SECTION LANDSCAPE SUBDRAINAGE. A. PART A and DIVISION 1 of PART B are hereby made a part of this SECTION.

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1 SECTION PART 1 GENERAL 1.01 GENERAL REQUIREMENTS A. PART A and DIVISION 1 of PART B are hereby made a part of this SECTION. B. Examine all conditions as they exist at the project prior to submitting a bid for the work of this SECTION Related Work: A. Documents affecting work of this Section include, but are not necessarily limited to, General Conditions, Supplementary Conditions, and Sections in Division One of these Specifications. 1. Earthwork - Section Finish Grading - Section Storm Drains - Section 4. Soil Preparation - Section Lawns and Grasses- Section CONTRACTOR'S IMPLEMENTATION OF THE 1 % MINIMUM PIPE PITCH DESIGN CRITERIA A. The Contractor is to establish the invert elevations from the following design criteria and as shown on the drawings to install the subdrainage system. The intent is to follow the slope of surface finish grades that keep the trench depth constant. Exceptions to this would be where runs are level, or less than 1%, or on lines which have to connect to storm drainage structures, in these cases the depth of the trench and its component parts would increase as necessary to accommodate a minimum of 1% or greater slope. B. Layout: Pipe layout and sizing is shown on the drawings. C. Adjustments: 1. Adjust the Subdrainage System to accommodate any adjustments that may be required. Notify the landscape architect of these conditions before doing adjustments

2 1.04 SUBMITTALS A. Product Data: Manufacturers' current catalog cuts and specifications and/or test results demonstrating compatibility with the specifications for the following: 1. Granular Fill: a. Granular analysis demonstrating compatibility with the specifications from a soils testing lab. 2. Drainage Blanket: a. Granular analysis demonstrating compatibility with the specifications from a soils testing lab. 3. Coarse Sand: a. Granular analysis demonstrating compatibility with the specifications from a soils testing lab. 4. Rigid Pipe: Solid and perforated PVC drain pipes and fittings. 5. Flexible Pipe: Perforated and solid flexible pipe and fittings. 6. Filter Fabric. B. Samples: 1. Filter Fabric - (12) inch x (12) inch. C. Landscape Subdrainage Systems Testing 1. Testing for Obstructions and Debris of the Installed Landscape Subdrainage System. a. Before trench backfilling and final connections are completed to the drainage lines installed in Section Storm Drains, test with adequate flowing water and where possible visual observation to confirm that there is no debris or obstructions, bad connections or any other fault in landscape subdrainage as follows: 1) For each subdrainage line, test all cleanouts one at a time in incremental from the furthermost one from the connection point to the closest one from the connection point to the Storm Drainage System Connection Point(s). 2) Written Drainage Testing Certification

3 a) The Contractor shall provide written certification that drainage flows unobstructed from each cleanout. b. Any part of the Landscape Sub Drainage system which fails this testing for any reason shall have the problem corrected by the Contractor and that portion retested until it passes at no additional expense to the Owner. 2. Testing and Flushing of the Subdrainage System After the Sport Field Soil Topsoil has Been Installed. a. Flush the Subdrainage System with adequate flowing water and where possible visual observation to confirm that there is no debris or obstructions, bad connections or any other fault in subdrainage as follows: 1) For each subdrainage line, test all cleanouts one at a time in incremental from the furthermost one from the connection point to the closest one from the connection point to the Storm Drainage System Connection Point(s). E. Record Drawings (Plans and details): Refer to Division 1 General Requirements, Closeout Procedures for additional Record Document requirements. 1. Locate such items as but not limited to the following items: a. Connection to existing drainage lines. b. Solid PVC pipe sizes, locations and invert elevations. c. Perforated Pipe sizes, locations and invert elevations. d. Cleanout locations. e. Sleeves. f. All other miscellaneous components. 2. Deliver 1 reproducible Record Drawings to the Landscape Architect within seven (7) working days before the date of Final Inspection. Delivery of the record drawings shall not relieve the Contractor of the responsibility of furnishing required information in the future PROJECT/SITE CONDITIONS A. Protection of Utilities:

4 1. Provide temporary support and protection of underground and surface utility structures, drains, services and other improvements to remain. 2. Where grade or alignment of pipe is obstructed by existing utility structures such as conduits, ducts or pipes, notify the Landscape Architect in writing and provide a recommendation to reroute the underdrain line meeting all other drawing and specification requirements for his approval. 3. Restore all damaged improvements to original condition at no additional cost DELIVERY, STORAGE, AND HANDLING A. Delivery: All containerized products shall be delivered to the site in manufacturer's original, unopened, legibly labeled containers. All pipe to be delivered bound securely to prevent damage. Supply pallets as required to protect products. B. Storage: Protect materials from damage, water and rust. Store pipes on beds that are full length of pipe. (Protect plastic materials from direct sunlight.) C. Pipe: Cap openings to prevent entry of dust, debris and other foreign matter SEQUENCING AND SCHEDULING A. Concealed Work: Prior to and work in this Section Verify in the field the locations and invert elevations of all drainage structures to receive landscape subdrainage connections. 1. Refer to Item 3.01B of this Section for additional requirements. 2. Refer to Civil Engineering Drawings for storm drainage structures. B. Lines and Levels: Establish for each drainage system and coordinate with other systems to prevent conflicts and maintain proper clearances. C. The following sequencing and scheduling is general only and does not list all the items of work: Rough grading and amending subsoil Connect piping by stubbing into in Storm Drainage Structures Install drain and subdrain main lines Install subdrain lateral lines Install drainage blanket components and cut off drains Install and amend sport field topsoil Finish grading Install lawn

5 1.08 DEFINITIONS A. References to Landscape Architect shall mean Architect or the Architect's designated representative

6 PART 2 - PRODUCTS 2.01 GRANULAR FILL A. Granular fill as required for fill beneath sportsfield areas shall be uniformly graded sand or sand and gravel consisting of clean, inert, rounded grains of quartz or other durable rock and free from loam or clay, surface coatings, mica, other deleterious materials with the following gradation. Percent Passing U.S. Sieve Size Number Minimum Maximum 4 inches inch Number mm B. Tests shall be by combined hydrometer and wet sieving in compliance with ASTM D422. C. The ratio of the particle size for 70% passing (D70) to the particle size for 20% passing (D10) shall be 8.0 or less. (D70/D20 < 8.0) D. The saturated hydraulic conductivity of the fill shall not less than 2 inches per hour according to ASTM D (2000) when compacted to a minimum of 92% Standard Proctor, ASTM DRAINAGE BLANKET - SAND AND GRAVEL A. Clean, inert, hard durable grains of quartz or other hard durable rock free from loam or clay, surface coatings and mica and deleterious materials with the following gradation: U.S. Sieve No. Minimum Maximum 3 inch 1 inch

7 2.03 MANUFACTURED UNITS A. RIGID PIPE: Solid And Perforated PVC Drain Pipe And Fittings 1. PVC drain and fittings shall conform to ASTM D or ASTM F679 (SDR 35 minimum). Polymer compounding and classification shall be in accordance with ASTM D-1784, (Class B). 2. All fittings shall be injected molded. Fabricated fittings are not allowed except as permitted by the Landscape Architect. 3. Joint for PVC pipe shall be oil resistant compression ring of elastomeric material conforming to ASTM D-3212, push on bell and spigot pressure type joints. 4. Solid PVC pipe and fittings and components shall be by a manufacturer who meets the specifications for these items as specified herein. 5. Pipes shall be sized to meet the requirements as shown on the Drawings. B. FLEXIBLE PIPE: - Solid And Perforated Pipe And Fittings 1. Flexible pipe and fittings shall be by ADS / Advanced Drainage Systems, Inc., Palmer MA. Tel and , or equal. 2. ADS Gasketed PVC adaptor fitting to connect flexible ADS piping to rigid PVC piping. a. ADS Gasketed PVC Pipe Fitting # N 12 Adaptor with SDR 35 Spigot, size 6 inch. 3. End Caps a. End Caps (solid) shall be # N 12 solid ADS gasketed end caps, size 4 inch. 4. Flexible ADS Pipes shall be 6 inch. C. Flat Pipe: 12 Advanedge Flat Pipe and Accessories as Manufactured by Advanced Drainage Systems, Inc., Flat Pipe: Flat Pipe and Filter Fabric Side Out: #1471 AA End Out: #1472 AA Endcap: #1432 AA

8 5. 12 Wye: #1480 AA Tee: 1460 AA. D. Filter Fabric 1. Mirafi #

9 PART 3 - EXECUTION 3.01 EXAMINATION A. Verification of Conditions: Verify exact locations all storm drainage structures and drain lines prior to beginning of work. Identify required layout lines, finish grading, subgrading, contours, and datum. Immediately report to Landscape Architect all discrepancies found prior to installation of Subdrainage System. B. Establish the connection outfall locations, grades and depths to accommodate the minimum 1% pitch (unless shown otherwise on the drawings) required for all subdrainage piping. 1. Concealed Work Storm Drainage Structureʼs: Prior to and work in this Section Verify in the field the locations and invert elevations of all drainage structures to receive landscape subdrainage connections. 2. Verify before any excavation that all subdrainage lines will have a minimum of 1% pitch to the storm drainage structure unless noted on the drawings. a. Notify the Landscape Architect immediately if the minimum 1% pitch is not achievable Refer to the Site Grading Plans and Details, Subdrainage Plans and Details and the Planting Plans and Details for the location and installation of the Site Drainage System and as specified herein INSTALLATION OF GRANULAR FILL A. Install Granular fill above the existing subsoil and below the topsoil as shown on the drawings and as specified herein INSTALLATION OF DRAINAGE BLANKET A. Install the Drainage Banket as shown on the Drawings and Details and as specified herein INSTALLATION OF SUBDRAINAGE A. The Subdrainage System shall be the Subdrainage installed as shown on the Drawings and Details and as specified herein. 1. Verify the Site Conditions to date and accommodate any changes that could affect the Subdrainage system. 2. Locate all the storm drainage structures for storm drainage pipe stub in locations and verify in the field the correct elevations in these structures as provided under the Civil Engineering Drawings

10 a. Core drill into the storm drainage structures and install a 6 inch solid PVC pipe into the drainage structure so 6 inches of the pipe penetrates out of the inside wall of the structure and 2 - feet beyond the outside wall of the structure unless otherwise required by the Civil Engineer. b. Provide mortar as required by the Civil Engineer that will provide a secure acceptable pipe connection into the storm drainage structure. This work shall be done at no additional cost to the Owner. 3. Install the ADS and Flat Drain gasketed PVC adaptor fittings to connect the solid PVC pipe to the flexible ADS Perforated Pipe. 4. Subdrainage Conditions and installation refer to the Drawings and the Details and as specified herein: a. Drainage Blanket Drains: 1) Refer to the Drawings and Details. b. Cutoff Drains: 1) Refer to the Drawings and Details. c. Install all other items required to install the system as shown on the Drawings or as specified herein MAINTENANCE AND PROTECTION A. General: Keep clean and protect subdrainage system until Acceptance of the work. 1. Sediments: Regularly inspect and clean all landscape drainage lines and pavement drains to prevent flooding. Sweep, hand, machine, or hose clean all drainage as necessary to maintain proper Landscape Drainage. 2. Subdrainage: Monitor sub-drainage systems and immediately identify all problems with drainage. Make adjustments and clean out as necessary to maintain proper functioning sub-drainage. END OF SECTION