Residential · IRC 2021 §R302.2.1 / §R302.2.2
Townhouse Common Wall Separation
Townhouse plan: one common wall rated 1 hr with sprinklers or 2 hr without, extended to the roof sheathing with no plumbing or ducts, versus two 1 hr walls.. Referenced to IRC 2021 §R302.2.1 / §R302.2.2.
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