Drawings and Design Data
The building covered by these specifications shall be of self-framing design utilizing the roof and wall covering panels as the primary structural supporting members.
Each building shall be supplied complete with all necessary component parts required to form a complete building system and all parts shall be new and free from all defects or imperfections.
The building width and length shall be measured from the outside of the building wall panels and the height of the building shall be the distance measured from the bottom surface of the base channel to the exterior juncture of the roof and side wall panels.
The building supplier shall supply a complete set of building erection drawings and a step-by-step "Erection Procedure" manual illustrating the construction sequence of the erection of the building.
The contractor shall submit a set of design calculations from the building supplier within two weeks after the bid opening. No building will be considered which, in the option of the project administrator, does not conform to the basic design in transportability, color, line, mass proportions, and interior space created, and specifications. Buildings not conforming to these specifications shall obtain prior written acceptance at least two weeks before the bid due date.
Design Criteria
All buildings shall be designed in accordance with the applicable sections of the latest edition of the AISA "Specifications for the Design, Fabrication, and Erection of Structural Steel for Buildings" and the AISI "Specifications for the Design of Light Gauge Cold Formed Steel Structural Members".
Each building shall be designed for the following loads, in addition to the stationary weight of the building.
The vertical Live Load of the building shall not be less than _____ pounds per square foot applied on the horizontal projection of the roof.
The horizontal Wind Load of the building shall not be less than _____ pounds per square foot and shall be distributed and applied in accordance with the applicable edition of the Metal Building Manufacturers Association (MBMA) publication titled "Recommended Design Practice Manual" and the U.S. Navy Facilities Engineering Command publication titled "NAVFAC DM-2". All combination and distribution of auxiliary equipment loads imposed of the building system shall be done in accordance with the applicable section of the MBMA publication titled "Recommended Design Practices Manual". The building designer is responsible for advising the building supplier of any auxiliary loads intended to be imposed on any building covered by these specifications.
Scope of Work
Design, furnish and install self-framing type steel buildings as manufactured by Parkline, Inc. or approved equal.
General Description
Size shall be a nomial _____ x _____ with a minimum inside ceiling clearance of 7’11" above finish floor.
Roof Panels
Roof panels shall be supplied in a single continuous length from eave line to ridge line and shall be designed to tightly interlock so that no fasteners are required at intermediate points along the panel side laps.
Roof panels shall be 16" wide with a smooth surface between the interlocking side ribs. The interlocking ribs shall be a minimum 3" high, and shall be turned upward. All roof panels shall be factory punched for connection at the eave line of the building.
Option 1 - Roof panels shall be nominal 24 gauge galvanized steel conforming to ASTM A525 specifications with the galvanized coating conforming to G90 ( 1-1/4 oz.) standards. Minimum yield strength of panel material shall be 40,000 PSI. Roof panels shall be factory painted "White" as specified in the section of these specifications titled "Color Coatings"
Option 2 - Roof panels shall be nominal 24 gauge steel coated on both sides with a coating of corrosion resistant aluminum-zinc alloy applied by a continuous hot dipping process. Coating weight shall be a minimum of 0.32 oz. of aluminum-zinc alloy per square foot of coated sheet (both sides) equivalent to about 0.75 mil thickness on each side. Minimum yield strength of panel material shall be 50,000 PSI.
Wall Panel Design
Exterior wall panels of the building shall be a single continuous length from the base channel to the roof line of the building at the sidewalls and endwalls of the building except where interrupted by wall openings.
Wall panels shall be 16" wide with a 3" deep inward turned interlocking side rib. Wall panels shall contain two (2) 11/16" deep by 3-1’8" wide fluted recesses, each starting 2-7/16" from the panel edge.
Wall panels shall be fastened internally to the base channel and eave cap of the building with 3/8" diameter electro galvanized machine bolts placed within the panel interlock. The fastening system shall be designed so that no wall fasteners are exposed on the exterior surfaces of the walls. Through the wall, exposed, fasteners are not acceptable.
Wall panels shall be nominal 24 gauge galvanized steel conforming to ASTM A-525 specifications with the galvanized coating conforming to G90 (1 1/4 oz.) standards. Minimum yield strength of panel material shall be 36,000 PSI. Panel materials shall be embossed with a random pattern pebble embossure of approximately .007 - .008 depth. Wall panels shall be factory painted as specified in the section of these specifications titled "Color Coatings".
Color Coatings
All exterior surfaces of the galvanized steel roof covering (if applicable), wall covering and exterior trim shall receive two factory, roller applied, paint coats having a combined thickness of .8 to 1.2 mils of dry film thickness. The finish coat for roof panels (if applicable) shall be a white polyester formulation and the finish coat for wall panels shall be a siliconized polyester formulation of one of the following Parkline colors: Twilight Blue, Desert Tan, Laurel Green, Arctic White or Harvest Gold.
Roof Design
Each building shall have an interlocking panel roof system with the roof slope being 2" in 12". Roof panels shall be attached to the building eave cap with 1/4" diameter stainless steel bolts through factory punched holes.
The ridge of the roof shall consist of a welded double channel assembly secure to the roof panels with #12 fasteners and sealed with a nominal 20 gauge galvanized steel ridge cover.
The interlocking panel roof system shall extend a minimum of 8" over the endwall panels and a minimum of 6" over the sidewall panels of the building.
Structural Framing
Angle or channel bracing components shall be placed across the building width to allow transmission of horizontal wind loads. All wind bracing components shall be of nominal 14 gauge steel with minimum Grade G60 galvanized coating.
Eave Gutters and Downspouts
The eavelines of the building shall be provided with a gutter and downspout system consisting of nominal 26 gauge galvanized steel gutters of the same configuration as the building rake trim and 2" x 3" box type downspouts. Gutter and downspouts shall be pre-painted Arctic White or Roman Bronze on all exterior surfaces. The gutter and downspout system shall be provided complete with all necessary outlet drops, elbows, and connecting hardware.
Roof Insulation
Roof insulation shall consist of 48" wide, 3" thick. .6# density fiberglass with a .004 white vinyl facing on its exposed side. Insulation shall have a 2" wide tab along each side for attachment to adjacent insulation sections.
Insulation shall be attached to interior of roof panels by means of mechanical clip fasteners spaced on approximately 2’ centers. Clips shall be fastened with quick set adhesive.
The "U" value through the roof shall be approximately 0.10 BTU’s at 75 degrees F.
Wall Insulation
All walls shall be insulated with 3" thick R-11 unfaced fiberglass insulation. The "U" value through the center of the finished wall shall be a maximum of 0.16 BTU’s at 75 degrees F. All "U" values must be measured in accordance with the "Zone Method" contained in ASHRAE "Handbook of Fundamentals".
Exterior Doors
All doors shall be 1-3/4" thick, flush type, with interlocking seams on hinge and back edges. Door panels shall be nominal 20 gauge galvanized steel. The door core shall consist of impregnated kraft honeycomb laminated to the inside face of the door panels. Doors shall be bonderized and receive one coat of baked on prime paint.
Door frame shall be 4-3/4" deep double rabbeted type and shall be of nominal 16 gauge galvanized steel.
Each exterior door shall have one factory assembled 1/4" wire glass lite, nominally 8-11/16" wide x 37-1/4" long.
Exterior door hardware shall include: a. 3 - 4-1/2" x 4-1/2" steel hinges per Govt. Spec. FFH-116C, Type T2127, US260 Satin Chrome finish b. 3/16" x 3/8" polyurethane weatherstripping c. Parallel arm door closer per Govt. Spec. 3009-IV, regular arm, Aluminum Finish d. Rim type crossbar panic device per Govt. Spec. 810H with US28 Aluminum Lacquer Finish
All doors shall be pre-assembled in their frame with hardware installed and tested prior to shipment. Field installation of the door unit shall not require any frame assembly, door hanging or hardware installation.
Windows
Horizontal Slide Windows of the sizes indicated on the drawings shall be furnished factory glazed with clear glass; framed fiberglass screen, integral head, sill and jambs. The window unit will be a one piece installation and require no field glazing or painting. Glazing sp lines shall be vinyl plastic and the sash weatherstripping shall be first grade resilient wool felt and wool pile.
Gable Louvers
Gable Louvers shall be fixed blade type with blades set on a 45 degree slope. Blades and framed shall be nominal 14 gauge extruded aluminum with natural mill finish and .004" anodic coating.
Louver shall include #18 - 14 aluminum mesh insect screens.
Acoustical Ceilings
Ceilings for the classroom buildings shall be level suspended, painted steel grid system, two by four block design fissured pattern with trim ceiling mold. Tile shall be 2’ x 4’ x 5/8" white mineral board, Class "A". Note that the grid system must be installed before the cross wall is erected. Grid system to run the length of building.
Ceiling shall be insulated with 6" thick roll type fiberglass batts with vapor barrier. "R" value of ceiling system to be 0.19.
Interior Partition Framing
All interior partition framing shall be precut 2" x 4" studs, on 16" centers, secured to the building structural framing with self-drilling fasteners. Toilet partitions shall be insulated with 3" thick fiberglass batt insulation.
Interior Wall Finish
All interior walls shall be paneled with 5/8" thick vinyl coated gypsum board (1 hour rated) fastened to 1" furring strips on 2’8" centers. Furring strips to be field attached to exterior panel ribs with bugle head self tapping screws. A complete system is to be provided with top and bottom molding and batten strips.
Interior Doors
Interior doors shall be 1-3/4" thick, as shown on the drawings, with the following hardware options.
Interior door hardware shall be US260 finish and include: a. 1-1/2 pair butt hinges b. (Toilets only) Privacy lockset with non-lockout c. (Storage and Passages) Latch set only
Perimeter Beam System (Steel Floor System)
Complete perimeter beam systems as shown on the drawing, including all necessary channel braces, diagonal bracing and anchor bolts, shall be provided.
All structural steel shall conform to ASTM A-7 Specification and shall be new and free from defects. All welding shall be in full accordance with the applicable standards of the American Welding Society.
The perimeter beam system shall receive one coat of red oxide primer and shall be finish painted with two coats of all-purpose steel enamel.
Floor Joists (Steel Floor System)
Floor joists shall be in full accordance with "Standard Specifications for Open Web Steel Joists, J- and H- Series", March 1, 1965, as adopted by the Steel Joist Institute and the American Institute of Steel Construction.
Three rows of 3/4" diameter bridging shall be welded at top and bottom of joist system.
Bottom chord of joists shall be extended to allow welding of bottom chord to bottom flange of the perimeter beam.
Floor Insulation (Steel Floor System)
Prior to installation of flooring as specified in next section, 2" diamond pattern galvanized mesh shall be installed between floor joists and 3" thick (R-11), .6# density foiled faced fiberglass batt insulation shall be installed between mesh and sub floor elevation.
Floor (Steel Floor System)
Shall be 2-4-1, tongue and groove, 1-1/8" thick plywood decking with exterior glue.
Finished Floor (Steel Floor System)
Shall be as specified by the owner or their architect.
Perimeter Beam (Wood Floor System)
The building will be supported by 4 beams. Beams should be constructed of three (3) 2" x 8" laminated #2 Southern Yellow Pine, Wolmanized or equal.
Floor Joist (Wood Floor System)
Floor joists shall be 2" x 6" Southern Yellow Pine or Fir, #2.
Floor Insulation (Wood Floor System)
As shown on drawing.
Flooring (Wood Floor System)
Sub-floor (bottom-layer) shall be 3/4" CO exterior grade plywood, installed with staggered joints. Second sub-floor layer shall be staggered, joint lapped 1/2" exterior grade particle board glued and nailed with 4 penny, coated nails to the bottom plywood layer. Sub floor must be started from the door side of the building with a square edge. Note that the plywood sub-floor joints must be supported by 2" x 4" blocking when joints do not fall on floor joists. The glue is to be a 1/4" bead of "Liquid Nails" applied every 12", each way on the sub-floor.
Finished Floor (Wood Floor System)
Shall be as specified by the owner or their architect.
