Layout & Coordination · Shaft opening
Lay out floor penetration
Square Duct Installation — Riser duct
Task typeShaft opening
Tools / equipmentLaser, tape, penetration detail
How to install it
- 1
Use grid control
- 2
verify opening size includes sleeve/clearance/firestop
- 3
check floors above and below.
Quality check
- Openings stack
- rated detail accommodated
Stop and verify
Stop before cutting if structure or rating is uncertain