(A) Bituminous concrete sidewalks. These sidewalks shall consist of 2 inches compacted thickness of bituminous concrete on a foundation course of 4 inches compacted thickness. The foundation course shall be at least 2 inches wider on each edge than the finished width of the bituminous concrete.
(B) Excavation. Excavation shall be the same as described under excavation for cement concrete sidewalks except that the width shall be 2 inches wider on each edge making an overall width 4 inches wider.
(C) Foundation. The foundation shall be the same as described under foundation for cement concrete sidewalks except that the width shall be 2 inches wider on each edge making an overall width 4 inches wider.
(D) Forms for bituminous concrete:
(1) Forms shall be of metal or wood; straight, free from warp and of sufficient strength to resist springing from the impact of the roller. If of wood, they shall be of 2 inch surfaced plank except that at sharp curves thinner material may be used; if of metal, they shall be of an approved section. All forms shall be of a depth equal to the depth of the sidewalks and shall be securely staked, braced and held firmly to the required line and grade. All forms shall be cleaned and oiled each time they are used.
(2) Forms may be omitted upon approval of the engineering department in which case the bituminous concrete must be spread to a width slightly greater than required after which a chalk line shall be marked and both edges cut to a straight line giving full required width. Patching edges will not be permitted.
(E) Composition of mix. The mixture of the bituminous concrete shall meet the requirements of the latest revision of Articles 4.06.02 and 4.06.03, Dense Graded Bituminous Concrete Pavement, of the Standard Specifications for Roads, Bridges and Incidental Construction, Connecticut State Highway Department. No mixing will be permitted at the site.
(F) Materials. Bituminous material, namely asphalt cement, coarse aggregate, fine aggregate, mineral filler, shall meet the latest revision of requirements of Article 4.03.02 of the above stated document.
(G) Mineral filler. The mineral filler used in the mix and for dusting shall meet the latest revision of requirements of Article 4.03.02 of the above stated document.
(H) Measuring and mixing bituminous concrete mixture. The measuring or weighing of all materials and mixing shall be done in a commercial plant which has been approved by the state highway department and in accordance with Article 4.03.03 of the above stated document.
(I) Transporting of bituminous concrete mixtures. Such shall be done in accordance with the latest revision of Article 4.03.03-7 of the above stated document, except that maximum haul allowed shall not exceed 20 miles.
(J) Placing of bituminous concrete:
(1) The bituminous concrete may be spread either by machine or by hand.
(2) If a machine is used the machine must be an approved mechanical spreader into which the material is dumped and the machine must be capable of spreading the full width and striking off the material to the appropriate loose depth.
(3) When hand methods are used the mixture upon arrival shall be dumped on approved steel dump sheets outside the area on which it is to be spread and shall then immediately be distributed into place by means of suitable shovels and spread with metal lutes in a uniform layer of appropriate loose depth. Under no circumstances shall rakes be used.
(K) Compacting bituminous concrete:
(1) Compaction may be obtained by machine roller, hand roller or a vibratory compactor.
(2) When a hand roller is used, it shall weigh not less than 500 pounds and the bituminous concrete must be laid in 2 equal courses of one inch compacted depth each course.
(3) When a machine roller is used it shall weigh from 3 to 5 tons. The bituminous concrete may be laid in one course of 2 inch compacted depth.
(4) Vibratory compactors will only be permitted upon approval of the engineering department.
(L) Protecting bituminous concrete work. The contractor shall protect the work during the construction by suitable barricades to protect the public and from damage from any and all causes. Traffic shall be excluded for at least 6 hours or until the work has properly hardened by cooling. Barricades shall not be permitted for more than 48 hours without consent of the engineering department and if not removed upon notice to do so will be removed forthwith at expense of owner or contractor.
(M) Sealing bituminous concrete sidewalks. Where the owner has selected to use bituminous concrete material for sidewalk surface, an approved blacktop sealer shall be applied in 2 coats within one month of the completion of the sidewalk.
('66 Code, § 59-12)