Amend 0004_11 01 00.pdf

Climatic Cold Chambers Rev. 2020-05-05 Cold Regions Research and Engineering Laboratory (CRREL)

SECTION 11 01 00

MODULAR OFFICE AND RESTROOM/SHOWER

03/19

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

AMERICAN SOCIETY OF HEATING, REFRIGERATING AND AIR-CONDITIONING

ENGINEERS (ASHRAE)

ASHRAE 62.1 (2013) Ventilation for Acceptable Indoor Air Quality

ASHRAE 90.1 - IP (2016) Energy Standard for Buildings Except Low-Rise Residential Buildings

AMERICAN SOCIETY OF SANITARY ENGINEERING (ASSE)

ASSE 1018 (2001) Performance Requirements for Trap Seal Primer Valves - Potable Water Supplied (ANSI Approved 2002

ASSE 1037 (2015; Reprint Sep 2017) Performance Requirements for Pressurized Flushing Devices for Plumbing Fixtures

ASSE 1052 (2016) Performance Requirements For Hose Connection Backflow Preventers

ASSE 1072 (2007) Performance Requirements for Barrier Type Floor Drain Trap Seal Protection Devices

ASSOCIATED AIR BALANCE COUNCIL (AABC)

AABC MN-1 (2002; 6th ed) National Standards for Total System Balance

ASTM INTERNATIONAL (ASTM)

ASTM B88 (2016) Standard Specification for Seamless Copper Water Tube

INTERNATIONAL CODE COUNCIL (ICC)

ICC A117.1 COMM (2017) Standard And Commentary Accessible and Usable Buildings and Facilities

ICC IMC (2015) International Mechanical Code

ICC IPC (2015) International Plumbing Code

SECTION 11 01 00 Page 1

NATIONAL ENVIRONMENTAL BALANCING BUREAU (NEBB)

NEBB PROCEDURAL STANDARDS (2015) Procedural Standards for TAB (Testing, Adjusting and Balancing) Environmental Systems

SHEET METAL AND AIR CONDITIONING CONTRACTORS' NATIONAL ASSOCIATION

(SMACNA)

SMACNA 1780 (2002) HVAC Systems - Testing, Adjusting and Balancing, 3rd Edition

UNDERWRITERS LABORATORIES (UL)

UL 1598 (2008; Reprint Oct 2012) Luminaires

1.2 GENERAL REQUIREMENTS

The Contractor shall provide a modular office and unisex restroom/shower enclosure as specified herein and as shown on the drawings and coordinated with other trades for a complete installation.

1.3 DESCRIPTION OF WORK

The work includes furnishing and installing a modular office and unisex restroom/shower enclosure including equipment and all related work necessary to provide a complete installation. Verify existing dimensions, site conditions, and required utility connections prior to commencement of work. Coordinate delivery of components with finished openings and other vertical handling limitations within the building. Advise the Contracting Officer of discrepancies prior to procurement and installation of equipment. Submit Contractor's Field Verification Data prior to the preconstruction meeting.

Provide rough-in and utility connections to equipment in accordance with requirements specified in other sections of this specification.

Coordinate physical dimensions, capacities, manufacturer's instructions, and other requirements of the equipment furnished.

1.3.1 Design Requirements

The modular enclosures must meet the following design requirements:

a. Comply with requirements for use by the physically handicapped in accordance with ICC A117.1 COMM .

b. Office and restroom/shower modules shall occupy a 20'x24'space.

c. Provide building envelope to include wall, roof, and floor to comply with ASHRAE 90.1 - IP standards, including R-19 c.i.

(continuous-insulation) walls, R-30 c.i. roof, R-38 floor. Roof shall have a walkable surface for support and service of HVAC equipment.

d. Single insulated door at entrance to office enclosure, and single insulated door entrance to restroom/shower enclosure, in accordance with ICC A117.1 COMM . Internal closet with non-insulated door for water heater, and internal enclosure with access doors for electrical panel. External insulated plumbing drain service enclosure, with insulated access doors and insulated extension skirt to enclose drain

SECTION 11 01 00 Page 2 piping to the building floor.

e. External entrance ramp and landing to doors, compliant with requirements for use by the physically handicapped in accordance with ICC A117.1 COMM to include hand and guardrails .

f. Plumbing in the restroom/shower module, accessible in accordance with ICC A117.1 COMM , including water closet, lavatory, shower, floor drain, and indirect waste receptor, with electric water heater in closet.

g. HVAC in the office module and the restroom/shower module, including heating, air conditioning, and ventilation with energy recovery.

h. Provide power panel inside the office module for use by the office module and the and restroom/shower module.

i. Provide interior electrical outlets and lighting in the office module and the restroom/shower module.

1.4 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. Submittals with an "S" are for inclusion in the Sustainability eNotebook, in conformance with Section 01 33 29 SUSTAINABILITY REPORTING. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-01 Preconstruction Submittals

Contractor's Field Verification Data; G

Tab Firm; G

SD-02 Shop Drawings

Manufacturer's Detail Drawings; G, AE

Custom Fabricated Equipment; G, AE

Installation Instructions and Diagrams; G, AE

SD-03 Product Data

Modular Office Enclosure; G, AE

Modular Restroom/Shower Enclosure; G, AE

SD-05 Design Data

Manufacturer's Descriptive and Technical Literature; G, AE

SD-06 Test Reports

Manufacturer's Test Data; G

Field Test Reports; G

SECTION 11 01 00 Page 3

Testing, Adjusting, And Balancing; G

SD-07 Certificates

UL Certification

SD-08 Manufacturer's Instructions

Manufacturer's Instructions for Shipping, Handling, Storage, Installation, and Start-Up.

SD-10 Operation and Maintenance Data

Operation And Maintenance Manuals; G

SD-11 Closeout Submittals

Manufacturer's Warranty

Contractor's Warranty for Installation

List Of Authorized Local Service And Repair Entities; G

1.5 DESIGN DRAWINGS

Submit detail drawings for all enclosures and accessories. Drawings must be 1/4 inch scale minimum.

Submit a complete Modular Office Enclosure and Modular Restroom/Shower Enclosure Schedule, material data, and drawings as specified. Provide detail drawings showing complete wiring, piping, and schematic diagrams, and any other details required to demonstrate that the system is coordinated and properly functions as a unit. Drawings must show proposed layout and anchorage of equipment and appurtenances, and equipment relationship to other parts of the work, including clearances for maintenance and operation.

a. Detail drawings by Contractor must be separate drawings and be the Contractor's standard sheet size, but not smaller than the contract drawings, indicating wall assemblies with itemized schedule, special conditions drawings indicating size and location of slab depressions, cores, wall openings, blockouts, ceiling pockets, blocking grounds, ceiling access panels, rough-in plumbing/mechanical systems and rough-in electrical systems. Access ramp, step and landing assemblies with hand and guard rails shall be indicated in the drawings.

b. Detail drawings by manufacturer must be separate drawings;

manufacturer's standard size and indicate item number, name, and quantity, construction details, sections, and elevations, adjacent walls, columns, and equipment, plumbing and electrical schematics, and fabricated fixtures with single electrical or plumbing connection, and service access panels required for maintenance or replacement of mechanical or electrical components.

1.6 SHOP DRAWINGS

Submit manufacturer's detail drawings and custom fabricated equipment drawings for each enclosure. Include insulation details, utility

SECTION 11 01 00 Page 4 connections, and installation instructions and diagrams. Base shop drawings on verified field measurements and include contractor's field verification data.

Plumbing: Detail drawings consisting of schedules, performance charts, instructions, diagrams, and other information to illustrate the requirements and operations of systems that are not covered by the Plumbing Code. Detail drawings for the complete plumbing system including piping layouts and locations of connections ; dimensions for roughing-in, foundation, and support points; schematic diagrams and wiring diagrams or connection and interconnection diagrams. Detail drawings shall indicate clearances required for maintenance and operation. Where piping and equipment are to be supported other than as indicated, details shall include loadings and proposed support methods. Mechanical drawing plans, elevations, views, and details, shall be drawn to scale.

1.7 QUALITY ASSURANCE

1.7.1 Standard Products

Materials and equipment must be the standard products of manufacturer regularly engaged in the manufacture of the products and be essentially duplicate items that have been in satisfactory use for at least 2 years prior to bid opening. Applications must be for equipment and materials under similar circumstances and of similar size. When two or more of the same products are supplied they must be products of one manufacturer.

Equipment must be supported by a service organization that is, in the opinion of the Contracting Officer, reasonably convenient to the site.

1.7.2 Alternative Qualifications for Plumbing and HVAC Only

Products having less than a two-year field service record will be acceptable if a certified record of satisfactory field operation for not less than 6000 hours, exclusive of the manufacturer's factory or laboratory tests, can be shown.

1.7.3 Service Support for Plumbing and HVAC Only

The equipment items must be supported by service organizations. Submit a certified list of qualified permanent service organizations for support of the equipment which includes their addresses and qualifications. These service organizations must be reasonably convenient to the equipment installation and able to render satisfactory service to the equipment on a regular and emergency basis during the warranty period of the contract.

1.7.4 Nameplates

Provide each item of equipment bearing a stainless steel, aluminum, or engraved polyester nameplate, as standard with the manufacturer, located in a conspicuous position and permanently fastened to the equipment. Make name or identification plates the size standard with the manufacturer for the particular piece of equipment provided. Name plates must indicate the name of the manufacturer/trade name, serial number, make, and model number, pertinent ratings, operating characteristics, and other information as standard with the manufacturer, date of manufacture, electrical characteristics, and other applicable data, such as flow rate, temperature, pressure, capacity, and material of construction. Securely

SECTION 11 01 00 Page 5 fasten separate equipment identification plates with the contract number marked thereon, to the surface of each piece of equipment.

1.7.5 Pre-Installation Conference

Thirty days prior to commencement of work, notify the Contracting Officer that the following items are prepared and ready for review:

a. Shop Drawings, product data and installation instructions

(1) Manufacturer's detail drawings

(2) Custom fabricated equipment drawings and data

(3) Installation instructions and diagrams

b. Product Data

c. Design Data

(1) Manufacturer's descriptive and technical literature

(2) Manufacturer's Test Data

d. Manufacturer's Instructions

For shipping, handling, storage, installation, and start-up.

1.7.6 Factory Tests and Certifications

Submit Manufacturer's Test Data and certifications, including UL Certification.

PART 2 PRODUCTS

2.1 MODULAR OFFICE ENCLOSURE

2.1.1 Floor Construction

a. Floors to have a similar construction as the roof, with upper layer to be 3/4 in. UL-grade plywood, final finish surface to be 24” x 24” rubber tile in the office and rubber sheet flooring in the shower/bathroom enclosure with 4” rubber wall base at perimeter of spaces.

2.1.2 Wall Construction

a. Insulation

1. Rigid polyisocyanurate board insulation to provide minimum R-30 at roofs, and R-38 at floors. Walls to receive closed cell spray foam insulation to R-19.

2. Walls to receive insulation sprayed to the interiors using stud or pipe structure to 2x wood stud support insulation and for 1/2 in.

gypsum interior surface layer. Framing to be held off the outer walls by minimum 1 in. to allow continuous foam insulation installation.

(Provide moisture-resistant type gyp. In shower/toilet room.) Finish

SECTION 11 01 00 Page 6 using standard 3-coat (primer plus two final) enamel paint finish.

db. Finish:

(1) Exterior: All surfaces not supplied with factory finishes to be field painted, inside and out. Use appropriate products for substrates, semi-gloss or gloss sheen. Prepare all materials to receive paint products per paint manufacturers’ instruction. Touch up any surfaces damaged during shipping or installation..

(2) Interior: Gyp wall board or reinforced fiberglass wall board (white).

2.1.3 Ceiling/Roof Construction

1. Roof/ceiling shall receive multiple layers of insulation board with staggered joints, and minimum 3/4 in. plywood protection layer at the upper surface. Exposed edge of assembly shall receive minimum 24

ga. steel protection flashing around the entire perimeter. Exposed surfaces shall receive paint finish. Interior ceiling surface shall be painted.

2.1.4 Doors

Provide one per unit, with 1-3/4 inch thickness, filled with insulation.

Door numbers include 105 and 106 Insulated steel doors shall have a core of polyurethane foam and an R factor of 10.0 or more (based on a k value of 0.16); face sheets, edges, and frames of galvanized steel not lighter than 23 gage, 16 gage, and 16 gage respectively; magnetic weatherstripping; nonremovable-pin hinges; thermal-break aluminum threshold; and vinyl door bottom. Doors and frames shall receive phosphate treatment, rust-inhibitive primer, and baked acrylic enamel finish. Doors shall have been tested in accordance with SDI/DOOR A250.4 and shall have met the requirements for Level C. Remaining door, 111, shall be hollow metal according to the above requirements with no insulated cavity. Prepare doors to receive specified hardware.

a. Hardware Polished Stainless Steel: Provide three hinges with nonremovable pins for each door. Include closure, Best Lock Lockset exterior of door, threshold, door silencers, kick plate, set of weatherstripping/gasketing for the office door. Include lockset(privacy function), threshold, door silencers, kick plate, set of weatherstripping/gasketing for the unisex bathroom/shower door.

Include lockset (storage function)and kick plate for the door to the utility room, 111.

b. Door Stops: Provide door stops where necessary, to prevent doors from striking adjacent walls or equipment when door is open.

2.1.5 Access Landing, Step, and Ramp

Provide and install new modular aluminum land, stair and ramp system to include hand and guard rails in compliance with requirements for use by the physically handicapped in accordance with ICC A117.1 COMM.

SECTION 11 01 00 Page 7

2.1.6 Lights

Provide, high efficiency rated surface mounted LED lighting. Provide lighting in accordance with UL 1598 . Lighting shall be controlled by occupancy sensors and manual controls. Provide 30 footcandles minimum light levels at desk level of all work stations.

2.1.7 Identification Signs

Mount engraved phenolic or acrylic plastic compartment identification signs 12 by 2 inch high in selected color with one inch high letters on door.

Signs shall comply and be installed in compliance with requirements for use by the physically handicapped in accordance with ICC A117.1 COMM.

2.1.8 Electrical Outlets

Provide 120V outlets spaced a maximum 12ft on center around perimeter walls..

2.1.9 Telecommunications

Provide a pathway from the exterior of the enclosure to the interior with pull boxes at both ends for telecommunications cabling to be installed.

All telecommunications cabling to be installed in the field by contractor.

2.1.10 Plumbing and HVAC

Provide in accordance with PLUMBING article and HVAC article in this Section..

2.2 PLUMBING

Provide plumbing systems in the modular enclosures. Plumbing shall comply with applicable codes and standards. Plumbing components in contact with potable domestic water shall be lead-free.

2.2.1 International Code Council (ICC) Codes

Unless otherwise required herein, perform plumbing work in accordance with the ICC IPC .

a. For ICC Codes, interpret reference to the "code official" to mean the "Contracting Officer." Interpret references to the "owner" to mean the "Contracting Officer." Interpret references to the "permit holder" to mean the "Contractor."

b. For ICC Codes referenced in the Contract documents, the provisions of Chapter 1, "Administrator," do not apply. These administrative requirements are covered by the applicable Federal Acquisition Regulations (FAR) included in this Contract and by the authority granted to the Officer in Charge of Construction to administer the construction of this project. References in the ICC Codes to sections of Chapter 1, must be applied appropriately by the Contracting Officer as authorized by his administrative cognizance and the FAR.

2.2.2 Materials

Provide plumbing materials as required for a complete and operational system.

SECTION 11 01 00 Page 8

2.2.2.1 Piping

Pipe fittings shall be compatible with the applicable pipe materials.

Plastic pipe, fittings, and solvent cement shall meet NSF/ANSI 14 and shall be NSF listed for the service intended. Plastic pipe, fittings, and solvent cement used for potable hot and cold water service shall bear the NSF seal "NSF-PW."

Route water, drain, and vent piping concealed from occupant view within the modular enclosure's construction, in a conditioned space protected from freezing; such protection shall be an integral component of the modular enclosures.

Provide main water, sanitary drain, and vent piping connection points in accessible locations, for connection to building piping in the field.

Provide one or more hose bibs with valves to drain pipes.

Piping and fittings shall comply with the following:

2.2.2.1.1 Sanitary Waste and Vent

a. Cast iron soil pipe and fittings hubless, CISPI 301 and ASTM A888.

Pipe and fittings shall be marked with the CISPI trademark.

b. Polyvinyl Chloride plastic drain, waste and vent pipe and fittings, ASTM D2665, ASTM F891, (Sch 40) ASTM F1760.

c. Copper drainage tube, (DWV), ASTM B306, with wrought copper and wrought alloy solder-joint drainage fittings, ASME B16.29 , or cast copper alloy solder joint drainage fittings, DWV, ASME B16.23 .

2.2.2.1.2 Condensate Drainage

a. Polyvinyl Chloride plastic drain, waste and vent pipe and fittings, ASTM D2665, ASTM F891, (Sch 40) ASTM F1760.

b. Copper drainage tube, (DWV), ASTM B306, with wrought copper and wrought alloy solder-joint drainage fittings, ASME B16.29 , or cast copper alloy solder joint drainage fittings, DWV, ASME B16.23 .

2.2.2.1.3 Domestic Water

a. Seamless copper pipe, ASTM B42.

b. Seamless copper water tube, ASTM B88, ASTM B88M, Type L - Hard.

c. Polypropylene pipe and fittings, NSF/ANSI 14 , NSF/ANSI 61 and ASTM F2389, conforming to dimensional requirements of Schedule 40, Iron Pipe size. Polypropylene piping that will be exposed to UV light shall be provided with a Factory applied UV resistant coating.

d. Cast bronze threaded fittings, ASME B16.15 for use with seamless copper pipe.

e. Wrought copper and bronze solder-joint pressure fittings, ASME B16.22 for use with seamless copper pipe and water tube.

SECTION 11 01 00 Page 9

f. Cast copper alloy solder-joint pressure fittings, ASME B16.18 for use with seamless copper water tube.

g. Press Fittings, for use with seamless copper water tube.

2.2.2.2 Pipe Joint Materials

Pipe joining materials shall comply with the following:

a. Plastic Solvent Cement for PVC Plastic Pipe: ASTM D2564 and ASTM D2855.

b. Solder Material: Solder metal shall conform to ASTM B32.

c. Solder Flux: Flux shall be liquid form, non-corrosive, and conform to ASTM B813, Standard Test 1.

d. Press fittings for Copper Pipe and Tube: Copper press fittings shall conform to the material and sizing requirements of ASME B16.51 and performance criteria of IAPMO PS 117 . Sealing elements for copper press fittings shall be EPDM, FKM or HNBR. Sealing elements shall be factory installed or an alternative supplied fitting manufacturer.

Sealing element shall be selected based on manufacturer's approved application guidelines.

e. Heat-fusion joints for polypropylene piping: ASTM F2389.

2.2.2.3 Pipe Insulation

Insulate pipes, valve bodies, fittings, unions, flanges, and miscellaneous surfaces. Pipe insulation materials shall comply with the following:

a. Cold-Water and Condensate-Drain Piping: Provide mineral fiber insulation with glass cloth jacket, Type T-2, with a thickness of not less than 1/2 inch.

b. Hot-Water and Tempered-Water Piping: Provide mineral fiber insulation with glass cloth jacket, Type T-2, with a thickness of not less than 1 inch.

c. Heat-Traced Cold Water and Drain Piping: Provide mineral fiber insulation with glass cloth jacket, Type T-2, with a thickness of not less than 1-1/2 inches, on piping through and outside of the insulated modular enclosure, including field-installed connections to building piping. Install insulation over piping after field installation of electric heat tracing furnished under Division 22 Plumbing.

d. Lavatory Drain and Water Supply Piping: Provide ADA-compliant white undersink piping covers or enclosures to prevent drain piping and trap, and cold and hot water supply piping and valves, from user contact. Pre-formed individual pipe covers shall be impact resistant, stain resistant, and anti-microbial vinyl. One-piece protective lavatory enclosures may be used in lieu of individual pipe covers, and shall be molded of UV-protected impact-resistant rigid vinyl, with stainless steel reusable fasteners for fastening to the wall; provide concealed rigid wall blocking for fasteners.

SECTION 11 01 00 Page 10

2.2.3 Plumbing Fixtures

Fixtures must be water conservation type. Fixtures for use by the physically handicapped must be in accordance with ICC A117.1 COMM .

Provide vitreous china fixtures that are nonabsorbent, hard-burned, and vitrified throughout the body. No fixture will be accepted that shows cracks, crazes, blisters, thin spots, or other flaws. Equip fixtures with appurtenances such as traps, faucets, stop valves, and drain fittings.

Each fixture and piece of equipment requiring connections to the drainage system must be equipped with a trap. Brass expansion or toggle bolts capped with acorn nuts must be provided for supports, and polished chromium-plated pipe, valves, and fittings must be provided where exposed to view. Fixtures with the supply discharge below the rim must be equipped with backflow preventers. Internal parts of flush and/or flushometer valves, shower mixing valves, shower head face plates, may contain acetal resin, fluorocarbon, nylon, acrylonitrile-butadiene-styrene (ABS) or other plastic material, if the material has provided satisfactory service under actual commercial or industrial operating conditions for not less than 2 years. Plastic in contact with hot water must be suitable for 180 degrees F water temperature. Maximum allowable lead content in wetted surfaces of pipes, pipe fittings, plumbing fittings and fixtures, as determined by a weighted average must not exceed 0.25 percent.

2.2.3.1 Flush Valve Water Closet

a. ASME A112.19.2/CSA B45.1 , white vitreous china, siphon jet, elongated bowl, floor-mounted, floor outlet. Top of toilet seat height above floor shall be 17 to 18.5 inches. Provide wax bowl ring including plastic sleeve. Provide commercial-grade white solid plastic elongated open-front seat with cover and stainless-steel check hinges.

b. Provide flushometer valve conforming to ASSE 1037 , of either the large diaphragm type, or fixed volume piston type with filtered metering bypass. Provide with an ADA compliant metal oscillating non-hold-open handle with factory-applied antimicrobial coating, backcheck angle control-stop valve, vacuum breaker, tail pieces, slip nuts, and wall plates. Valve body, cover, tailpiece and control stop shall be in conformance with ASTM Alloy Classification for semi-red brass.

Components exposed to view shall be chromium-plated copper alloy or polished stainless steel. Handle packing, main seat, stop seat and vacuum breaker shall be molded from a chloramine resistant rubber compound. Valve must not be able to be converted externally or internally to exceed a low consumption flush. Mount flush valve not less than 11 inches above the fixture. Mounted height of flush valve shall not interfere with ADA hand rails.

2.2.3.2 Wall Hung Lavatory

a. ASME A112.19.2/CSA B45.1 , white vitreous china, straight back type, minimum dimensions of 19 inches wide by 17 inches front to rear, with supply openings for use with top mounted centerset faucets, and openings for concealed arm carrier installation. Provide ASME A112.6.1M concealed chair carriers with concealed arms for the lavatory; provide vertical steel pipe supports or equivalent-strength support blocking concealed within the modular enclosure wall. Mount lavatory with the front rim 34 inches above floor and with 29 inches minimum clearance from bottom of the front rim to floor.

b. Provide top mounted washerless single-handle centerset lavatory

SECTION 11 01 00 Page 11 faucet, with aerator and pop-up drain assembly, WaterSense labeled with a maximum flow rate of 0.5 gpm at a flowing pressure of 60 psi.

c. Provide chrome plated 3/8 inch OD soft-copper tube supplies with set-screw chrome-plated brass escutcheons, and chrome-plated quarter-turn valves with lever or wheel handles. Provide chrome-plated 1-1/4 x 1-1/2 inch semi-cast P-trap with cleanout with 17 gage x 1-1/2 inch chrome plated copper tube trap arm with set-screw chrome-plated brass escutcheon.

2.2.3.3 Wheelchair Roll-In Shower

a. CSA B45.5-11/IAPMO Z1 24 one-piece white solid acrylic pressure molded fiberglass reinforced plastic shower stall. Shower stall shall be scratch resistant, waterproof, and reinforced. Shower stall dimensions, threshold, and accessories shall comply with wheelchair roll-in access requirements of the ABA Accessibility Standards.

Provide PVC shower floor drain body and removable stainless steel grid strainer. Shower stall shall meet performance requirements of CSA B45.5-11/IAPMO Z124 and shall be labeled by NAHB Research Foundation, Inc. for compliance. Install shower stall in accordance with the manufacturer's written instructions. Finish installation by covering shower stall attachment flanges with dry-wall in accordance with shower stall manufacturer's recommendation. Provide smooth 100 percent silicone rubber white bathtub caulk between the top, sides, and bottom of shower stall and bathroom walls and floor.

b. Provide stall accessories including but not limited to stainless steel 1-1/2 inch diameter horizontal and vertical grab bars with grip surfaces, stainless steel1-inch diameter shower curtain rod, white 150 denier fabric antimicrobial shower curtain with integrated rings and bottom weights, and wall reinforcements to support accessories.

Provide a portable plastic heavy-duty transfer seat; do not provide a permanent seat, thereby allowing the shower controls to be on any side of the shower stall under the ABA Accessibility Standards.

b. Provide combination thermostatic and pressure-equalizing shower faucet with body mounted from behind the wall, with threaded piping connections. Valve inlet and outlet must be 1/2 inch IPS. Provide external screwdriver check stops, and temperature limit stops set for a maximum temperature of 105 degrees F. Valve must provide a maximum of 2.0 gpm at a flowing pressure of 80 psi. Provide ball joint self-cleaning shower head with adjustable spray pattern, with institutional-type rigidly-mounted wall bracket. Provide WaterSense labeled showerhead with a maximum flow rate of 2.0 gpm. Provide hand-held shower with safety plastic handle and ABA-compliant non-positive shutoff feature, with 6-foot long rubber-lined stainless steel or chrome-plated copper alloy hose, inline vacuum breaker, and slide bar at least 36 inches long. Provide diverter valve to allow user to select between fixed wall-mounted shower and hand-held shower. Exposed surfaces of shower components shall be chrome-plated on corrosion-resistant base metal, or stainless steel, except as otherwise noted. Valve body must be any suitable copper alloy.

Internal parts must be copper, nickel alloy, corrosion resistant steel or thermoplastic material. Mount shower components interconnected with rigid copper tubing mounted behind the wall.

SECTION 11 01 00 Page 12

2.2.3.4 Floor Drains

a. Floor drains shall conform to ASME A112.6.3 , and shall consist of a galvanized cast iron body, integral seepage pan, and adjustable strainer consisting of heel-proof nickel-bronze or stainless steel perforated or slotted grate and threaded collar. The seepage pan shall have weep holes or channels for drainage to the drainpipe. The strainer shall be adjustable to floor thickness. A clamping device for attaching flashing or waterproofing membrane to the seepage pan without damaging the flashing or waterproofing membrane shall be provided when required. Between the drain outlet and waste pipe, a neoprene rubber gasket conforming to ASTM C564 may be installed, provided that the drain is specifically designed for the rubber gasket compression type joint. Provide drain body with trap primer connection.

b. Provide ASSE 1018 trap primer mounted in cold water piping, and concealed connection piping to drain body.

2.2.3.5 Indirect Waste Receptor

Provide in the water heater closet an indirect waste receptor with sanitary piping, trap, and vent. Receptor body may consist of a floor drain with funnel, or a pipe hub. Arrange receptor to receive individual piping from water heater relief valve, water heater drain pan, and HVAC condensate drains.

2.2.4 Water Heater

Provide automatic storage-type electric water heater and accessories.

2.2.4.1 Water Heater

Heater shall conform to UL 174 with 40 gallon storage capacity and dual

4.5 kW heating elements. The elements shall be wired so that only one element can operate at a time. Tank shall be glass-lined steel or other corrosion-resistant material, with foam insulation and plastic outer jacket. Provide integral heat traps, anode rods, and drain valve.

Provide pressure and temperature relief valve; pipe relief to indirect waste receptor, not into heater drain pan.

2.2.4.2 Nameplate

Provide 0.125 inch thick laminated acrylic plastic nameplate, black matte finish with white center core, for water heater. Accurately align lettering and engrave minimum of 0.25 inch high normal block lettering into the white core. Minimum size of nameplate shall be 1.0 by 3.5 inches.

2.2.4.3 Drain Pan and Stand

Provide aluminum or stainless steel drain pan sized larger than the heater base, with threaded drain piping connection fitting. Provide galvanized steel stand at least 12 inches tall to raise heater and drain pan above floor for drainage to indirect waste receptor.

2.2.4.4 Thermostatic Mixing Valve

Mixing valve shall be line size and shall be constructed with rough or finish bodies either with or without plating. Valve shall be constructed

SECTION 11 01 00 Page 13 to control the mixing of hot and cold water and to deliver water at a desired temperature regardless of pressure or input temperature changes.

The control element shall be of an approved type. The body shall be of heavy cast bronze, and interior parts shall be brass, bronze, corrosion-resisting steel or copper. The valve shall be equipped with necessary stops, check valves, unions, and sediment strainers on the inlets. Mixing valves shall maintain water temperature within 5 degrees F of any setting. Provide a vapor-actuated variable-angle dial thermometer with at least 3-1/2-inch diameter face and 0 to 180 degree F range, with brass thermowell and thermal transfer paste, installed in piping downstream of the mixing valve.

2.2.4.5 Vacuum Breaker

Provide in cold water inlet piping as required by applicable codes and standards.

2.2.4.6 Expansion Tank

Diaphragm type, suitable for potable hot water use. Provide in cold water piping at inlet to water heater. Precharge to match incoming building water pressure. Provide a ball valve in the tank inlet piping, with a tee and drain valve to allow relieving the tank water pressure for testing the air charge. Provide a dial pressure gauge with at least 3-1/2-inch diameter face and 0 to 160 psi range, with inlet ball valve, installed in piping near the expansion tank.

2.2.5 Valves

Provide shutoff valves to isolate fixtures and equipment for service.

Provide drain valves with hose threads to allow complete draining of water piping.

2.2.5.1 Ball Valves

MSS SP-110 , bronze or brass body, with stainless steel lever handle and extension stem.

2.2.5.2 Drain Valves

Drain valves shall be brass ball valves with ASSE 1052 vacuum-breaker backflow preventers, male or female inlet threads, hexagon shoulder, and 3/4 inch hose connection. Faucet handle shall be securely attached to stem.

2.2.5.3 Check Valves

MSS SP-80 , bronze body, female inlet threads.

2.2.6 Trap Seal Protection

Provide barrier-type trap seal protectors, or mechanical trap primer piping, to protect traps at the floor drain and the indirect waste receptor. If mechanical trap primer is provided, locate it in the utility closet with branch piping from the main cold water pipe or an individual fixture cold water line.

SECTION 11 01 00 Page 14

2.2.6.1 Mechanical Trap Primers

Tested and certifed to ASSE 1018 , integral backsiphonage protection, capable of operating with 30 psig to 100 psig inlet pressure, with threaded top inlet and threaded bottom outlet for installation in branch piping. Provide distribution with no fewer than 4 tubing outlets; cap unused outlets. Install with inlet ball valve.

2.2.6.2 Trap Primer Connection Piping

Type K seamless copper water tubing ASTM B88 or ASTM B88M,with no joints below floor slab top surface. Provide adapters to trap primer outlets and to connections at traps. Insulate piping with mineral fiber piping insulation.

2.2.6.3 Barrier-Type Trap Seal Protectors

Barrier-type trap seal protection devices shall be constructed in accordance with ASSE 1072 . Provide device sized to fit tightly in each floor drain, hopper drain, or indirect waste receptor, in the fixture body upstream of the trap.

2.2.7 Electric Heat Tracing

Provide heat trace systems for pipes, valves, and fittings that are in accordance with IEEE 515 and UL listed. Systems shall include all necessary components, including heaters and controls to prevent freezing.

Provide on or inside piping that is outside the heated enclosure, including but not limited to heat tracing inside sanitary drain piping.

Provide a tee fitting in the sanitary drain piping with a watertight boss for insertion of the heating cable, with capability to remove and replace the cable. Provide with additional length coiled for field extension into sanitary piping below the building floor slab.

a. Provide self-regulating heaters consisting of two 16 AWG tinned-copper bus wires embedded in parallel in a self-regulating polymer core that varies its power output to respond to temperature along its length.

Ensure heater is able to be crossed over itself without overheating.

Obtain approval before used directly on plastic pipe. Cover heater with a radiation cross-linked modified polyolefin dielectric jacket in accordance with ASTM D2308.

b. For installation on plastic piping, apply the heater using aluminum tape. Provide heater with an outer braid of tinned-copper and an outer jacket of modified polyolefin in accordance with ASTM D2308, to provide a good ground path and to enhance the heater's ruggedness.

c. Provide heaters with self-regulating factor of at least 90 percent, in order to provide energy conservation and to prevent overheating.

d. Operate heaters on line voltages without the use of transformers.

e. Control systems by an ambient sensing thermostat set at 40 degrees F either directly or through an appropriate contactor.

f. Provide labeling for heat tracing, installed on pipe insulation to indicated the presence of the heat tracing.

g. For heat tracing of sanitary drain piping, in addition to heat tracing

SECTION 11 01 00 Page 15 of the exposed and above-slab portions of the drain piping, provide heat trace cable length to field-insert into the drain piping, through any traps, and into the drain piping main below the floor to a point at least 8 feet beyond where the drain piping passes below sub-slab insulation board.

2.3 HVAC

Provide heating, ventilating, and air conditioning (HVAC) for the modules. Comply with the requirements of ICC IMC and ASHRAE 62.1 .

Insulate ducts and piping in accordance with ASHRAE 90.1 - IP ; ducts outside of the insulated modular enclosures shall be insulated for the uninsulated building conditions stated for HVAC sizing in this Article.

a. Size heating and air conditioning to maintain the following room temperature and humidity conditions in accordance with UFC 3-410-01 with Change 5 dated 01Nov19: Heating 68 degrees F dry bulb, with setback to 55 degrees F in unoccupied hours. Cooling 75 degrees F dry bulb and a maximum of 55 degrees F dew point, with set-up to 80 to 85 degrees F in unoccupied hours.

b. Size HVAC for the modular enclosures located within an unconditioned and uninsulated building. Design for the following ambient conditions: Winter dry bulb temperature inside and outside the surrounding building -9 degrees F (-22.7 C). Summer temperatures outside the surrounding building (at ventilation air intake) 86 degrees F dry bulb, 70 degrees F wet bulb. Summer temperatures inside the surrounding building (at outer surfaces of the modular enclosures) 95 degrees F dry bulb, 72 degrees F wet bulb; these are higher than outdoor temperatures due to solar gain and other internal gains.

c. Size HVAC for occupancies during normal working hours of 8 people in the office module, and 1 person in the restroom/shower module.

d. Room temperature controllers and thermostats shall be hard-wired type (wireless remote controllers are not acceptable). They shall include user interfaces with display of room temperature and setpoint, occupant-accessible adjustments of temperature setpoint and occupied-cycle override, with password protection to limit adjustments, and automatic reset to programmed setpoints at the next scheduled occupied/unoccupied cycle changeover. Provide time scheduling with at least 7-day programming, with at least one occupied and one unoccupied cycle per day. The controllers shall be mounted near the doors, with the top of any occupant-adjustable components at no higher than 48 inches above the finished floor in conformance with

ICC A117.1 COMM .

2.3.1 Air Conditioning

Provide air conditioning in the office module and the restroom/shower module, with individual zone temperature control in each module.

a. Air conditioning system shall include mini-split type air conditioners or heat pumps. Indoor units may be wall or ceiling mounted.

Condensing units (also known as outdoor units) shall be mounted on top of the restroom/shower module to reduce vibration transmission to the office module, with a raised stand and rubber vibration isolation, fastened to the module roof. Interconnecting refrigeration piping and condensate piping shall be concealed from occupant view within the

SECTION 11 01 00 Page 16 modules, and shall be insulated. Condensate shall be piped to drain to the indirect waste receptor in the water heater closet. If heat pumps are used, the condensing units shall include provisions to prevent frost buildup, and to drain condensate to the indirect waste receptor.

b. Provide refrigerant piping between components. Piping shall be copper Type ACR. Supports shall be resilient to allow expansion and contraction without damage to the piping; clamps to supports shall have plastic cushion linings. Install piping in accordance with UFGS 23 23 00 Refrigerant Piping, most current version (date of original issue 10-01-2007).

2.3.2 Heating

Provide heating in the office module and the restroom/shower module, with individual zone temperature control in each module.

a. Heating shall include mini-split type heat pumps or electric heating.

If heat pumps are used, and both modular units are served by a single condensing unit, provide separate electric space heating in the restroom/shower module to allow simultaneous cooling in the office when the shower/restroom requires heating.

2.3.3 Ventilation

Provide ventilation for the modules.

a. Ventilation ductwork shall be concealed from view of the modular enclosure occupants, and insulated as required by applicable codes for the ambient conditions at the duct locations. Ventilation shall include an energy-recovery ventilator (ERV) serving both modular enclosures, with interconnecting ductwork and room inlets and outlets. Ducts from the single ERV to outdoors are indicated on the Mechanical Drawings (Division 23 of the Contract Documents). If dedicated ERVs serving the modular enclosures individually are provided, provide additional ductwork to outdoors so that the ERVs operate independently. If ERVs are of a type which require a defrost cycle, provide condensate drains piped to the indirect waste receptor, with piping protected from freezing. Mount ERVs on top of the modular enclosures, with spring vibration isolators fastened to the modular enclosure roof. Connect ducts, pipes, and wiring with flexible connections.

b. Provide weather-resistant intake and exhaust wall hoods for field installation in the outside wall of the building. Hoods shall be of heavy-gauge galvanized steel or aluminum construction, with mounting flange, duct collar, and wire mesh birdscreen. Coordinate installation with the General Contractor and Mechanical Subcontractor;

see Mechanical Drawings for ductwork between the ERV and the wall hoods. For galvanized steel, provide zinc-rich paint, field-applied on cut edges and scratches for a continuous zinc coating on surfaces exposed to weather.

c. Ventilation tempered supply air provided by the ERV may discharge into the modular units without additional heating or cooling in the ERV supply ductwork. Size air conditiong and heating to compensate for heat losses and gains due to the ventilation air. Arrange supply air outlets to distribute the air uniformly without excess drafts on

SECTION 11 01 00 Page 17 occupants.

d. Locate room exhaust intakes away from supply outlets. In the restroom/shower module, locate the exhaust intake near the shower stall.

e. If the design includes transferring makeup air from the office module to the restroom/shower module, the transfer shall include a duct with at least two 90-degree turns to prevent viewing between the modular enclosures, and acoustic lining or other sound attenuation to minimize transfer of sound between the modular enclosures.

f. Provide hard-wired wall controllers with user interface; locate near the door in the office module. Provide time scheduling devices to provide at least 7-day programming with at least one occupied and one unoccupied cycle per day.

2.4 ELECTRICAL SERVICE

Modular Office Enclosure(s) shall have a single 100A, 120/208V, three phase, 4-wire service panel to serve electrical devices and lighting of all modular units provided. Provide accessible means for power connection in the field.

2.5 NAMEPLATES

Provide 0.125 inch thick laminated acrylic plastic nameplates, black matte finish with white center core, for water heater, air conditioners, heat pumps, condensing units, ERVs, HVAC room controllers, and electrical service power panel. Accurately align lettering and engrave minimum of

0.25 inch high normal block lettering into the white core. Minimum size of nameplates shall be 1.0 by 2.5 inches.

PART 3 EXECUTION

3.1 INSTALLATION

Prior to commencement of installation, perform a complete walk through of the facility with the Contracting Officer to verify readiness for installation.

Provide adequate protection of all finished surfaces, fixtures, and other equipment to prevent any damage during the installation work.

Conduct installation procedures in accordance with the manufacturer's instructions.

3.1.1 Equipment Connections

Complete equipment connections for all utilities. Connect electrical devices, lights, and powered equipment to circuit breakers in the power panel..

3.1.2 Plumbing Work

Provide complete installation at the modular enclosure factory. Install plumbing fixtures, equipment, piping, insulation, and other components of plumbing systems in accordance with manufacturers' recommendations and instructions and applicable codes and standards.

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Insulate valves, unions, and other pipe fittings with the same thickness as on adjacent piping. Provide continuous outer vapor barrier. Locate piping hangers and supports outside the pipe insulation with protective shields wherever possible; where supports must be in contact with the piping, insulate the hanger rod or other mounting device to prevent heat loss and condensation. Protect any piping insulation exposed to occupant view inside the modular enclosure, with a30 mil thick PVC and jacket system. Omit insulation on exposed cold water piping at water closet tank supplies and flush valves. On lavatories, provide ADA piping protection.

Install water heater in protective closet. Provide expansion tank, thermostatic mixing valve, and accessories. Install water heater in a drain pan mounted on a raised galvanized steel floor stand, at least 12 inches high, to allow drainage. Provide an indirect waste receptor with trap and piping to the modular enclosure's sanitary drainage and vent piping systems. Pipe water heater relief valve and drain pan discharge separately to the receptor. Do not pipe relief valve discharge to the drain pan.

Provide final field connections and intermediate piping and insulation as required, to connect to the sanitary drain, vent, and water piping furnished under Division 22 Plumbing, for a complete and operable system.

Coordinate with Plumbing Subcontractor to ensure full coverage of electric heat tracing on piping that is through or outside the modular enclosure.

Tag all plumbing final connection points of equipment, indicating item number, name of devices or components, and type of utility (water, gas, steam, drain).

3.1.3 HVAC Work

Provide complete installation at the modular enclosure factory.

Components installed on the exterior of the enclosures, and interconnections between the modular enclosures, may be field installed.

Coordinate with the Mechanical Subcontractor for complete installation of related work under Division 23 of the Contract Documents.

3.1.3.1 Testing, Adjusting, and Balancing (TAB)

Provide TAB services in accordance with the requirements of AABC MN-1, NEBB PROCEDURAL STANDARDS, or SMACNA 1780. Submit tab firm prior to modular enclosure installation, and submit a testing, adjusting, and balancing report.

a. Independent AABC or NEBB or TABB TAB agency: Certify that the TAB agency is a first tier subcontractor who is not affiliated with any other company participating in work on this contract, including design, furnishing equipment, or construction. Further, submit the following, for the agency, to Contracting Officer for approval: AABC registration number and expiration date of current certification; or NEBB certification number and expiration date of current certification; or TABB certification number and expiration date of current certification.

3.2 OPERATION AND MAINTENANCE MANUALS

Submit six copies of operating instructions outlining the step-by-step procedures required for equipment start-up, operation and shutdown.

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Include the manufacturer's name, model number, service manual, parts list, and a brief description of equipment and basic operating features.

Submit 6 copies of maintenance manuals listing routine maintenance procedures, possible breakdowns and repairs, trouble shooting guides, and containing the following:

a. Front and rear protective covers with labeled project name.

b. Index indicating item number, quantity, description, manufacturer's name, and model number.

c. Maintenance instructions for stainless steel and plastic laminate.

d. Manufacturer's catalog specification sheets and manufacturer's detail and control drawings.

e. Manufacturer's operation manual outlining the step-by-step procedures for equipment installation, startup, basic operation features, and operation shutdown.

f. Manufacturer's maintenance manual listing routine maintenance procedures, possible breakdowns, repairs, and troubleshooting guides.

Include simplified diagrams for the equipment as installed.

g. Manufacturer's list of parts and supplies with current unit price and address of manufacturer's parts supply warehouse.

3.3 INSTRUCTIONS TO GOVERNMENT PERSONNEL

Prepare and conduct a training course for the operating staff as designated by the Contracting Officer. The training must consist of a total 2 hours of normal working time and start after the system is functionally completed but prior to final acceptance tests. Cover in the field instructions the items contained in the operating and maintenance instructions, as well as demonstrations of routine maintenance operations. Notify the Contracting Officer at least 14 days prior to date of proposed conduction of the training course.

Submit a list of authorized local service and repair entities to the Contracting Officer 14 days prior to conducting the training course.

3.4 TESTS

Perform the tests as specified. Notify the Contracting Officer in writing, 10 days prior to performing tests. Perform tests in the presence of the manufacturer's representative and the Contracting Officer.

3.4.1 Initial Start-Up and Operational Test

Prov…