Design Notes

Cast iron locking dome with non-puncture clamp ring recommended.
Through bolt would be an alternative but bolts would be exposed at underside of deck.

Acoustics:

3-ply CLT = IIC 22 & STC 38 5-ply CLT = IIC 25 & STC 41 (Rigid board and roofing membrane not included).

Fire:

Non-rated 3-ply CLT 1 1/2-hr rating possible: 5-ply CLT Design No. L901 Would require adding a topping under the rigid insulation.

Roof Drain and Overflow at CLT Roof Deck

Primary and overflow drains with sloped insulation and lag screw attachment located in CLT deck.

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