Find the development length for the compression steel of a simply supported beam if compression steel required is 710 mm" and 2622mm are used f'e= 27.6 MPa and fy = 414 MPa. %3D
Q: Answers: (a) o₁ = (b) P = i LAB i P B b LBC F b Cross section C LCD ksi, o, = ! kips. i D ! ksi.
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- Use the composite beam tables and select a W-shape and stud anchors for the following conditions: Span length = 18 6 Beam spacing = 9 ft Total slab thickness = 51 2 in. (the slab and deck combination weighs 57 psf). Lightweight concrete with a unit weight of 115 pcf is used Construction load = 20 psf Partition load = 20 psf Live load = 225 psf Fy=50 ksi and fc=4 ksi A cross section of the formed steel deck is shown in Figure P9.8-9. The maximum live-load deflection cannot exceed L/360 (use a lower-bound moment of inertia). a. Use LRFD. b. User ASD.Determine the Design Flexural Strength of W460x52 A992 Steel with the following cases: CIVIL ENGINEERING STEEL DESIGN With Continuous lateral bracing Unbraced length = 4m, Cb = 1.0 Unbraced length= 12m, Cb = 1.0 a.) b.) c.) Fy = 345 MPa Properties: d = 450mm tf = 10.8 mm 1x 212x10mm* Cw 306x10 mm" Sx** 944 x10¹mm¹ bf 142mm MY Ag - 6650mm2 Zx 1090x10'mm' Ho439mm ry = 31mm tw* 7.62mm J-211x10¹mm* ly = 6.37x10 mm rls - 38.4mm(2) PoL=280* 16' 34' PLL= 200k 18' Please select the ligutest W 12 A992 steel.
- Problem 01 Using ASD, check the adequacy of the base plate (PL400X350×19 mm) centered on a W12X152 column as shown. It is resting on a concrete pedestal that is 450 mm x 400 mm. The loads are PDL = 600KN and PLL = 320 kN. Use A-36 steel and concrete fc'=20 MPa. TH10-3 Shearing Stress and Deflection in Composite Beams 423 1014. A rectangular section 150 mm wide by 250 mm deep resists a bending moment of 140 kN m. The material of the beam is noniso- tropic with the tensile modulus of elasticity twice the compressive modulus. Determine the maximum tensile and compressive stresses in Ans. 0₁ 108 MPa; oc - H 76.5 MPa the section.C250 × 22.8 S5mm SSmm SSmm sSmm 20mm 20mm The strengtn or tne rolled W section shown is increased by welding a channel and 220x40(mm) hollow core steel plate (with 3- 20mm diameter holes) to its upper flange. 1. Determine the location of its centroid; and 20mm Diameter C -W460 × 113 2. Determine the moments of inertia of the composite section with respect to its centroidal x and y axes.
- Determine the design strength of the beam shown. Assume fy-345MPa and fc'-21 MPa.USE NSCP 2010 A simply supported beam is reinforced with 4 – 28 mm ø at the bottomand 2 – 28 mm ø at the top of the beam. Steel covering to centroid ofreinforcement is 70 mm at the top and bottom of the beam. The beamhas a total depth of 400 mm and a widthof 300 mm. fc’ = 30 MPa, fy = 415 MPa. Balanced steel ratio ρb = 0.031.Compute the ultimate moment capacity of the beam in kN-m. Usereduction factor of 0.90USE NSCP 2010 A rectangular beam reinforced for both tension and compression barshas an area of 1450 mm² for compression bars and 4350 mm² fortension bars. The tension bars and compression bars are placed at a distance of 600 mm and 62.5 mm respectively from the top of thebeam. The beam width 300 mm, fc’ = 21 MPa, fy = 415 MPa andtension steel covering is 60 mm.If it is 8 m-simply-supported beam that carries three concentratedservice live loads P applied at three quarter points of the beam (exceptat the supports), neglecting the self weight of the beam, determine themaximum value of service load P in kiloNewtons.
- AW18 x 40 standard steel shape is used to support the loads shown on the beam. Assume P = 19 kips, w = 3.8 kips/ft, LAB = 5.2 ft, LBc = 5.2 ft, and LCD= 14.4 ft. Determine the magnitude of the maximum bending stress in the beam. %3D D B LAB LBC LCD Answer: ksi OmaxDetermining the spacing of a pair of connecting screws (connectors)between the slab and the steel beam working in a composite section. TheShear capacity of these connectors is 500 kg/bolt. Total Load = W=2500 kg/m (Does not include Own Weight of Beam and slab)IPR Profile 16”x74.4 kg/m Ec = 240,000 kg/cm2Ix = 27,430 cm4 Es= 2,100,000 kg/cm2W= 94.8 cm2Fy=2530 kg/cm212mW = 5000kg/m16.5"15cm90cmEX4: A reinforced concrete beam with dimensions as shown in the Fig. below 3D24 Mpa, f,= 414 Mpa. Indicate wither the analysis by the un cracked Transformed section is correct or not.Ø32mm for steel 22kN 58KN/m 144KN 75mim T T65mm 00 h =700mm 4m 355mm