Where it get the value 2 and 10 for the green circle? Please expl
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Where it get the value 2 and 10 for the green circle? Please expl
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- Design Slab DEGH of the floor system shown below. Dead load pressure including the slab's weight is estimated at 5.3 kPa while live load pressure is 2.4 kPa. Use fc' = 21 MPa and fy = 345 MPa. The supporting beam is 350 mm x 500 mm. Use 12mm diameter bars. 6m A B 6m C 2.6 m D 2.6 m 2.6 m J E H K LL F I LHelp me how to design the REINFORCED CONCRETE BEAMS WITH IRREGULAR CROSS SECTION as shown infigure 1 using the following parameters:F’c = 3,500 Psi Fy=Grade 40 Stirrups = Φ10mmMu = 200 Kn-M All Concrete cover = 30mm Es=200,000 Mpa Find the following: AC area of compression concrete stress block in mm. Assume z = 0.85dEff a height of compression concrete stress block in mm. c distance from the neutral axis to outermost compression fiber in mm. z actual moment arm for Mu=ØTz in mm. As actual area of tension steel in sq.mm. N quantity of Ø20mm steel rebars ЄS Actual Strain of steel ЄY Yield Strain of steel Check if the beam is singly reinforced concrete in the designed then concludeCheck: ЄY < = > ЄS Draw the Working Drawings of the x-section.Fill in the blanks: Determine the required tension steel area of the T beam with given properties below. Width of flange bf= 500 mm Width of web bw = 400mm Thickness of flange tf 140 mm Effective depth d = 380 mm Effective concrete covering d' = 75 mm Compressive strength of concrete fc' = 30 MPa Yield stress of steel bar fy = 300 MPa Mu = 448 kN-m As = mm2 CS Scanned with CamScanner
- C (b/h) 8ød b/2 b/2 The geometry and reinforcement configuration of the column is given below. The material properties are CX/S420. The analysis results due to different loading combinations are as follows (C30,b=400mm,h%3D600mm) Combo 1: Nd%3D1250 kN / Mdx = 250 kN Combo 2: Nd%3D1000 kN / Mdx = 400 kN Combo 2: Nd%3D750 kN / Mdx = 550 kN Determine the longitudinal reinforcement of the column.Details of a rectangular column are as follows: Column width along X-axis-250 mm Column Depth along the Y-axis-600 mm 8-25 mm diameter bars distributed equally along the longer sides. 10 mm diameter ties spaced at 10 mm on centers Concrete 28th day Compressive strength, fc;=20.7 MPa Reinforcing Steel yield strength, fy-415 MPa Assume that compression steel yields. a) Which of the following gives the nominal balanced load Pb (kN). A = 90.4 mm b) Which of the following gives the nominal axial load (kN) that the column n carry at an eccentricity of 200 mm along the X axis from the centroidal Y-axis.A beam has a width of 300 mm and an effective depth of 480 mm strength Pc= 34 MPa. Steel yield strength fy=415 MPa. The section is to be reinforced for tension only and the effective concrete cover is 70 mm. Deadload moment is 140 kN-m and the liveload moment is 180 kN-m. Use 2010 NSCP with t= 0.005. A. What is the governing steel ratio? B. What is the maximum number of bars needed for a 25mm diameter reinforcements? C. What is the minimum number of bars needed for a 25mm diameter reinforcements?
- A W1422 acts compositely with a 4-inch-thick floor slab whose effective width b is 90 inches. The beams are spaced at 7 feet 6 inches, and the span length is 30 feet. The superimposed loads are as follows: construction load = 20 psf, partition load = 10 psf, weight of ceiling and light fixtures = 5 psf, and live load = 60 psf, A992 steel is used, and fc=4 ksi. Determine whether the flexural strength is adequate. a. Use LRFD. b. Use ASD.Exercises 1- A rectangular beam reinforced with 4 o18 bars has h=650mm, bw=250mm and d'=30mm. Applied moment is 67 kN.mMaterials used are C25 and S220. Allowable compressive stress and modulus of rupture for concrete are 10MPA and 2.3 N/mm2 respectively. Allowable stress for steel is 140 MPa. Is this beam cracked or uncracked? Is this beam designed adequately to carry the applied moment safely? 2- Does this beam have enough capacity to carry the applied moment? Also, calculate the position of neutral axis. h=50cm, bw= 25 cm, and d'=3cm. C25 and S420 are used. (kı= 0.85; fod= 17 MPa; fya=365 MPa; E= 2X10°N/mm?) DL= 30 kN/m LL= 15 kN/m 4Ф 22 5.3 m 3- Calculate the moment carrying capacity of the beam shown? Choose the required steel reinforcement to carry this moment. d=470mm b= 270mm and d'=30mm. C20: Allowable stress=7MPA S420: Allowable stress=220 MPa A, n=15Problem 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. TH
- 9.4- A concrete slab with 180 mm thickness support dead load 5kN/m² include self- weight and service live load 4kN/m2, find: 1- Adequacy of slab thickness. 2- Steel area required at point 1, 2, 3&4. 3- Total load on beam AB and DC. Use Ø12 mm, f = 28MPA and fy = 400MPA 5 20 m- 5.20 m- -5.00 m- -5.20 m- opening 6.00 m B 2 6.00 m D 2.00 mDesign economical spacing of 10 mm diameter stirrups for the beam which carries the loads shown. Design shear reinforcement of prestressed beam with the following properties listed. Properties: f^c=28 MPa fy = 276MPa Aps = 800 mm² Ds = 10mm Dm = 18mm fse = 800 MPa fpu = 1500 MPa fpe = 860 MPa Pe = 250kNQ₁:Design a concrete column shown in figure using fe-28 MPa, fy- 420 MPa, ultimate applied load. P=545 KN B E 1500 P=350 KN b Section (a-a)