ADDENDUM_FOR_QJKL_07_-_0008.pdf

ADDENDUM FOR

QJKL 07 – 0008 Replace Roof, Building 805

1. Technical Drawing sheet A2 – Caged ladder concrete slab requirement note:

Change to: Place a 36” (W) x 4” (D) x 10’ (L) unreinforced concrete slab.

The new slab must fit between the existing building wall and sidewalk with the felt installed.”

2. As a general note: The current roof insulation is 4.5” thick, with one ¾” thick fire-rated board between the steel deck and insulation, another 3/4 “ fire-rated board between the insulation and the membrane. Since the new high density board is ½” thick maximum, use two layers of 2.5” Poly-isocyanurate board with two layers of ½” thick fire-rated high-density (HD) board. Use high-density fire-rated board that meets UL 790 standard. The high-density board provides good adherence for the membrane when attached with bond adhesive.

3. Add: Apply ½” slope tapered insulation to crickets for positive drainage.

4. Section 07 60 Part 3 Execution: Use aluminum instead of copper for new coping metal.

5. Use 3/8” laminated plywood and attach it to the wall. The plywood will provide good adherence for the membrane flashing covering the exterior wall when applied with bonding adhesive.

1136527572C Typewritten Text

1136527572C Typewritten Text #1