Materials 209.02 Sheathing material may be either gravel, slag, crushed stone or sånd meeting the requirements of subsection 703.17. Construction Requirements 209.03 When used against a mortar protection course of membrane waterproofing, sheathing shall not be placed until the mortar has aged for at least 3 days. The inlet ends of all weep holes and drains shall be covered first with large selected stones over which there shall be placed finer material in such manner as to provide free access for the drainage but prevent the leaching out of the filling material. The sheathing shall form a continuous covering over the entire designated surface, extending from the elevation of the bottom of weep holes and drains to the top of the wall. It shall be so placed that mingling with the fill will be prevented. Planks or other suitable separators that can be withdrawn as the work progresses shall be kept between the sheathing and the fill when working against vertical faces or slopes steeper than the angle of repose of the material. When waterproofing is protected by roofing felt, a 4-inch (102 mm) layer of sand shall be placed between the coarse graded sheathing and the felt. Unless specific thicknesses are shown or ordered, the layer of sheathing shall have a nominal total thickness of 1 foot (305 mm). Method of Measurement 209.04 The quantity to be paid for will be the number of cubic yards of sheathing material together with sand when included, measured in final position, between the limits shown on the plans or directed by the Engineer, complete in place and accepted. Basis of Payment 209.05 Payment will be made for the quantity measured as provided above, for the pay item below, which price and payment will be full compensation for the work of this section. Payment will be made under: Pay item 209(1) Sheathing material Pay unit _cubic yard. Section 210.-OBLITERATION OF OLD ROAD WAYS Description 210.01 General. This work shall consist of the obliteration, in reasonably close conformity with these specifications, of such old road ways as are shown on the plans or designated by the Engineer for obliteration. Construction Requirements 210.02 After designated sections of the old roadway are no longer needed for traffic, the ditches shall be filled and the roadway rough graded, to restore approximately the original contour of the ground or to produce a pleasing appearance by forming natural, rounded slopes. After the rough grading is completed, the area of the old roadbed shall be scarified or plowed to mix the remaining road metal thoroughly with earth and then shall be harrowed and smoothed. Old structures shall be broken down and buried or removed. Where shown on the plans or directed by the Engineer, all material with salvage value shall be carefully removed to avoid damage. Any materials salvaged from the old roadway and meeting specifications for any items of the new roadway may be used in the construction thereof as provided in subsection 104.05. Where shown on the plans or directed by the Engineer, materials required for the new roadway shall be taken from the old roadway, and suitable material taken from the new roadway shall be used in obliterating the old roadway. There will be no separate payments for excavating, backfilling or compacting any remaining cavities. Method of Measurement 210.03 The area to be paid for will be the number of units of old roadway acceptably obliterated or the square yards of old roadbed acceptably scarified, whichever is called for in the bid schedule. A unit will consist of an area of 1,000 square feet (92.9 m2) measured horizontally. Only those units and fractions thereof which are outside the limits of the new roadway will be measured. Areas of less than 200 square feet (18.6 m2) will not be measured. Basis of Payment 210.04 The quantity determined as provided above will be paid for at the contract price per unit of measurement for the particular pay item listed below that is shown in the bid schedule, which price and payment will be full compensation for the work prescribed in this section, except that materials obtained from the old roadway and used in construction of the new roadway and materials obtained from the new roadway and used in obliteration of the old roadway will be paid for under Sections 203, 624, or other applicable sections. 211.01 This work shall consist of cleaning up roadside areas in reasonably close conformity with these specifications. The areas to be cleaned up shall be those areas so denoted on the plans and/or designated by the Engineer which are located beyond the clearing and grubbing limits designated in Section 201. Cleanup shall consist of clearing the designated ground of down timber, dead brush, logs, and debris, the felling and destroying of snags and dangerous trees as ordered by the Engineer within the designated area being cleaned up, and the burning or otherwise disposing of the spoil as ordered by the Engineer. Cleanup shall also include the removal from cultivated or cropped areas of all dead plants and plant refuse and shall include living crop plants when so ordered by the Engineer. Construction Requirements 211.02 The neatness of cleaning up shall be relative, so as to be in character with the surroundings. Hand raking or any similar exaggerated degree of treatment will not be required. Intensity of cleanup shall be gradually diminished from the road prism construction outward to the cleanup limits or boundary designated by the Engineer, so as to effect a natural transition in treatment, and so as to avoid sharp demarcation between the artificial and the natural. As a general guide, the first 20-foot (6.1 m) width nearest the roadway shall have practically all small sticks and other loose particles removed, except those of approximately 1 inch or less in thickness diameter. The second 20-foot (6.1 m) width shall be cleaned of subst tially all sticks and loose particles exceeding approximately 2 inches mm) in thickness or diameter, and the third 20-foot (6.1 m) width sl be cleared of substantially all sticks and loose particles exceed approximately 3 inches (76 mm) in thickness or diameter. Trees and snags designated for removal shall be cut flush with ground. Stumps within the areas designated for cleanup shall also cut flush with the ground. Refuse from cleanup operations shall be disposed of as provid under Section 201. Method of Measurement 211.03 The area to be paid for will be the number of acres a fractions thereof or thousand square feet units and fractions thereof, land acceptably cleaned up as staked or designated by the Engineer a in accordance with these specifications. Acreage will be computed fro dimensions measured horizontally. Basis of Payment 211.04 The quantity determined as provided above will be paid fo at the contract unit price per unit of measurement for the pay item listed below that are shown in the bid schedule, which price an payment will be full compensation for all work prescribed in this se tion, except for extra work of any rehandling of spoil materials due t delayed burning as ordered by the Engineer and not made necessary b fault or negligence of the Contractor. Section 212-COMPACTION EQUIPMENT AND DENSITY CONTROL STRIPS AND NUCLEAR TESTING DEVICES Description 212.01 When specified, this procedure will be used to determine density requirements of selected embankments, subgrade, bases, and bituminous concrete. The procedure will consist of control strip construction to establish target densities for the specified course plus use of portable nuclear moisture/density testing equipment to determine in-place densities obtained during the construction process. Requirements 212.02 Compaction Equipment. Compaction equipment shall be capable of obtaining specified compaction requirements without detrimentally affecting the compacted material. The equipment shall be modern, efficient compacting units satisfactory to the Engineer. The compacting units may be of any type, provided they are capable of compacting each lift of material as specified and meet the minimum requirements as contained herein. Minimum requirements for rollers are as follows: (1) Sheepsfoot or tamping rollers shall be capable of exerting a force of 250 pounds (113 kg) per inch of length of roller drum. (2) Steel-wheel rollers other than vibratory shall be capable of exerting a force of not less than 250 (113 kg) pounds per inch of width of the compression roll or rolls. (3) Vibratory steel-wheel rollers, shall have a minimum weight of 6 tons (5.44 tonne). (4) Pneumatic-tire rollers shall have smooth tread tires of equal size that will provide a uniform compacting pressure for the full width of the roller and capable of exerting a ground pressure of at least 80 pounds per square inch (522 kPa). (5) Heavier compacting units may be required to achieve the specified density of the embankment. 212.03 Construction of Control Strips and Determination of Target Density. To determine target density, a control strip shall be constructed at the beginning of work on each course of material to be compacted. Each control strip, constructed to acceptable density and surface tolerances shall remain in place and become a section of the completed roadway. Unacceptable control strips shall be corrected or removed and replaced at the contractor's expense. A control strip shall have an area of approximately 400 square yards (334 m2) and shall be of the same depth specified for the construction of the course which it represents. The materials used in the construction of the control strip shall conform to the specification requirements. They shall be furnished from the same source and shall be of the same type used in the remainder of the course represented by the control strip. The underlying grade or pavement structure upon which a control strip is to be constructed shall have the prior approval of the Engineer. The equipment used in the construction of the control strip shall be approved by the Engineer and shall be of the same type and weight to |