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Specifications for Plywood Core Casework

(Plywood Substrate for plastic laminate casework)

as manufactured by

Mastercraft Woodworking Co., Inc.

 

These specifications contain certain optional selections which must be made by the specification developer. These selections are identified with an asterisk [*].

1.00 General

 

1.01 Scope of Work

A.  Provide all plastic laminate casework and accessory items as specified herein. Refer to the project plans for specific details and requirements.

B.  General Conditions:  The General Conditions, Supplementary General Conditions, Special Conditions and General Requirements apply to all work in this Division. Refer to other Sections, Divisions, and Schedules for work connected to this Section.

1.02  Related Work Specified Elsewhere

A.  General millwork and custom cabinetry unless specified herein or so noted on the project plan

B.  Rubber, vinyl or other material for finishing cabinet toekicks.

C.  Locks masterkeyed to room doors and other special locks.

D.  Blocking within walls.

E.  Sinks, plumbing fixtures, electrical and mechanical equipment of all types, and the related installation and service connections thereof.

1.03  Submittals

A.  Submit in accordance with the General, Supplementary, and Special Conditions of the Specifications.

B.  Submit Shop Drawings for approval showing materials, dimensions, details, and sink locations.

C.  Submit samples of colors and hardware cuts as requested by the architect/owner.

 

1.04 Qualifications

A.  Drawings and specifications are based upon casework as manufactured by Mastercraft Woodworking Co., Inc., 681 Mohrsville Road, Shoemakersville, PA.  19555.

B.  Casework of other recognized institutional casework manufacturers may be considered for approval provided a written request is received within ten (10) days prior to the opening of bids. Casework must conform to design, quality of materials, design intent, workmanship, and exact performance function of casework components and details specified and implied by manufacturer's reference, and as shown on plans.

C.  Manufacturers requesting approval shall submit evidence of at least 5 years experience in the manufacturing of institutional casework for similar projects. Manufacturers shall also show evidence of financial stability, adequate plant capacity to meet schedules, and complete design capability in the form of a comprehensive product catalog and specifications.  Sample cabinets, catalogs, and specifications shall be submitted with the written request as well as a list detailing those areas in which their product deviates from this specification. Samples may be retained by the architect until completion of  the project for verification of compliance with these specifications.

D.  The opinion and decision of the architect/owner shall be final in the evaluation of the manufacturer's request for permission to bid the project.

      2.00  Products

 

2.01  Materials

    A.  Laminated Plastics/Finishes:

1.  High pressure decorative plastic laminate (HPL); vertical grade (.032) for exterior cabinet surfaces shall meet NEMA standards for vertical grade. HPL for countertops shall be general purpose grade (.050).

              2.  Color Selections Available:

                             a.  Full range of solid colors, patterns, and woodgrains from Formica, WilsonArt, 

                                 and Nevamar.

                       b.  Allow for up to ten (10) different colors per project.

                             c.  Woodgrain selections will run grain vertically on cabinet doors, sides, and

                                  finished backs and horizontally on drawer fronts, aprons, and top rails.

                             d. Select only one (1) color per cabinet.

                    3.  Plastic laminate balancing sheet for countertops and concealed surfaces shall

                         be heavy gauge phenolic paper type, brown in color.

         B.  Particleboard Substrate: shall be of 47 lb. density and balanced construction with    

              moisture content not to exceed 8%. Three-ply construction shall exceed the requirements  

              for its type and classification under Commercial Standard CS-236-66, Federal

              Specifications LLL-B-800A, and ASTM D 1037-78.

         C.  Hardboard: shall meet or exceed Commercial Standard CS-251 and Federal Specification  

              LLL-B-00810; board shall be 1/4" thick, tempered, and smooth both faces.

   D.  Plywood Substrate: shall be natural birch veneer core plywood.

   E.  Edging:

                    1.  Solid, high impact, homogeneous color polyvinyl chloride (PVC), applied by

                         high speed edgebander with hot melt adhesive and automatically trimmed on

                         all edges for consistent, uniform appearance.

              *SELECT ONE

              2.  Shadow design for cabinet body edges in almond, black, or gray PVC.

                    2.  SelfEdge design for cabinet body edges in HPL or PVC, color to match HPL of    

                         exposed cabinet surfaces.

              *SELECT ONE

              3.  Shadow design for cabinet doors/drawer fronts in almond, black, or gray PVC.

                    3.  SelfEdge design for cabinet doors/drawer fronts in HPL or PVC, color to match HPL

                         of cabinet doors/drawer fronts.

                    3.  Accent design in 3-mm thick PVC; solid, high impact, homogeneous color; applied

                         by high speed edgebander with hot melt adhesive and automatically trimmed all

                         edges. Additionally, all edges, including vertical corner edge, receive uniform radius

                         equal to thickness of the edging. Color as selected from manufacturer's

                         standard choices.

                    3.  Continuous, extruded, homogeneous color polyethylene T-edging with barbed leg

                         pneumatically driven into machined groove on door and drawer front edges; door and

                         drawer front corners receive radii to allow tight wrapping of edging with single piece

                          of T-edging. Color of edging is almond, black, or gray.

   F.  Hardware:

              1.  Hinges:

              *SELECT ONE

                             a.  Heavy duty, 5-knuckle institutional hinge; mill ground, hospital tip; fixed

                                  pin with all edges eased. Steel is .095" thick; full wrap around design with

                                  minimum of nine screw attachment holes. One pair per door to 48" height,

                                  one and one half pairs over 48" height. Hinge to accommodate 3/4" thick

                                  door and allow 270 degree swing opening. Finish to be gray or black epoxy

                                  powder coat finish or brushed chrome-plated finish.

                             a.  Fully concealed, heavy gauge metal hinge featuring 170 degree swing

                                  opening, full 6-way adjustment, demountable for ease of door removal from

                                  separate base plates. Hinge to be self-latching to eliminate need for

                                  separate catch.

             2.  Pulls:

             *SELECT ONE

                             a.  Wire type on 4" centers in black or gray epoxy powder coat finish or

                                  brushed chrome-plated finish.

                             a. Semi-recessed ABS plastic in almond, black, or gray finish.

             3.  Drawer Slides:

                             a.  Standard Drawers: almond color, epoxy coated, wrap around type with

                                  positive in-stop, out-stop, and stay-open features. Minimum 100 lb.

                                  dynamic load rating.

                             b.  File Drawers: almond color, epoxy coated, wrap around full extension type

                                  with three member design. Minimum 100 lb. dynamic load rating.

                             c.  Heavy Duty Drawers: three member, progressive opening side-mount

                                  slide; minimum 100 lb. dynamic load rating with zinc plated finish.

                   4.  Catches: magnetic type with dual dowel attachment and adjustable in-out magnet.   

                        Provide catch at both top and bottom of each tall cabinet door. Catch not required

                        with concealed hinges.

                   5.  Adjustable Shelf Rest: clear plastic rest with anti-tip tab and projecting dowel

                        for insertion into drilled holes on cabinet sides.

                   6.  Wardrobe Rod: chrome plated 1" diameter steel tube with 1/8" wall thickness;    

                        supported with chrome plated steel flanges, fully-captured type.

                   7.  Coat Hooks: aluminum wall or undershelf types, in single or double hook styles as 

                        required by cabinet design.

                   8.  Molded Tote Trays: high impact polyethylene with card holders, color tan; supported

                        by ribbed polyethylene side rails on 1" centers, color tan.

                   9.  Locks: disc tumbler available keyed alike and masterkeyed; chrome finish; from

                        National Lock.

                   10. Wheel Casters: swivel casters for mobile cabinets are plate type with ball bearing     

                         swivel plate; 5" wheel diameter; minimum 135 lb. load rating per caster.

   G.  Detailed Construction Requirements

                   1.  Toekick: base and tall cabinet sides shall extend to floor and be notched to form an

                        integral toekick space.

                   2.  Cabinet Tops and Bottoms:

                            a.  Tall and base cabinet tops and bottoms shall be 3/4" plywood with almond

                                 vertical grade HPL on the cabinet interior face and heavy gauge phenolic

                                 backer on the concealed face.

                            b.  Wall cabinet tops and library stack bottoms shall be 1" plywood with almond

                                 vertical grade HPL on the cabinet interior face and heavy gauge phenolic

                                  backer on the concealed face.                  

                            c.  Library stack tops shall be 1" plywood with almond vertical grade HPL on

                                 both faces.                  

                            d.  Wall cabinet bottoms shall be 1" plywood with almond vertical grade HPL

                                 on the cabinet interior face.

                      *SELECT ONE

                            e.  Exterior exposed wall cabinet bottoms shall be almond vertical grade HPL.

                            e.  Exterior exposed wall cabinet bottoms shall be laminated with HPL, color to

                                match HPL of exposed vertical cabinet surfaces.

                            f.  Solid subtops shall be furnished on all base cabinets except sink base      

                                units.

                   3.  Cabinet Sides:

                            a.  Wall, tall, and base cabinet sides shall be 3/4" plywood with almond vertical

                                 grade HPL on the cabinet interior face and heavy gauge phenolic backer on the

                                 concealed face.                  

                            b.  Library stack sides shall be 1" plywood with almond vertical grade HPL on

                                 the cabinet interior face and heavy gauge phenolic backer on the concealed 

                                 face.

                            c.  Exposed faces of cabinet sides shall be laminated with vertical grade HPL.

                      *SELECT ONE

                            d.  Exposed cabinet body edges receive Shadow design in almond, black, or gray

                                 PVC.

                            d.  Exposed cabinet body edges receive SelfEdge design in HPL or PVC, color

                                 to match HPL of exposed cabinet surface.

             4.  Fixed and Adjustable Shelves

                             a.  Cabinet shelves shall be plywood faced both sides with almond vertical grade

                                  HPL; plywood thickness shall be 3/4" for shelves up to 36" in width and 1" for 

                                  widths greater than 36".

                             b.  Library stack shelves shall be 1" plywood faced both sides with almond

                                  vertical grade HPL.                  

                             c.  Front leading edge shall be edged with PVC, almond in color.

                             d.  Instrument storage shelves shall be 7/8" thick, consisting of 1/8" thick      

                                  hardboard applied to the upper surface of 3/4" thick plywood. Bottom surface

                                  of shelf shall be faced with almond vertical grade HPL. Front leading edge

                                  shall receive a metal protective edge.

              5.  Cabinet Backs:

                             a.  Standard cabinet backs shall be 1/4" thick plywood faced with almond vertical

                                  grade HPL on the cabinet interior face and shall be left raw on the concealed

                                  face. The concealed face shall receive a continuous bead of hot melt adhesive

                                  at intersection of back with sides and hang rails.

                             b.  Hang rails shall be 3/4" plywood and shall be dowelled into cabinet sides.

                             c.  Exposed exterior backs shall be 3/4" plywood faced with almond vertical

                                  grade HPL on the cabinet interior face and selected color vertical grade

                                  HPL on the exposed face.

             6.  Door and Drawer Fronts:

                             a.  Door and drawer fronts shall be fabricated from an 11/16" particleboard core

                                  laminated on both faces with high pressure laminate. Exposed face color as

                                  selected and semi-exposed face almond in color. Doors and drawer fronts

                                  shall overlay the cabinet body and establish a 1/8" reveal between pairs of

                                  doors, doors and drawer fronts, and multiple drawer fronts on the same

                                  cabinet.

                       *SELECT ONE

                             b.  Shadow design for cabinet doors/drawer fronts in almond, black or gray PVC.

                             b.  SelfEdge design for cabinet doors/drawer fronts in HPL or PVC, color to

                                  match HPL of exposed cabinet surfaces.

                             b.  Accent design in 3 mm thick PVC; solid, high impact, homogeneous color;   

                                  applied by high speed edgebander with hot melt adhesive and

                                  automatically trimmed all edges. Additionally, all edges, including vertical

                                  corner edge, receive uniform radius equal to thickness of the edging. Color as 

                                  selected from manufacturer's standard choices.

                              b.  Continuous, extruded, homogeneous color polyethylene T-edging with barbed

                                   leg pneumatically driven into machined groove on door and drawer front

                                   edges; door and drawer front corners receive radii to allow tight wrapping of

                                   edging

                                   with single piece of T-edging. Color of edging is almond, black, or gray.

                              c.  Framed glass doors shall be 3/4 " thick, laminated both sides with high

                                   pressure laminate. Glass shall be double strength float and shall be retained

                                   in lights with removable glazing. Doors shall be available for both sliding and 

                                   hinged designs.

                              d.  Frameless glass doors for sliding designs shall be 1/4" thick float glass with

                                   seamed edges and machined finger pulls.

              7.  Drawers:

                              a.  Drawer fronts shall be applied to the front component of a separate drawer

                                   box.

                              b.  Sides, front, and back of drawer box shall be 3/4" thick solid poplar, joined

                                   at the four corners using multiple dovetail joints. Upper drawer side edges

                                   shall be bullnosed with the bullnosing stopping approximately 1 1/2" from the

                                   joints front and rear.

                              c.  Drawer bottom shall be 1/4" plywood and shall be fully captured in the drawer

                                   box sides, front, and back in a full dado.

                              d.  All drawer box joints shall be glued; a continuous glue bead shall be applied

                                   in the bottom dado; a minimum of four glue blocks shall be applied to secure

                                   the bottom.

                              e.  Drawer boxes shall receive a clear protective catalyzed finish.

                              f.   Heavy-duty drawer boxes for paper storage or as specified shall receive a 1/2"

                                   thick plywood bottom instead of the standard 1/4" thick bottom. All paper

                                   drawers shall be fitted with a hood at the rear.

                              g.  Drawers shall be fitted with slides as per Section 2.01.F.3.

             8.  Vertical and Horizontal Dividers:

                              a.  As dictated by design, 1/4" dividers shall be tempered hardboard,

                                   smooth both faces, eased on leading edge, and shall be secured in

                                   cabinet with clear molded plastic clips.

                              b.  As dictated by design, 3/4" dividers shall be 3/4" plywood faced both sides

                                   with almond vertical grade HPL, and shall be secured in cabinet with either

                                   clear plastic clips or wood dowels. Leading edge shall be edged with

                                   almond  PVC.

             9.  Cabinet Body Rails:

                              a.  Rails shall be 3/4" x 6" full width plywood members faced both sides with

                                   heavy gauge phenolic backer. These shall be located behind all door/drawer

                                   and multi-drawer reveals so as to close off all reveals. Color of leading edge 

                                   shall match color of cabinet body edge

          H.  Countertops:

                   1.  Countertops shall be 1 1/4" thick solid particleboard core with general purpose HPL

                        (.050) bonded to top surface and heavy gauge phenolic balancing sheet bonded to

                        underside. Exposed edges shall be HPL to match top surface HPL and shall be

                        edged prior to laminating the deck laminate to the core. Splashes shall be butted

                        against edge of countertop, sealed with continuous bead of caulking applied to

                        countertop edge so as to produce a squeeze-out of caulking, and then screwed from

                        concealed side into countertop deck edge. Splashes shall have heavy gauge

                        phenolic balancing sheet on concealed side.

                   2.  Factory applied tops on mobile cabinets and other specialty cabinets shall be 3/4"

                        particleboard with general purpose HPL (.050) bonded to top surface and heavy

                        gauge phenolic balancing sheet bonded to underside. Exposed edges shall be

                        edged to match top surface HPL.

    I.  General Construction:

                   1.  All cabinet doors, drawer fronts, and exposed sides shall be laminated with vertical

                        grade HPL.  

                   2.  Wall cabinet bottoms shall be finished per Section 2.01.G.2.d.                 

                   3.  Interior surfaces of open cabinets (no doors) such as shelving units, lockers, vertical

                        divider units, and library stacks shall be:

                        *SELECT ONE

                              a.  almond vertical grade HPL. Interior surfaces shall include those on tops,

                                   bottoms, sides, fixed partitions, shelves and backs.

                              a.  vertical grade HPL to match exposed surfaces. Interior surfaces shall include

                                   those on tops, bottoms, sides, fixed partitions, shelves and backs.

             4.  Interior surfaces of cabinets with solid or framed glass doors shall be:

                        *SELECT ONE

                              a. almond vertical grade HPL.  Interior surfaces shall include those on tops,

                                  bottoms, sides, fixed partitions, shelves and backs.                 

                              a.  vertical grade HPL to match exposed surfaces. Interior surfaces shall include

                                  those on tops, bottoms, sides, fixed partitions, shelves and backs.

                   5.  Concealed cabinet sides shall be faced with heavy gauge phenolic backer. No raw

                        plywood shall be permitted on cabinet side faces.

                   6.  All cabinet parts shall be accurately machined for quality joints utilizing automatic

                        machinery.

                   7.  Cabinet sides shall be bored to receive dowels for mating with cabinet tops and

                        bottoms. 1/4" back panel shall be housed into cabinet sides, top, and bottom.

                   8.  3/4" plywood hang rails shall be glued to rear of back and dowelled into cabinet

                        sides.

                   9.  Rear of cabinet back shall receive a continuous bead of hotmelt adhesive to increase

                        overall cabinet integrity and form a moisture and vermin seal.

                   10. Sink cabinets shall have removable backs to facilitate installation around plumbing

                        rough-ins.

          J.  Mobile Cabinets:

                   1.   All mobile cabinets shall be designed with a separate angular steel frame base with

                        casters welded at the four corners. The cabinet shall sit upon and be attached to this

                        base so that the base acts as a dolly for moving the cabinet.

                   2.  Tall mobile cabinets (66" high) shall have a steel framing system attached to the

                        steel base so as to prevent racking of the cabinet and provide stability when fully 

                        loaded.

                   3.  Tall mobile cabinets (66" high) shall have top surface laminated with vertical grade

                        HPL (.032). All other mobile cabinets shall receive a factory applied top as per

                        Section G.2.

                   4.  All mobile cabinets shall be laminated with HPL on all faces including front, sides,

                        and back.

 

 2.02  Casework Sizing

           A.  General-use wall, base, and tall cabinets shall be available in width, height, and depth

                 increments of 1/16" so as to maximize the utilization of available space and accommodate

                 special equipment requirements.

           B.  Fillers and scribes at wall terminations shall be no greater in width than 1" unless field

                 conditions necessitate the use of larger sizes.

 

 3.00 Execution

 

 3.01 Coordination

           A.  Coordinate work of this section with related work of other sections as necessary to obtain

                 proper installation of all items.

           B.  Verify site dimensions of cabinet locations at jobsite prior to fabrication.

 

 3.02  Installation

           A.  Storage and Protection: protect casework in transit. Store at jobsite in ventilated area not

                exposed to extreme temperature and humidity changes. Do not store or install casework

                in building until all wet work is complete.

           B.  Installers: install all casework using experienced installers as authorized by the

                manufacturer.

           C.  Installation Workmanship:

                  1.  Erect casework straight, level, and plumb. Scribe and closely fit to adjacent work,

                       cutting and fitting around all obstructions.

                  2.  Install all items complete and adjust all moving parts to operate freely.

                  3.  Leave all exposed surfaces clean and free of defects at time of final acceptance.

           D.  Guarantee: all materials shall be guaranteed for a period of 2 years from defects in

                 material and manufacturing workmanship.

           E.  Site Cleanup: remove all debris associated with casework installation including cartons,    

                 packing, scraps, sawdust, and packaging materials.

 

                                                           

 

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