123600 Countertops.pdf

Bldg. 500 – Renovate 3B 12-01-18 Project No. 613-19-101

12 36 00 - 1 Submission Bid Documents July 16, 2020

SECTION 12 36 00

COUNTERTOPS

PART 1 - GENERAL

1.1 DESCRIPTION

A. This section specifies casework countertops with integral accessories.

B. Integral accessories include:

1. Sinks with traps and drains.

1.2 RELATED WORK

A. DIVISION 22, PLUMBING.

B. DIVISION 26, ELECTRICAL.

C. Equipment Reference Manual for SECTION 12 36 00, COUNTERTOPS.

1.3 SUBMITTALS

A. Submit in accordance with SECTION 01 33 23, SHOP DRAWINGS, PRODUCT

DATA, AND SAMPLES.

B. Shop Drawings

1. Show dimensions of section and method of assembly.

2. Show details of construction at a scale of ½ inch to a foot.

C. Samples:

1. 150 mm (6 inch) square samples each top.

2. Front edge, back splash, end splash and core with surface material and booking.

1.4 APPLICABLE PUBLICATIONS

A. Publications listed below form a part of this specification to the extent referenced. Publications are referenced in the text by the basic designation only.

B. American Hardboard Association (AHA):

A135.4-95...............Basic Hardboard

C. Composite Panel Association (CPA):

A208.1-09...............Particleboard

D. American Society of Mechanical Engineers (ASME):

A112.18.1-12............Plumbing Supply Fittings

A112.1.2-12.............Air Gaps in Plumbing System

A112.19.3-08(R2004).....Stainless Steel Plumbing Fixtures (Designed for

Residential Use)

E. American Society for Testing and Materials (ASTM):

A167-99 (R2009).........Stainless and Heat-Resisting Chromium-Nickel

Steel Plate, Sheet and Strip

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A1008-10................Steel, Sheet, Cold-Rolled, Carbon, Structural, High Strength, Low Alloy

D256-10.................Pendulum Impact Resistance of Plastic

D570-98(R2005)..........Water Absorption of Plastics

D638-10.................Tensile Properties of Plastics

D785-08.................Rockwell Hardness of Plastics and Electrical

Insulating Materials

D790-10.................Flexural Properties of Unreinforced and

Reinforced Plastics and Electrical Insulating

Materials

D4690-99(2005)..........Urea-Formaldehyde Resin Adhesives

F. Federal Specifications (FS):

A-A-1936................Adhesive, Contact, Neoprene Rubber

G. U.S. Department of Commerce, Product Standards (PS):

PS 1-95.................Construction and Industrial Plywood

H. National Electrical Manufacturers Association (NEMA):

LD 3-05.................High Pressure Decorative Laminates

PART 2 - PRODUCTS

2.1 MATERIALS

A. Plastic Laminate: NEMA LD 3.

1. Concealed backing sheet Type BKL.

2. Decorative surfaces:

a. Flat components: Type GP-HGL.

b. Post forming: Type PF-HGP.

3. Chemical Resistant Surfaces

a. Flat components: Type GP-HGL.

b. Post forming: Type PF-HGP.

c. Resistance to reagents:

1) Test with five 0.25 mil drops remaining on surface for 16 hours followed by washing off with tap water, then cleaned with liquid soap and water, dried with soft cotton cloth and then cleaned with naphtha.

2) No change in color, surface texture, and original protectability remaining from test results of following reagents:

98% Acetic Acid Butyl Alcohol Acetone

90% Formic Acid-- Benzine Chloroform

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28% Ammonium Hydroxide Xylene Carbon Tetrachloride

Zinc Chloride (Sat.) Toluene Cresol

Sodium Carbonate (Sat.) Gasoline Ether

Calcium Hypochlorite (Sat.)

Kerosene Cottonseed Oil

Sodium Chloride (Sat.) Mineral Oil 40% Formaldehyde

Methyl Alcohol Ethyl Acetate Trichlorethylene

Ethyl Alcohol Amyl Acetate Monochlorobenzine

3) Superficial effects only: Slight color change, spot, or residue only with original protectability remaining from test results of following reagents:

77% Sulfuric Acid 37% Hydrochloric Acid 85% Phenol

33% Sulfuric Acid 20% Nitric Acid Furfural

85% Phosphoric Acid 30% Nitric Acid Dioxane

4) Minimum height of impact resistance: 300 mm (12 inches).

B. Basis of Design - Molded Resin (Corian):

1. Non-glare epoxy resin or furan resin compounded and cured for minimum physical properties specified:

Flexural strength 70 MPa (10,000 psi) ASTM D790

Rockwell hardness 105 ASTM D785

Water absorption, 14 hours (weight)

.01% ASTM D570

2. Material of uniform mixture throughout.

C. Stainless Steel: ASTM A167, Type 304.

D. Sheet Steel: ASTM A1008, cold rolled, Class 1 finish, stretcher leveled.

E. Particleboard: CPA A208.1, Grade 2-M-2.

F. Hardwood Countertop: Solid maple, clear grade except where otherwise specified.

G. Hardboard: ANSI/AHA A135.4, Type I, tempered, fire retardant treated, smooth surface one side.

H. Adhesive

1. For plastic laminate FS A-A-1936.

2. For wood products: ASTM D4690, unextended urea resin or unextended melamine resin, phenol resin, or resorcinol resin.

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3. For Field Joints:

a. Epoxy type, resistant to chemicals as specified for plastic laminate laboratory surfaces.

b. Fungi resistant: ASTM G-21, rating of 0.

I. Fasteners:

1. Metals used for welding same metal as materials joined.

2. Use studs, bolts, spaces, threaded rods with nuts or screws suitable for materials being joined with metal splice plates, channels or other supporting shape.

J. Solid Polymer Material:

1. Filled Methyl Methacrylic Polymer.

2. Performance properties required:

Property Result Test

Elongation 0.3% min. ASTM D638

Hardness 90 Rockwell M ASTM D785

Gloss (600 Gordon) 5-20 NEMA LD3.1

Color stability No change NEMA LD3 except 200 hour

Abrasion resistance

No loss of pattern Max wear depth 0.0762 mm (0.003 in) - 10000 cycles

NEMA LD3

Water absorption weight (5 max)

24 hours 0.9 ASTM D-570

Izod impact 14 N·m/m (0.25 ft-lb/in)

ASTM D256

(Method A)

Impact resistance No fracture NEMA LD-3 900 mm (36") drop 1 kg (2 lb.) ball

Boiling water surface resistance

No visible change NEMA LD3

High temperature resistance

Slight surface dulling NEMA LD3

3. Cast into sheet form and bowl form.

4. Color throughout with subtle veining through thickness.

5. Joint adhesive and sealer: Manufacturers silicone adhesive and sealant for joining methyl methacrylic polymer sheet.

6. Bio-based products shall be preferred.

K. Laminar Flow Control Device

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1. Smooth bright stainless steel or satin finish, chrome plated metal laminar flow device shall provide non-aeration, clear, coherent laminar flow that will not splash in basin. Device shall also have a flow control restrictor and have vandal resistant housing.

2. Flow Control Restrictor:

a. Capable of restricting flow of 7.5 to 8.5 Lpm (2.0 to 2.2 gpm) for sinks provided in paragraph 2.2D.

b. Compensates for pressure fluctuation maintaining flow rate specified above within 10 percent between 175 and 550 kPa (25 and

80 psi).

c. Operates by expansion and contraction, eliminates mineral/sediment building up with self clearing action, and is capable of easy manual cleaning.

2.2 SINKS

A. Stainless Steel:

1. ANSI/ASME A112.19.3, Type 304.

2. Self rim for plastic laminate or similar tops with concealed fasteners.

3. Flat rim for welded into stainless steel tops.

4. Ledge back or ledge sides with holes to receive required fixtures when mounted on countertop.

5. Apply fire resistant sound deadening material to underside.

B. Stainless steel circular or oval shaped bowl.

2.3 TRAPS AND FITTINGS

A. Material as specified in DIVISION 22, PLUMBING.

B. For Stainless Steel Sinks:

1. Either cast or wrought brass or stainless steel P-traps and drain fittings; ASME A112.18.1

2. Flat strainer, except where cup strainer or overflow standpipe specified.

a. Provide cup strainer in cabinet type 1B.

b. Provide stainless steel overflow stand pipe to within 38 mm (1-

1/2 inches) of sink rim.

3. Exposed surface chromium plated finish.

C. Plaster traps:

1. Cast iron body with porcelain enamel exterior finish.

2. 50 mm (2 inch) female threaded side inlet and outlet.

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3. Removable galvanized cage having integral baffles and replaceable brass screens.

4. Removable gasketed cover.

5. Minimum overall dimensions: 350 x 350 x 400 mm high (14 x 14 x 16 inches) with 175 mm (7 inch) water seal.

6. Non-siphoning and easily accessible for cleaning.

D. Air Gap Fittings: ASME A112.1.2.

E. Methyl Methacrylic Polymer Sink Traps:

1. Cast or wrought brass with flat grid strainer, off-set tail piece, adjustable 38 x 32 mm (1-1/2 x 1 1/4-inch) P trap.

2. Chromium plated finish.

2.4 WATER FAUCETS

A. ASME A112.18.1.

1. Cast or forged brass, compression type with replaceable seat and stem assembly or replaceable cartridge.

2. Indexed lever handles either with or without head.

3. Gooseneck minimum clearance above countertop of 190 mm (7-1/2 inches), bent 180 degrees for vertical discharge.

4. Swing spouts elevated to clear handles.

5. Exposed brass surfaces chromium plated.

6. Cast combination hot and cold fixture with one piece body for multiple outlets.

7. Adapter type connection which will permit field conversion of swing spouts to fixed or gooseneck grouts or vice versa.

B. Laminar flow control device on spouts.

C. Automatic Controlled Faucets.

1. Infra-red photocell sensor and a solenoid valve to control water flow automatically.

2. Breaking light beam activates water flow.

3. Water stops when user moves away from light beam.

2.5 FIXTURE IDENTIFICATION

A. Code fixtures with full view plastic index buttons.

B. Use following colors and codes:

SERVICE COLOR CODE COLOR OF LETTERS

Cold Water Dark Green CW White

Hot Water Red HW White

Deionized Water White DI Black

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SERVICE COLOR CODE COLOR OF LETTERS

Oxygen Light Green OXY White

Hydrogen Pink H Black

Nitrogen Gray N Black

All Other Gases Light Blue CHEM.SYM. Black

2.6 COUNTERTOPS

A. Fabricate in largest sections practicable.

B. Fabricate with joints flush on top surface.

C. Fabricate countertops to overhang front of cabinets and end of assemblies 25 mm (one inch) except where against walls or cabinets.

D. Provide 1 mm (0.039 inch) thick metal plate connectors or fastening devices (except epoxy resin tops).

E. Join edges in a chemical resistant waterproof cement or epoxy cement, except weld metal tops.

F. Fabricate with end splashes where against walls or cabinets.

G. Splash Backs and End Splashes:

1. Not less than 19 mm (3/4 inch) thick.

2. Height 100 mm (4 inches) unless noted otherwise.

3. Laboratories and pharmacy heights or where fixtures or outlets occur: Not less than 150 mm (6 inches) unless noted otherwise.

4. Fabricate epoxy splash back in maximum lengths practical of the same material.

H. Drill or cutout for sinks, and penetrations.

1. Accurately cut for size of penetration.

2. Cutout for VL 81 photographic enlarger cabinet.

a. Finish cutout to fit flush with vertical side of cabinet, allowing adjustable shelf to fit into cutout space of cabinet at counter top level. Finish cutout surface as an exposed edge.

b. Provide braces under enlarger space to support not less than 45 kg (100 pounds) centered on opening side along backsplash.

I. Plastic Laminate Countertops:

1. Fabricate plastic laminate on five-ply plywood or particleboard core

19 mm (3/4 inch) thick with plastic laminate backing sheet.

2. Front edge over cabinets not less than 38 mm (1-1/2 inches) thick except where plastic "T" insert is used, not less than 19 mm (3/4 inch) thick.

3. Exposed Surface and edges of decorative laminated plastic or laboratory chemical resistant surface.

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a. Use chemical resistant surface on tops 6A, 6B, and 6C.

b. Use decorative surface tops when noted plastic laminate, for tops

10A, 10B and 10C.

J. Solid Surface Countertop for exams, treatment procedure, as well as modular casework

1. Color / Pattern: Refer to 09 06 00 SCHEDULE OF FINISHES

K. Solid Surface Countertop on Reception Area

1. Color / Pattern: Refer to 09 06 00 SCHEDULE OF FINISHES

2. Thickness: 1/2 inch (12 mm)

3. Installation: According with manufacture specifications.

PART 3 - EXECUTION

3.1 INSTALLATION

A. Before installing countertops verify that wall surfaces have been finished as specified and that mechanical and electrical service locations are as required.

B. Installation have to be according with the manufacture specifications.

C. Secure countertops to supporting rails of cabinets with metal fastening devices, or screws through pierced slots in rails.

1. Where type, size or spacing of fastenings is not shown or specified, submit shop drawings showing proposed fastenings and method of installation.

2. Use round head bolts or screws.

3. Use epoxy or silicone to fasten the epoxy resin countertops to the cabinets.

4. Use wood or sheet metal screws for wood or plastic laminate tops;

minimum penetration into top 16 mm (5/8 inch), screw size No 8, or

10.

D. Rubber Moldings:

1. Where shown install molding with butt joints in horizontal runs and mitered joints at corners where ceramic tile occurs omit molding.

2. Fasten molding to wall and to splashbacks and splashends with adhesive.

E. Sinks

1. Install stainless steel sink in plastic laminate tops with epoxy compound to form watertight seal under shelf rim.

a. In laboratory and pharmacy fit stainless steel sink with overflow standpipe.

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b. Install faucets and fittings on sink ledges with watertight seals where shown.

F. Faucets, Fixtures, and Outlets:

1. Seal opening between fixture and top.

2. Secure to top with manufacturers standard fittings.

G. Range Tops, Electrical Outlets, Film Viewer:

1. Set in cutouts with manufacturers gasket sealing joint with top to prevent water leakage.

2. Install control unit and electric outlets where shown. Seal escutcheon plate at lap if on counter or top to prevent water leakage.

3.2 PROTECTION AND CLEANING

A. Tightly cover and protect against dirt, water, and chemical or mechanical injury.

B. Clean at completion of work.

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