PSI Alabama Water Projects ContractorPSI Alabama Water Projects Contractor Book Package Books, Pre Printed Tabs, and Online Course Options Available Trade Exam Outline Number of Questions: 50 Required to Pass: 70% Time Allowed: 120 min Required Reference Books Code of Federal Regulations 29 CFR Part 1926 (OSHA) Pipe and Excavation Contracting, Dave Roberts, 2011 Design and Control of Concrete Mixtures, 16th Ed. Guide to Shotcrete American Concrete Institute Placing Reinforcing Bars,
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