ATT_02a_Division_22_Plumbing.pdf

1 Division 22 - Plumbing

DIVISION 22 – PLUMBING

SECTION 22050- BASIC MECHANICAL MATERIALS AND METHODS

PART 1 - GENERAL

A. Summary:

1. This Section includes the following:

a. Piping materials and installation instructions common to most piping systems.

b. Transition fittings

c. Dielectric fittings.

d. Sleeves.

e. Escutcheons.

f. Equipment installation requirements common to equipment Sections.

g. Painting and Finishing.

h. Concrete equipment pad.

i. Supports and anchorages.

B. Definitions:

1. Finished Spaces: Spaces other than mechanical and electrical equipment rooms, furred spaces, pipe and duct shafts, unheated spaces immediately below roof, spaces above ceilings, unexcavated spaces, crawlspaces, and tunnels.

2. Exposed, Interior Installations: Exposed to view indoors. Examples include finished occupied spaces and mechanical equipment rooms.

3. Exposed, exterior Installations: exposed to view outdoors or subject to outdoor ambient temperatures and weather conditions. Examples include rooftop locations.

4. Concealed, Interior Installations: Concealed from view and protected from physical contact by building occupants. Examples include above ceiling and in duct shafts.

5. Concealed, Exterior Installations: Concealed from view and protected from weather conditions and physical contact by building occupants. Examples include installations within heated unheated shelters.

6. The following are industry abbreviations for plastic materials:

a. PVC: Polyvinyl chloride plastic

7. The following are industry abbreviations for rubber materials:

a. EPDM: Ethylene-propylene-diene terpolymer rubber.

C. Quality Assurance:

1. Adhesives will meet or exceed the VOC limits of South Coast Air Quality

Management District Rule #1168. Sealants used as a filer must meet or exceed

Bay Areas Air Resource Board Reg. 8, Rule 51.

2. Steel Support Welding: Qualify process and operators according to AWS D1.1, “Structural welding Code- Steel”.

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Section 22050- Basic Mechanical Material and Methods Cont.

3. Electrical Characteristics for Mechanical Equipment: Equipment of higher electrical characteristics may be furnished provided such proposed equipment is approved in writing and connecting electrical services, circuit breakers, and conduit sizes are appropriately modified. If minimum energy ratings or efficiencies are specified, equipment will comply with requirements.

D. Delivery, Storage, and Handling:

1. Deliver pipes and tubes with factory-applied end caps. Maintain end caps through shipping, storage, and handling to prevent pipe end damage and to prevent entrance of dirt, debris, and moisture.

2. Store plastic pipe protected from direct sunlight. Support in a manner that prevents sagging, bending and deformation of pipe.

E. Coordination:

1. Arranged for pipe spaces, chases, slots, and openings in building structure during progress of construction, to allow for mechanical installations.

2. Coordinate installation of required supporting devices and set sleeves in poured-in-place concrete and other permanent structural components as they are constructed.

3. Coordinate requirements for access panels and doors for mechanical items requiring access that are concealed behind finished surfaces. Access panels and doors are specified in Division 8, Section “Steel Doors and Frames”.

PART 2 - PRODUCTS

A. Pipe, Tube, and Fittings:

1. Refer to individual Division 22 piping Sections for pipe, tube, and fitting materials and joining methods.

2. Pipe Threads: ASME B1.20.1 for factory-threaded pipe and pipe fittings.

B. Joining Materials:

1. Refer to individual Division 22 piping Sections for special joining materials not listed below.

2. Pipe-Flange Gasket Materials: Suitable for chemical and thermal conditions of piping system contents:

a. ASME B 16.21, nonmetallic, flat, asbestos-free, 1/8 inch maximum thickness unless thickness or specific materials are indicated

1. Full-Face Type: for flat-face, Class 125, cast-iron and cast bronze flanges.

2. Narrow-Face Type: For raised-face, Class 250, cast-iron and steel flanges.

b. AWWA C110, rubber, flat-face, 1/8 inch thick, unless otherwise indicated;

and full-face or ring type, unless otherwise indicated.

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3. Flange Bolts and Nits: ASME B18.2.1, carbon steel, unless otherwise indicated.

4. Solder Filler Metals: ASTM B 32, lead-free alloys. Include water-flushable flux according to ASTM B 813.

5. Brazing Filler Metals: AWS A5.8, BCuP Series, copper-phosphorus alloys for general-duty brazing, unless otherwise indicated; Comply with AWS A5.8, BAg1, and silver alloy for refrigerant piping, unless otherwise indicated.

6. Welding Filler Metals: Comply with AWS D10.12 for welding materials appropriate for wall thickness and chemical analysis of steel pipe being welded.

7. Solvent Cement for Joining Plastic Piping:

a. PVC Piping: ASTM D 2564. Include primer according to ASTM F 656.

C. Transition Fittings:

1. AWWA Transition Couplings: Same size as, and with pressure rating at least equal to and with ends compatible with, piping to be joined.

b. Underground Piping: AWWA C219, metal sleeve-type coupling.

c. Aboveground Pressure Piping: Pipe fitting.

2. Plastic-to-Metal Transition fittings: PVC one-piece fitting with manufacturer’s

Schedule 80 equivalent dimensions; one end with threaded brass insert, and one solvent-cement-joint end.

3. Plastic-to-Metal Transition Adaptors: One-piece fitting with manufacturer’s

SDR 11, or equivalent dimensions; one end with threaded brass insert, and one end solvent-cement-joint end.

4. Plastic-to-Metal Transition Unions: MSS SP-107, (PVC) four part union.

Include brass end, solvent-cement-joint end, rubber O-ring, and union nut.

5. Flexible Transition Couplings for Underground Non-pressure Drainage Piping:

Comply with ASTM C 1173 with elastomeric sleeve, ends same size as piping to be joined, and corrosion-resistant metal band on each end.

D. Dielectric Fittings:

1. Description: Combination fitting of copper alloy and ferrous materials with threaded solder-joint, plain, or welded-neck end connections that match piping system materials.

2. Insulating Material: Suitable for system fluid, pressure, and temperature.

3. Dielectric Unions: Factory-fabricated, companion-flange assembly, for 250 psig minimum working pressure at 180 deg. F.

4. Dielectric Flanges: Factory-fabricated, companion-flange assembly, for 150- or

300-psig minimum working pressure as required to suit system pressures.

5. Dielectric Nipples: electroplated steel nipple with inert and noncorrosive, thermoplastic lining; plain, threaded, or grooved ends; and 300 psig minimum working pressure at 225 deg. F.

E. Sleeves:

1. Steel Pipe: ASTM A 53, Type E, Grade B, Schedule 40, galvanized, plain ends.

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2. Stack Sleeve Fittings: Manufactured, cast-iron sleeve with integral clamping flange. Include clamping ring and bolts and nuts for membrane flashing.

a. Underdeck Clamp: Clamping ring with set screws.

F. Escutcheons:

1. Description: Manufactured wall and ceiling escutcheons and floor plates, with an ID to closely fit around pipe, tube, and insulation of insulted piping and an

OD to completely cover opening.

2. One-Piece, Deep-Pattern Type: Deep-drawn, box-shaped brass with polished chrome plated finish.

3. One-Piece, Cast-Brass Type: with set screw, polished chrome-plated and rough brass.

4. Split-Casting, Cast-Brass Type: With concealed hinge and set screw, polished chrome-plated and rough brass.

5. One-Piece, Stamped-Steel Type: with set screw or spring clips, chrome-plated finish.

6. Split-Plate Stamped-Steel Type: With concealed hinge, set screw or spring clips, chrome-plated finish.

7. One-Piece, Floor-Plate Type: Cast-iron floor plate.

8. Split-Casting, Floor-Plate Type: Cast brass with concealed hinge and set screw.

PART 3- EXECUTION

A. Piping Systems- Common Requirements:

1. Install piping according to the following requirements and division 22 Sections specifying piping systems.

2. Drawings plans, schematics, and diagrams indicate the general location and arrangement of fixtures and requirements. Indicated locations and arrangements were used to size pipe and calculate friction loss, expansion, pump sizing, and other design considerations. Install piping as indicated unless deviations to layout are approved on coordination Drawings.

3. Install piping in concealed locations, unless otherwise indicated and except in equipment rooms and service areas.

4. Install piping indicated to be exposed and piping in equipment rooms and service areas at right angles or parallel to building walls or structure. Diagonal runs are prohibited unless specifically indicated otherwise.

5. Install piping to permit valve servicing.

6. Install piping at indicated slopes.

7. Install piping free of sages and bends.

8. Install fitting for changes in direction and branch connections.

9. Install piping to allow application of insulation.

10. Select system components with pressure rating equal to or greater than system operating pressure.

11. Install escutcheons for penetrations of walls, ceilings and floors according to the following:

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a. New Piping:

1. Piping with fitting or sleeve protruding from wall: One-piece, deep-pattern type.

2. Chrome-Plated Piping: One-piece, cast-brass type with polished chrome-plated finish.

3. Insulating Piping: One-piece, stamped-steel type with spring clips.

4. Bare Piping at Wall and Floor Penetrations in Finished Spaces: One-piece or split-casting, cast-brass type with polished chrome-plated finish.

5. Bare Piping in Unfinished Service Spaces: One-piece, cast-brass type with rough-brass finish.

6. Bare Piping in Equipment rooms: One-Piece, cast-brass type.

7. Bare Piping at Floor Penetrations in Equipment Rooms: One-piece, floor-plate type.

12. Install sleeves for pipes passing through concrete and masonry walls and concrete floor and roof slabs.

a. Cut sleeves to length for mounting flush with both surfaces.

1. Exception: extend sleeves installed in floors of mechanical equipment areas and other wet areas 2 inches above finished floor level. Extend cast-iron sleeve fittings below floor slab as required to secure clamping ring if ring is specified.

b. Install sleeves in new walls and slabs as new walls and slabs are constructed.

c. Install sleeves that are large enough to provide 1/4 inch annular clear space between sleeve and pipe or pipe insulation. Use the following sleeve materials:

1. Steel Pipe Sleeves: For pipes smaller than NPS 6.

2. Steel Sheet Sleeves: For pipes NPS 6 and larger, penetrating gypsum board partitions.

3. Slack Sleeve Fittings: For pipes penetrating floors with membrane waterproofing. Secure flashing between clamping flanges. Install section of cast-iron soil pipe to extend sleeve to 2 inches above finished floor level. Refer to division 7, Section “Sheet Metal Flashing and Trim” for flashing.

d. Except for underground wall penetrations, seal annular space between sleeve and pipe or pipe insulation, using sealants appropriate for size, depth, and location of joint. Refer to division 7, Section “Joint Sealants” for materials and installation.

13. Aboveground, Exterior Wall Pipe Penetrations: Seal penetration using sleeve and mechanical sleeve seals. Select sleeve size to allow for 1 inch annular clear space between pipe and sleeve for installing mechanical sleeve seals.

a. Install steel pipe for sleeves smaller than 6 inches in diameter.

14. Fire-Barrier Penetrations: Maintain indicated fire rating of walls, partitions, ceilings and floors at pipe penetrations. Seal pipe penetrations with firestop materials.

Section 22050- Basic Mechanical Material and Methods Cont.

15. Verify final equipment specifications in other Sections for rough-in requirements.

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B. Piping Joint construction:

1. Join pipe and fittings according to the following requirements and division 22

Sections specifying piping systems.

2. Ream ends of pipes and tubs to remove burrs. Bevel plain ends of steel pipe.

3. Remove scale, slag, dirt, and debris from inside and outside of pipe and fittings before assembly.

4. Solder Joints: Apply ASTM B 813, water-flushable flux, unless otherwise indicated, to tube end. Construct joints according to ASTM B 828 or CDA’s

“Copper Tube Handbook”, using lead-free solder alloy complying with ASTM

B 32.

5. Brazed Joints: Construct joints according to AWS’s “Brazing Handbook”, “Pipe and Tube” Chapter, using copper-phosphorus brazing filler metal complying with AWS A5.8.

6. Threaded Joints: Thread pipe with tapered pipe threads according to ASME

B1.20.1. Cut threads full and clean using sharp dies. Ream threaded pipe ends to remove burrs and restore full ID. Join pipe fittings and valves as follows:

a. Apply appropriate tape or threaded compound to external pipe threads unless dry seal threaded is specified.

b. Damaged Threads: do not use pipe or pipe fittings with threads that are corroded or damaged. Do not use pipe sections that have cracked or open welds.

7. Flanged Joints: Select appropriate gasket material, size, type, and thickness for service application. Install gasket concentrically positioned. Use suitable lubricant on bolt threads.

8. Plastic Piping Solvent-Cement Joints: Clean and dry joining surfaces. Join pipe and fittings according to the following:

a. PVC Pressure Piping: Joint schedule number ASTM D 1785, PVC pipe and

PVC socket fittings according to ASTM D 2672. Join other-than-schedule-number PVC pipe and socket fittings according to ASTM D 2855.

b. PVC Non-pressure Piping: Join according to ASTM D 2855.

C. Piping Connections:

1. Make connections according to the following, unless otherwise indicated:

a. Install unions, in piping NPS 2 and smaller, adjust to each valve and at final connection to each piece of equipment.

b. Install flanges, in piping NPS 2-1/2 and larger, adjacent to flanged valves and at final connection of each piece of equipment.

c. Wet Piping Systems: Install dielectric coupling and nipple fittings to connect piping materials of dissimilar metals.

D. Equipment Installation- Common Requirements:

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1. Install equipment to allow for maximum possible headroom unless specific mounting heights are not indicated.

2. Install equipment level and plumb, parallel and perpendicular to other building systems and components in exposed interior spaces, unless otherwise indicated.

3. Install mechanical equipment to facilitate service, maintenance, and repair or replacement of components. Connect equipment for ease of disconnecting, with minimum interference to other installations. Extend grease fittings to accessible locations.

4. Install equipment to allow right of way for piping installed at required slope.

E. Painting:

1. Painting of mechanical systems, equipment, and components is specified in division 9, Section “Painting”.

2. Damage and Touchup: Repair marred and damaged factory-painted finishes with materials and procedures to match original factory finish.

F. Concrete Equipment Pads:

1. Concrete Equipment Pads: Anchor equipment to concrete equipment pad according to equipment manufacturer’s written instructions and according to seismic codes at Project site.

a. Construct concrete equipment pad of dimensions indicated, but not less than

4 inches larger in both directions than supported unit.

b. Install dowel rods to connect concrete equipment pad to concrete slab.

Unless otherwise indicated, install dowel rods on 18 inch centers around the full perimeter of the base.

c. Install epoxy-coated anchor bolts for supported equipment that extend through concrete equipment pad, and anchor into structural concrete slab.

d. Place and secure anchorage devices. Use supported equipment manufacturer’s setting drawings, templates, diagrams, instructions, and directions furnished with items to be set.

e. Install anchor bolts according to anchor-bolt manufacturer’s written instructions.

f. Use 3000-psi, 28-day compressive-strength concrete and reinforcement as specified in Division3, Section “Cast-in-Place Concrete”.

G. Erection of Metal Support and Anchorages:

1. Refer to Division 5, Section “Metal Fabrications” for structural steel.

2. Cut, fit, and place miscellaneous metal supports accurately in location, alignment, and elevation to support and anchor mechanical materials and equipment.

End of Section- 22050

8 Division 22 - Plumbing

SECTION 22060- HANGERS AND SUPPORTS

A. Summary:

1. This Section includes hangers and supports for mechanical system piping and equipment.

B. Related Sections:

1. Division 22, Section “Water Piping”.

C. Definitions:

1. MSS: Manufacturers Standardization Society for the Value and fittings Industry.

2. Terminology: As defined in MSS Sp-90, “Guidelines on Terminology for piping

Hangers and Supports”.

A. Manufacturers:

1. Available Manufacturers: Subject to compliance with requirements, manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following:

a. Pipe Hangers:

1. AAA Technology and Specialties Co., Inc.

2. B-Line Systems, Inc.

3. National Pipe Hanger Corp.

B. Manufactured Units:

1. Pipe Hangers, Supports, and Components: MSS SP-58, factory-fabricated components. Refer to “Hanger and Support Applications” Article in Part 3 of the

Section for where to use specific hanger and support types.

a. Galvanized, Metallic Coatings: For piping and equipment that will not have field-applied finish.

b. Nonmetallic Coatings: On attachments for electrolytic protection where attachments are in direct contact with copper tubing.

C. Miscellaneous Materials:

1. Structural Steel: ASTM A 36/A 36M, steel plates, shapes, and bars, black and galvanized.

PART 3 – EXECUTION

A. Hanger and Support Applications:

1. Specific hanger requirements are specified in Sections specifying equipment and systems.

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Section 22060- Hangers and Supports Cont.

2. Comply with MSS Sp-69 for pipe hanger selections and applications that are not specified in piping system Specification Sections.

3. Horizontal-piping Hangers and Supports: Unless otherwise indicated and except as specified in piping system Specification Sections, install the following types:

a. Adjustable Steel Clevis Hangers (MSS Type 1): For suspension of noninsulated or insulated stationary pipes.

4. Vertical-Piping Clamps: Unless otherwise indicated and except as specified in piping system Specification Sections, install the following types:

a. Extension Pipe or Riser Clamps (MSS Type 8): for support of pipe risers.

b. Carbon-or Alloy-Steel Riser Clamps (MSS Type 42): For support of pipe risers if longer ends are required for riser clamps.

5. Building Attachments: Unless otherwise indicated and except as specified in piping system Specification Sections, install the following types:

a. Top-Beam C-Clamps (MSS Type 19): For use under roof installation with bar joist construction to attach to top flange of structural shape.

b. Side-Beam or Channel Clamps (MSS Type 20): For attaching to bottom flange of beams, channels, or angles.

c. Center-Beam Clamps (MSS Type 21): For attaching to center of bottom flange of beams.

d. C-Clamps (MSS Type 23): For attaching to structural shapes.

e. Top-Beam Clamps (MSS Type 25): For attaching to top of beams if hanger rod is required tangent to flange edge.

f. Side-Beam Clamps (MSS Type 27): For attaching to bottom of steel I-Beams.

g. Malleable Beam Clamps with Extension Pieces (MSS Type 30): For attaching to structural steel.

6. Saddles and Shields: Unless otherwise indicated and except as specified in piping system Specification Sections, install the following types:

a. Steel Pipe-Covering Protection Saddles (MSS Type 39): To fill interior voids with insulation that matches adjoining insulation.

b. Protection Shields (MSS Type 40): Of length recommended by manufacturer to prevent crushing insulation.

B. Hanger and Support Installation:

1. Pipe hanger and Support Installation: Comply with MSS SP-69 and MSS SP-

89. Install hangers, supports, clamps, and attachments as required to properly support piping from building structure.

2. Attach to structural steel. Space attachments within maximum piping span length indicated in MSS SP-69. Install additional attachments at concentrated loads, including valves, flanges, guides, strainers, and expansion joints, and at changes in direction of piping.

3. Install hangers and supports complete with necessary inserts, bolts, rods, nuts, washers, and other accessories.

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4. Install hangers and supports to allow controlled thermal movement of piping systems, to permit freedom of movement between pipes and anchors, and to facilitate action of expansion joints, expansion loops, expansion bends, and similar units.

5. Load Distribution: Install hangers and supports so that piping live and dead loads and stresses from movement will not be transmitted to connected equipment.

6. Pipe Slopes: Install hangers and supports to provide slope indicated, or as required by Code, and so maximum pipe deflections allowed by ASME B31.9, “Building Services Piping,” is not exceeded.

7. Insulated Piping: Comply with the following:

a. Attach clamps and spacers to piping.

1. Piping operating above ambient air temperature: Clamp may project through insulation.

2. Piping operating below ambient air temperature: Use thermal-hanger shield insert with clamp sized to match O.D. of insert.

3. Do not exceed pipe stress limits according to ASME B31.9.

b. Install MSS SP-58, Type 39 protection saddles if insulation without vapor barrier is indicated or installed. Fill interior voids with insulation that matches adjoining insulation.

1. Option: Thermal-hanger shields may be used. Include steel weight-distribution plate for pipe NPS 4 and larger, if pipe is installed on rollers.

c. Install MSS SP-58, Type 40 protective shields on cold piping with vapor barrier. Shield will span arc of 180 degrees.

1. Option: Thermal-hanger shield inserts may be used. Include steel weight-distribution plate for pipe NPS 4 or larger of pipe is installed on rollers.

d. Shield Dimensions for Pipe: Not less than the following:

1. 12 inches long and 0.048 inch thick.

e. Insert Material: Length at least as long as protective shield.

f. Thermal-Hanger Shields: Install with insulation same thickness as piping insulation.

C. Equipment Supports

1. Fabricate structural-steel stands to suspend equipment from structure above.

D. Metal Fabrication:

1. Cut, drill, and fit miscellaneous metal fabrications for equipment supports.

2. Fit exposed connections together to form only hairline joints. Field-weld connection that cannot be shop-welded because of shipping size limitations.

3. Field Welding: Comply with AWS D1.1 procedures for shielded metal arc welding, appearance quality of welds, and methods used in correcting welding work, and with the following:

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a. Use materials and methods that minimize distortion and develop strength and corrosion resistance of base metals.

b. Obtain fusion without undercut or overlap.

c. Remove welding flux immediately.

d. Finish welds at exposed connections so no roughness shows after finishing and contours of welded surfaces match adjacent contours.

E. Adjusting:

1. Hanger Adjustment: Adjust hangers to distribute loads equally on attachments and to achieve required slope of pipe.

F. Painting:

1. Touching Up: Cleaning and touchup painting of field welds, bolted connections, and abraded areas of shop paint on miscellaneous metal are specified in Division 9, Section “Painting”.

2. Galvanized Surfaces: Clean welds, bolted connections, and abraded areas, apply galvanizing-repair paint to comply with ASTM A 780.

End of Section- 22060

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SECTION 22075- MECHANICAL IDENTIFICATION

D. Summary:

2. This Section includes the following mechanical identification materials and their installation:

a. Equipment nameplates.

b. Equipment markers.

c. Access panel and door markers.

d. Pipe markers.

e. Duct markers.

f. Valve tags.

g. Warning tags.

E. Quality Assurance:

1. ASME Compliance: ASME A13.1, “Scheme for the Identification of Piping

Systems”, for letter size, length of color field, colors, and viewing angles of identification devices for piping.

2. Adhesives will meet or exceed the VOC limits of South Coast Air Quality

Management District Rule #1168. Sealants use as a filler must meet or exceed Bay

Area Air Resources Board Reg. 8, Rule 51.

F. Coordination:

a. Coordinate installation of identifying devices with completion of covering and painting of surfaces where devices are to be placed.

b. Coordinate installation of identifying devices with location of access panels and doors.

c. Install identifying devices before installing acoustic ceilings and similar concealment.

D. Equipment Identification Devices:

1. Equipment Nameplates: Metal, with data engraved or stamped, for permanent attachment on equipment.

a. Data:

1. Manufacturer, product name, model number, and serial number.

2. Capacity, operating and power characteristics, and essential data.

3. Labels of tested compliance.

2. Equipment Markers: engraved, color-coded, laminated plastic. Include contact-type, permanent adhesive.

a. Terminology: Match schedules as closely as possible.

b. Data:

1. Name and plan number.

2. Equipment service.

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Section 22075- Mechanical Identification Cont.

3. Design capacity.

4. Other design parameters such as pressure drop, entering and egress conditions, and speed.

c. Size: 2-1/2 by 4 inches for control devices, dampers, and valves, 4-1/2 by 6 inches for equipment.

3. Access Panel and Door Markers: 1/16 inch thick, engraved laminated plastic, with abbreviated terms and numbers corresponding to identification. Provide 1/8 inch center hole for attachment.

a. Fasteners: Self-tapping, stainless-steel screws or contact-type, permanent adhesive.

E. Piping Identification Devices:

1. Manufactured Pipe Markers, General: Pre-printed, color-coded, with lettering indicating service, and showing direction of flow.

a. Colors: Comply with ASME A13.1, unless otherwise indicated.

b. Letter: Use piping system terms indicated and abbreviate only as necessary for each application length.

c. Pipes with OD, Including Insulation: Full-band pipe markers extending 360 degrees around pipe at each location.

d. Arrows: Integral with piping system service lettering to accommodate both directions; or as separate unit on each pipe marker to indicate direction of flow.

2. Self-Adhesive Pipe Markers: Plastic with pressure-sensitive, permanent-type, self-adhesive back.

3. Plastic Tape: Continuously printed, vinyl tape at least 3 mils thick with pressure-sensitive permanent-type, self-adhesive back.

a. Width of Markers on pipes with OD, including insulation: 3/4 inch minimum.

F. Piping Identification:

1. All applicable exposed piping will be painted in accordance with ANSI/ASME

A13.1- 2007, Standard for the Identification of Pipes. “Applicable” is defined by any piping contained in the referenced list.

G. Duct Identification Devices:

1. Duct Markers: engraved, color-coded laminate plastic. Include direction and quantity of airflow and duct service (such as supply, return, and exhaust). Include contact-type, permanent adhesive.

H. Valve Tags:

1. Valve Tags: Stamped or engraved with 1/4 inch letters for piping system abbreviation and 1/2 inch numbers, with numbering scheme. Prove 5/32 inch center-hole for fastener.

a. Material: 0.032 inch thick brass.

b. Valve-Tag Fasteners: Brass wire-link or beaded chain; or S-hook.

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I. Warning Tags:

1. Warning Tags: Pre-printed or partially pre-printed, accident-prevention tags; of plasticized card stock with matte finish suitable for writing.

a. Size: Approximately 4 by 7 inches.

b. Fasteners: Brass grommet and wire.

c. Nomenclature: Large-size primary caption such as DANGER, CAUTION, or

DO NOT OPERATE.

d. Color: Yellow background with black lettering.

G. Applications, General:

1. Products specified are for applications referenced in other Division22 Sections. If more than single-type material, device, or label is specified for listed applications, selection is installer’s option.

H. Equipment Identification:

1. Install and permanently fasten equipment nameplates on each major item of mechanical equipment that does not nameplate or has nameplate that is damaged or located where not easily visible. Locate nameplates where accessible and visible. Include nameplates for the following general categories of equipment:

a. Fuel-burning units, including heaters.

b. Pumps and similar moto -driven units.

c. Heat recovery units and similar equipment.

d. Fans.

e. HVAC equipment.

2. Install equipment markers with permanent adhesive on or near such major item of mechanical equipment. Data for markers may be included on signs, and markers may be omitted if both are indicated.

a. Letter Size: Minimum 1/4 inch for name of units if viewing distance is less than 24 inches, 1/2 inch for viewing distances up to 72 inches, and proportionately larger lettering for greater viewing distances. Include secondary lettering two-thirds to three-fourths the size of principal lettering.

b. Data: Distinguish among multiple units, indicate operational requirements, indicate safety and emergency precautions, warn of hazards and improper operations, and identify units.

c. Locate markers where accessible and visible. Include markers for the following general categories of equipment:

1. Fuel-burning units including heaters.

2. Pumps and similar motor-driven units.

3. Heat recovery units and similar equipment.

4. Fans.

5. HVAC equipment.

3. Install access panel markers with screws on equipment access panels.

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I. Piping Identification:

1. Install manufactured pipe markers indicating service on each piping system. Install with flow indication arrows showing direction of flow.

a. Pipes with OD, Including Insulation: Self-adhesive pipe markers. Use color-coded, self-adhesive plastic tape, at least 3/4 inch wide, lapped at least 1-1/2 inches at both ends of pipe marker, and full circumference of pipe.

2. Locate pipe markers and color bands where piping is exposed and finished spaces and accessible maintenance spaces, as follows:

a. Near each valve and control device.

b. Near each branch connection, excluding short takeoffs for fixtures. Where flow pattern is not obvious, mark each pipe at branch.

c. Near penetration through walls, floors, ceilings, and nonaccessible enclosures.

d. At access points that permit view of concealed piping.

e. Near major equipment items and other points of origin and termination.

f. Spaced at maximum intervals of 25 feet along each run.

g. On piping above removable acoustic ceilings. Omit intermediately spaced markers.

J. Duct Identification:

1. Install duct markers with permanent adhesive on air ducts in the following color codes:

a. Green: for cold-air ducts.

b. Yellow: for hot-air ducts.

c. Blue: For exhaust, outside, return, and mixed-air ducts.

d. ASME A13.1 Colors and Designs: For hazardous material exhaust.

e. Letter Size: Minimum 1/4 inch for name of units if viewing distance is less than 24 inches, 1/2 inch for viewing distances up to 72 inches, and proportionately larger lettering for greater viewing distances. Include secondary lettering two-thirds to three-fourths the size of principal lettering.

2. Locate markers near points where ducts enter into concealed spaces and at maximum intervals of 50 feet in each space where ducts are exposed or concealed by removable ceiling panels.

K. Warning-Tag Installation:

1. Write required message on, and attach warning tags to equipment and other items where required in the specification.

L. Adjusting and Cleaning:

1. Relocate mechanical and piping identification materials and devices that have become visually blocked by other Work.

2. Clean faces of mechanical and piping identification devices.

End of Section- 22075

16 Division 22 - Plumbing

SECTION 22110- VALVES

G. Summary:

3. This Section includes the following general-duty valves:

a. Copper-alloy ball valves.

b. Bronze check valves.

c. Bronze gate valves.

d. Bronze globe valves.

H. Related Sections:

2. Division 22, piping Sections for specialty valves applicable to those Sections only.

3. Division 22, Section “Mechanical Identification”.

I. Definitions:

3. The following are standard abbreviations for valves:

a. CWP: Cold working pressure.

b. PTFE: Polytetrafluoroethylene plastic.

c. TFE: Tetrafluoroethylene plastic.

J. Quality Assurance:

3. ASME Compliance: ASME B31.9 for building services piping valves.

a. Exceptions: Domestic hot and cold-water piping valves unless referenced.

4. ASME compliance for Ferrous Valves: ASME B16.10 and ASME B16.34 for dimensions and design criteria.

5. NSF Compliance: NSF 61 for valve materials for potable-water service.

K. Delivery, Storage, and Handling:

1. Prepare valves for shipping as follows:

a. Protect internal part against rust and corrosion.

b. Protect threads.

c. Set gate and globe valves closed to prevent rattling.

d. Set ball valves open to minimize exposure of functioning surfaces.

e. Block check valves in either closed or open position.

2. Use the following precautions during storage:

d. Maintain protection of valves ends.

e. Store valves indoors and maintain at dew-point temperature higher than ambient dew-point temperature. If outdoor storage is necessary, store valves off the ground in watertight enclosures.

J. Valves, General:

4. Refer to Part 3 “Valve Applications” Article, this Section.

Section 22110- Valves Cont.

17 Division 22 - Plumbing

5. Bronze Valves: NPS 2 and smaller with threaded ends, unless otherwise indicated.

6. Valve Pressure and Temperature Ratings: Not less than indicated and as required for system pressures and temperatures.

7. Valve Sizes: Same as upstream piping, unless otherwise indicated.

8. Extend Valve Stems: On insulated valves.

K. Copper-Alloy Ball Valves:

4. Copper-Alloy Ball Valves, General: MSS SP-110.

5. Two-Piece, coper-Alloy Ball Valves: Brass or bronze body with full-port, chrome-plated bronze ball; PTFE or TFE seats; and 600 psig minimum CWP rating and blowout-proof stem.

L. Bronze Check Valves:

1. Bronze Check Valves, General: MSS SP-80.

2. Type 3, Class 150, Bronze Gate Valves: Bronze body with rising stem and bronze solid wedge.

M. Bronze Gate Valve:

1. Bronze Gate Valves, General: MSS SP-80, with ferrous-alloy handwheel.

2. Type 2, Class 150, Bronze Gate Valves: Bronze body with rising stem and bronze solid wedge.

N. Bronze Globe Valves:

1. Bronze Globe Valves, General: MSS SP-80, with ferrous-alloy handwheel.

2. Type 2, Class 150, Bronze Globe Valves: Bronze body with PTFE or TFE disc.

M. Examination:

3. Examine piping system for compliance with requirements for installation tolerances and other conditions affecting performance.

a. Proceed with installation only after unsatisfactory conditions have been corrected.

4. Examine valve interior for cleanliness, freedom from matter, and corrosion.

Remove special packing materials, such as blocks used to prevent disc movement during shipping and handling.

5. Operate valves in positions from fully open to fully closed. Examine guides and seats made accessible by such operations.

6. Do not attempt to repair defective valves; replace with new valves.

N. Valve Applications:

1. Refer to piping Sections for specific valve applications. If valve applications are not indicated, use the following:

a. Shutoff Service: Ball or gate valves.

b. Throttling Service: Ball or globe valves.

18 Division 22 - Plumbing

2. If valves with specified SWP classes or CWP ratings are not available, the same types of valves with higher SWP class or CWP ratings may be substituted.

3. Low-Pressure, Compressed-Air Piping: Use the following types of valves:

a. Ball Valves, NPS 2 and smaller: Two-piece, 400 psig CWP rating, copper-alloy.

b. Gate Valves, NPS 2 and smaller: Type 2, Class 150, bronze.

c. Globe Valves, NPS 2 and smaller: Type 2, Class 150, bronze.

4. Domestic and Reuse water Piping: Use the following types of valves:

a. Ball Valves, NPS 2 and smaller: Two-piece, 400 psig CWP rating, copper-alloy.

b. Swing Check Valves, NPS 2 and smaller: Type 3, Class 150, bronze.

c. Gate Valves, NPS 2 and smaller: Type 2, Class 150, bronze.

d. Globe Valves, NPS 2 and smaller: Type 2, Class 150, bronze.

5. Heating water Piping: Use the following types of valves:

a. Ball Valves, NPS 2 and smaller: Two-piece, 400 psig CWP rating, copper-alloy.

b. Swing Check Valves, NPS 2 and smaller: Type 3, Class 150, bronze.

c. Gate Valves, NPS 2 and smaller: Type 2, Class 150, bronze.

d. Globe Valves, NPS and smaller: Type 2, Class 150, bronze.

6. Select valves with the following end connections:

a. For copper Tubing, NPS 2 and smaller: Solder-joint or threaded ends.

O. Valve Installation:

1. Piping installation requirements are specified in other Division 22 Sections.

Drawings indicate the general arrangement of fixtures, and other specialties.

2. Install valves with unions at each piece of equipment arranged to allow maintenance, and equipment removal without system shutdown.

3. Locate valves for easy access and provide separate additional support where necessary.

4. Install valves in horizontal piping with stem at or above center of pipe.

5. Install valves in position to allow full stem movement.

6. Install check valves fir proper direction of flow and as follows:

a. Swing Check Valves: In horizontal position with hinge pin level.

P. Joint Construction:

1. Refer to Division 22, Section “Basic Mechanical Materials and Methods” for basic piping joint construction.

2. Solder Joints: Use ASTM B 813, water-flushable, lead-free flux; ASTM B 32, lead-free-alloy solder; and ASTM B 828 procedure, unless otherwise indicated.

Q. Adjusting:

19 Division 22 - Plumbing

2. Adjust or replace valve packing after piping systems have been tested and put into service but before final adjusting and balancing. Replace valves if persistent leaking occurs.

End of Section- 22110

20 Division 22 - Plumbing

SECTION 22131- FACILITY SANITARY SEWERS

01 - Scope

The work covered by this section of the specifications consists of furnishing all plant, labor, equipment, supplies and materials and in performing all operations in connection with the construction of applicable sanitary sewer lines in accordance with the contract drawings and specifications.

02 - Materials (General)

All pipe and accessories supplied for use on the project shall be as specified herein.

Where referenced specifications (ASTM, AWWA, etc.) are mentioned, these standards are deemed to be the minimum standard of quality of materials or methods to apply to this project.

All pipe, fittings and jointing materials shall be of one manufacturer unless different types are shown on the drawings or otherwise accepted by the COR. Where special fittings or joints are required, such as adapters for joining different pipe materials, they shall be accepted by the COR.

Copies of the manufacturer's direction for handling and installing the particular pipe supplied and accepted by the COR shall be furnished to the COR at the first delivery of pipe to the project in numbers that will permit the COR to retain three copies. The manufacturer's instructions shall be strictly followed unless a conflict exists between the manufacturer's instruction and those contained herein. In such cases, the COR shall determine which methods are to be followed and no pipe shall be installed until the

Contractor has received written instruction from the COR as to which procedure to follow.

Where pipe enters manholes, the pipe manufacturer shall certify that their pipe is compatible with the watertight, flexible seal to be used at manhole openings.

03 – Sewer Pipe

a. PVC (POLYVINYL-CHLORIDE) SEWER PIPE a.1 Pipe

PVC pipe 4 inch through 15 inch diameter supplied for use on this project shall be type PSM Polyvinyl Chloride (PVC) Sewer Pipe as specified per ASTM D 3034-81.

PVC pipe 18 inch through 27 inch diameter shall be as specified in ASTM F 678-80.

21 Division 22 - Plumbing

The pipe shall be made of PVC plastic having a cell classification of 12454-B or 12454-C as defined in ASTM D 1784-81 and shall be homogeneous throughout, free of cracks, holes, foreign inclusions or other injuries defects. The pipe shall be uniform in color, wall thickness, density and other physical properties.

Section 22131- Facility Sanitary Sewers Cont.

The maximum laying length for all PVC pipe supplied shall be 13.0 + or - feet. Wall thickness shall be SDR-35 per ASTM D 3034-81 or wall thickness T-1 per ASTM F 679-80. Marking and identification of pipe shall be per

ASTM D 3034-81 or ASTM F 679-80 as applicable.

a.2 Fittings

PVC fittings supplied for use on this project shall meet all physical and quality requirements as hereinbefore specified for PVC pipe. PVC fittings shall be those as manufactured by or supplied by the manufacture of the pipe. PVC fittings for 4 inch through 15 inch diameter pipe shall meet the dimensional requirements of the tables as shown in ASTM D 3034-81 except that saddle type wyes or tee branches shall not be allowed for use on new sewer mains. Where 90 degrees bends are used, they shall be the long radius type. PVC fittings for 15 inch through 27 inch diameter pipe shall conform to the requirements of ASTM F 679-80.

a.3 Joints

Joints for PVC pipe and fittings for sanitary sewer lines shall be the "Push-On

Type" composed of elastomeric ring gaskets compressed in the annular space between a bell end or socket and spigot end of the pipe. All surfaces of the bell, socket or spigot end of the pipe against which the ring gasket may bear shall be smooth, free of cracks or other imperfections that could adversely affect the sealing capacity of the joint.

Lubricant for use in assembling joints shall be supplied with the pipe or be of the specific manufacturer as recommended by the pipe manufacturer for use with the specific pipe supplied. The lubricant shall not cause deterioration of either the elastomeric ring gasket or pipe material.

Where PVC pipe and fittings are connected to piping of other materials, the manufacturers standard adapters or transition pieces shall be used.

b. Ductile Iron Sewer Pipe b.1 General

This Specification covers 4 to 54 inch iron ductile iron gravity sewer pipe designated "DI" on the Drawings. Pipe furnished under this Specification shall comply

22 Division 22 - Plumbing with all provisions of ANSI/ASTM A 746-77. Maximum design thickness shall be based on depth of cover, trench loadings and other conditions per ANSI/AWWA C151/A21.51.

b.2 Joints

Pipe joints shall be mechanical joint or rubber ring slip joint.

Mechanical joints are to be furnished according to ASNA/AWWA

C111/A21.11-80. All pipe joints must be furnished complete with all accessories.

Mechanical joint bolts and nuts shall be of alloy steel cast iron or alloy steel (Corten type such as U.S. Alloy) or equal. Rubber gaskets shall be made of plain first grade rubber, free of imperfections and porosity.

Section 22131- Facility Sanitary Sewers Cont.

Hardness shall be 70 to 75 durometer.

Rubber ring slip joints shall be equal to ANSI/AWWA C111/A21.11-80. The type of joint for ductile iron sewer pipe shall be as shown on the Drawings. Where no specific type joint is shown, the joint shall be the slip joint type with rubber ring gasket.

b.3 Mechanical Joint and Rubber Ring Slip Joint Fittings for Ductile Iron Pipe

Ductile iron mechanical and rubber ring slip fittings shall conform to

ANSI/AWWA C110/A21.10-82 for gray iron and ductile iron fittings. Mechanical Joints and rubber slip ring joints shall also conform in all respects to ANSI/AWWA

C111/A21.11-80.

All fittings shall be manufactured for the size and pressure class of the pipeline in which they are to be used. All fittings shall be furnished complete with all joint accessories.

PART 3 - EXECUTION

04 - Installation

a. Before sewer pipe is placed in position in the trench, the bottom and sides of the trench shall be carefully prepared and any necessary bracing and sheeting installed as provided in these specifications.

b. Water shall be allowed to run or stand in the trench while pipe laying is in progress, before the joint has completely set, or before the trench has been backfilled. The

Contractor shall not open up at any time more trench than his available pumping facilities are able to dewater.

c. Trench bottoms found to be unsuitable for foundations after pipe laying operations have started shall be corrected and brought to exact line and grade with compacted crushed stone (K.D.O.T. #9).

23 Division 22 - Plumbing

d. Each piece of pipe and special fitting shall be carefully inspected before it is placed, and no defective pipe shall be laid in the trench. Pipe laying shall proceed up grade starting at the lower end of the grade and with the bells up grade.

e. Wyes and Tees. Wyes and tee branches shall be installed in the sanitary sewer lines so as properly serve each lot facing or abutting on the street or alley in which the sewer is being laid, and at such other locations as may be designated by the COR. Such branches shall be closed with plugs adequately braced to withstand test pressure. All tees and wyes shall be adequately marked so that it may be easily found prior to future excavation.

Use a 6' metal fence post.

For all wyes that are plugged and laid in rock, the Contractor will blast a minimum of

6 L.F. of ditch line in the direction and to the approximate grade of the future lateral as directed by the COR, but will not excavate the material. This shall be done at no extra cost to the Government. A record of the exact location of each wye installed will be furnished to the COR.

If the work consists of the construction of a sewer that is to replace an existing sewer, all of the existing service lines shall be connected to the new line after testing of the new line.

f. As the work progresses, the interior of the pipe in place shall be thoroughly cleaned.

On small pipe, a swab or drag shall be kept in the pipe line and pulled forward past each joint immediately after it has been made. After each line of pipe has been laid, it shall be carefully inspected and all earth, trash, rags and other foreign matter removed from the interior.

g. Backfilling shall be performed in the manner provided in these specifications.

Bedding shall be as specified on the detail sheet of the contract drawings.

h. Crossing above Water Lines. Where sewers cross above water lines, the sewer pipe for a distance of ten feet each side of the crossing shall be encased in concrete.

05 - Connections

a. Connections shall be made to all existing sewer lines, as shown on the plans or directed by the COR. Connections shall be made by removing a section of the sewer from the existing line and inserting in the space, a wye branch of proper size, or by construction of a manhole, junction box, regular chamber, or other structures as shown on the plans.

b. Connections to existing manholes or inlets shall be made by cutting a hole in the wall of existing structure, inserting a length of sewer pipe into the hole, filling around same with concrete or mortar toweling the inside and outside surfaces of the joint to a neat finish. As specified elsewhere, the bottom of the manholes shall be shaped or reshaped

24 Division 22 - Plumbing as necessary to fit the invert of the sewer pipe.

c. Jointing of Dissimilar Pipe. Jointing of dissimilar pipe shall be accomplished by using suitable, adapter couplings. Where adapter couplings are not available, the jointing shall be accomplished with a special fabricated coupling or concrete encasement block, as approved by the COR.

06 – Existing Utilities

a. All existing sewers, water lines, gas lines, sidewalks, curbs, gutters, pavements, electric lines, or other utilities or structures in the vicinity of the work shall be carefully protected by the Contractor from damage at all times. Where it is necessary for the proper accomplishment of the work to repair, remove and/or replace any such utilities or structures, the work shall be done under the provisions set forth in the

General Conditions of these contract documents. Any such work to be done at the

Contractors expense shall be considered as incidental to the construction of pipe sewers and no additional payment therefore will be allowed.

b. Water and gas service connections will be repaired or replaced by the Contractor at his expense as an incidental part of the work.

07 – Testing Sewers

a. The Contractor will furnish all equipment and facilities and all personnel for conducting the tests. The tests shall be observed by a representative of the Government.

An air test and a deflection test will be made after all services tee wyes have been installed and backfilling has been completed and compacted.

All ties and end of sewer services shall be plugged with flexible joint plugs or caps securely fastened to withstand the internal test pressures. Such plug or cap shall be readily suitable for making a flexible jointed lateral connection or extension.

Prior to air testing, the pipe will be checked to see that it is clean. If not, it shall be cleaned by passing through the pipe a full gauge squeegee. It shall be the Contractor's responsibility to have the pipe clean.

Immediately following this check or cleaning, the pipe installation shall be tested with low-pressure air. Air shall be slowly supplied to the plugged pipe installation until the internal air pressure reaches 4.0 pounds per square inch greater than the average back pressure of any ground water that may submerge the pipe. At least two minutes shall be allowed for the temperature stabilization.

The pipe line shall be considered acceptable when tested at an average back pressure

25 Division 22 - Plumbing of 3.0 pounds per square inch greater than the average back pressure of any ground water that may submerge the pipe, if (1) the test of air loss from any section tested in its entirety between manholes does not exceed 2.0 cubic feet per minute, or (2) the section under test does not lose air at a rate of greater than 0.0030 feet per minute per square foot of internal pipe surface.

The requirements of this specification shall be considered satisfied if the time required in seconds for the pressure to decrease from 3.5 to 2.5 pounds per square inch is greater than that shown in the "Allowed Time Table" listed below.

If the…