All specifications for paving, repaving and resurfacing streets
prepared by the Commissioner of Public Works and kept on file in his
office, as required by Section 667 of the Charter, shall be drawn
so as to encourage and promote the maximum opportunity for competitive
bids among contractors engaged in such work. The specifications, among
other things, shall include provisions:
A. For all projects requiring asphalt tonnage up to and including 5,000
tons, the bidder shall be required to furnish acceptable proof that
he will be able to supply and lay at least 150 tons of paving material
(binder or top) per day. For all projects requiring asphalt bonnage
in excess of 5,000 tons, the bidder shall be required to furnish acceptable
proof that he will be able to supply and lay at least 300 tons of
paving material (binder or top) per day.
B. That specifications for paving or repaving streets provide for:
(1) Eight-inch concrete base with 1 1/2 inches of asphaltic concrete
binder applied over such base and 1 1/2 inches of sheet asphalt
spread over the binder as a wearing surface;
(2) Seven-inch asphaltic concrete base with two inches of asphaltic concrete
binder applied over such base and 1 1/2 inches of sheet asphalt
spread over the binder as a wearing surface; or
(3) Nine-inch reinforced concrete pavement.
C. That resurfacing specifications provide for one and one-half-inch
asphaltic concrete binder and 1 1/2 inches of sheet asphalt spread
over the binder as a wearing surface and that, as an alternate, the
specifications provide for one inch of sheet asphalt spread over the
binder as a wearing surface.
D. That specifications for paving, repaving or resurfacing provide for
Medina sandstone or granite curbing and as a second alternate the
specifications provide for concrete curbing unless the Commissioner
of Public Works certifies that the use of concrete curbing on any
particular street is not suitable.