ADU

Foundation Notes-

1. Rebar chairs allow bending up towards center, making rebar too close to surface at center of slab. Remedy: support downward facing rebar and leave more space at top.
2. Use twisting tool for tying rebar.
3. Rent bender (weekly rate) and cutter for rebar.
4. Used soil cement to create sharp edges on upper interior trench.
5. Covered 100 % with 15mil underlayment requires UFER to be placed outside of trench or separate driven rods.
6. Make sure anchor bolts are placed properly during pour. They will need to be adjusted as pouring will move them.
7. Problem: When setting anchor bolts for HDU they were set too low. The HDUs requires bolts to be projected about 4.5 inches. Width of sole plate plus another 1.5 inches for HDU mechanism and at least. 5 inches for bolt. Fix: Cut anchor bolt to lower level to allow coupler to attach extra rod to match needed height.

Framing Notes:

1. Make sure walls are plumb before adding sheathing.
2. Cuts at 3.56 degrees for upper walls.
3. Use wall jacks to lift walls.
4. When installing floor and roof diaphragms, cut ends of sheathing for exact match on 2x10s, hold in place temporarily with screws before nailing.
5. Fill floor and roof diaphragms with liquid flash immediately after nailing, this will protect in case of rain.
6. Use 6" heavy rafter screws through header at a 45 for each rafter and 6" timber screws through header straight up into blocking.
7. Make sure upper ends of rafter joists are perfectly aligned before screwing in place. The bottom ends can be cut to match sheathing. Also use only screws until everything has been completely set in place. This allows for easy removal of a joist if needed due to unseen warp or twisting.