A symmetrical cross-section of a reinforced concrete shown has a value of f'c = 27.63 MPa and fy = 414 MPa. Calculate the nominal capacity based on the maximum steel area for a tension-controlled condition. Use the following dimensions: b = 475 mm d = 685 mm t = 138 mm web thickness = 138 mm b I d
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- USE NSCP 2015 as reference: D. Minimum/maximum value of concrete strain(ec), (from nscp2015) E.Values of concrete and steel Modulus of Elasticity (E). F. Two values of minimum steel area (Asmin).calculate the corresponding depth uniform stress block in a reinforce concrete beam 42*10 deep reinforce with bars 20-mm in a diameter enclosed with 10-mm dia stirrups when the tensile steel strain is 0.008 and concrete compression strain 0.003. f'c = 22 Mpa. Express your anser in 2 decimal places only in mm.The modulus of elasticity of concrete (Force/Area) is 13 GN/m2. Determine its US Customary units (kip/in2).
- 2. According to Section 10.2.3 of AC, the maximum usable strain at extreme concrete compression fiber shall be assumed equal to a. 0.004 b. 0.005 c. 0.003 d. 0.002 e. 0.001 f. 0.008Situation 1: A concrete overhang beam with the section shown is to support a 150 mm thick concrete slab with a tributary width of 2.70 m. The beam also supports a 3.20 m height of 100 mm thick concrete partition wall. Unit weight of concrete is taken to be 24 kN/m. Determine the maximum fiber stresses (tensile & compressive) due to the imposed dead loads. Draw the complete V&M diagrams. Note: Show your Solution in a Step by stepFrom National Structural Code of the Philippines 2015, what is the: 1. Minimum/maximum value of steel strain(εt) 2. Minimum/maximum value of steel stress (fs) 3. Maximum/minimum values of concrete stress (fc’)
- A BEAM SECTION IS SHOWN IN THE FIGURE BELOW IS A SIMPLY SUPPORTED OVER A SPAN OF 8M. THE BEAM IS REINFORCED WITH STRAIGHT TENDONS. ASSUMING TENSION CONCRETE DOES NOT CRACK, WHAT IS THE DEFLECTION AT MIDSPAN (NET DEFLECTION) DUE TO GIVEN LOADS WITH BEAM SECTION PROPERTIES LISTED BELLOW. (Note: include the sign if negative) (mm) BEAM PROPERTIES: F'C = 28 MPA PRESTRESSING FORCE = 350 KN UNIT WEIGHT OF CONCRETE = 23.6 KN/CU.M Please avoid rounding off values during the course of solution proper as much as possible. Always write your answer in 3 decimal placesA rectangular concrete beam has a width of 400 mm and an effective depth of 700 mm. It is reinforced with five 28-mm diameter bars for tension only. Concrete strength is f's = 21 MPa and steel yield strength is fy = 275 MPa. Which of the following most nearly gives the distance of the neutral axis from the extreme compression concrete? A. 139.51 mm B. 151.93 mm C. 118.58 mm D. 188.15 mmEstimate the modulus of elasticity and the shear modulus of a concrete specimen with a dry density of 150 pcf (2400 kg/m3) and compressive strength of 4500 psi (31MPa) using Poisson’s ratio, ? =0.18.
- Estimate the modulus of elasticity for concrete with a density of 120 lb/ft3 and a 28-day maximum compressive strength of 3500 psi.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.Based on the structural analysis performed in a simply-supported reinforced concrete beam, it yields the following values of un-factored (service) loads. Floor Dead Load = 80 kN, Floor Live Load = 10 kN/m, Wind Load = 60 kN, and Earthquake Load = 50 kN. The 10m beam has a dimension of 500 mm x 500 mm and the unit weight of concrete used is 24 kN/m^3. Use the provisions stated in NSCP 2015. Question: Determine the critical factored moment in kN-m. Answer: 530 kN-m Please provide complete solution, thank you!