SB9 and ADU Construction Notes

Working Notes:

Use clear polycarb sheets on interior of glass bricks to create 3.5" air gap or about R-value 3.6 per inch plus 2 for glass brick or about r-14. Assuming a loss of efficiency that still puts us well under .3U (aprox .07 U)

Create a dutch door type of in combo with a custom window for upstairs egress/large furniture entry (28x80). Custom upper window constructed with 2x4 notched toward front and back to create 3" airgap. 3 sides secured permanently fourth side screwed in place to allow removal and insertion of glass .Aprox R 12 or (U .085)

Blocking joists and rafters at ends: Idea- Starting with center joist/rafter use precut blocks at 14.5" nailing or screwing (3.5") them in as joist rafters are added. Staggering single blocking so both ends and bottom (with 6m" screws) can be attached. If double blocking is required a second one can be added with face nailing.

More Blocking Base of framing: Best technique-use 3.5" exterior screws through stud from sides in combination with same, angled at 45 from top. Block with 2x or doubled 15 plywood (behind HDUs). From outside attach with 1.5" at sheathing edges.