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Find reactions, Draw S.F.D, and Draw B.M.D.
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- Help 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.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 m"Q1.19-.A rectangular beam has dimensions of 270 mm by 640 mm with an effective depth of 571 mm and is reinforced with 4- 28 mm ø. Concrete cover is 69 mm. The concrete cylinder strength f’c = 28.8 MPa and the tensile strength in bending is the modulus of rupture. The yield point of the steel is 416.3 MPa. The beam carries a bending moment of 57 kN-m. Use transformed section method to answer the following: (1) Compute the concrete compression stress at the top, (2) Compute the concrete tension stress at the bottom, (3) Compute the stress in the steel. (4) Assess the adequacy of the beam design."
- Subject: Reinforced concrete Design- Civil Engineering A rectangular beam has a width of 300mm and an effective depth pf 537.50mm to the centroid of tension steel bars. Tension reinforcements consists of 6-28mm bars in two rows, compression reinforcement consists of 2-22mm bars, fc' = 27.6MPa, fy = 414.7MPa, d'=60mm. The depth of compression block is _mm. Choices: A. 137mm B. 213mm C. 173mm D. 231mm0211 A reinforced concrete one way slab is built integrally with support, consist of two equal spans as shown in Figure. Design the slab to carry service live load 4.8kN/m² and service dead load of 5.75 kN/m². Assume: fe 28 MPa and fy = 420 MPa and y=24kN/m². 1-Estimate the slab thickness using limitations of ACI-318M 2- Use the ACI-318M moment coefficients to determine the design moments at critical sections of the slab. 3-. Design the first panel at exterior sport only. 4-Find the load transfer to supporting interior beam. M 6m Fig.2 0.3m+ -4.5m- 11 11 -0.3m -4.5m- +0.3mA simply supported one way reinforced concrete floor slab has a span of 3 m. It carries a service live load of 8.5 kPa and a service dead load of 1.5 kPa, compressive strength of concrete is 20.7 MPa while the yield strength of reinforcement bars is 414.16 MPa. Use 25 clear cover. Unit weight of reinforced concrete is 24 kN/m3. Determine the minimum required thickness of the slab. Select one: a. 175 mm b. 125 mm c. 150 mm d. 100 mm
- A flat slab is supported by 18"x18" columns spaced at 26 ft in both directions. The slab is 10" and has a concrete strength, F'c = 5000 psi and reinforcement having a yield strength Fy = 60,000 psi. The slab is subjected to a factored load qu = 260 psf (including self weight of the slab). Determine the following: a) The width of the column strip and middle strip b) The design moment for the column strip at the typical interior bay at the column and at midspan c) Check punching at a typical interior column. The total moment transferred to the column is 50 k- ft.Q2// A floor system consists ofconcrete slab supported by continuous beam h = 140mm , bw = 300mm,d = 550mm, f 28MPA, fy = with: %3D 420MPа. Determine the steel reinforcement required at mid span of interior beam to resist service dead load moment Ma = 320KN.m and service live load moment M = 250 kN.m %3! %3D 8m + 3m 4 3m 3m 1-1The shear strength Vc of a normal weight beam cross section, given concrete strength fc, width of beam b and effective depth d is: a. 2/6 Vif^* c) b d b. 0.17 febd c. ½fcbd d. 0.17 Vife)bd
- ス F. reinforced concete structure is shown The floor framing plan oF in the figure. The beams are 280 mm wide and S20 mm deep, and the slob is 110mm thick an edditional (super impes) veight,1 and live lo ad of OTher than conerete weight, the floor subjected other to Is dead load of 3k Pa si2 k Por. Unit weight of concrete is 23.5 kN/m® le Determine the total uniform load on beam DEF and ABC axial load 20 Determme the total on columns A and B,D an) E 2Sm 티 2.Sm 6.2m 6.2mDesign a one-way slab for inside of a RC Building. NWC. Use slab thickness = 6/1/2" Additional WDL = 40 psf is applied to the self-weight WLL = 10.0 psf. t₂ = 3000 psi fin 15ft 7 Grade 60 steel. Rebars.Design a simply supported one-way reinforced concrete floor slab to span 10 ft and carry a service live load of 175 psf and a service dead load of 25 psf. Use fc' = 3000 psi and fy = 60,000 psi. Make the slab thickness to 12-in. increments. a. Design the slab for the ACI Code minimum thickness. b. Design the thinnest possible slab allowed by the ACI Code.