5 Questions
What is the primary purpose of using temporary casing during the drilling process?
To retain the sides of the borehole until the concrete is placed
What is the minimum load that covers used for open excavations must be capable of supporting?
200 pounds
Why is it important to clearly mark open holes on a construction site?
To alert workers and others of the hazard
What is the purpose of adding additional concrete as the temporary casing is being removed?
To maintain the pressure balance during the casing removal process
What is the primary purpose of covering excavations on a construction site?
To prevent accidents such as falls, trips, or equipment falling into the excavation
Explore the use of surface casing in stabilizing excavation shafts for various purposes such as creating head pressure, hole protection, and forming the initial part of a telescopic casing string. Learn about the methods of drilling or installing surface casing in excavations.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
