Copyright 2012 AIA MasterSpec Premium 03/12

PRODUCT MASTERSPEC LICENSED BY ARCOM TO UPONOR.

Copyright 2012 by The American Institute of Architects (AIA)

Exclusively published and distributed by Architectural Computer Services, Inc. (ARCOM) for the AIA

This Product MasterSpec Section is licensed by ARCOM to Uponor ("Licensee").

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SECTION 232113.13 - UNDERGROUND HYDRONIC PIPING

TIPS:

To view non-printing Editor's Notes that provide guidance for editing, click on Masterworks/SingleFile Formatting/Toggle/Editor's Notes.

To read detailed research, technical information about products and materials, and coordination checklists, click on Masterworks/Supporting Information.

Revise this Section by deleting and inserting text to meet Project-specific requirements.

Verify that Section titles referenced in this Section are correct for this Project's Specifications; Section titles may have changed.

PART 1 - GENERAL

1.1  RELATED DOCUMENTS

Retain or delete this article in all Sections of Project Manual.

  1. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division01 Specification Sections, apply to this Section.

1.2  SUMMARY

  1. Section Includes:
  2. Copper tube and fittings.
  3. Steel pipes and fittings.
  4. Ductile-iron pipe and fittings.
  5. Plastic pipe and fittings.
  6. Fiberglass pipe and fittings.
  7. Transition fittings.
  8. Conduit piping system.
  9. Cased piping system.
  10. Loose-fill insulation.

1.3  PERFORMANCE REQUIREMENTS

  1. Provide components and installation capable of producing hydronic piping systems with the following minimum working-pressure ratings:

Revise pressure ratings in three subparagraphs below. Coordinate with Section232113 "Hydronic Piping." Working pressure is equal to relief pressure plus the static height of the system and pumping head. The only working pressure mandated by authorities having jurisdiction is for makeup water.

  1. Hot-Water Piping: 80 psig (552 kPa) at 200 degF (93 degC).
  2. Chilled-Water Piping: 80 psig (552 kPa) at 140 degF (60 degC).
  3. Condenser-Water Piping: 80 psig (552 kPa) at 200 degF (93 degC).

1.4  ACTION SUBMITTALS

  1. Product Data: For the following:
  2. Conduit piping.
  3. Cased piping.
  4. Loose-fill insulation.
  5. LEED Submittals:

Retain subparagraph below if low-emitting materials are required for LEEDCreditEQ4.1; coordinate with requirements selected in Part2 for adhesives.

  1. Product Data for CreditEQ4.1: For adhesives, documentation including printed statement of VOC content and chemical components.
  2. Shop Drawings: For underground hydronic piping. Signed and sealed by a professional engineer.
  3. Calculate requirements for expansion compensation for underground piping.
  4. Show expansion compensators, offsets, and loops with appropriate materials to allow piping movement in the required locations. Show anchors and guides that restrain piping movement with calculated loads, and show concrete thrust block dimensions.
  5. Show pipe sizes, locations, and elevations. Show piping in trench, conduit, and cased pipe with details showing clearances between piping, and show insulation thickness.

1.5  INFORMATIONAL SUBMITTALS

Retain "Profile Drawings" Paragraph below if profiles are not shown on Drawings.

  1. Profile Drawings: Show system piping in elevation. Draw profiles at horizontal scale of not less than 1 inch equals 50 feet (1:500) and at vertical scale of not less than 1 inch equals 5 feet (1:50). Indicate manholes and piping. Show types, sizes, materials, and elevations of other utilities crossing hydronic piping.

Coordinate "Qualification Data" Paragraph below with qualification requirements in Section014000 "Quality Requirements" and as supplemented in "Quality Assurance" Article.

  1. Qualification Data: For qualified Installer.

Retain "Welding certificates" Paragraph below if retaining procedures for welder certification in "Quality Assurance" Article.

  1. Welding certificates.

Retain "Material Test Reports" Paragraph below for material test reports that are Contractor's responsibility.

  1. Material Test Reports: For [conduit] [cased] piping.
  2. Source quality-control reports.

Retain paragraph below if Contractor is responsible for field quality-control testing and inspecting.

  1. Field quality-control reports.

1.6  QUALITY ASSURANCE

Retain "Fiberglass Pipe and Fitting Installers" Paragraph below for fiberglass pipe assembly.

  1. Fiberglass Pipe and Fitting Installers: Installers of RTRF and RTRP shall be certified by manufacturer of pipes and fittings as having been trained and qualified to join fiberglass piping with manufacturer-recommended adhesive.

Retain "Welding Qualifications" Paragraph below if shop or field welding is required. If retaining, also retain "Welding certificates" Paragraph in "Informational Submittals" Article.

  1. Welding Qualifications: Qualify procedures and personnel according to ASME Boiler and Pressure Vessel Code: SectionIX.
  2. Comply with provisions in ASMEB31.9, "Building Services Piping."
  3. Certify that each welder has passed AWS qualification tests for welding processes involved and that certification is current.
  4. Code Compliance: Comply with UMC, IMC, UPC, and IPC for materials, products, and installation.
  5. Use manufacturer's installation instructions.

PART 2 - PRODUCTS

See "Writing Guide" Article in the Evaluations for a discussion of this Section's organization and the most efficient way to revise this Section.

2.1  COPPER TUBE AND FITTINGS

Retain this article for direct-bury piping or to describe materials for carrier pipe for conduit or cased piping.

TypeM (TypeC) in "Drawn-Temper Copper Tubing" Paragraph below is not included in the 2004 ASHRAE HANDBOOK - "HVAC Systems and Equipment," Ch.41, Table5, "Application of Pipe, Fittings, and Valves for Heating and Air Conditioning."

  1. Drawn-Temper Copper Tubing: [ASTMB88, TypeL (ASTMB88M, TypeB)] [ASTMB88, TypeM (ASTMB88M, TypeC)].
  2. Wrought-Copper Fittings: ASMEB16.22.
  3. Wrought-Copper Unions: ASMEB16.22.

See "Copper Tubing" Article in the Evaluations for discussions of solder and brazing materials described in both paragraphs below.

  1. Solder Filler Metals: ASTMB32, lead-free alloys. Include water-flushable flux according to ASTMB813.
  2. Brazing Filler Metals: AWSA5.8/A5.8M, BCuPSeries, copper-phosphorus alloys for joining copper with copper; or BAg-1, silver alloy for joining copper with bronze or steel.

2.2  STEEL PIPES AND FITTINGS

Retain this article for direct-bury piping or to describe materials for carrier pipe for conduit or cased piping.

  1. Steel Pipe: ASTMA53/A53M, [black] [galvanized] with plain ends; type, grade, and wall thickness as indicated in "Piping Application" Article.
  2. Cast-Iron, Threaded Fittings: ASMEB16.4; [Class125] [and] [Class250].
  3. Malleable-Iron, Threaded Fittings: ASMEB16.3, [Class150] [and] [Class300].
  4. Malleable-Iron Unions: ASMEB16.39; [Class150] [Class250] [and] [Class300].

Coordinate flange class in "Cast-Iron Pipe Flanges and Flanged Fittings" Paragraph below with other products in this Section and in related Sections to match face size and bolt patterns.

  1. Cast-Iron Pipe Flanges and Flanged Fittings: ASMEB16.1, [Class125] [and] [Class250]; raised ground face, and bolt holes spot faced.
  2. Wrought-Steel Fittings: ASTMA234/A234M, wall thickness to match adjoining pipe.

Flanges and fittings in "Wrought Cast- and Forged-Steel Flanges and Flanged Fittings" Paragraph below are available in several classes, materials, facings, and end connections.

  1. Wrought Cast- and Forged-Steel Flanges and Flanged Fittings: ASMEB16.5, including bolts, nuts, and gaskets of the following material group, end connections, and facings:
  2. Material Group: 1.1.
  3. End Connections: Butt welding.
  4. Facings: Raised face.
  5. Steel Welding Fittings: [ASMEB16.9] [and] [ASTMA234/A234M], seamless or welded.
  6. Welding Filler Metals: Comply with AWSD10.12M/D10.12 for welding materials appropriate for wall thickness and chemical analysis of steel pipe being welded.

In "Grooved-End-Pipe Couplings for Galvanized-Steel Piping" Paragraph below, AWWAC606 covers couplings in NPS3/4 to NPS24 (DN20 to DN600).

  1. Grooved-End-Pipe Couplings for Galvanized-Steel Piping: AWWAC606 for steel-pipe dimensions. Include ferrous housing sections, EPDM-rubber gaskets suitable for hot and cold water, and bolts and nuts.
  2. Nipples: ASTMA733, made of same materials and wall thicknesses as pipe in which they are installed.
  3. Pipe-Flange Gasket Materials: Suitable for chemical and thermal conditions of piping system contents.
  4. ASMEB16.21, nonmetallic, flat, asbestos free, 1/8-inch (3.2-mm) maximum thickness unless thickness or specific material is indicated.
  5. Full-Face Type: For flat-face, Class125, cast-iron and -bronze flanges.
  6. Narrow-Face Type: For raised-face, Class250, cast-iron and steel flanges.
  7. Flange Bolts and Nuts: ASMEB18.2.1, carbon steel, unless otherwise indicated.

2.3  DUCTILE-IRON PIPE AND FITTINGS

Retain this article for direct-bury piping or to describe materials for carrier pipe for conduit or cased piping.

Pipe in "Mechanical-Joint, Ductile-Iron Pipe" Paragraph below is available in NPS3 to NPS64 (DN80 to DN1600).

  1. Mechanical-Joint, Ductile-Iron Pipe: AWWAC151/A21.51, with mechanical-joint bell and plain spigot end.

Fittings in "Standard-Pattern, Mechanical-Joint Fittings" Subparagraph below are available in NPS3 to NPS48 (DN80 to DN1200).

  1. Standard-Pattern, Mechanical-Joint Fittings: AWWAC110/A21.10, ductile or gray iron.

Fittings in "Compact-Pattern, Mechanical-Joint Fittings" Subparagraph below are available in NPS3 to NPS24 (DN80 to DN600).

  1. Compact-Pattern, Mechanical-Joint Fittings: AWWAC153/A21.53, ductile iron.
  2. Glands, Gaskets, and Bolts: AWWAC111/A21.11, ductile- or gray-iron glands, rubber gaskets, and steel bolts.

2.4  PLASTIC PIPE AND FITTINGS

Retain this article for direct-bury piping or to describe materials for carrier pipe for conduit or cased piping.

See "Plastic Piping" Article in the Evaluations for discussion of product characteristics and maximum temperatures.

  1. CPVC Plastic:
  2. Pipe: ASTMF441/F441M, Schedules40 and 80, plain ends as indicated in "Piping Application" Article.
  3. Pipe Fittings: Socket-type pipe fittings, ASTMF438 for Schedule40 pipe; ASTMF439 for Schedule80 pipe.
  4. Solvent Cements: ASTMF493.

Retain both subparagraphs below if low-emitting materials are required for LEED-NCCreditEQ4.1.

  1. Use CPVC solvent cement that has a VOC content of 490g/L or less when calculated according to 40CFR59, SubpartD (EPA Method24).
  2. Use adhesive primer that has a VOC content of 550g/L or less when calculated according to 40CFR59, SubpartD (EPA Method24).
  3. PVC Plastic:
  4. Pipe: ASTMD1785, Schedules40 and 80, plain ends as indicated in "Piping Application" Article.
  5. Pipe Fittings: Socket-type pipe fittings, ASTMD2466 for Schedule40 pipe; ASTMD2467 for Schedule80 pipe.
  6. Solvent Cements: ASTMD2564. Include primer according to ASTMF656.

Retain both subparagraphs below if low-emitting materials are required for LEED-NCCreditEQ4.1.

  1. Use PVC solvent cement that has a VOC content of 510g/L or less when calculated according to 40CFR59, SubpartD (EPA Method24).
  2. Use adhesive primer that has a VOC content of 550g/L or less when calculated according to 40CFR59, SubpartD (EPA Method24).
  3. PEX-a (Engel method):
  4. Basis-of-Design Product: Uponor; PEX-a pipe and fittings.
  5. Pipe: ASTM F 877, SDR 9 PEX-a tubing.
  6. Fittings for PEX Tube:
  7. ASTM F 1960, cold-expansion fittings manufactured from brass or polysulfone as specified in ASTM D 6394 in conjunction with PEX ring.
  8. ASTM F 877 approved compression fittings.
  9. ASTM F 1807, metal-insert type with copper or stainless-steel crimp rings and matching PEX tube dimensions.
  10. HDPE:
  11. Pipe: ASTM F 714, SDR 11 HDPE Piping.
  12. Fittings for HDPE Tube:
  13. Socket-type fittings, ASTM D 2683.
  14. Butt Heat Fusion Polyethylene (PE) Plastic Fittings, ASTM D 3261.
  15. Electro Fusion Type Polyethylene Fittings, ASTM F 1055.
  16. Plastic, Pipe-Flange Gasket, Bolts, and Nuts: Type and material recommended by piping system manufacturer unless otherwise indicated.

2.5  FIBERGLASS PIPE AND FITTINGS

Retain this article for direct-bury piping or to describe materials for carrier pipe for conduit or cased piping.

RTRP piping is available with ends for other types of joints. See the Evaluations for discussion of product characteristics and maximum temperatures and pressures.

  1. RTRP: ASTMD2996, filament-wound pipe with tapered bell and spigot ends for adhesive joints.
  2. RTRF: Compression or spray up/contact molded of same material, pressure class, and joining method as pipe.
  3. Fiberglass Pipe Adhesive: As furnished or recommended by pipe manufacturer.

Retain subparagraph below if low-emitting materials are required for LEED-NCCreditEQ4.1.

  1. Use fiberglass adhesive that has a VOC content of 80g/L or less when calculated according to 40CFR59, SubpartD (EPA Method24).
  2. Flanges: ASTMD4024. Full-face gaskets suitable for the service, minimum 1/8-inch- (3.2-mm-) thick, 60-70 durometer. ASTMA307, GradeB, hex-head bolts with washers.

2.6  TRANSITION FITTINGS

  1. PEX-to-Metal Transition Fittings: One-piece fitting with one brass insert and one ASTM F 1960 cold-expansion fitting.
  2. Basis-of-Design Product: Uponor; PEX-a ASTM F 1960 transition fitting.
  3. PEX-to-Plastic Transition Fittings: One-piece fitting with one ASTM F 1960 cold-expansion fitting and one Schedule 80 solvent-cemented joint-end.
  4. Basis-of-Design Product: Uponor; PEX-a ASTM F 1960 transition fitting.
  5. PEX-to-PP-R Transition Fittings: One-piece fitting with one ASTM F 1960 cold-expansion fitting and one PP-R fusion end.
  6. Plastic-to-Metal Transition Fittings: [CPVC] [and] [PVC] one-piece fitting with one threaded brass or copper insert and one Schedule80 solvent-cemented-joint end.

2.7  CONDUIT PIPING SYSTEM

  1. Description: Factory-fabricated and -assembled, airtight and watertight, drainable, pressure-tested piping with conduit, inner pipe supports, and insulated carrier piping. Fabricate so insulation can be dried in place by forcing dry air through conduit.

See Editing Instruction No.1 in the Evaluations for cautions about naming manufacturers. Retain subparagraph and list of manufacturers below. See Section016000 "Product Requirements."

  1. Manufacturers: Subject to compliance with requirements, provide products by one of the following:
  2. Insul-Tek Piping Systems, Inc.
  3. Perma-Pipe, Inc.
  4. Rovanco Piping Systems, Inc.
  5. Thermacor Process, L.P.
  6. Tricon Piping Systems, Inc.
  7. Insert manufacturer's name>.
  8. Carrier Pipe: [Copper tube and fittings] [Standard-weight, steel pipe and fittings] [Schedule 40, steel pipe and fittings] [Schedule 80, steel pipe and fittings] [Ductile-iron pipe and fittings] [Plastic pipe and fittings] [Fiberglass pipe and fittings].
  9. Carrier Pipe Insulation:

Retain insulation materials in subparagraphs below that are required in "Piping Application" Article.

  1. Mineral-Wool Pipe Insulation: Mineral or glass fibers bonded with a thermosetting resin. Comply with ASTMC547, [TypeI 850 degF (454 degC)] [TypeII, 1200 degF (649 degC)], GradeA.
  2. Bands: ASTMA666, Type304, stainless steel, 3/4 inch (19 mm) wide, 0.020 inch (0.5 mm) thick.
  3. Calcium Silicate Pipe Insulation: Flat-, curved-, and grooved-block sections of noncombustible, inorganic, hydrous calcium silicate with a non-asbestos fibrous reinforcement. Comply with ASTMC533, TypeI.
  4. Bands: ASTMA666, Type304, stainless steel, 3/4 inch (19 mm) wide, 0.020 inch (0.5 mm) thick.
  5. Polyisocyanurate Foam Pipe Insulation: Unfaced, preformed, rigid cellular polyisocyanurate material intended for use as thermal insulation.
  6. Comply with ASTMC591, TypeI or TypeIV, except thermal conductivity (k-value) shall not exceed 0.19 Btu x in./h x sq. ft. x degF (0.027W/m xK) at 75 degF (24 degC) after 180 days of aging.
  7. Flame-spread index shall be 25 or less and smoke-developed index shall be 50 or less for thickness up to 1-1/2 inches (38 mm) as tested by ASTME84.
  8. Fabricate shapes according to ASTMC450 and ASTMC585.
  9. Polyurethane Foam Pipe Insulation: Unfaced, preformed, rigid cellular polyurethane material intended for use as thermal insulation.
  10. Comply with ASTMC591, TypeI or TypeIV, except thermal conductivity (k-value) shall not exceed 0.19 Btu x in./h x sq. ft. x degF (0.027W/m xK) at 75 degF (24 degC) after 180 days of aging.
  11. Flame-spread index shall be 25 or less and smoke-developed index shall be 50 or less for thickness up to 1-1/2 inches (38 mm) as tested by ASTME84.
  12. Fabricate shapes according to ASTMC450 and ASTMC585.
  13. Minimum Clearance:
  14. Between Carrier Pipe Insulation and Conduit: 1 inch (25 mm).
  15. Between Insulation of Multiple Carrier Pipes: 3/16 inch (4.75 mm).
  16. Between Bottom of Carrier Pipe Insulation and Conduit: 1 inch (25 mm).
  17. Between Bottom of Bare, Carrier Pipe and Casing: 1-3/8 inches (35 mm).
  18. Conduit: Spiral wound, steel.

Retain one of first two subparagraphs below.