Reinforced-Concrete-Shear-Wall-Analysis-Design-ACI318-14.pdf

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Reinforced-Concrete-Shear-Wall-Analysis-Design-ACI318-14.pdf
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    Reinforced Concrete Shear Wall Analysis and Design   Version: Mar-23-2018 Reinforced Concrete Shear Wall Analysis and Design A structural reinforced concrete shear wall in a 5-story building provides lateral and gravity load resistance for the applied load as shown in the figure below. Shear wall section and assumed reinforcement is investigated after analysis to verify suitability for the applied loads. Figure 1  –   Reinforced Concrete Shear Wall Geometry and Loading   Version: Mar-23-2018 Contents 1.   Minimum Reinforcement Requirements (Reinforcement Percentage and Spacing) ................................................ 2   1.1.   Horizontal Reinforcement Check ...................................................................................................................... 2   1.2.   Vertical Reinforcement Check .......................................................................................................................... 2   2.    Neutral Axis Depth Determination ........................................................................................................................... 3   3.   Moment Capacity Check .......................................................................................................................................... 4   4.   Shear Capacity Check .............................................................................................................................................. 5   5.   Shear Wall Analysis and Design  –   spWall Software ............................................................................................... 7   6.   Design Results Comparison and Conclusions ........................................................................................................ 16   7.   Appendix  –   Commentary on Reinforcement Arrangement Impact on Wall Capacity ........................................... 17     1 Code Building Code Requirements for Structural Concrete (ACI 318-14) and Commentary (ACI 318R-14)  Reference Reinforced Concrete Mechanics and Design, 7 th  Edition, 2016, James Wight, Pearson, Example 18-2 Design Data  f  c ’   = 4,000 psi normal weight concrete  f   y  = 60,000 psi Slab thickness = 7 in. Wall thickness = 10 in. Wall length = 18 ft Vertical reinforcement: #5 bars at 18 in. on centers in each face (A s, vertical = #5 @ 18 in.) Horizontal reinforcement: #4 bars at 16 in. on centers in each face (A s, horizontal = #4 @ 16 in.)   2 1.   Minimum Reinforcement Requirements (Reinforcement Percentage and Spacing) 1.1.   Horizontal Reinforcement Check ,2 2 0.20.002510 16 v horizontalt   Ah s           ACI 318-14 (2.2) ,min 0.0025 0.0025 (o.k) t t            ACI 318-14 (11.6.2(b))   ,max 3 310 30in.smallest of18in.smallest of18in.smallest of18in.18in./518/543.2in. t w hsl                                  ACI 318-14 (11.7.3.1) , ,max 16in. 18in. (o.k) t provided t  s s     1.2.   Vertical Reinforcement Check ,1 2 0.310.0034410 18 v verticall  Ah s           ACI 318-14 (2.2)   ,min 0.00250.52.50.0025greater of 0.0025 wt l w hl                     ACI 318-14 (11.6.2(a))     ,min 0.00250.52.50.00250.00250.0025greater of greater of 0.00250.00250.0025 wl w hl                        ,min 0.00344 0.0025 (o.k) l l           ACI 318-14 (11.6.2(a))   ,max 3 310 30in.smallest of18in.smallest of18in.smallest of18in.18in./318/372in. lw hsl                                  ACI 318-14 (11.7.2.1)   , ,max 18in. 18in. (o.k) l provided l s s     
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