The procedure for backfill and pavement restoration shall be as follows. Density test of compacted fill, backfill and/or base shall be taken at each six-inch lift, prior to placement of the succeeding lift of material according to the following schedule.
(A) For any road crossing in which the road is cut and restored one lane at a time, one density test shall be taken in each lane at each six-inch lift.
(B) For any road crossing in which the road is cut and restored two lanes at a time, densities shall be tested in one lane per lift, alternating lanes with each lift.
(C) For any road crossing in which the road is cut and restored three lanes at a time, densities shall be tested in two locations per six-inch lift, staggering locations with each successive lift.
(D) Cuts across roads shall not be left open overnight unless absolutely necessary. Trenches shall be backfilled and a temporary asphalt applied to make a smooth level patch. The trenches shall then be excavated the next day and permanent backfill and pavement installed in accordance with these standards. The only exception will be when the installed facility must be tested before the road is restored. In these cases, the permanent restoration must be performed on the day of testing or the next day.
(E) When the installation parallels the roadway and damages the pavement, the density tests shall be made every 100 l.f. at six-inch layers, with test locations staggered 25 inches each lift. A copy of all Proctor and Field Density Tests shall be furnished to the Engineering Department.
(F) Roadway base material shall be compacted to a minimum of 98% of maximum dry density, as determined by AASHTO T-180 (Modified Proctor Test). Subgrade material under paved areas shall by compacted to a minimum of 100% of maximum dry density. Shoulder area and swale area beyond shoulders shall be compacted to a minimum of 98% of maximum dry density, as determined by AASHTO T-99-C (Standard Proctor Test).
(G) Restoration of striping, signing and signalization devices shall be accomplished immediately after pavement restoration is completed.
(Ord. 972, passed 11-6-91; Am. Ord. 2021-02, adopted 3-17-21; sought to be reconsidered, Commission passed 4-21-2021)