1、01-03M 13121-1 SECTION 13121 PRE-ENGINEERED METAL BUILDINGS SPEC WRITER NOTE: Delete between /-/ if not applicable to project. Also delete any other item or paragraph not applicable in the section and renumber the paragraphs. PART 1 - GENERAL 1.1 DESCRIPTION This section covers materials, labor and
2、equipment required to complete the pre-engineered metal building shown and specified. 1.2 RELATED WORK A. Steel Windows: Section 08510, STEEL WINDOWS. B. Concrete curbs and foundations: Section 03300, CAST-IN-PLACE CONCRETE. C. Structural Steel, Section 05120, STRUCTURAL STEEL. D. Builders Hardware:
3、 Section 08710, BUILDERS HARDWARE. E. Color of panels, and other components: Section 09050, INTERIOR/EXTERIOR FINISHES, MATERIALS, AND FINISH SCHEDULE. 1.3 MANUFACTURERS QUALIFICATIONS A. Approval by Contracting Officer is required of products or service of proposed manufacturer, suppliers and insta
4、llers, and will be based upon submission by Contractor of certification that: B. Manufacturer regularly and presently manufactures pre-engineered metal buildings as specified as one of its principal products. C. Installer has technical qualifications, experience, trained personnel and facilities to
5、install specified items. Approval will not be given, however, where experience record is one of unsatisfactory performance. D. Manufacturers product submitted has been in satisfactory and efficient operation on three installations similar and equivalent to this project for three years. Submit list o
6、f installations. 1.4 DESIGN CRITERIA A. Design metal buildings to resist the dead load, the live load, and the combination of these loads as set forth in Metal Building Manufacturers Association (MBMA) “Recommended Design Practices Manual“. SPEC WRITER NOTE: Check roof live load and wind load with s
7、tructural. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-01-03M 13121-2 1. Roof Live Load: / 150 / 200 / Kg/m (/ 30 / 40 / pounds per square foot) applied on horizontal projection of roof structure. 2. Wind Load: / 100 / 150 / Kg/m (/ 20 / 30 / pou
8、nds per square foot) pressure. 3. Seismic loading as required by Uniform Building Code. 4. Auxiliary loads consisting of / crane loads / special equipment / other /. SPEC WRITER NOTE: Check paragraph below with Facility Quality Office, Standard Service. B. Deflection Limits (Live and Wind Loads Only
9、): 1. Roof Framing: L/270. 2. Roof Panels: L/180. 3. Walls Panels: L/180., where L = Span length. C. Metal Building components shall be capable of supporting design loads without permanent deformation, loss of watertightness, or disengagement of any part of installation. D. Maximum “U“ Value: Total
10、“U“ value through wall panel, roof panels, and insulation shall not be greater than / 1W/M K / (/ 0.175 /) and shall take infiltration and stud effect at joints into account. E. Structural steel sections shall be designed in accordance with AISC, “Specification for the Design, Fabrication, and Erect
11、ion of Steel Buildings“. Light gage cold formed structural members shall be designed in accordance with latest edition of AISI, “Specifications for the Design of Light Gage Cold Formed Steel Structural Members“. Welding shall comply with AWS Standard No. D1.1. 1.5 SUBMITTALS A. Submit in accordance
12、with Section 01340, SAMPLES AND SHOP DRAWINGS, furnish the following: B. Samples: Wall and roof panels, 600 mm (24-inch) wide by 300 mm (12 inch) high sections, with factory finish in specified colors. Fasteners for panels C. Certificates: 1. Stating that the zinc coating on steel panels is the spec
13、ified thickness. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-01-03M 13121-3 2. Stating that the thermal values of the roof and wall panels with insulation meet the specified requirements. 3. Indicating manufacturers and installers meet qualificat
14、ions specified. D. Manufacturers Literature and Data: Metal Panels Insulation Sealing materials Steel doors, door frames and hardware interlocking thresholds Windows E. Shop Drawings: Shop drawings, erection drawings and erection manuals showing complete erection layouts, installation instructions,
15、and details of connections. Details and layouts shall show the steel framing location, lengths, and markings of panels and other component parts to correspond with sequence and procedure for erection. Shop drawings shall show connections with adjoining work. SPEC WRITER NOTE: Delete following if not
16、 applicable. F. Structural Design Analysis: 1. Furnish complete structural design analysis for all structural components of the prefabricated metal buildings. 2. Provide manufacturer load tables indicating the selected panel material, configuration and thickness meets the design requirements for the
17、 spans shown. 1.6 STORAGE AND PROTECTION Materials stored on site before erection shall be stacked and covered with suitable weather tight covering. Store metal panels so that any accumulated water will drain off. Panels shall not be stored in contact with materials that cause staining. Materials ha
18、ving defects or damages that effect appearance, serviceability or use will be rejected. 1.7 GUARANTEE Prefabricated metal building shall be guaranteed against defects in materials and workmanship, and that after erection completed work shall be weather tight and shall be subject to the terms of the
19、Guarantee Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-01-03M 13121-4 Article in GENERAL CONDITIONS, except that the guarantee period shall be two years. 1.8 APPLICABLE PUBLICATIONS A. The publications listed below form a part of this specificatio
20、n to the extent referenced. The publications are referenced in the text by the basic designation only. B. American Society for Testing and Materials (ASTM): A36/A36M-01.Carbon Structural Steel. A242/A242M-01.High-Strength Low-Alloy Structural Steel. A307-00.Carbon Steel Bolts unaffected by water; wi
21、th flash-point in excess of 400C (750 degrees F). Sealant shall not migrate oil up to 120 (250 degrees F) nor exude oil under pressure. It shall not skin, sag, nor weep in panel joints under vibration up to temperature of 65C (150 degrees F), nor become brittle at temperature down to -1C (30 degree
22、F). E. Sealing Tape: Manufacturers standard in color to match metal building panels. F. Weatherstrips: Door manufacturers standard approved products; closed cell neoprene or extruded vinyl. G. Thresholds: Aluminum, interlocking type. H. Semirigid Insulation: Mineral fiberboard, ASTM C553, Type 2, fa
23、ced with a vapor barrier having a perm rating of not more than 0.5. 2.2 FABRICATION A. General: Coordinate fabrication and erection of work with related work of other trades. Provide cutouts and supplemental reinforcement as required to accommodate materials and work specified in other sections of t
24、he specifications. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-01-03M 13121-6 B. Protection of Dissimilar Metals: Dissimilar materials which are not compatible with adjoining materials when exposed to moisture shall be separated by means of coati
25、ngs, gaskets, or other effective means. C. Steel Framework Fabrication: 1. Steel framing required for pre-engineered metal building shall be coordinated with structural steel shown on drawings and specified in Section, STRUCTURAL STEEL. Columns and related components shall be shop fabricated complet
26、e, with connection holes for attachment of primary and secondary framing members and bracing. 2. Framing, purlins, girts, struts and miscellaneous steel members required for attachment of pre-engineered metal building panels to building structure shall be roll formed members complying with either AS
27、TM A570 or A611. Design, size, space and install members to meet job and loading conditions. Members shall have factory-punched holes and shall be furnished complete with angle clips and fastenings required for attaching to structure. 3. Bolted connections shall use either ribbed or high-tensile ste
28、el bolts as appropriate for each connection. 4. Welding shall be in accordance with AWS Standard. Operators shall be qualified as prescribed by American Welding Society. Certification shall be furnished upon request of Resident Engineer. SPEC WRITER NOTE: Provide thickness of steel and aluminum shee
29、ts. D. Wall Panels: Wall panels shall consist of an insulating core enclosed between two metal face sheets. Steel face sheets shall be _* mm (inch) thick and aluminum sheets shall be _* mm (inch) thick. Design exterior face sheets of panels with grade of steel or aluminum and configuration of cross
30、section capable of withstanding specified design load conditions without exceeding specified stress and deflection limitations, with same support configuration as that in proposed building. Seal joints between panels with joint sealant as specified. Insulation for panels cores shall be mineral insul
31、ation of a type standard with panel manufacturer and shall be noncombustible as defined by NFPA No. 220. Fasten panels to adjoining panels and to steel framework by method recommended by panel manufacturer and approved before work is started. Provided by IHSNot for ResaleNo reproduction or networkin
32、g permitted without license from IHS-,-,-01-03M 13121-7 SPEC WRITER NOTE: Minimum steel thickness for walls is 0.7 mm (0.0276 inch (24 gage). Minimum steel thickness for roofs is 0.08 mm (0.0336 inch (22 gage). Minimum aluminum thickness is 0.8 mm (0.032 inch). Check design requirements for heavier
33、material. E. Roof Panels: Roofing panels shall be _* mm (inch) thick. Design roof panels with grade of steel or aluminum and configuration of cross section capable of withstanding design load conditions without exceeding specified stress and deflection limitations, with same support configuration as
34、 that in proposed building. Sheets shall be applied with a minimum sidelap of not less than one full configuration. Exposed insulation for installation on inside face of roof panels shall be semirigid insulation. F. Flashing, Trim And Closures: Same material, gage and finish as adjacent wall and roo
35、f panels. Fastenings shall be as specified for wall and roof panels. Form or mold closure strips to match configuration of the roofing or siding. Install closures wherever necessary to insure weather tight construction. G. Louvers: Fabricate wall louvers of same material, gage and finish as face she
36、ets for wall panels. Design louver assembly to prevent infiltration of water into building. Provide insect screens and wire guards on wall louvers except omit insect screens on louvers connected to exhaust ducts. H. Doors And Frames: Doors and frames shall be complete with weatherstrips as specified
37、. Doors, frames and related items shall be cut, reinforced, drilled, and tapped at the factory for the specified hardware. 1. Doors: Steel, full flush type hollow metal, minimum thickness of face sheets 1.2 mm (0.0478 inch). Equip doors with interlocking aluminum thresholds and weatherstrips at head
38、s, jambs and meeting stiles. 2. Door Frames: Steel, not less than 1.5 mm (0.0598 inch) thick. 3. Metal surfaces of doors and frames shall be filled, ground smooth, cleaned and prepared to receive prime coat of paint. I. Windows: Windows shall be as specified in Section 08510, STEEL WINDOWS. 2.3 FACT
39、ORY FINISH AND PAINTING A. Wall and roof panels, including related components, accessories and fastenings, shall have approved factory finish as follows: Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-01-03M 13121-8 1. Finish on the weather face of
40、wall and roof panels, and related components shall be a prime coat of epoxy primer with a finish coat of Polyvinylidene Fluoride baked on coating thickness of (0.8-1.3 mils ) with the following performance characteristics. a. Salt Spray Test: ASTM B 117, minimum / (500) / (1000) / hours. Undercuttin
41、g of the paint film from the score line shall not exceed 2 mm (1/16 inch). b. Accelerated Weathering Test: ASTM G 23, Method 2, Type D apparatus minimum 2000 hours or Type EH apparatus minimum 500 hours, no checking, blistering or loss of adhesion; color change less than 5 NBS units by ASTM D 2244 a
42、nd chalking less than No. 8 rating by ASTM D 4214. c. Flexibility: ASTM D 522, Method A, 3 mm 1/8 inch diameter, 180 degree bend, no evidence of fracturing to the naked eye. d. Adhesion: ASTM D 3359, Method B, for laboratory test and film thickness less than 0.01 mm 5 mil and Method A for site tests
43、. There shall be no film removed by tape applied to 11 parallel cuts spaced 3 mm 1/8 inch apart plus 11 similar cuts at right angles. e. Impact: ASTM D 2794, no loss of adhesion after direct and reverse impact equal to 1.5 times metal thickness in mm mils, expressed in m-kg inch-pounds. 2. Finish on
44、 exposed face of liner panel shall be off white baked enamel suitable as a finished surface or as a base for field painting. B. Steel framing members shall be given one coat of shop paint. C. Doors, frames, and other similar components shall be bonderized and given one prime coat of baked-on shop pa
45、int, then factory applied finish coat. D. Windows and louvers shall be factory finished to match adjacent wall panels. E. Field paint all exterior exposed fastenings to match adjacent panels. F. Abraded surfaces shall be wire-brushed and touched up with the same materials as the shop prime or finish
46、 coat of paint. G. For color of finish coat, see Section, INTERIOR/EXTERIOR FINISHES, MATERIALS, AND FINISH SCHEDULE. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-01-03M 13121-9 PART 3 - EXECUTION 3.1 ERECTION A. Bolt settings and other dimensions
47、 shall be held to a tolerance of plus or minus 3 mm (1/8-inch). Use templates or other gaging devices to assure accurate spacing of anchor bolts. Bolt field connections unless otherwise shown or specified. 1. Set accurately bases or sill members to obtain uniform bearing and maintain established flo
48、or line elevation. Anchors and anchor bolts for securing members to concrete curb or structural steel sub-frame shall be of black steel, set accurately to templates and of proper size to adequately resist applicable design loads at the base. B. Wall Panels: Panels shall be applied with configuration
49、s running in a vertical position. Supply panels in single lengths from base to eave with no horizontal joints, except at the junction of door units, louver panels, and similar openings. End laps for panels shall be not less than 100 mm (four inches). Walls shall be closed at base and eave, and around doors, frames, louvers, and other similar openings by flashings and/or formed closures to assure
