504STANDPIPES

546 503- 3.03 Frame and Grate: The fabrication of frame and grate units shall conform to the requirements of Subsection 604- 3.06 of the specifications. When reconstruct catch basin is specified, in accordance with Subsection 503- 3.02 of the specifications, and when an existing frame and grate is unsuitable for further use, a new frame and grate shall be furnished and installed. Where an existing frame and grate is suitable for reuse but is either lost or damaged by the contractor's operations to the extent that it is unacceptable for reuse, it shall be replaced at no additional cost to the Department. 503- 4 Metho d of Measurement: Catch basins will be measured as a unit for each catch basin, including frame and grate; for each catch basin reconstructed; or for each frame and grate furnished. 503- 5 Basis of Payment: The accepted quantities of catch basins, of reconstruct catch basins, and of frame and grate for catch basin, measured as provided above, will be paid for at the contract unit price each, complete in place, including aprons, temporary construction drains, excavation and backfill. The removal of unsuitable material below the required depth and the furnishing and placing of material in the voids thus created will be paid for in accordance with the provisions of Subsection 104. 02 of the specifications. 504- 1 Description: The work under this section shall consist of furnishing all materials and constructing standpipes for irrigation or drainage pipes, including excavation, backfill, covers, and gates, at the locations designated on the project plans and in accordance with the details shown on the plans and the requirements of these specifications. 504- 2 Materials: 504- 2.01 Concrete: Concrete shall be Class B Portland cement concrete conforming to the requirements of Section 1006 of the specifications. TABLE OF CONTENTS INDEX 547 504- 2.02 Concrete Pipe: Concrete pipe materials shall conform to the requirements of Section 1010 of the specifications . 504- 2.03 Mortar: Mortar for pipe joints shall conform to the requirements of Subsection 503- 2.03 of the specifications. 504- 2.04 Metal Covers: Materials furnished for structural steel plate and bars in steel plate covers shall conform to the requirements of Section 1004 of the specifications for structural carbon steel. 504- 2.05 Metal Gates: Materials furnished for metal gates shall conform to the requirements specified on the plans or in the Special Provisions. 504- 3 Construction Requirements: For a standpipe using reinforced concrete pipe, the pipe shall be placed so that the bell or grooved end is uppermost to receive the cover. All connections to new or existing pipes will be considered as being a part of the standpipe. Mortar joints shall be made in accordance with the details shown on the plans and shall be watertight. Concrete standpipes shall be constructed in accordance with the requirements of Section 601 of the specifications. Excavation and backfill shall be in accordance with the requirements of Subsection 203- 5 of the specifications. 504- 4 Method of Measurement: Standpipes, of the types specified on the project plans, will be measured as a unit for each type constructed. 504- 5 Basis of Payment: The accepted quantities of standpipes, measured as provided above, will be paid for at the contract unit price each, complete in place, including excavation and backfill. The removal of unsuitable material below the required depth and the furnishing and placing of material in the voids thus created will be paid TABLE OF CONTENTS INDEX