Design of Roadside Barrier Systems Placed on MSE Retaining Walls (2010) / Chapter Skim
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Pages 178-184
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From page 178... ...
Design guideline for 10 ft high MSE wall with 10 ft long strips design 1. Guidelines for the barrier 1.1.
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From page 179... ...
179 1.2. Overturning M L s h B 88.88 kips-ft > 35.83 kips-ft OK l O = 17.86 in.
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From page 180... ...
180 db = 0.75 in., Ab = 0.44 in2, d = 11.18 in.
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From page 181... ...
181 2) Second layer of reinforcement R = t A s = t × b × Ec = 60 ksi × 50 mm × 1.984 mm = 9.226 kips for 100 year corrosion p s A t = 1.205 kips (See Appendix A, Example 3)
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From page 182... ...
182 = 0.22 in2 × 60 ksi × 2.75 in × (1-0.21/3) = 33803.62 lbs-in/ft = 2.82 kips-ft/ft = As/Ac = 0.333% n = Es/Ec = 8.04 n = 0.027 = cr = fr/Es = 0.00207 strain cr = cr/(d- d)
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From page 183... ...
183 3.1.2 Find Mi P2=230 psf l2=2.5 ft l3=1.2 ft P1=1200 psf l1=0.54 ft -648 1200.6 -299.98 -586.88 276 F1=1848.62 lb F2=862.88 lb -174.96 425.66388.31 -165.6 BA Mi has been selected maximum positive moment. Shear Force (kips)
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From page 184... ...
184 M i = 1 × 0.43 kips-ft/ft = 0.43 kip-ft/ft M u M i 2.56 kip-ft/ft > 0.43 kip-ft/ft OK 3.2. Check Shear Stability V ul t V im pact V ult = b w d = 0.9 × 2 × 63.25 × 12 × 2.75 = 3756.79 lbs = 3.76 kips 1/2 V ult = 1.88 kips > V im pact = 1.2 kip OK ′fc
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