1. Aci Required Concrete Strength

CodeBuilding Code Requirements for Structural Concrete(ACI 318-14) and Commentary (ACI 318R-14)ReferenceReinforcedConcrete Mechanics and Design, 7 th Edition, 2016, James Wight,Pearson, Example 18-2Design Dataf c’ = 4,000 psi normal weight concretef y = 60,000 psiSlabthickness = 7 in.Wall thickness = 10 in.Wall length = 18 ftVertical reinforcement: #5 bars at 18in. On centers in each face ( A s,vertical = #5 @ 18 in.)Horizontal reinforcement: #4 bars at 16in. On centers in each face ( A s,horizontal = #4 @ 16 in.)ACI 318-14 (2.2)ACI 318-14 (11.6.2(b))ACI 318-14 (11.7.3.1)ACI 318-14 (2.2)ACI 318-14 (11.6.2(a))ACI 318-14 (11.6.2(a))ACI 318-14 (11.7.2.1)The load factor for strength-level wind force = 1.0ACI 318-14 (Eq.5.3.1f)ACI 318-14 (Table 22.2.2.4.3)Assume the effective flexural depth ( d) isapproximately equal to 0.8 l w= 173 in. ACI 318-14 (11.5.4.2)ACI318-14 (Table 21.2.2)Taking into account the applied axial force and summingforce moments about the compression force (C), the moment capacity can becomputed as follows:Since ϕM n isgreater than M u, the wall has adequate flexural strength.To further confirm the moment capacityis adequate with detailed consideration for the axial compression, aninteraction diagram using can be created easily as shownbelow for the wall section. The location of the neutral axis, maximum tensilestrain, and the phi factor can all be also verified from themodel results output parameters. Table 1 – Comparison of Shear Wall Analysis andDesign ResultsSolutionWall Cross-Sectional ForcesStrengthRequired A sProvided A sM u(kip-ft)N u(kips)V u(kips)M u@critical Section(kip-ft)ϕV c(kips)A s,vertical(in. 2)A s,vertical(in.

2)Hand4,580161Governedby Min.7.44Reference4,580161Governedby Min.7.44spWall4,576164Governedby Min.7.56The results of all the handcalculations and the reference used illustrated above are in precise agreementwith the automated exact results obtained from the program. It is worth noting that theminimum area of steel is governed by the minimum reinforcement ratio stipulatedby the code.

A Study on the Safety of Shear design of Reinforced Concrete Beams - Volume 20 Issue 4 - W.

The same can be seen inoutput for elements 9 through 18.In the hand calculations and the reference, a simplifiedprocedure to calculate the nominal flexural strength was used (A. Cardenaset al.). In this procedure, several broad assumptions are made to avoid tediousdetailed calculations: All steel in thetension zone yields in tension.

Aci Required Concrete Strength

H&h tools nail gun. All steel in thecompression zone yields in compression. The tension forceacts at mid-depth of the tension zone.