12 35 53.19.pdf

SECTION 12 35 53.19

WOOD LABORATORY CASEWORK

03/24

PART 1 GENERAL

1.1 SUMMARY

Section includes:

1) Wood laboratory casework.

2) Utility-space framing at backs of base cabinets.

3) Filler and closure panels.

4) Laboratory casework system that includes support and utility-space framing, filler and closure panels, wall panels, undercabinet lighting, undershelf lighting, and modular countertops.

5) Countertops, Refer to Section 12 36 00 COUNTERTOPS.

6) Tables.

7) Shelves.

8) Laboratory sinks.

9) Laboratory accessories.

10) Water, laboratory gas, and electrical service fittings.

11) Laboratory Electrical Service Pedestals.

12) Vented Cylinder and Chemical storage cabinets

Related Requirements:

1) Section 01 30 00 ADMINISTRATIVE REQUIREMENTS

2) Section 06 10 00 ROUGH CARPENTRY for wood blocking for anchoring laboratory casework.

3) Section 09 22 00 SUPPORTS FOR PLASTER AND GYPSUM BOARD for reinforcements in metal-framed partitions for anchoring laboratory casework.

4) Section 09 65 00 RESILIENT FLOORING for base applied to laboratory casework.

5) Section 11 53 00 LABORATORY EQUIPMENT AND FUMEHOODS

6) Section 12 36 00 COUNTERTOPS: Additional Requirements for

Countertops

7) Section 22 00 00 PLUMBING, GENERAL PURPOSE

8) Section 22 42 16.16 COMMERCIAL SINK

1.2 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 NATIONAL STANDARDS INSTITUTE (ANSI)

ANSI A135.4 (2012) American National Standards Specifications for Basic Hardboard

AMERICAN SOCIETY OF CIVIL ENGINEERS (ASCE)

ASCE 7 (2017) Minimum Design Loads for Buildings and Other Structures

AMERICAN SOCIETY OF MECHANICAL ENGINEERS (ASME)

ASME A112.18.1/CSA B125.1 (2018) Plumbing Supply Fittings

AMERICAN SOCIETY OF SANITARY ENGINEERING (ASSE)

ASSE 1035 (2020) Performance Requirements for Laboratory Faucet Backflow Preventers

ASTM INTERNATIONAL (ASTM)

ASTM C1048 (2018) Standard Specification for Heat-Strengthened and Fully Tempered Flat Glass

ASTM D1037 (2012) Evaluating Properties of Wood-Base Fiber and Particle Panel Materials

ASTM E84 (2023) Standard Test Method for Surface Burning Characteristics of Building Materials

ASTM E119 (2022) Standard Test Methods for Fire Tests of Building Construction and Materials

BUILDERS HARDWARE MANUFACTURERS ASSOCIATION (BHMA)

ANSI/BHMA A156.9 (2020) Cabinet Hardware

ANSI/BHMA A156.18 (2020) Materials and Finishes

COMPOSITE PANEL ASSOCIATION (CPA)

CPA A208.1 (2016) Particleboard

METAL FRAMING MANUFACTURERS ASSOCIATION (MFMA)

MFMA-4 (2004) Metal Framing Standards Publication

Scientific Equipment & Furniture Association (SEFA)

SEFA 2 (1997) Installation of Scientific Laboratory Furniture & Equipment

SEFA 3 (2010) Laboratory Work Surfaces

SEFA 7 (2010) Laboratory Fixtures

SEFA 8W (2007) Laboratory Grade Wood Casework

SEFA 11 (2019) Liquid Chemical Storage Cabinets

Federal Motor Vehicle Safety Standard (FMVSS)

FMVSS 302 Flammability of Interior Materials

NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION (NEMA)

ANSI/NEMA LD 3 (2005) Standard for High-Pressure Decorative Laminates

NEMA WD 1 (1999; R 2020) Standard for General Color Requirements for Wiring Devices

NEMA WD 6 (2021) Wiring Devices Dimensions Specifications

NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)

NFPA 30 (2024) Flammable and Combustible Liquids Code

NFPA 70 (2023; ERTA 7 2023; TIA 23-15) National Electrical Code

U.S. GENERAL SERVICES ADMINISTRATION (GSA)

FS W-C-596 (2017) Connector, Electrical, Power, General Specification For

FS W-S 896 (1999) Switches, Toggle (Toggle And Lock), Flush Mounted

UNDERWRITERS LABORATORIES (UL)

UL 20 (2018; Reprint May 2023) UL Standard for Safety General-Use Snap Switches

UL 94 (2023; Reprint Jan 2024) UL Standard for Safety Tests for Flammability of Plastic Materials for Parts in Devices and Appliances

UL 498 (2017; Reprint May 2023) UL Standard for Safety Attachment Plugs and Receptacles

UL 943 (2016; Reprint Sep 2023) UL Standard for Safety Ground-Fault Circuit-Interrupters

UL 1275 (2021) Flammable Liquid Storage Cabinets

WOODWORK INSTITUTE (WI)

NAAWS 3.1 (2017; 2018 Errata Edition) North American Architectural Woodwork Standards

1.3 DEFINITIONS

1.3.1 Concealed Surfaces of Casework

Include sleepers, web frames, dust panels, and other surfaces not usually visible after installation.

1.3.2 Exposed Surfaces of Casework

Surfaces visible when doors and drawers are closed, including bottoms of cabinets more than 42 inches (1066 mm) above floor, and visible surfaces in open cabinets.

Ends of cabinets are defined as "exposed" except ends are defined as "concealed" where installed directly against and completely concealed by walls or other cabinets.

1.3.3 Semiexposed Surfaces of Casework

Surfaces behind opaque doors, such as cabinet interiors, shelves, and dividers; interiors and sides of drawers; and interior faces of doors. Tops of cases 72 inches (1828 mm) or more above floor and bottoms of cabinets more than 24 inches (600 mm) but less than 48 inches (1200 mm) above floor are defined as "semiexposed."

1.4 ADMINISTRATIVE REQUIREMENTS

1.4.1 Pre-Installation Meetings

1. Conduct a preinstallation meeting at least one week prior to the start of the work in this section; require attendance by all affected installers.

1.4.2 Coordination

1) Service Fixtures: Coordinate location and characteristics of service connections.

2) Equipment and instruments: Coordinate installation of casework with fume hoods and scientific equipment. (Casework configurations)

3) Keying Conference: Conduct conference prior to ordering keys.

Incorporate conference decisions into keying submittal.

1.5 SUBMITTALS

Government approval is required for submittals with a "G" or "S" classification. Submittals not having a "G" or "S" classification are for information only. When used, a code following the "G" classification identifies the office that will review the submittal for the Government.

Submit the following in accordance with Section 01 33 00 SUBMITTAL

PROCEDURES:

SD-02 Shop Drawings

1) Provide plans, elevations, sections, and attachment details. Show locations of cutouts and holes for items to be installed in cabinets.

2) Indicate locations, types and sizes of casework using large scale plans, elevations, and cross sections. Include rough-in, anchors, reinforcements, blocking, placement dimensions and tolerances, clearances required, and utility locations if any.

3) Indicate manufacturer's catalog numbers for casework.

4) Show fabrication details, including types and locations of hardware.

5) Indicate locations and types of service fittings.

6) Include details of utility spaces showing supports for conduits and piping.

7) Include details of support framing system.

8) Include details of exposed conduits, if required, for service fittings.

9) Indicate locations of and clearances from adjacent walls, doors, windows, other building components, and laboratory equipment.

10) Include coordinated dimensions for laboratory equipment specified in other Sections.

11) Provide typical vertical elevation for sinks showing drying rack and shelf for water system and electrical connections.

12) Provide typical plan and section details of vertical chases to support electrical, process gas, exhaust, and supply water. Provide additional condition without sink, refer to drawings.

13) Provide Separate details for nonferrous casework assemblies, refer to drawings.

SD-03 Product Data

Wood Veneer Finishes

Casework Schedule

Casework dimensions

Casework configurations

Construction details

Joint details

Casework attachment

Process Gas Fixtures

Faucet

Adjustable Shelf Support Connection Details to Countertop

SD-04 Samples

Casework finishes and materials requiring color selection.

Cabinet Hardware: One for each type and finish planned to be installed.

Samples for Verification: For each type of casework and exposed-hardware finish, in manufacturer's standard sizes.

SD-06 Test Reports

From independent laboratory indicating compliance with referenced chemical-resistance standards for cabinet finish, and liner materials.

SD-07 Certificates

Quality Assurance: Submit labels and certificates required by quality assurance and quality control programs

SD-10 Operation and Maintenance Data

Manufacturer's recommendations for care and cleaning Finish touch-up kit for each type and color of materials provided

1.6 QUALITY ASSURANCE

1.6.1 General Requirements

Manufacturer Qualifications: A qualified manufacturer that produces casework of types indicated for this Project that has been tested for compliance with SEFA 8W.

Installer Qualifications: Company specializing in performing work of the type specified in this section, with not less than five years of documented experience and approved by manufacturer.

1.7 DELIVERY, STORAGE, AND HANDLING

Protect finished surfaces during handling and installation with protective covering of polyethylene film or other suitable material.

Do not deliver or install casework until the conditions specified under Part 3, Examination Article of this section have been met. Products delivered to sites that are not enclosed and/or improperly conditioned will not be accepted if warping or damage due to unsatisfactory conditions occurs.

Store casework in the area of installation. If necessary, prior to installation, temporarily store in another area, meeting the environmental requirements specified under Part 3, "Site Verification of Conditions" paragraph of this section.

1.8 SEQUENCING AND SCHEDULING

Coordinate work with other trades. Units shall not be installed in any room or space until painting, and ceiling installation are complete within the room where the units are located. Floor cabinets shall be installed after finished flooring materials are installed.

1.9 PROJECT/SITE CONDITIONS

1.9.1 Field Conditions

1) Do not deliver or install cabinets until building is enclosed, wet-work is complete, and HVAC system is operating and maintaining temperature and relative humidity at levels planned for building occupants during the remainder of the construction period.

2) Field Measurements: Where cabinets are indicated to fit to other construction, verify dimensions of other construction details by field measurements before fabrication, and indicate measurements on Shop Drawings. Coordinate fabrication casework schedule with construction progress to avoid delaying the Work.

Locate concealed framing, blocking, and reinforcements that support cabinets by field measurements before being enclosed/concealed by construction, and indicate measurements on Shop Drawings.

3) Established Casework Dimensions: Where cabinets are indicated to fit to other construction, establish dimensions for areas where cabinets are to fit. Provide allowance for trimming at site, and coordinate construction to ensure that actual dimensions correspond to established dimensions.

4) Locate concealed framing, blocking, and reinforcements that support casework by field measurements before enclosing them, and indicate measurements on Shop Drawings.

1.10 MOCK-UPS

Provide full size base cabinet, complete with drawers, door, adjustable shelf and countertop. Refer to Section 12 36 00 COUNTERTOPS.

Provide full size corrosive, solvent, and fire base cabinets with adjustable shelf and countertop. Refer to Section 12 36 00 COUNTERTOPS.

Locate on site in protected area for review, inspection, and approval.

Mock-up may remain as part of the work if approved.

Provide typical sink with drying rack and shelf for water system and electrical connections.

1.11 WARRANTY

1) See Section 01 78 00 CLOSEOUT SUBMITTALS for any additional warranty requirements.

2) Correct defective work within a five week period after Date of Substantial Completion at no additional cost to Owner. Defects include, but are not limited to:

a. Ruptured, cracked, or stained finish coating.

b. Discoloration, or lack of finish integrity.

c. Cracking or peeling of finish.

d. Failure of hardware.

PART 2 PRODUCTS

2.1 MANUFACTURERS

2.1.1 Source Limitations

Obtain laboratory casework from single manufacturer unless otherwise indicated.

1) Obtain countertops, sinks, accessories, and service fittings from casework manufacturer.

2) Products:

a. Pure Water Single Faucet.

b. Process Gas Valve: L287.

c. Wood Laboratory casework manufacturer.

d. Laboratory Electrical Service Pedestals.

2.2 PERFORMANCE REQUIREMENTS

2.2.1 System Structural Performance

Laboratory casework and support framing system shall withstand the effects of the following gravity loads and stresses without permanent deformation, excessive deflection, or binding of drawers and doors:

1) Base Units: 500 lb/ft across cabinet ends.

2) Suspended Units: 300 lb static load.

3) Tables: 300 lb minimum, on four legs.

4) Drawers: 125 lb, minimum.

5) Shelves: 100 lb/ft, minimum.

6) Support Framing System: 400 lb/ft.

7) Work Surfaces: 300 lb.

8) Upper Shelving: 100 lb/ft, minimum.

2.2.2 Delegated Design

Engage a qualified professional engineer, as defined in Section 01 45 00 QUALITY CONTROL to design laboratory casework installation. Provide structural details as needed for mechanical chases. Chases will need to support plumbing and process gases.

2.3 CASEWORK, GENERAL

1) Wood Laboratory Casework is Solid wood and wood paneling construction;

each unit is self-contained and not dependent on adjacent units or building structure for rigidity; in sizes necessary to avoid field cutting except for scribes and filler panels. Include adjustable levelers for base and tall cabinets.

2) Provide nonferrous Casework as shown in Drawings. Bench supports for chases, pulls, and other hardware to be aluminum (or other nonferrous metal).

3) Casework Product Standard: Comply with SEFA 8W, "Laboratory Grade Wood Casework."

4) Flammable Liquid Storage: Where cabinets are indicated for solvent or flammable liquid storage, provide units that are listed and labeled as complying with requirements in NFPA 30 by a testing and inspecting agency acceptable to authorities having jurisdiction.

5) Corrosive Liquid Storage: Where cabinets are indicated for corrosive liquid storage, provide units that are listed and labeled as complying with requirements in NFPA 30 and OSHA 1910.106 by a testing and inspecting agency acceptable to authorities having jurisdiction.

6) Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and application.

7) Ventilation requirements for case work:

a. Pump Cabinets (significant enough to avoid pump over heating):

There are around 80 pump cabinets, each with an estimated heat load of about 3000 BTU/hr

b. Solvent Cabinets: ~10 air changes/hr

c. Corrosive Cabinets: ~10 air changes/hr

2.3.1 Wood Casework

2.3.1.1 General

1) Type Of Construction: Face Frame.

2) Door And Drawer-Front Style: Flush Overlay

3) Species: Maple

4) Cut:Plain Sliced/Plain Sawn

5) Grain Direction: Vertically for drawer fronts, doors, and fixed panels.

6) Grain Match: Book Match

7) Matching on Veneer leaves: Random.

8) Matching withing Panel Face: Center-balance

9) Veneer Matching within Room: Provide cabinet veneers in each space from a single flitch with doors, drawer fronts, and other surfaces matched in a sequenced set with continuous match where veneers are interrupted perpendicular to the grain.

10) Access Panels: Where indicated, for maintenance of utility service and mechanical and electrical components.

11) Removable back panels on indicated base cabinets. One Piece Tempered Hardboard. Provide partial height back panels at sink cabinets.

12) Provide removable panels at backs of open spaces between base cabinets and at ends of utility spaces not otherwise enclosed.

13) Scribes and Fillers: Panels of matching construction and finish, for locations where cabinets do not fit tight to adjacent construction.

14) Sloped Tops for Upper Cabinets: With closed ends, of matching construction and finished where located on the drawings. Concealed anchorages for casework attachment to cabinet(s) below.

15) Factory-finish all exposed and semi-exposed surfaces with the same finish.

a. Casework Finish Performance: Provide finish on all surfaces having chemical resistance of Level 0 (no change) or Level 1 (slight change of gloss or slight discoloration) according to SEFA 8W and no visible effect when surface is exposed to:

i. Hot water at temperature between 190 degrees F (88 degrees C) and 205 degrees F (96 degrees C) trickled down the test surface at 45 degree angle for 5 minutes.

ii. Constant moisture in the form of 2 by 3 by 1 inch (51 by 76 by 25 mm) thick cellulose sponge kept continually saturated with water and in contact with test surface for 100 hours.

b. Preparation: Wood sanded smooth, free from dust and mill marks.

c. Stain: Single application of clean, manufacturer-recommended stain of selected color; tinted coating not acceptable.

d. Coating: Clear, superior-quality, chemical-resistant acyclic urethane; applied in accordance with manufacturer instructions, force-dried, sanded and wiped clean.

e. Coats: Multiple coats as required to achieve minimum 1.5 mil (0.038 mm) dry film thickness.

f. Appearance: Clear satin gloss; not cloudy or muddy.

16) Furring, Blocking, Shims, and Hanging Strips: hardwood lumber kiln-dried to less than 15 percent moisture content.

17) Anchors: Select material, type, size, and finish required for each substrate for secure anchorage. Provide metal expansion sleeves or expansion bolts for post-installed anchors. Use nonferrous-metal or hot-dip galvanized anchors and inserts at inside face of exterior walls and at floors.

18) Construction: Joint details doweled, glued and screwed, except drawers may be lock-shoulder jointed; with interior of units smooth and flush;

cabinet bottom flush with top of face frame; without gaps or inaccessible spaces or areas where dirt or moisture could accumulate.

19) Structural Performance: In addition to the requirements of SEFA 3, SEFA 7, and SEFA 8W, components safely support the following minimum loads:

a. Base Units: 500 pounds per linear foot (744 kgs/linear m) across the cabinet ends.

2.3.1.2 Materials

2.3.1.2.1 Exposed Materials

1) General: Provide materials that are selected and arranged for compatible grain and color. Do not use materials adjacent to one another that are noticeably dissimilar in color, grain, figure, or natural character markings.

2) Plywood: Hardwood plywood, veneer core with face veneer of species indicated. Grade A exposed faces, at least 1/50 inch (0.5 mm) thick, and Grade J crossbands. Provide backs of same species as faces.

Solid Wood: Clear hardwood lumber of species indicated.

Edge banding: Wood veneer of same species as face veneer.

2.3.1.2.2 Semiexposed Materials

1) Wood: Provide hardwood plywood of same species are exposed plywood for semiexposed surfaces unless otherwise indicated.

2.3.1.2.3 Concealed Materials

1) Plywood: hardwood plywood. Provide backs as same species as faces.

2) Hardboard.

2.3.2 Wood Cabinet and Table Materials

2.3.2.1 Lumber

1) All framing lumber shall be kiln-dried Grade III to dimensions as shown on the drawings. Frame front, where indicated on the drawings, shall be nominal 3/4 inch hardwood.

2) Standing or running trim casework components, which are specified to receive a transparent finish (Wood veneer Finishes), shall be hardwood species, plain sawn. AWI grade shall be custom. Location, shape, and dimensions shall be as indicated on the drawings.

2.3.2.2 Plywood

All plywood panels used for framing purposes shall be veneer core hardwood plywood, NAAWS 3.1 Grade AA. Nominal thickness of plywood panels shall be as indicated in this specification and on the drawings.

2.3.2.3 Particleboard

All particleboard shall be industrial grade, medium density (40 to 50 pounds per cubic foot), 3/4 inch thick. A moisture-resistant particleboard in grade Type 2-M-2 or 2-M-3 shall be used as the substrate for veneer covered components as located on the drawings and other areas subjected to moisture. Particleboard shall meet the minimum standards listed in ASTM D1037 and CPA A208.1

2.3.2.4 Hardboard

ANSI A135.4, Class 1 tempered

2.4 AUXILIARY CABINET MATERIALS

Where cabinets are indicated for solvent or flammable liquid storage, provide units that are listed and labeled as complying with requirements in NFPA 30 by a testing and inspecting agency acceptable to authorities having jurisdiction

2.4.1 Corrosive Storage Cabinet Details

Sizes as indicated on drawings.

Cabinet Lining: 1/4-inch- (6-mm-) thick, polyethylene, polypropylene, or phenolic-composite lining material

Must be vented, comply with SEFA 1, provide vent hole, sized to match vent kit connection. Manufacturer to provide recommended vent kit. Provide a minimum 1-2 air changes per minute.

1) Locate acid-storage cabinet vents in accordance with manufacturer's instructions.

2) Vent base cabinets through work surface with manufacturer's vent kit.

3) Vent each corrosive-storage cabinet separately.

4) When acid-storage cabinets are installed below fume hoods, provide louvered cabinet doors.

5) Seal penetrations with chemical-resistant sealant.

Cabinet to be marked "CORROSIVE" in red letters.

Provide removable shelves, same material as cabinet covered with corrosion-resistant liner.

Bottom Pan: Liquid-tight liner covering entire bottom of acid-storage cabinet.

Cabinets shall be numbered and include an 8 ½ in. x 11 in. sign holder to indicate cabinet contents.

2.4.2 Corrosive/Flammable Storage Cabinet Details

1) Comply with UL 1275 and NFPA standard.

2) Sizes as indicated on drawings.

3) Cabinet Lining: 2" deep polypropylene containment pan on each shelf and base of cabinet. the trays shall accommodate standard 4l bottles.

4) Must be vented, provide vent hole, sized to match vent kit connection.

Manufacturer to provide recommended vent kit. Provide a minimum 1-2 air changes per minute.

5) Cabinets shall have self-closing and self-latching doors

2.4.2.1 Cabinet Labeling

1) Corrosive: Cabinets shall be labeled as "CORROSIVE".

2) Flammable: Cabinet shall be Cabinets shall be labeled as "FLAMMABLE".

3) Cabinets shall be numbered and include an 8 1/2 in. x 11 in. sign holder to indicate cabinet contents.

2.4.3 Pump/Chiller Cabinet

1) Base Cabinet shall incorporate equipment cabinets for vacuum pumps and chillers as required.

2) Equipment cabinets shall provide acoustic insulation to reduce noise from operating pumps and chillers.

3) Equipment cabinets shall incorporate sufficient airflow through front ventilation holes or other means to prevent the pumps or chillers from overheating.

4) Equipment cabinets shall incorporate switched duplex 120V-20A receptacles(NEMA 5-20) to provide power to vacuum pumps and chillers.

Switches shall be mounted on the front exterior of the cabinet.

5) Appropriately sized pump/chiller carts shall be provided to facilitate easy servicing of equipment in the cabinet.

6) Equipment Cabinet shall incorporate Vibration Isolators.

7) Provide wheeled trolley for pumps to allow them to be easily removed for maintenance.

2.4.4 Solvent (Flammable & Combustible Liquid) Storage Cabinets

1) Construct to NFPA 30 and applicable OSHA requirements.

2) Comply with SEFA 11.

3) Fire Resistance: Maximum internal temperature of 325 degrees F (163 degrees C) at the center, and 1 inch from the top of the cabinet when subjected to a ten-minute fire test that simulates fire exposure of a standard time-temperature curve specified in ASTM E119.

4) Sizes as indicated on drawings or as required to accommodate easy servicing of equipment in cabinet.

5) Shall be insulated with 1" thick acoustic foam, Attached through adhesive backing on the foam to all sides of the cabinet, including the door.

6) Foam shall comply with FMVSS 302 and UL 94-HF-1 requirements.

7) Must be vented, Provide vent holes, sized to match vent kit connection.

Manufacturer to provide recommended vent kit. Provide a minimum 1-2 air changes per minute.

8) Provide venting capable of achieving ten air changes per hour. Tie into building lab exhaust system.

a. Vent connections 1-1/2 inch minimum diameter, corrosion-resistant piping having flame spread index of 25 or less when tested in accordance with ASTM E84.

b. Vent each cabinet separately with sufficient mixing distance for incompatible chemicals.

c. Provide minimum of two vents with fire arrestor for each cabinet.

9) Provide (1) Switched electrical duplex 120V, 5-20R receptacle. Switches shall be mounted on front exterior of cabinet.

10) Signage: Provide manufacturer's standard signage reading "FLAMMABLE - KEEP FIRE AWAY" or similar message in bright red color.

11) Cabinets shall be equipped with two(2) adjustable shelves.

12) Cabinets shall have self-closing doors.

13) Self Closing Doors shall have fusible links.

14) Cabinets shall incorporate removable secondary containment.

15) Final layout of these cabinets shall be agreed upon between the designer and the Government.

2.4.5 Cylinder Storage

2.4.5.1 Cylinder Storage Racks

1) Provide cylinder storage racks for the storage of backup cylinders containing non-hazardous, inert gases. Gases that are acceptable to store on racks are: Zero Air, Nitrogen, Argon, Carbon Dioxide, Krypton, and Helium.

2) Provide racks that can store 2 cylinders, one wide by two deep.

3) For the frame, provide 2" square steel tube, continuously seam welded, 0.125" thick with black powder-coat paint.

4) Provide two levels of welded steel chains, 19" long each, with snaps for each cylinder.

5) Provide 4 pre-drilled holes for floor mounting.

2.4.5.2 Cylinder Storage Cabinets

1) Provide 2-cylinder and 3-cylinder storage cabinets for the storage of flammable and oxidizing gases, both for service and for storage. Gases to be contained in cylinder cabinets are: Oxygen, Hydrogen, Methane, and Propane.

2) Provide cabinets constructed of heavy-duty 12-gauge steel with powder coat paint finish.

3) Provide built-in ramp for cylinder loading and unloading with self-closing doors.

4) Provide spark-proof chains for securing of cylinders within cabinets.

5) Provide front and side vent slits for dispersion of gases in event of leak.

6) Cabinets shall have interior large enough to accommodate 300 cubic foot gas cylinders.

2.4.6 Glass for glazed doors

Glass for Glazed Doors: Clear tempered glass complying with ASTM C1048, Kind FT, Condition A, Type I, Class 1, Quality-Q3; not less than 5.0 mm thick.

2.5 CABINET HARDWARE

Provide laboratory casework manufacturer's standard for chemical resistant commercial-quality, heavy-duty hardware complying with requirements indicated for each type below.

Flammable, Corrosive, and Combustible Liquid Storage Cabinets:

1) Provide UL-Listed hardware.

2) Provide self-closing doors.

3) Comply with requirements of NFPA 1 and ICC (IFC). Minimum 90 degree opening. Three-point latch arrangement, door(s) shutting and latching automatically when hold-open device's fusible link melts at 165 degrees F (74 degrees C) under fire conditions outside the cabinet. At pair of doors, synchronize latching so that both doors always fully close.

4) Door Handles: Provide manufacturer's standard, stainless steel.

5) Provide manufacturer's standard cylinder lock and key set.

6) Exposed Cabinet Hardware: Satin Stainless Steel: BHMA 630.

7) Concealed Cabinet Hardware: Provide manufacturer's standard finish that complies with product class requirements in BHMA A156.9.

2.5.1 Door Hinges

Frameless Concealed Hinges (European Type): BHMA A156.9, B01602, self-closing. Provide 2 per door.

2.5.2 Cabinet Pulls

Back mounted, Stainless steel, 4 inches long, as selected from manufacturer's full range.

2.5.3 Door Catches

Dual, self-aligning, permanent magnet catches. Provide two catches on doors more than 48 inches high.

2.5.4 Drawer Slide

Heavy duty, full extension, soft-close slides rated for 100lbs loads.

Hardwood runners under centers of drawers with polymer guides fastened to backs of drawers.

2.5.5 Adjustable Shelf Support System

ANSI/BHMA A156.9, powder-coated steel standards, and surface type powder-coated steel shelf brackets, Type B04102 and Type B04112.

2.5.6 Casters

Provide casters per manufacturer's recommendations per cabinet type, refer to drawings.

2.6 COUNTERTOPS

Refer to Section 12 36 00 COUNTERTOPS.

2.7 WOOD CABINET, TABLE FABRICATION, AND CONTRUCTION

2.7.1 Construction

Provide wood-faced laboratory casework complying with SEFA 8W.

1) Bottoms of Base Cabinets: 3/4-inch- (19-mm-) thick, hardwood plywood.

2) Tops and Bottoms of Wall Cabinets and Tops of Tall Cabinets: 1-inch- (25-mm-) thick, veneer-core hardwood plywood.

3) Ends of Cabinets: 3/4-inch- (19-mm-) thick, hardwood plywood.

4) Shelves: 1-inch- (25-mm-) thick, Phenolic Composite.

5) Base Cabinet Top Frames: Full frame 3/4-by-2-inch (19-by-50-mm) solid wood with mortise and tenon or doweled connections, glued and pinned or screwed.

6) Exposed Backs of Cabinets: 3/4-inch- (19-mm-) thick, hardwood plywood.

7) Unexposed Backs of Cabinets: 1/4-inch- (6.4-mm-) thick hardboard, dadoed into sides, bottoms, and tops unless otherwise indicated.

8) Drawer Fronts: 3/4-inch- (19-mm-) thick, hardwood plywood or solid hardwood.

9) Drawer Sides and Backs: 1/2-inch- (13-mm-) thick, veneer-core hardwood plywood, with glued dovetail or multiple-dowel joints.

10) Drawer Bottoms: 1/4-inch- (6.4-mm-) thick, veneer-core hardwood plywood glued and dadoed into front, back, and sides of drawers.Use 1/2-inch- (13-mm-) thick material for drawers more than 24 inches (600 mm) wide.

11) Drawer Bodies: Steel drawer pans formed from 0.036-inch- (0.91-mm-) thick metal, metallic phosphate treated, and finished with manufacturer's standard two-coat, baked-enamel finish consisting of prime coat and thermosetting topcoat with a minimum dry film thickness of 1 mil (0.025 mm) for topcoat and 2 mils (0.05 mm) for system.

12) Doors 48 Inches (1200 mm) High or Less: 3/4 inch (19 mm) thick, with particleboard or MDF cores and hardwood face veneers and crossbands.

a. Provide solid-hardwood stiles and rails.

2.7.2 Utility-Space Framing

Steel framing units consisting of two steel slotted channels complying with MFMA-4, not less than 1-5/8 inches (41 mm) square by 0.105-inch (2.66-mm) nominal thickness, that are connected at top and bottom by U-shaped brackets made from 1-1/4-by-1/4-inch (32-by-6-mm) steel flat bars. Framing units may be made by welding channel material into rectangular frames instead of using U-shaped brackets.

2.7.3 Filler and Closure Panels

Provide where indicated and as needed to close spaces between casework and walls, ceilings, and equipment. Fabricate from same material and with same finish as adjacent exposed casework surfaces unless otherwise indicated

1) Provide knee-space panels (modesty panels) at spaces between base cabinets, where cabinets are not installed against a wall or where space is not otherwise closed.

2) Provide utility-space closure panels at spaces between base cabinets where utility space would otherwise be exposed, including spaces below countertops.

3) Provide closure panels at ends of utility spaces where utility spaces would otherwise be exposed

4) Base Cabinet Side Panels can be extended to 29" to eliminate the use of a filler panel and provide a continuous cabinet look if the utility space is determined to be unused.

2.8 LABORATORY CASEWORK SYSTEM

2.8.1 General

Provide casework manufacturer's standard integrated system that includes support framing, suspended modular wood cabinets, filler and closure panels, wall panels, undercabinet task-lighting fixtures, undershelf task-lighting fixtures, countertops, and fittings needed to assemble system. System includes hardware and fasteners for securing support framing to permanent construction.

1) Cabinets can be removed and reinstalled without use of special tools for relocation within system.

2) Base cabinets can be removed without providing temporary support for, or removing, countertops.

3) Sinks are supported independent of base cabinets.

4) Support framing has provision for fastening pipe supports at utility space in not more than 1-inch (25-mm) increments.

5) System includes filler and closure panels to close spaces between support framing, cabinets, shelves, countertops, floors, and walls unless otherwise indicated. Fabricate from same material and with same finish as adjacent exposed cabinet surfaces unless otherwise indicated.

2.8.2 Support Framing

Casework manufacturer's standard system consisting of vertical supports and connecting braces and rails as follows:

1) Cabinets, shelves, and countertops are supported from vertical supports except where floor-supported base cabinets are indicated. Vertical positioning of supported cabinets, shelves, and countertops can be varied in 1-inch (25-mm) increments through full height of supports.

2) Vertical supports rest on adjustable leveling bases and are secured to floor with metal clips fastened to floor.

3) Vertical supports are installed with braces and rails, connecting them to each other and to permanent building walls to create a stable, rigid structure with framed utility spaces where indicated.

4) Install Shelving such that the Shelving Support Framing is anchored to the Benchtop.

2.8.3 Undershelf Task-Lighting

1) Lamp Type: LED with switch and heavy-duty cord and plug.

2) Finish: Baked enamel.

3) Diffusers: Virgin acrylic with high resistance to yellowing and other changes from aging, heat, and UV radiation.

2.9 TABLETOPS, SHELVES, SINKS, AND FAUCETS

2.9.1 Countertops

Refer to Section 12 36 00 COUNTERTOPS.

2.9.2 General

Provide sizes indicated or laboratory casework manufacturer's closest standard size of equal or greater volume, as approved by Architect.

1) Outlets: Provide with strainers and tailpieces, NPS 1-1/2 (DN 40), unless otherwise indicated.

2) Overflows: As indicated on drawings.

2.9.3 Preparation

Sand lumber and plywood before assembling. Sand edges of doors, drawer fronts, and molded shapes with profile-edge sander. Sand after assembling for uniform smoothness at least equivalent to that produced by 220-grit sanding and without machine marks, cross sanding, or other surface blemishes.

2.9.4 Staining

Remove fibers and dust and apply stain to exposed and semiexposed surfaces as necessary to match approved Samples. Apply stain to produce a consistent appearance. Apply wash-coat sealer before applying stain to closed-grain wood species.

2.9.5 Chemical-Resistant Finish

Apply laboratory casework manufacturer's standard two -coat, chemical-resistant, transparent finish. Sand and wipe clean between coats.

Topcoat(s) may be omitted on concealed surfaces.

1) Chemical and Physical Resistance of Finish System: Finish complies with acceptance levels of cabinet surface finish tests in SEFA 8W.

Acceptance level for chemical spot test shall be no more than for Level 3 conditions.

2.9.6 Phenolic-Composite Countertops, Tabletops and Shelves

1) Countertop Fabrication: Refer to Section 12 36 00 COUNTERTOPS.

2) Tabletop Fabrication:

a. Flat Configuration: 1 inch (25 mm) thickness with continuous drip groove on underside at perimeter.

b. Edges and Corners: Beveled.

3) Shelf Configuration: Flat, ¾ inch (19 mm) thick.

a. Edges and Corners: Beveled.

2.9.7 Stainless Steel Sinks

Made from stainless-steel sheet, not less than 0.050-inch (1.27-mm) nominal thickness. Fabricate with corners rounded and coved to at least 5/8-inch (16-mm) radius. Slope sink bottoms to outlet. Provide continuous butt-welded joints.

1) Provide double-wall construction for sink partitions with top edge rounded to at least 1/2-inch (13-mm) diameter.

2) After fabricating and welding, grind surfaces smooth and polish to produce uniform finish with no cross scratches or evidence of welds.

Passivate and rinse surfaces; remove embedded foreign matter and leave surfaces clean.

3) Factory punch holes for fittings.

4) Provide with stainless-steel strainers and tailpieces.

5) Provide with integral rims except where located in stainless-steel countertops.

6) Apply 1/8-inch- (3-mm-) thick coating of heat-resistant, sound-deadening mastic to undersink surfaces.

2.9.8 Cup Sinks

Provide in material indicated, 3-by-6-inch (75-by-150-mm) oval.

1) Polypropylene Cup Sinks: Provide with polypropylene strainers and integral tailpieces.

2) Stainless-Steel Cup Sinks: Provide with stainless-steel strainers and integral tailpieces.

2.9.9 Shall provide 3 water lines

1) (1) hot process water line

2) (1) cold water line

3) (1) DI processed water line

4) Provide with a shelf/mount for an RO/DI water system and a GFCI duplex receptacle.

2.9.10 Sink Cabinet at Dishwasher

Provide water, power, and drain connections for GFE dishwasher, as well as a RO/DI water system and connection.

2.9.11 Valves

1) Provide Regulators upstream of each point of service in piping before process gasses to downregulate per instrument requirement.

2) Corrosive and flammable gasses must have a shut off valve upstream of the regulators to allow for replacement of the regulator in case of failure.

2.10 LABORATORY ACCESSORIES

2.10.1 Reagent Shelves

Provide as indicated, fabricated from same material as adjacent countertop unless otherwise indicated.

2.10.2 Lattice Assembly

Fiberglass, vertical and horizontal rod lattice assembly with 3/4-inch- (19-mm-) diameter rods at approximately 12 inches (300 mm) o.c. with two flush socket receptacles for mounting.

1) Size: 36 inches (1200 mm) wide by 24 inches(900 mm) high.

2.10.3 Gown Rack

Provide Wall Mounted Stainless Steel Garment Hook Rack approved for clean room application as Shown on Drawings.

2.10.4 Pegboards

1) All sink areas will incorporate pegboards with drip troughs.

2) Pegboards: Polypropylene or phenolic-composite pegboards with removable polypropylene pegs and stainless-steel drip troughs with drain outlet.

2.11 WATER AND LABORATORY GAS SERVICE FITTINGS

2.11.1 Service Fittings

Provide units that comply with SEFA 7, "Recommended Practices for Fixtures." Provide fittings complete with washers, locknuts, nipples, and other installation accessories. Include wall and deck flanges, escutcheons, handle extension rods, and similar items.

1) Provide units that comply with "Vandal-Resistant Faucets and Fixtures" recommendations in SEFA 7.

2.11.2 Materials

Fabricated from cast or forged red brass unless otherwise indicated.

1) Reagent-Grade Water Service Fittings: Polypropylene, PVC, or PVDF for parts in contact with water.

2.11.3 Finish

Acid- and solvent-resistant powder coating complying with requirements in SEFA 7 for corrosion-resistant finishes.

1) Provide chemical-resistant powder coating in laboratory casework manufacturer's standard metallic brown, aluminum, white, or other color as approved by Architect.

2.11.4 Water Valves and Faucets

Provide units complying with ASME A112.18.1/CSA B125.1, with renewable seats, designed for working pressure up to 80 psig (550 kPa).

1) L681 and L684, 6" Width.

2) Tin-Lined.

3) Deck Mounted.

4) Self-Closing Lever Handle.

5) Vacuum Breakers: Provide ASSE 1035 vacuum breakers on water fittings with serrated outlets.

6) Aerators: Provide aerators on water fittings that do not have serrated outlets.

7) Self-Closing Valves: Provide self-closing valves where indicated.

8) Faucet Knobs should be spring loaded for DI water system, except where making instrument connections - DI water polishers and Dishwasher DI connections.

2.11.5 Ground-Key Cocks

Tapered core and handle of one-piece forged brass, ground and lapped, and held in place under constant spring pressure. Provide units designed for working pressure up to 40 psig (280 kPa), with serrated outlets.

2.11.6 Needle Valves

Provide units with renewable, self-centering, floating cones and renewable seats of stainless steel or Monel metal, with removable serrated outlets.

1) Provide units designed for working pressure as indicated on Drawings.

2) Process gas fixtures at benches should terminate in Needle Valves.

3) Provide Double Sided as shown in Drawings.

2.11.7 Hand of Fittings

Furnish right-hand fittings unless fitting designation is followed by "L."

2.11.8 Handles

Provide three- or four-wing, molded-plastic or powder-coated-metal handles for valves unless otherwise indicated.

1) Provide lever-type handles for ground-key cocks. Lever handle aligns with outlet when valve is closed and is perpendicular to outlet when valve is fully open.

2) Provide lever-type handles for ball valves unless otherwise indicated.

Lever handle aligns with outlet when valve is closed and is perpendicular to outlet when valve is fully open.

3) Provide heat-resistant plastic handles for steam valves.

4) Provide knurled, molded-plastic handles for needle valves.

2.11.9 Service-Outlet Identification

Provide color-coded plastic discs with embossed identification, secured to each service-fitting handle to be tamper resistant. Comply with SEFA 7 for colors and embossed identification.

2.12 ELECTRICAL SERVICE FITTINGS

2.12.1 Service Fittings, General

Provide units complete with metal housings, receptacles, switches, cover plates, accessories, and gaskets required for mounting on laboratory casework.

2.12.2 Receptacles

2.12.2.1 Duplex Convenience Receptacles

125 V, 20 A; NEMA WD 6, Configuration 5-20R.

1) Standards: Comply with NEMA WD 1, UL 498, and FS W-C 596.

2.12.2.2 Quad Convenience Receptacles

125 V, 20 A; NEMA WD 6, Configuration 5-20R.

1) Standards: Comply with NEMA WD 1, UL 498, and FS W-C 596.

2.12.2.3 Duplex GFCI Convenience Receptacles

125 V, 20 A; NEMA WD 6, Configuration 5-20R, feed through type with integral LED indicator light.

1) Standards: Comply with NEMA WD 1, UL 498, UL 943 Class A, and FS W-C 596.

2.12.2.4 Isolated-Ground, Duplex Convenience Receptacles

125 V, 20 A; NEMA WD 6, Configuration 5-20R.

1) Standards: Comply with NEMA WD 1, UL 498, and FS W-C 596.

2.12.2.5 Color of Receptacles

As selected by Architect unless otherwise indicated or required by NFPA 70.

2.12.3 Switches

2.12.3.1 Single-Pole Switches

120/277 V, 20 A.

1) Standards: Comply with NEMA WD 1, UL 20, and FS W-S 896.

2.12.3.2 Two-Pole Switches

120/277 V, 20 A.

1) Standards: Comply with NEMA WD 1, UL 20, and FS W-S 896.

2.12.3.3 Key-Operated Switches

120/277 V, 20 A; single pole, with factory-supplied key in lieu of switch handle.

1) Standards: Comply with NEMA WD 1, UL 20, and FS W-S 896.

2.12.3.4 Color of Switches

As selected by Architect unless otherwise indicated or required by NFPA 70.

2.12.4 Cover Plates

Provide satin-finish, Type 304, stainless-steel cover plates with formed, beveled edges.

2.12.5 Cover-Plate Identification

Use 1/4-inch- (6-mm-) high letters unless otherwise indicated. For stainless steel or chrome-plated metal, stamp or etch plate and fill in letters with black enamel.

2.12.5.1 Provide at every cover plate

1) Receptacles other than standard 125-V duplex, grounding type.

2) Switches and thermal-overload switches.

3) Receptacles, switches, and other locations indicated.

2.12.5.2 Provide the following information

1) Voltage and phase for receptacles other than standard 125-V duplex, grounding type.

2) Indicate equipment being controlled by switches and thermal-overload switches.

3) Number of the breaker in panelboard that controls device.

2.12.6 Fitting Types

2.12.6.1 Line-Type Fittings

Provide with cast-metal boxes with threaded holes for mounting on rigid steel conduit. Provide cover plates same size as boxes.

2.12.6.2 Recessed-Type Fittings

Provide with galvanized-steel boxes.

2.12.6.3 Laboratory Electrical Service Pedestal

Provide a 12" Double Sided Service Pedestal.

1) Vertical Mount

2) Provide Duplex, Simplex, GFCI, Decora, USB, Communication Jacks as shown in electrical Drawings.

3) Provide Multiple Options for Size Selection.

2.12.6.4 Finishes for Service-Fitting Components and Laboratory Electrical Service Pedestals

Provide housings or boxes for pedestal- and line-type fittings with manufacturer's standard baked-on, chemical-resistant enamel in color as selected by Architect from manufacturer's full range.

PART 3 EXECUTION

3.1 EXAMINATION

Verify adequacy of support framing and anchors.

Verify that service connections are correctly located and of proper characteristics.

Examine areas, with Installer present, for compliance with requirements for installation tolerances, location of reinforcements, and other conditions affecting performance of the Work.

Site Verification of Environmental Conditions:

Do not deliver casework until the following conditions have been met:

1) Building has been enclosed (windows and doors sealed and weather-tight).

2) An operational HVAC system that maintains temperature and humidity at occupancy levels has been put in place.

3) Ceiling, overhead ductwork, piping, and lighting have been installed.

4) Installation areas do not require further "wet work" construction.

Proceed with installation only after unsatisfactory conditions have been corrected.

3.2 INSTALLATION OF CASEWORK AND CABINETS

Comply with installation requirements in SEFA 2. Install level, plumb, and true in line; shim as required using concealed shims. Where laboratory casework abuts other finished work, apply filler strips and scribe for accurate fit, with fasteners concealed where practical. Do not exceed the following tolerances:

1) Variation of Tops of Base Cabinets from Level: 1/16 inch in 10 feet (1.5 mm in 3 m).

2) Variation of Bottoms of Upper Cabinets from Level: 1/8 inch in 10 feet (3 mm in 3 m).

3) Variation of Faces of Casework from a True Plane: 1/8 inch in 10 feet (3 mm in 3 m).

4) Variation of Adjacent Surfaces from a True Plane (Lippage): 1/32 inch (0.8 mm).

5) Variation in Alignment of Adjacent Door and Drawer Edges: 1/16 inch (1.5 mm).

3.2.1 Large Components

Ensure that large components can be moved into final position without damage to other construction.

Use anchoring devices to suit conditions and substrate materials encountered. Use concealed fasteners to the greatest degree possible. Use exposed fasteners only where allowed by approved shop drawings, or where concealed fasteners are impracticable.

Set casework items plumb and square, securely anchored to building structure.

3.2.2 Utility-Space Framing

Secure to floor with two fasteners at each frame. Fasten to partition framing, wood blocking, or metal reinforcements in partitions and to base cabinets.

3.2.3 Base Cabinets

Fasten cabinets to utility-space framing, partition framing, wood blocking, or reinforcements in partitions, with fasteners spaced not more than 16 inches (400 mm) o.c. Bolt adjacent cabinets together with joints flush, tight, and uniform.

1) Where base cabinets are installed away from walls, fasten to floor at toe space at not more than 24 inches (600 mm) o.c. and at sides of cabinets with not less than two fasteners per side.

2) Examine floor levelness and flatness of installation space. Do not proceed with installation if encountered floor conditions required more than 3/4 inch (19 mm) levelling adjustment. When installation conditions are acceptable, for each space, establish the high point of the floor. Set and make level and plumb first cabinet in relation to this high point.

3.2.4 Wall Cabinets

Examine wall surfaces in installation space. Do not proceed with installation if the following conditions are encountered:

1) Maximum Variation of finished gypsum board surface from true flatness exceeds 1/8 inch in 10 feet (3 mm in 3 m); in any direction.

Fasten to hanging strips, and/or wall substrates. Fasten each cabinet through back, near top, at not less than 16 inches (407 mm) on center.

Install hardware uniformly and precisely.

Adjust operating hardware so doors and drawers align and operate smoothly without warp or bind and contact points meet accurately. Lubricate operating hardware as recommended by manufacturer.

Install hardware uniformly and precisely. Set hinges snug and flat in mortises.

Coordinate installation of work of this section with installation of fume hoods; laboratory equipment.

3.3 INSTALLATION OF COUNTERTOPS

Refer to Section 12 36 00 COUNTERTOPS.

3.4 INSTALLATION OF CUP SINKS

Comply with installation requirements in SEFA 2.

Semi flush Installation of Stainless-Steel Sinks: Before setting, apply sink and countertop manufacturers' recommended sealant under rim lip and along top. Remove excess sealant while still wet and finish joint for neat appearance.

Surface Installation of Phenolic Resin Cup Sinks: Set sink in sealant or adhesive. Use procedures and products recommended by sink and countertop manufacturers. Remove excess sealant or adhesive while still wet and finish joint for neat appearance.

Install countertops in one true plane, with ends abutting at hairline joints, and no raised edges.

Deliver sinks; cup sinks; and service fittings in properly marked boxes, accompanied with written instructions, for installation by appropriate trade contractor(s).

Replace units that are damaged, including those that have damaged finishes.

3.5 INSTALLATION OF LABORATORY ACCESSORIES

Install accessories according to Shop Drawings, installation requirements in SEFA 2, and manufacturer's written instructions.

Securely fasten adjustable shelving supports, stainless-steel shelves, and pegboards to partition framing, wood blocking, or reinforcements in partitions.

Install shelf standards plumb and at heights to align shelf brackets for level shelves. Install shelving level and straight, closely fitted to other work where indicated.

Install Shelving such that the Shelving Support Framing is anchored to the Benchtop.

Provide Shelving Options for Island Center Shelves and Shelf Retainer Rods Decision by Architect.

Securely fasten pegboards to partition framing, wood blocking, or reinforcements in partitions.

3.6 INSTALLATION OF SERVICE FITTINGS

Comply with requirements in other Sections for installing water and laboratory gas service fittings and electrical devices.

Install fittings according to Shop Drawings, installation requirements in SEFA 2, and manufacturer's written instructions. Set bases and flanges of sink- and countertop-mounted fittings in sealant recommended by manufacturer of sink or countertop material. Securely anchor fittings to laboratory casework unless otherwise indicated.

3.7 ADJUSTING

Adjust operating parts, including doors, drawers, hardware, and fixtures to function smoothly.

3.8 CLEANING AND PROTECTING

Clean finished surfaces, touch up as required, and remove or refinish damaged or soiled areas to match original factory finish, as approved by Architect.

Do not permit finished casework to be exposed to continued construction activity.

Protect countertop surfaces during…