50mm or less holes in any location outside exclusion zones minimum of 300mm from supports 100mm from any other hole
Consider clusters of holes as a single larger hole
1. Tables shown are for Residential Live Load (1.5
+ 110kg/m2 Dead Load
2. There is no maximum number of holes that can be cut into the joists provided they meet the above requirements
3. Contact ITI for further design assistance is required 4. Cut holes carefully. Do not over cut holes 5. Do not cut the flanges of the I-Joists
Holes may be located within the full depth of the web provided there is a minimum of a 5mm gap from the bottom of the hole to the flange
No holes are to be cut into a cantilever