345 MPa) column with PL 205 x 25 mm flanges and PL 380 * 6 mn web is sufficient to carry a dead load of 300 kN and live load of 900 KN in axial compression. The column, having an unbraced length of 8 meters, is braced at the midpoint about the weak axts, the ends are pinned in both axes. (Use ASD, 15 pts)
For a braced rectangular tied column with bars equally distributed along four sides, using the following design data: Axial dead load Column size 270x270 mm Pu = 981 kN Mu = 42.4 kN.m fc' = 20.7 N/mm², fy = = 414 N/mm2, y =0.6 Bar diameter 16mm with cross-sectional area 200.96 mm2
Q4 Design of isolated footings A 500 mm x 250 mm reinforced concrete column carries unfactored dead load of 1400 kN and unfactored dead load of 600 kN. The column is supported by a rectangular footing located 2.00 meters below ground level where the allowable soil bearing capacity is 292.4 KPa and unit weight is 20 kN/m2. Concrete compressive strength is 35 MPa and reinforcing steel yield strength is 420 MPa. 1. Calculate the required dimensions of a 600 mm...
A reinforced concrete beam with dimensions (300 mm * 800 mm) subjected to a service dead load moment (MD= 500 kN.m) and a service live load moment (ML = 400 kN.m). Design the section as a double reinforced section (the dimensions can't be increased). Place the compression reinforcement at 65 mm from the compression face. Compressive strength of concrete; fc = 28 MPa, yielding stress of reinforcement; fy= 420 MPa. Assume 30 mm to be used in the tension (two...
reinforced concrete design , ACI code Q4 Design of isolated footings A 500 mm x 250 mm reinforced concrete column carries unfactored dead load of 1400 kN and unfactored dead load of 600 kN. The column is supported by a rectangular footing located 2.00 meters below ground level where the allowable soil bearing capacity is 292.4 KPa and unit weight is 20 kN/m2. Concrete compressive strength is 35 MPa and reinforcing steel yield strength is 420 MPa. 1. Calculate the...
Show Diagrams Case 2: Design of Short Columns - Small Eccentricity Determine whether the spiral column of cross section shown in Figure 2.1 is adequate to carry a factored axial load Pu of 540 kips. Assume small eccentricity. Check the spiral. Use fc 4000 psi and fy -60,000 psi. 큠.φ @ 2 7-'8 bars 1cover Figure 2.1 Spiral Column Case 2: Design of Short Columns - Small Eccentricity Determine whether the spiral column of cross section shown in Figure 2.1...
1. Determine if a built-up ASTM A572 Grade 5C (Ey - 345 MPa) column with PL 270 X 10 an flanges and PL 180 x 7 mm web has sufficient available strength to carry a dead load of 170 kN and a live load of 510 kn in axial compression. The column's unbraced length is 5 meters and the ends are pinned in both axes. (Use LRD, 10 pts)
A 400 mm x 400 mm column supports a DL = 500 KN, LL = 1000 KN, MDL = 600 KN-m, and MLL = 600 KN-m. It is required that the column must be placed at the center of the square footing. Assume that the weight of the footing and the soil above is to be 15% of the total service load. The soil bearing capacity is 209 KPa, fc’ = 27.6 MPa, and fy = 414 MPa. Design completely...
Design a square single column footing to support an 18 inch square interior column reinforced with 8-#10 bars. The column carries an unfactored dead load of 245 Kips that includes weight of soil and weight of footing and an unfactored live load of 20 feet below finished grade. The footing is 10 feet by 10 feet and is 30 inches thick. The allowable soil pressure is 5000 psf, fe' 4000 psi and fy 60000 psi. Concrete used shall be sand...
simply supported reinforced concrete beam of rectangular section is hung on the left end by a 400mm square post working in tension, as shown in the figure below. The beam supports a uniform dead load (DL) gf 100 KN/m (excluding its own weight) and upiform live load LL) of 40KN/m. The beam is reinforced with 025 longitudinal rebars with 40mm cleat cover to the stirrups. Material properties: fy 420 MPa, fe 25 MPa. Beam dimension b 400mm and h 600mm....