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- Subject
- Estimating and Costingcivil-engineering-mcqs › estimating-and-costing
- Published
- 20 Jan 2019
- Last updated
- 28 May 2026
Explanation
The standard detention time used for septic tank design is typically 30 minutes, allowing sufficient settling of solids.
More Estimating and Costing MCQs
Practice related questions from the same subject.
- 1.Which of the following statements is accurate?
- 2.Which of the following statements about a gully trap is accurate?
- 3.Which of the following statements is true regarding pipes and fittings?
- 4.Given S equals 1, what is the formula for the length?
- 5.A proposed railway embankment is 150 meters long with a ground surface sloping at a ratio of 1 in 50. The embankment's height at the starting point (zero chainage) is 0.5 meters, its width is 11 meters, and the side slopes are 2:1. If the embankment has a falling gradient of 1 in 150, what is the volume of earthwork calculated using the Prismoidal formula?
- 6.Which of the following components have their weights included in the total weight of the corresponding item?
- 7.What is the typical daily output of brickwork using cement mortar in foundation and plinth by one mason?
- 8.What is the recommended height range for installing a wash basin sink above the floor level?
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