Section 12345 LABORATORY FURNITURE

Section 12345

LABORATORY FURNITURE

PART 1 - GENERAL

1.1 THE REQUIREMENT

A. This section covers laboratory furniture to be furnished and installed in the Laboratory including base cabinets, worktops and backsplash, wall cabinets, full height cabinets, fume hood, rubber base at floor cabinets, and other furnishings as indicated on the Drawings. All water service fixtures, traps, strainers, overflows, plugs, and tailpieces; and all electrical service fixtures installed in the laboratory furniture or countertops shall be furnished with the laboratory furniture.

1.2 GENERAL

A. Except as otherwise, all laboratory furniture items are designated on the Drawings by catalog numbers of the Kewaunee Manufacturing Company. The catalog numbers identify type and quality desired. Equivalent items by other manufacturers may be furnished subject to acceptance by the ENGINEER.

B. Where equipment is specified or described by using the name of a proprietary product or the name of a particular manufacturer or vendor, the specified item mentioned shall be understood as establishing the type, the function, and quality desired. Other manufacturers’ products will be accepted provided sufficient information is submitted to allow ENGINEER to determine that the products proposed are equivalent to those named. Such items shall be submitted for review by the procedure set forth in the submittals section.

C. The general arrangement and dimensions shall be as indicated on the Drawings. D. Rubber cove base shall be provided and installed by CONTRACTOR.

1.3 SUBMITTALS

A. Detailed Drawings, Specifications, descriptive data, and complete information concerning all laboratory furniture, fixtures, materials, and appurtenances shall be submitted in accordance with the submittals section. Submittals shall include manufacturer's name, catalog numbers, materials, construction details, and other pertinent data.

B. The Drawings shall show dimensions, installation details, and relation to adjoining and related work where close fitting is required, and shall show reinforcement, anchorage, and other details required for proper installation. The Drawings shall also include plumbing roughing-in data where necessary.

1.4 COLOR SELECTION

A. Colors shall be selected by the ENGINEER from manufacturer’s standard color line.

1.5 FINISHES

A. All exposed exterior and interior coatings shall be a smooth, satin luster finish highly resistant to acids, alkalis, salts, solvents, water, and abrasion. The finish shall be as selected by the ENGINEER from the manufacturer's standard line of colored finishes. The CONTRACTOR shall submit sample panels.

B. Finish of Metal Surfaces

1. All steel used in laboratory furniture shall be given a corrosion-resistant finish after fabrication of component parts. Adhesion of finish to the metal shall be implemented by multistage cleaning and bonding treatment. Exposed surfaces shall be given as many filler coats as required to provide a smooth and uniform surface for painting. A prime coat shall then be applied and baked on. The highest quality baked enamel shall be applied over the prime coat. Alternately, fusion bonded epoxy per

09800, Protective Coating, System 106 is acceptable.

PART 2 - PRODUCTS

2.1 MATERIALS

A. Materials used in construction of the laboratory furniture shall comply with the following requirements:

1. Sheet Steel:

a. Prime grade, cold-rolled, stretcher leveled furniture stock.

2. Stainless Steel:

a. AISI Type 316 or 304, as indicated.

3. Glass:

a. ASTM C1036, Type I, Class 1, Q3, plate glass.

4. Tempered Glass:

a. ASTM C1048, 1/4 inch thick, fully tempered; L-O-F "Tuf-flex", Permaglas

Safeglaze", or Pittsburgh "Herculite", Or Equal.

5. Top Material:

a. Molded modified epoxy resin, matte finish, black color.

6. Coved Rubber Base:

a. Federal Spec SS-W-40a, Type I, Style A, 0.125 inch thick.

2.2 FURNITURE CONSTRUCTION

A. All laboratory furniture shall be the product of a manufacturer regularly producing high quality laboratory furniture for at least the last five years. Unless otherwise required, laboratory furniture shall be steel. Laboratory furniture shall be standing fixed height metal casework with applied tops and curbs as indicated on the Drawings.

B. Construction:

1. All parts shall be accurately die formed and assembled in jigs. Units shall be square, rigid, and adequately reinforced. Welded joints shall be notched and tightly fitted, with exposed welds ground smooth. All exposed surfaces shall be polished smooth before finishing.

2. When assembled, each cabinet shall be an integral unit which will fit with congruity into the assembly of laboratory furniture, but which may be readily relocated. Adjoining units shall be connected with concealed fasteners. All units extending to the floor shall be equipped with leveling threaded adjusters. All drawers and doors of similar sizes shall be interchangeable.

3. Metal gauges used herein are minimum thicknesses and refer to US Standard gauge.

C. Base Cabinets:

1. Backs of base cabinets shall be removable from inside to provide access to service piping and shall be provided with flanged sides to ensure rigidity. Bottoms shall be welded on all sides and shall have access holes with cover plates over the leveling screws. Cabinets shall be suitably reinforced at each bottom corner. Bodies of cabinets shall be 18-gauge steel, and side panels shall be provided.

2. Sink cabinets shall have ventilating louvers. Sink supports shall have threaded adjusting devices.

D. Knee-Space Units:

1. Frames for knee-space units shall be 16-gauge steel. Knee-space units shall conform to the style and construction of adjacent base cabinets. Cross rails shall be spaced not more than 24 inches apart and securely welded to aprons. Knee-space frames shall be attached to adjacent base cabinets by bolting through the end aprons. Knee-space units shall be provided with backs to conceal service piping. Backs shall be removable from the front to provide access to service piping.

E. Wall Cabinets:

1. Wall cabinets shall be 18-gauge steel. End panels shall be of one-piece construction, formed at the front and rear into corner posts. Backs shall be securely welded to the end panels, top, and bottom to prevent lateral racking. Bottoms shall be full width and depth of cabinet and shall be securely welded to the side panels. Wall-hung cabinets shall be provided with a double bottom. Tops shall be securely welded to the end panels and shall be flanged downward at the front to accommodate sliding doors.

F. Drawers:

1. Drawer fronts shall be of double wall construction. All drawers shall be provided with rubber bumpers and with stops which prevent accidental drawer removal. Drawers shall be easily removable without the use of tools. Each drawer shall be supported on ball bearing or nylon rollers operating in removable and adjustable steel channels. Drawers shall be 20-gauge steel, with drawer suspension channels of 16- gauge steel.

G. Doors:

1. Solid panel doors shall be of flush, double wall, sound-deadened construction with internal stiffeners and shall be 20-gauge steel.

2. Glazed doors shall have 18-gauge frames, mitered and welded at the corners. Glass shall be mounted in rubber or plastic glazing channels.

3. Swing doors shall be fitted into casework openings with 1/16 inch clearance between doors and frames. Swing door openings shall be provided with rubber bumpers at top and bottom.

4. Silent low-friction glides shall be provided at the top and bottom of each sliding door. Rubber bumper stops shall be provided at fully opened and closed positions.

5. All doors shall operate easily and quietly and shall be easily removable. H. Cabinet Shelves:

1. Shelves shall be removable and shall be supported at four points. Support brackets shall be adjustable in not to exceed 1 inch vertical increments. Ends and sides of shelves shall be formed down at least 3/4 inch and returned 1/2 inch at front and back. All shelf corners shall be smooth without sharp edges. Shelves 36 inches long or longer shall be reinforced.

I. Filler Panels:

1. Manufacturer's standard 18-gauge steel filler panels, prefinished to match adjacent furniture, shall be provided where required to complete the installation.

J. Miscellaneous Items:

1. All necessary connectors, spacers, pipe supports, and closures shall be provided as necessary for a complete installation.

K. Hardware:

1. Hardware and trim shall be best quality for the intended use. All hardware, including screws and bolts, shall be protected against corrosion by plating or painting. Drawer and door pulls shall have adequate cross section to ensure against breakage under rough use, and shall all be the same style. Either die castings with satin chrome finish or black semi-gloss plastic material molded over a solid brass core extending through the entire pull will be acceptable. Sliding door pulls shall be recessed.

2. Hinges shall be chromium-plated steel, 2-1/2 inches high, five-knuckle institutional heavy-duty type, with brass pins.

3. Door catches shall be nylon roller catches. L. Pegboards:

1. Pegboards shall be made from Kewaunee "Kemresin" material at least 3/4 inch thick, with black polypropylene pegs, Or Equal.

2.3 TOP MATERIALS

A. Table tops and splashbacks shall be modified epoxy resin. Configuration of the tops and splashbacks shall be as indicated.

B. Modified Epoxy Table Tops:

1. Table tops and splashbacks to be of modified epoxy resin shall be at least 1 inch thick and shall be furnished in as large sections as practicable. Tops of wall tables shall extend 1 inch beyond face of the base unit. All table tops shall be field jointed into continuous tops. Field joints shall be made with an acid, alkali, and solvent resistant cement. Field joints shall be at least as strong as the top material. Working surfaces shall be provided with a 1/4 inch raised edge along all exposed top edges and on all exposed corners. Color of the modified epoxy shall be black.

C. Accessories:

1. Table tops shall have a suitable opening for each sink. Holes shall be drilled as necessary for service fixtures.

2.4 LABORATORY EQUIPMENT

A. Pegboards shall be made from Kewaunee "Kemresin" material at least 3/4 inch thick, with black polypropylene pegs, Or Equal. Provide field mounted drip trough constructed of stainless steel and as called out on the drawings.

2.5 SINKS

A. Sinks for installation in epoxy resin tops shall be single-piece solid castings of epoxy resin and shall be Duriron Company "Durcon", Kewaunee "Kemresin" Or Equal. Sink drainboards shall be made of material identical and continuous with adjoining table tops and shall be made of identical material with a watertight joint between each sink and the drainboard (table top) or box curb.

2.6 FUME HOODS

A. The fume hood shall be Kewaunee "Dynamic Barrier LCV Supreme Air" low constant air volume bench-type fume hood, Or Equal. The fume hood of the type and size indicated by model number on the drawings shall be provided and installed at locations indicated. The understructure of the fume hood assemblies shall be of steel construction, conforming to the applicable requirements for steel base cabinets, except where acid storage cabinets are required.

B. The fume hood superstructure shall be fabricated of 18-gauge steel. The fume hood airfoil shall be of 12 gage steel, mount flush to the work top, and direct an air stream across the work surface to prevent back flow of air. All parts shall be accurately die formed and assembled in jigs. The unit shall be square, rigid, and adequately reinforced. Welded joints shall be notched and tightly fitted, with exposed welds ground smooth. All exposed surfaces shall be polished smooth before finishing.

C. The fume hoods shall have dual sashes, and overhead light fixture with switch. The hood lining, baffle, and adjustment strips shall be modified epoxy resin at least 1/4 inch thick. Lining shall be attached with 18-8 stainless steel fasteners. No metal other than

18-8 stainless steel shall be exposed on the inside of the hood superstructure. A stainless steel collar for attachment of exhaust ductwork shall be furnished. The working surface shall be Duriron Company "Durcon" or Kewaunee "Kemresin", Or Equal. The working surface shall be prepared for sinks or cup sinks as indicated. The superstructure shall be completely rigid. The adjustments on the baffle shall work smoothly and easily.

D. The sash shall be a dual synchronized system with an upper vertical frameless sash and a lower combination sash. The exhaust airflow shall be designed to provide 100 FPM through the maximum horizontal sash opening, and shall not require more than 250 cubic feet per minute. The sash system shall be designed to move synchronously with a single counterweight. The top sash shall move upward at half the speed of the lower sash. Sashes shall have 7/32 inch laminated safety glass.

E. The light fixture shall consist of a two-tube fluorescent unit of the longest practical length shielded from the interior of the hood by a tempered glass panel.

F. Accessories provided with each fume hood shall include two-tube fluorescent light fixtures; oval cup sink with P-trap unless otherwise indicated on drawings; one remote- controlled deionized water fixture; one remote-controlled air cock; one remote-controlled vacuum cock; two remote controlled air cocks for inert gases: two exterior duplex 115 volt outlets on the face; one exterior 220 volt outlet; and one light switch. All components shall be factory installed and wired.

G. Each fume hood shall be installed complete with a fume hood face velocity airflow alarm "Air Alert 600" as manufactured by Kewaunee, Or Equal. The alarm wiring and dc converter shall be factory installed and concealed from view.

2.7 SERVICE FIXTURES

A. The general arrangement and locations of the service fixtures shall be as indicated on the Drawings. A watertight joint shall be made between each pedestal or deck-mounted service fixture and the table or counter top.

B. Plumbing Fixtures:

1. Water fixtures shall be brass finished in polished heavy chrome and shall be designed for laboratory use. Each fixture shall be supplied with a molded plastic index button which shall indicate the service by lettering and color.

2. Water fixtures shall have renewable seats and washers. Gooseneck spouts shall be heavy seamless brass tubing finished in heavy polished chrome. Aerators shall be provided on all water faucets which are not required to be equipped with hose connectors.

3. Traps shall be polypropylene. Each trap shall be swivel drum type P-trap. Sink drain fittings shall be Duriron Company "Durcon" Or Equal and shall be provided with plug, removable strainer disc, and beehive overflow. The tailpiece of each drain fitting shall be provided with a locknut and an adapter for connection to the drain piping.

4. Plumbing fixtures to be furnished shall include the following: Component Catalog Number

Air, vacuum, or gas cock, W-260 (single)

deck mounted W-266 (double)

Gooseneck water faucet, W-0340-OV

deck-mounted, fixed

Drench shower and eyewash W-0936-00

5. The fixtures listed above are designated by the Kewaunee Manufacturing Company catalog numbers to identify the type and quality desired. Equivalent items by other manufacturers may be furnished subject to acceptance by the ENGINEER.

2.8 COVED RUBBER BASE

A. Provide 16-gauge sheet metal backing applied to base cabinets so that there is continuous support for the rubber base. Scribe sheet metal backing at floor so that there is not gap due to unevenness of floor.

PART 3 - EXECUTION

3.1 INSTALLATION

A. Skilled workers shall install laboratory furniture, fixtures, and equipment. All items shall be shipped, handled, and installed by methods that will prevent damage of any kind. Each unit of furniture shall be erected in proper position, and fixtures shall be properly installed on the furniture.

B. Each unit of laboratory furniture shall be installed level and plumb. Leveling adjusters shall be adjusted and locked in position. Cove base shall not be installed until after laboratory furniture has been completely checked.

C. Base shall not be installed until the surfaces against which they are applied are dry and clean. Base shall be set in accordance with the manufacturer’s directions and continuously cemented in place. All joints and angles shall be neat and tight. Base, throughout its entire length, shall have top and bottom edges in firm contact with base cabinet.