Design Notes

Confirm required return up wall with weather barrier membrane manufacturer to determine step depth; for TPO it is 8″ minimum vertical return).
Concrete curb under curtain wall supported by lower CLT deck.
Structural foam in fill main floor slab. Support as needed depending on where beam lines up with edge of step.

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.

CLT Terrace at Curtain Wall Curb with Pavers

To provide the depth needed for pavers and weather barrier, there needs to be a step in the CLT deck.

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