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Home My WebLink About32-1640-Granite-Curb_Rev_1Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, project #71011 32 16240 GRANITE CURB 1 of 4 32 1640 Granite Curb PART 1 - GENERAL 1.1 GENERAL PROVISIONS A. Attention is directed to the CONTRACT AND GENERAL CONDITIONS and all Sections within DIVISION 01 - GENERAL REQUIREMENTS which are hereby made a part of this Section of the Specifications. 1.2 WORK INCLUDED A. The work includes furnishing all labor, materials, equipment, and supervision to construct the various types of granite curbing, in accordance with the Drawings and Specifications. 1.3 RELATED WORK A. Examine Contract Documents for requirements that affect work of this Section. Other Specification Sections that directly relate to work of this Section include, but are not limited to: 1. Section 014000 - QUALITY REQUIREMENTS; Inspection and testing. 2. Provision of waste management: Section 01 7419 - Construction Recycling Waste Management Plan. 3. Provision of General LEED requirements and forms: 01 8113 Sustainable Design Requirements. 4. Section 03 3000 - CAST-IN-PLACE CONCRETE; Concrete curb; concrete for base. 5. Section 31 0000 - EARTH MOVING; Establishment of subgrade elevations and courses. 6. Section 32 1216 - ASPHALT PAVING. 1.4 REFERENCES A. Comply with applicable requirements of the following standards. Where these standards conflict with other specified requirements, the most restrictive requirements shall govern. 1. American Society for Testing and Materials (ASTM): a. ASTM C 131 Resistance to Degradation of Small-Size Coarse Aggregate by Abrasion and Impact in the Los Angeles Machine b. ASTM C 615 Structural Granite 2. Commonwealth of Massachusetts Highway Department (MHD): Specifications Standard Specifications for Highway and Bridges 1.5 SUBMITTALS A. Submit complete shop drawings of each curb type and size for Architect's approval. Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, project #71011 32 16240 GRANITE CURB 2 of 4 1.6 SAMPLE SECTION A. A sample curb section, full dimension, 6 feet long minimum, shall be fabricated prior to start of granite curbing. The work will be inspected by the Architect. If the original sample is not acceptable, the Contractor shall construct additional sample sections until an accepted sample is obtained. The accepted sections shall become the standard for the entire job, and shall remain undisturbed until completion of all granite curbing. 1.7 QUALITY ASSURANCE A. Unless otherwise indicated, granite curb materials and construction shall conform to the applicable portions of the following: 1. MHD Specifications Section 500, "Curb and Edging." 1.8 DELIVERY, STORAGE, AND HANDLING A. Granite curb units shall be delivered to the job adequately protected from damage during transit. B. Curb shall be protected against staining, chipping, and other damage. Cracked, badly chipped, or stained units will be rejected and shall not be employed in the work. PART 2 - PRODUCTS 2.1 BASE COURSE A. Material for base course shall be Dense Graded Crushed Stone, as specified in Section 310000 - EARTH MOVING. 2.2 GRANITE CURB A. Granite curb required to complete the work of this Section shall be a structural granite conforming to ASTM C 615, Class I Engineering Grade, suitable for curbstone use. 1. Curb shall be light grey, free from seams which impair structural integrity, and with percentage of wear less than 32%, as determined by ASTM C 131. B. Curb materials shall conform to MHD Specifications Section M9.04.0 and shall meet requirements specified in the subsection of Division III, Materials of the MHD Specifications: 1. Item: a. Vertical Granite Curb. b. Transitional Granite Curb. c. Flush Granite Curb. Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, project #71011 32 16240 GRANITE CURB 3 of 4 C. Provide sawn vertical faces on both sides for all curb sizes. Provide thermal finish on exposed pavement/paver side only. 2.3 CEMENT MORTAR A. Mortar for pointing joints between curbstones shall be a cement mortar composed of one-part Portland cement and two parts sand, by volume with sufficient water to form a workable, stiff mixture. 2.4 CONCRETE A. Concrete for foundation at joints shall conform to Section 03 3000 - CAST-IN-PLACE CONCRETE. PART 3 - EXECUTION 3.1 GRADING A. Areas to receive granite curb will be compacted and brought approximately to subgrade elevation under Section 310000 - EARTH MOVING before work of this section is performed. Final fine grading, filling, and compaction of subgrade to receive curbing to form a firm, uniform, accurate, and unyielding subgrade at required elevations and to required lines, shall be done under this Section. B. Existing subgrade material which will not readily compact shall be removed and replaced with satisfactory materials. Additional materials needed to bring subgrade to required line and grade and to replace unsuitable material removed shall be material conforming to Section 31 0000 - EARTH MOVING. C. Subgrade of areas to receive curbing shall be recompacted to bring top 8 inch of material immediately below gravel base course to a compaction of at least 90% of maximum density, as determined by ASTM D 1557, Method D. Subgrade compaction shall extend for a distance of at least 1 ft. beyond curb edge. D. Excavation required in subgrade shall be completed before fine grading and final compaction of subgrade are performed. Where excavation must be performed in completed subgrade or subbase subsequent backfill and compaction shall be performed as specified in Section 31 0000 - EARTH MOVING. Completed subgrade after filling such areas shall be uniformly and properly graded. E. Areas being graded or compacted shall be kept shaped and drained during construction. Ruts greater than or equal to 2 inch deep in subgrade, shall be graded out, reshaped and recompacted before placing granite curb. F. Materials shall not be stored or stockpiled on subgrade. G. Disposal of debris and other material excavated and/or stripped under this section, and material unsuitable for or in excess of requirements for completing work of this Section shall be legally disposed of off-site. Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, project #71011 32 16240 GRANITE CURB 4 of 4 H. Prepared subgrade will be inspected by the Architect. Subgrade shall be approved by the Architect before installation of aggregate base course. Disturbance to subgrade caused by inspection procedures shall be repaired under this Section of the specification. 3.2 AGGREGATE BASE COURSE A. Aggregate base course for paving and the spreading, grading, and compaction methods employed shall conform to Section 31 0000 - EARTH MOVING. B. Subgrade and base course shall be kept clean and uncontaminated. Less select materials shall not be permitted to become mixed with gravel. Materials spilled outside pavement lines shall be removed and area repaired. C. Portions of subgrade or of construction above which become contaminated, softened, or dislodged by passing of traffic, or otherwise damaged, shall be cleaned, replaced, and otherwise repaired to conform to the requirements of Section 31 0000 - EARTH MOVING before proceeding with next operation. 3.3 SETTING CURB A. Curb shall be set in aggregate base with continuous concrete haunch foundation, with trench bottom at minimum 6 inch below bottom of curb. Excavation shall be filled to required level with base course material as specified above. B. Vertical face of vertical curb shall be plumb, with curb top parallel to adjacent surface. C. Curb shall be set accurately to line and grade in continuous haunch. Curb units shall be fitted together as closely as possible. Curb shall not be field cut. D. Joints, between curb units shall be carefully filled with a cement mortar, and neatly pointed on the top and front exposed portions. After pointing, excess mortar shall be cleaned from curb surface. E. Backfill material on each side of curb shall be as specified for adjacent surface and shall be thoroughly compacted by means of power tampers. Extreme care shall be taken not to destroy alignment. Curb sections disturbed during backfilling or otherwise shall be reset to line and grade, and properly backfilled. END SECTION