What is the minimum separation for ducts crossing utilities when crossing through concrete?

Study for the BICSI OSP Design Test. Prepare using multiple choice questions, with hints and explanations to enhance understanding. Succeed in your exam journey!

Multiple Choice

What is the minimum separation for ducts crossing utilities when crossing through concrete?

Explanation:
Maintaining a clearance between ducts and utilities when they cross through concrete is about preventing contact and allowing space for protection and future access. A separation of three inches provides enough room to install sleeves or spacers and to accommodate minor movements or settling without the ducts rubbing against utilities or each other. Too little clearance increases the risk of abrasion or damage during concrete pour and over time, while much larger gaps are generally unnecessary and wasteful.

Maintaining a clearance between ducts and utilities when they cross through concrete is about preventing contact and allowing space for protection and future access. A separation of three inches provides enough room to install sleeves or spacers and to accommodate minor movements or settling without the ducts rubbing against utilities or each other. Too little clearance increases the risk of abrasion or damage during concrete pour and over time, while much larger gaps are generally unnecessary and wasteful.

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