Massachusetts 2b Hoisting License Study Guide Graded A+

What does the color red mean on a dig safe marking?Using my own machine ... [Show More]

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Trench walls that have water seeping from them tend to be: {Ans: Weaker than a dry trench wall}What is the MA law that covers hoisting? {Ans: 520 CMR 6.00}The greatest area of stress in a trench is at the: {Ans: Bottom of the trench}Major types of soil are: {Ans: Clay and sand}The Digsafe color code pink is for "________". {Ans: Survey marks}I should dig into a bank at a 45 degree angle {Ans: True}