Rev. 7-1-95
ROCK BACKFILL
203-R-155
The Standard Specifications are revised as follows:
SECTION 203, AFTER LINE 715, INSERT AS FOLLOWS:
203.20(d) Rock Backfill. Rock backfill shall consist of placement of quarried limestone or dolomite at the locations shown on the plans in accordance with Class E or better requirements as set out in 904.02(b). The maximum size shall be 460 mm (18 in.) Larger sizes will be permitted only if they may be readily loaded with a 0.75 m; (1 cu yd) shovel. The material shall not have more than 10 percent passing a 38 mm (1 1/2 in.) sieve.
SECTION 203, AFTER LINE 1124, INSERT AS FOLLOWS:
Backfill, Rock ......................................................................Megagram (TON)