pared bed in reasonably close conformity with these specifications and with the lines, grades, and dimensions shown on the plans or established by the Engineer. If shown on the plans, the work shall include the construction of a bed course. Materials 622.02 Materials shall meet the requirements specified in the following sections or subsections: 703 Aggregates for bituminous mixture Materals and proportions for bituminous mixtures will be specified in the special provisions. Rubble for pavement shall consist of approved, sound, durable stone of the sizes indicated on the plans. All stone will be inspected before and after laying, and all rejected material shall be removed immediately from the work. Construction Requirements 622.03 Bed. The bed shall be formed at the required depth below and parallel with the finished surface of the waterway. All soft and yielding or other unsuitable material shall be removed and suitable material substituted. The bed shall be compacted and finished to a smooth, firm surface. If shown on the plans, bed course material shall be placed and compacted to form a bed course of the required thick ness. 622.04 Grouted Rubble. The pavement stones shall be bedded in the foundation with flat faces up and their longest dimensions at right angles to the center line of the waterway. Joints shall be broken and shall not exceed 1 inch in width. The stones shall be rammed until the surface is firm and reasonably true to the finished surface in grade, alinement, and cross section. Any stone having an irregular or uneven surface shall be taken up and satisfactorily relaid. After the stones have been rammed into place and the surface is satisfactory, the spaces or voids between and around the stones shall be filled with filler aggregate to within 4 inches of the surface, after which cement grout shall be poured and broomed into the spaces between the stones, this operation being continued until the grout remains about 1 inch below the tops of the stones. The grout shall be of such consistency that it will flow readily into the spaces between the stones, but it shall not be so wet that the solid matter separates from the water. 622.05 Mortared Rubble. The pavement stones shall be laid with flat faces up and their longest dimension paralled to the gutter line. Joints shall be broken and shall not exceed 1 inch in width. After each stone has been rammed into place and the surface is satisfactory, mortar shall be applied on its exposed side in such quantities that when the adjacent stone is placed and rammed into position the mortar shall fill, to within an inch of the surface, the interstices between the rock, but shall not protrude above their tops. The finished rock surface shall be free from mortar stain. 622.06 Reinforced Concrete and Rubble. Upon the prepared foundation constructed to the lines and grades established by the Engineer, a reinforced concrete foundation shall be as shown on the plans. This foundation shall be constructed progressively with the laying of surface stones in such a manner that stones shall be securely bedded in the concrete before it hardens. The face of stone in contact with the concrete shall be clean and free from any defects that will impair its bond with the concrete. Prior to laying, stones shall be thoroughly wetted, with allowance of ample time for absorption to near saturation. Joints between stones shall be filled with mortar. Adequate means shall be provided for keeping the reinforcement steel bedded within the middle third of the depth of the concrete as construction proceeds. 622.07 Bituminous Mixture: (a) Preparing mixture.-The mixing may be done in either a rotary or pugmill type mixer or by spreading the aggregate on a flat, firm surface, off the area to be surfaced, applying the bituminous material and mixing by road-mix methods. If a pugmill is used, it may be either the batch or continuous type. Except when emulsified asphalt is used, the aggregate shall not contain more than 2 percent of moisture at the time it is mixed with the bituminous materials. However, if the Contractor elects to use an additive approved by the Engineer, the aggregate may contain moisture up to a maximum of 5 percent. Bituminous material shall be applied to the aggregate or introduced into the mixture at the temperature at which the aggregate will be coated uniformly and completely. When mixing is done in a mixer, the mixing period, measured from the time all materials are in the mixer until they are discharged, shall not be less than 40 seconds. When road-mix methods are used, the mixing shall continue until all aggregate particles are uniformly coated with bituminous material. (b) Forms.—If shown on the plans, forms of a type satisfactory to the Engineer shall be staked securely into position at the correct line and elevation. (c) Placing mixture.-The mixture shall be placed on the prepared bed only when the bed is sufficiently dry and weather conditions are suitable. The mixture shall be placed in one or more courses of uniform thickness as shown on the plans. Each course shall be smoothed by raking or screeding and shall be thoroughly compacted by rolling with a handoperate roller weighing not less than 300 pounds or with a small power roller of a type satisfactory to the Engineer. Areas that cannot be reached with rollers may be compacted with hand tampers. After compaction, the surfacing shall be of the nominal thickness and cross-section shown on the plans, shall be smooth and even, and of a dense and uniform texture. 622.08 Concrete Paving. Concrete paving shall be class A, plain or reinforced as shown by the plans, conforming to applicable subsections of sections 601 and 602. 622.09 Finishing Work. For all types of paved waterway, any forms used shall be removed and necessary repairs made to edges of the waterway. The adjacent slopes and shoulders shall be shaped and compacted to the required cross section. Method of Measurement 622.10 The quantities to be paid for will be the number of square yards, surface measurement, of paved waterway of the several kinds, completed and accepted. Basis of Payment 622.11 The quantities, determined as provided above, will be paid for at the contract price per unit of measurement, respectively, for each of the particular pay items listed below that is shown in the bid schedule, which prices and payment will be full compensation for the work prescribed in this section, including excavation and backfill. Payment will be made under: 622 (1) Grouted rubble paved waterway Pay unit Square yard. Section 623.-MONUMENTS, MARKERS, AND GUIDE POSTS Description 623.01 This work shall consist of right-of-way monuments, maintenance marker posts, culvert marker posts, guide posts, and similar monuments or posts furnished and installed in reasonably close conformity with these specifications and with the sizes, dimensions and design at the locations shown on the plans or as directed by the Engineer. Materials 623.02 Materials shown on the plans or in the special provisions shall conform to the requirements specified in the following sections or subsections: Metal, paint, and warning reflectors, if required, shall conform to the requirements shown on the plans or in the special provisions. Construction Requirements 623.03 Fabrication and installation of monuments and posts shall be as shown on the plans or in the special provisions shall include attaching warning reflectors and the painting of posts if required. Each monument and post shall be set accurately at the required location and elevation and in such manner as to insure its being held firmly in place. Method of Measurement 623.04 The quantities to be paid for will be the actual number of monuments and posts of the types shown in the bid schedule, furnished, placed, and accepted. 623.05 Basis of Payment The quantities, determined as provided above, will be paid for at the contract price per unit of measurement, respectively, for each of the particular pay items listed below that is shown in the bid schedule, which prices and payment shall be full compensation for the work prescribed in this section. When more than one design or type is specified for one pay item, identification will be inserted in parentheses immediately after the pay name and letter suffixes will be included within the parentheses of the pay item numbers. Section 624.-TOPSOILING Description 624.01 This work shall consist of topsoil furnished, transported, and spread, or topsoil removed from designated stockpiles, hauled, and spread, in reasonably close conformity with these specifications at the locations shown on the plans or as designated by the Engineer. Materials 624.02 Materials. Materials shall meet the requirements specified in the following subsection of Section 700-Materials. Topsoil 713.01 |