must be left in place until the concrete has hardened thoroughly and the structure is capable of withstanding all loads which may be placed upon it. In no case should these supports be Time to removed in less than 28 days and should remain much longer Remove jf tne weather has been unfavorable for… … UNIVERSAL PORTLAND CEMENT CO. Conditions ring at the crown and springing line, and amount of reinforce-Required Inent required for the guard rail is given in Table 5 whileStability Table 6 gives the dimensions of the wing walls and amount ofmaterials required for the various spans. In Table 6,…
Bridges · Concrete · Culverts
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