TCEQ Wastewater (Class D) License Prep questions with
correct answers
/. Minimum velocity required to keep solids in suspension? - Answer-✅2ft/sec
/.Minimum required velocity a inverted siphon requires? - Answer-✅3ft/sec
/.Two most common pipe materials used in the collection system? - Answer-✅Clay &
PVC
/.OSHA minimum standards for shoring, sloping, or trench boxes are? - Answer-✅5ft or
deeper
/.If the trench is _____ or deeper, use a portable ladder or other means of exit. -
Answer-✅4ft or deeper
/.The ladder most extend ____ feet above the trench and be secured. - Answer-✅3ft
/.Ladders must be within ____ feet of trench workers and not more than ____ feet apart.
- Answer-✅25ft, 50ft
/.The excavation spoil must be at least? - Answer-✅2ft from the edge of the trench
/.Which type of pump is most often used in a lift station? - Answer-✅Centrifugal Pump
correct answers
/. Minimum velocity required to keep solids in suspension? - Answer-✅2ft/sec
/.Minimum required velocity a inverted siphon requires? - Answer-✅3ft/sec
/.Two most common pipe materials used in the collection system? - Answer-✅Clay &
PVC
/.OSHA minimum standards for shoring, sloping, or trench boxes are? - Answer-✅5ft or
deeper
/.If the trench is _____ or deeper, use a portable ladder or other means of exit. -
Answer-✅4ft or deeper
/.The ladder most extend ____ feet above the trench and be secured. - Answer-✅3ft
/.Ladders must be within ____ feet of trench workers and not more than ____ feet apart.
- Answer-✅25ft, 50ft
/.The excavation spoil must be at least? - Answer-✅2ft from the edge of the trench
/.Which type of pump is most often used in a lift station? - Answer-✅Centrifugal Pump
