Layout & Coordination · Slope
Lay out required pitch
Square Duct Installation — Drainable/exterior duct
Task typeSlope
Tools / equipmentLaser, calculator, level
How to install it
- 1
Mark high and low points
- 2
calculate drop over run
- 3
set support elevations
- 4
verify fittings continue slope.
Quality check
- No low pockets
- slope continuous
Stop and verify
Stop if slope direction or drain point is unclear