PIP ARS13120 - Pre-Engineered Metal Buildings Specification

May 1999

Process Industry PracticesArchitectural

PIP ARS13120Pre-Engineered Metal Buildings Specification

PURPOSE AND USE OF PROCESS INDUSTRY PRACTICES

In an effort to minimize the cost of process industry facilities, this Practice hasbeen prepared from the technical requirements in the existing standards of majorindustrial users, contractors, or standards organizations. By harmonizing these technicalrequirements into a single set of Practices, administrative, application, and engineeringcosts to both the purchaser and the manufacturer should be reduced. While this Practiceis expected to incorporate the majority of requirements of most users, individualapplications may involve requirements that will be appended to and take precedence overthis Practice. Determinations concerning fitness for purpose and particular matters orapplication of the Practice to particular project or engineering situations should not bemade solely on information contained in these materials. The use of trade names fromtime to time should not be viewed as an expression of preference but rather recognized asnormal usage in the trade. Other brands having the same specifications are equallycorrect and may be substituted for those named. All practices or guidelines are intendedto be consistent with applicable laws and regulations including OSHA requirements. Tothe extent these practices or guidelines should conflict with OSHA or other applicablelaws or regulations, such laws or regulations must be followed. Consult an appropriateprofessional before applying or acting on any material contained in or suggested by thePractice.

© Process Industry Practices (PIP), Construction Industry Institute, TheUniversity of Texas at Austin, 3208 Red River Street, Suite 300, Austin,Texas 78705. PIP member companies may copy this practice for their internaluse.

Not printed with State funds

May 1999

Process Industry Practices Page 1 of 22

Process Industry PracticesArchitectural

PIP ARS13120Pre-Engineered Metal Buildings Specification

Table of Contents

1. Introduction.................................21.1 Purpose ............................................21.2 Scope ...............................................2

2. References ..................................22.1 Process Industry Practices (PIP) .......22.2 Industry Codes and Standards ..........22.3 Government Regulations ..................5

3. Definitions ...................................5

4. General ........................................64.1 Design and Performance

Requirements ...................................64.2 Submittals.........................................64.3 Product Handling, Delivery and

Storage.............................................84.4 Quality Assurance.............................8

5. Products......................................85.1 General ............................................ 85.2 Structural Materials .......................... 95.3 Roofing and Siding ......................... 105.4 Accessories .................................... 11

6. Execution ..................................156.1 Design............................................ 156.2 Fabrication ..................................... 166.3 Erection.......................................... 20

PIP ARS13120 Pre-Engineered Metal Buildings Specification May 1999

Page 2 of 22 Process Industry Practices

1. Introduction

1.1 Purpose

The purpose of this Practice is to provide pre-engineered metal building contractorsand manufacturers with a specification for pre-engineered buildings.

1.2 Scope

1.2.1 This Practice describes the requirements for design, fabrication, and erectionof pre-engineered metal buildings. This Practice does not address foundationrequirements, interior finish out, cranes, specialty requirements, or buildingsystems such as fire protection, electrical, or mechanical systems.

1.2.2 Any conflicts or inconsistencies between this Practice and other ContractDocuments shall be brought to the attention of the Buyer for resolution.

2. References

When adopted in this Practice or in the Contract Documents, the following PIP practices,codes and standards, and government regulations shall be considered an integral part of thisPractice. The edition in effect on the date of contract award shall be used, except as otherwisenoted. Short titles will be used herein when appropriate.

2.1 Process Industry Practices (PIP)

– ARS08111 - Standard Steel Doors and Frames Specification

– ARS08710 - Door Hardware Specification

– CVC01016 - Plant Site and Project Data Sheets

– STC01015 - Structural Design Criteria

2.2 Industry Codes and Standards

• Architectural Aluminum Manufacturers Association (AAMA)

− AAMA 701 - Combined Voluntary Specification for Pile Weather Strip

• American Institute of Steel Construction (AISC)

– Allowable Stress Design Manual of Steel Construction, 9th ed.

– Allowable Stress Design Manual of Steel Construction, Volume II:Connections, 9th ed.

– Allowable Stress Design Specification for Structural Joints UsingASTM A325 or A490 Bolts, November 13, 1985

– Code of Standard Practice for Steel Buildings and Bridges, June 10, 1992

– Detailing for Steel Construction

– Load and Resistance Factor Design Manual of Steel Construction,Volume I: Structural Members, Specifications and Codes, 2nd ed.

PIP ARS13120May 1999 Pre-Engineered Metal Buildings Specification


– Load and Resistance Factor Design Manual of Steel Construction,Volume II: Connections, 2nd ed.

– Load and Resistance Factor Design Specification for Structural Joints UsingASTM A325 or A490 Bolts, June 3, 1994

– Load and Resistance Factor Design Specification for Structural SteelBuildings

– Specification for Structural Steel Buildings Allowable Stress Design, PlasticDesign

• American Iron and Steel Institute (AISI)

– Cold-Formed Steel Design Manual, Part 1: Specification for the Design ofCold-Formed Steel Structural Members

– LRFD Cold-Formed Steel Design Manual, Part 1: Load and ResistanceFactor Design Specification for Cold-Formed Steel Structural Members

• American Society of Civil Engineers (ASCE)

– ASCE 7 - Minimum Design Loads for Buildings and Other Structures

• American Society of Testing and Materials (ASTM)

– ASTM A1 - Standard Specification for Carbon Steel Tee Rails

– ASTM A36/A36M - Standard Specification for Carbon Structural Steel

– ASTM A53 - Standard Specification for Pipe, Steel, Black and Hot-Dipped,Zinc-Coated, Welded and Seamless

– ASTM A106 - Standard Specification for Seamless Carbon Steel Pipe forHigh Temperature Service

– ASTM A123 - Standard Specification for Zinc (Hot-Dipped Galvanized)Coatings on Iron and Steel Products

– ASTM A153 - Standard Specification for Zinc Coating (Hot-Dip) on Ironand Steel Hardware (AASHTO No. M232)

– ASTM A307 - Standard Specification for Carbon Steel Bolts and Studs,60,000 PSI Tensile Strength

– ASTM A325 - Standard Specification for Structural Bolts, Steel, HeatTreated, 120/105 ksi Minimum Tensile Strength (AASHTO No. M164)

– ASTM A475 - Standard Specification for Zinc-Coated Steel Wire Strand

– ASTM A490 - Standard Specification for Heat-Treated Steel StructuralBolts, 150 ksi Minimum Tensile Strength (AASHTO No. M253)

– ASTM A500 - Standard Specification for Cold-Formed Welded andSeamless Carbon Steel Structural Tubing in Rounds and Shapes

– ASTM A501 - Standard Specification for Hot-Formed Welded and SeamlessCarbon Steel Structural Tubing

– ASTM A529 - Standard Specification for High-Strength Carbon-ManganeseSteel of Structural Quality



– ASTM A563 - Standard Specification for Carbon and Alloy Steel Nuts

– ASTM A570 - Standard Specification for Steel, Sheet and Strip, Carbon,Hot-Rolled, Structural Quality

– ASTM A572/A572M - Standard Specification for High-Strength Low-AlloyColumbium-Vanadium Structural Steel (AASHTO No. M223)

– ASTM A607 - Standard Specification for Steel, Sheet and Strip, High-Strength, Low-Alloy, Columbium or Vanadium, or Both, Hot-Rolled andCold-Rolled

– ASTM A653 - Standard Specification for Steel Sheet, Zinc-Coated(Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-DipProcess

– ASTM A759 - Standard Specification for Carbon Steel Crane Rails

– ASTM A792 - Standard Specification for Steel Sheet, 55% Aluminum-ZincAlloy-Coated by the Hot-Dip Process

– ASTM A992 - Steel for Structural Shapes for Use in Building Framing

– ASTM B221 - Standard Specification for Aluminum and Aluminum-AlloyExtruded Bars, Rods, Wire, Profiles, and Tubes

– ASTM B695 - Standard Specification for Coatings of Zinc MechanicallyDeposited on Iron and Steel (AASHTO No. M298)

– ASTM C509 - Standard Specification for Elastomeric Cellular PreformedGasket and Sealing Material

– ASTM C665 - Standard Specification for Mineral-Fiber Blanket ThermalInsulation for Light Frame Construction and Manufactured Housing

– ASTM C1036 - Standard Specification for Flat Glass

– ASTM D1494 - Standard Test Method for Diffuse Light TransmissionFactor of Reinforced Plastics Panels

– ASTM D2000 - Standard Classification System for Rubber Products inAutomotive Applications

– ASTM D2287 - Standard Specification for Nonrigid Vinyl Chloride Polymerand Copolymer Molding and Extrusion Compounds

– ASTM F436 - Standard Specification for Hardened Steel Washers(AASHTO No. M293)

– ASTM F959 - Standard Specification for Compressible-Washer-Type DirectTension Indicators for Use with Structural Fasteners

• American Welding Society (AWS)

– AWS D1.1 - Structural Welding Code-Steel, 1998

– AWS D1.3 - Structural Welding Code-Sheet Steel, 1998

• Flat Glass Marketing Association (FGMA)

– Glazing Manual



• Metal Building Manufacturers Association (MBMA)

– Low Rise Building Systems Manual

• Steel Joist Institute (SJI)

– Standard Specification for Steel Joists and Joist Girders

• Steel Structures Painting Council (SSPC)

– SSPC SP1 - Surface Preparation Specification No. 1, Solvent Cleaning

– SSPC SP3 - Surface Preparation Specification No. 3, Power Tool Cleaning

– SSPC SP7 - Surface Preparation Specification No. 7, Brush-Off BlastCleaning

2.3 Government Regulations

Federal Standards and Instructions of the Occupational Safety and HealthAdministration, including any additional requirements by state or local agencies thathave jurisdiction where the metal building is to be erected, shall apply.

• U.S. Department of Labor, Occupational Safety and Health Administration(OSHA)

– OSHA 29 CFR Part 1910 - Occupational Safety and Health Standards

– OSHA 29 CFR Part 1926 - Safety and Health Regulations for Construction

3. Definitions

Buyer: The party who awards the contract to the Contractor and/or Manufacturer. The Buyermay be the Owner or the Owner’s authorized agent.

Contract Documents: Any and all documents, including design drawings, that the Buyer hastransmitted or otherwise communicated, either by incorporation or reference, and made part ofthe legal contract agreement or purchase order between the Buyer and theContractor/Manufacturer.

Contractor: The party with overall responsibility for providing the materials and workassociated with building. Contractor also refers to any subcontractors used by the primarycontractor.

Manufacturer: The party responsible for the design and fabrication of the metal building. TheManufacturer may be a subcontractor of the Contractor.

Owner: The owner of the proposed building

Professional Engineer: An engineer registered or licensed to practice engineering as definedby the statutory laws of the locality in which the project is to be constructed



4. General

4.1 Design and Performance Requirements

4.1.1 Design Loads and Load Combinations

The Manufacturer shall engineer and design the pre-engineered metal buildingsystem to withstand the loads and load combinations specified in PIPSTC01015 and PIP CVC01016, unless otherwise required in the ContractDocuments.

Design criteria not specified in the Contract Documents shall be in accordancewith the MBMA Low Rise Building Systems Manual, Part I - DesignPractices.

4.1.2 Deflections and Drift Limits

4.1.2.1 Maximum deflections of primary and secondary structural membersshall be as follows, unless required otherwise in the ContractDocuments or if the governing codes are more stringent:

Wind Drift Limits of Frame System H/200

Wind Drift Limits of Frame System with BridgeCrane

H/200, Max. 2"

Seismic Drift Limits Per ASCE 7

Deflection of Frame System L/240

Purlins L/180

Girts L/120

Sheeting L/120

Elements Supporting Masonry Construction L/600

Where:H = height of structure at the elevation where the drift is beingcalculatedL = span length of the member being considered

4.1.2.2 Deflections for members supporting cranes shall be in accordancewith PIP STC01015, unless otherwise required in the ContractDocuments.

4.2 Submittals

Submittals shall be submitted to the Buyer within the specified time, unless otherwisenoted or otherwise required in the Contract Documents.

4.2.1 Anchor Bolt Locations and Reactions

Submit within 2 weeks after award of contract a drawing that provides thediameter, projection, and location of all required anchor bolts and theunfactored reactions at each point influencing the foundation for each designload (e.g., dead, live, snow, wind, earthquake, crane, etc.).



4.2.2 Structural Design Calculations

Submit within 4 weeks after award of contract one copy of all designcalculations for the building, sealed by a Professional Engineer, to include thefollowing:

• Summary of the criteria, codes, design loads, and load combinationsused for the building design

• Deflection and drift calculations

4.2.3 Fabrication and Erection Drawings for Review and Approval

Prior to the start of fabrication, submit complete and checked fabrication anderection drawings for review and approval to proceed. Drawings shall besealed by a Professional Engineer.

4.2.4 Final Fabrication and Erection Drawings Record

Submit final checked and sealed fabrication drawings and erection drawingsprior to delivery. All drawings shall identify materials of construction by typeof material, ASTM specification, gage, thickness, etc., as applicable.

4.2.5 Product Data

Submit Manufacturer’s product information, specifications, and installationinstructions for building components and accessories with the fabrication anderection drawings submitted for review and approval.

Accessory component drawings shall include locations and elevations forpersonnel doors, overhead doors, windows, ventilator, louvers, gutters,downspouts, and any other accessories. Submit specifications, data sheets, andwiring diagrams from the manufacturer of motor operated doors detailingpower, signal, and control systems with clear differentiation between field-installed and manufacturer-installed wiring.

4.2.6 Maintenance Manual

Prior to mechanical completion, submit two identical three-ring bindermanuals that include the following:

• Outer jacket labeled to read: “Maintenance Manual” - Name ofProject, Completed (date: )

• Table of Contents

• List of prime and subcontractors with key personnel, addresses, andphone numbers

• Letters of guarantee and warranties

• Warning labels for posting by Owner at roof access

• Maintenance instructions

• Any other relevant information



4.2.7 Samples

Submit one of each of the following samples prior to fabrication:

1. 12" x actual width samples of roofing, siding, and soffit panels withrequired finishes, including specified style and texture

2. Fasteners (including standing seam roof clips) for application ofroofing, siding, and soffit panels

3. A minimum 12" x 12" sample of the side lap seams for both sides of atypical panel, including any sealants and closures

4. Color chips for color selections by the Buyer

4.3 Product Handling, Delivery and Storage

4.3.1 Deliver and store prefabricated components, sheets, panels, and othermanufactured items so that they will not be damaged or deformed.

4.3.2 Store materials, if subjected to water accumulation, in such a manner so thatthey will drain freely. Do not store sheets and panels in contact with othermaterials that might cause staining or corrosion.

4.3.3 Damaged material shall be reported to the Buyer to determine if replacementis required.

4.4 Quality Assurance

4.4.1 Unless otherwise approved by the Buyer, Contractor shall have a minimum oftwo years experience of successful construction of pre-engineered metalbuilding. The Contractor’s job supervisor shall have a minimum of five yearsexperience in the construction of similar buildings.

4.4.2 Unless exempted by the Buyer, the building system Manufacturer shall beAISC Category MB certified.

4.4.3 The Contractor and Manufacturer shall be responsible for quality control ofall materials and workmanship. Inspections or approvals from the Buyer shallin no way relieve the Contractor or Manufacturer from their obligations toperform the work in accordance with the Contract Documents.

4.4.4 The Buyer has the right to inspect all materials and workmanship. The Buyermay reject improper, inferior, defective, or unsuitable materials andworkmanship. All rejected materials and workmanship shall be replaced by theContractor as directed by the Buyer.

5. Products

5.1 General

Materials shall be as specified herein, in accordance with the Contract Documents, andas required by the Manufacturer responsible for the design of the building.Substitutions shall not be allowed without prior written approval from the Buyer.



5.2 Structural Materials

5.2.1 Hot Rolled Structural Shapes, Plates and Bars (IncludingBuilt-Up Members)

• ASTM A36

• ASTM A529, Grade 50



• ASTM A607 Class 1 or 2, Grade 50

• ASTM A992

5.2.2 Cold Formed Structural Shapes


• ASTM A607 Class 1 or 2, Grade 55

• ASTM A653 SS Class 1, Grade 50

5.2.3 Pipe

• ASTM A53 Type E or S, Grade B or ASTM A106, Grade B

5.2.4 Structural Tube

• ASTM A501 or ASTM A500, Grade B

5.2.5 Wire Strand (Cable)

• ASTM A475, Extra High Strength (7 wires per strand)

5.2.6 High Strength Bolt Assemblies

• Bolt - ASTM A325 Type 1 or ASTM A490 (only if required bydesign)

• Washer - ASTM F436

• Direct Tension Indicator (DTI) washers - ASTM F959

• Heavy Hex Nut - ASTM A563

5.2.7 Standard Bolt Assemblies

• Bolt - ASTM A307, Grade A Heavy Hex



5.2.8 Anchor Bolt Assemblies

• Threaded - ASTM A36

• Headed - ASTM A307, Grade A Heavy Hex




• Plate Washer - ASTM A36


5.2.9 Weld Filler Metal

• Structural Shapes - Per AWS D1.1, Section 3.3 (including Table 3.1)with an electrode strength of 58 ksi minimum yield strength and70 ksi minimum tensile strength (e.g., use E70XX for SMAW,F7XX-EXXX for SAW, ER70S-X for GMAW, and E7XT-X forFCAW)

• Sheet Steel - Per AWS D1.3, Section 1.4 (including Table 1.1)

5.2.10 Crane Rails

• Rails Less than 104 lb./yd. - ASTM A1

• Rails 104 to 175 lb./yd. - ASTM A759

5.2.11 Steel Joists

• Per SJI Standard Specification for Steel Joists and Joist Girders

5.3 Roofing and Siding

5.3.1 Steel Sheets

• ASTM A570 - Grade 50 or 55

• ASTM A607 - Class 1 or 2, Grade 50 or higher

• ASTM A653 - SS, either Grade 50, Class 1 or 3 or Grade 80

• ASTM A792 - SS, either Grade 50 Type A or Grade 80

5.3.2 Sheet Coatings

• Zinc Coating - ASTM A653, G-90

• Aluminum-Zinc Alloy Coating - ASTM A792, AZ-55

• Prime/Painted - Per Contract Documents or Manufacturer’s standards

5.3.3 Trim

Flashing, corner trim, caps, and closure pieces shall be of the same material,finish and color as adjacent material, unless otherwise required in the ContractDocuments. Profile shall be selected by Manufacturer to suit.

5.3.4 Insulation

Insulation shall be rigid, semi-rigid, ASTM C665, Batt, or Roll, Faced orUnfaced with a thickness or R-rating as required in the Contract Documents.UL flame spread classification shall be 25 or less.



5.3.5 Fasteners

• Wall and Roofing Through Fasteners - Manufacturer’s standard self-drilling stainless steel screws with sealing washer. All exposedfastener heads shall be factory colored to match color of panels.

• Clips for Standing Seam Panels - Manufacturer’s standard slidingdesign to allow for unrestrained expansion and contraction movementof panels, complete with plated self-drilling fasteners at each clip

• Exposed Fasteners for Eave, End Lap, Ridge Cover, Trim, andFlashing - Manufacturer’s standard self-drilling stainless steel screwswith sealing washer. All exposed fastener heads shall be factorycolored to match color of panels.

5.3.6 Sealant

• Factory-Applied Roof Panel - Non-shrinking, non-drying, butyl-basedsealant specifically formulated for factory application in standingseams and to allow roof panel assembly at temperatures from minus10° F to 140° F or Manufacturer’s standard type as approved by theBuyer

• Field-Applied Roof Panel Sealant - Approved type, non-shrinking,non-drying, butyl-based sealant specifically formulated for roofapplication at temperatures from 20° F to 120° F or Manufacturer’sstandard type as approved by the Buyer

5.4 Accessories

5.4.1 Personnel Doors

Refer to PIP ARS08111.

5.4.2 Door Hardware

Refer to PIP ARS08710.

5.4.3 Overhead Roll-up Doors

5.4.3.1 Provide complete overhead roll-up door assemblies including doorcurtain, guides, counterbalance, hardware, operators, andinstallation accessories as specified herein, unless otherwiserequired in the Contract Documents.

5.4.3.2 Doors and Frames: Design for the wind loading specified in Section4.1.

5.4.3.3 Door Curtain: Interlocking steel slat door curtain with one-pieceslats for the full length of door width. Form from minimum 22-gage, structural sheet steel.

5.4.3.4 Bottom Bar: Provide bottom bar on door curtain consisting of two1/8" thick angles of the same metal as the door curtain slats.



Provide flexible rubber, vinyl, or neoprene weather seal and cushionbumper on the bottom bar.

5.4.3.5 Vision Panel: 1/4" thick cast thermo-plastic, methyl methacrylatevision panels set in neoprene or vinyl glazing channels in thearrangement indicated

5.4.3.6 Weather Seals: 1/8" thick continuous rubber or neoprene sheetweather seals on metal pressure bars secured to inside of curtaincoil hood. At door jambs, use 1/8" thick continuous strip secured toexterior side of jamb guide.

5.4.3.7 Hood: Form to enclose the coiled curtain and operating mechanismentirely at the opening head and to act as a weather seal. Contour tosuit end brackets to which attached. Roll and reinforce top andbottom edges for stiffness. Provide closed ends for surface-mountedhoods and any portion of between-jamb mounting projecting beyondwall face. Provide intermediate support brackets to prevent sag.

Fabricate hoods for steel doors of minimum 24-gage zinc-coatedsteel sheet. Phosphate treat before fabrication.

5.4.3.8 Shop Finish: As specified in the Contract Documents

5.4.3.9 Chain Hoist Operation: Provide operator consisting of an endlesscadmium-plated alloy steel hand chain, chain pocket wheel andguard, and geared reduction unit with maximum 35-lb. pull for dooroperation. Design chain hoist with self-locking mechanism allowingcurtain to be stopped at any point in its travel and to remain in thatposition until movement is reactivated. Furnish chain with chainholder secured to operator guide.

5.4.3.10 Electric Door Operators: Furnish electric operator assembly of sizeand capacity recommended by manufacturer, complete withNEMA-rated motor and factory-prewired motor controls, gearreduction unit, solenoid-operated brake, remote control stations,control devices, conduit and wiring from controls to motor andcentral stations, and accessories required for proper operation.Electric operator shall meet the Buyer’s area classificationrequirements in accordance with the Contract Documents.

a. Provide a hand-operated disconnect or mechanism forautomatically engaging a sprocket and chain operator andreleasing the brake for emergency manual operation. Includeinterlock device to automatically prevent motor fromoperating when manual operator is engaged.

b. Electric Motors: High-starting torque, reversible, constantduty, Class A insulated electric motor with overloadprotection, sized to move door in either direction, from anyposition, at not less than 2/3 ft. nor more than 1 ft. per



second. Coordinate wiring requirements and currentcharacteristics of motors with building electrical system.

c. Furnish open-drip-proof-type motor and controller withNEMA Type 1 enclosure.

d. Remote Control Station: NEMA-approved, momentarycontact, 3-button control station with push button controlslabeled “open,” “close,” and “stop”

1. Interior Units: Full-guarded, surface-mounted, heavy-duty remote control stations, with general-purposeNEMA Type 1 enclosure

2. Exterior Units: Full-guarded, surface-mounted,standard duty weatherproof-type remote controlstations with NEMA Type 4 enclosures. Provideunits designed for key operation.

e. Automatic Reversing Control: Furnish each door with anelectric automatic safety switch, extending full width of thedoor bottom, located within a neoprene or rubber astragalmounted to bottom rail of the door or an electric eye system.Contact with an obstruction before fully closing willimmediately stop downward travel and reverse direction to thefully opened position.

5.4.4 Aluminum Windows

Aluminum windows shall be designed and constructed for integral installationwith the system. Unless required otherwise in the Contract Documents,provide building manufacturer’s standard insulated double-pane window(AAMA HS-C20 horizontal sliding, commercial grade) with medium naturalanodized finish (NAAMM AA-C22A31). (Alternate if selected by Buyer:fixed sash AAMA, Grade C20).

5.4.4.1 Aluminum Extruded Frame: Material shall comply withASTM B221.

a. Provide “Thermal-Break” construction. Separate frame andsash members exposed on the exterior from metal partsexposed on the interior by a continuous gasket or filler ofrubber or plastic, locked into construction.

b. Mullions: Provide mullions between adjacent windows,fabricated of extruded aluminum matching the finish ofwindow units.

5.4.4.2 Fasteners: Aluminum, stainless steel, or other material warranted bythe Manufacturer to be non-corrosive and compatible withaluminum window members, trim, hardware, anchors, and othercomponents of window units



5.4.4.3 Anchors, Clips and Window Accessories: Depending on strengthand corrosion-inhibiting requirements, fabricate of aluminum,stainless steel, or hot-dip zinc-coated steel (complying withASTM A123).

5.4.4.4 Compression Glazing Strips and Weather-Stripping: Moldedneoprene gaskets complying with ASTM D2000 designation2BC415 to 3BC620, molded PVC gaskets complying withASTM D2287, Grade 4, or molded expanded neoprene gasketscomplying with ASTM C509

5.4.4.5 Sliding Weather-Stripping: Woven pile weather-stripping of wool,polypropylene, or nylon pile and resin-impregnated backing fabric,and aluminum backing strip. Comply with AAMA 701.

5.4.4.6 Sealants: Type recommended by Manufacturer for joint size ormovement, to remain permanently elastic, non-shrinking, and non-migrating

5.4.4.7 Insect Screens: Provide removable insect screen on each operableexterior sash, with finish matching window.

5.4.4.8 Pre-glazed Construction: To the greatest extent possible, glaze unitsat the shop prior to installation.

5.4.4.9 Glass: Unless required otherwise in the Contract Documents,comply with ASTM C1036 for glass type, class, quality, style, kindand form and with recommendations of the FGMA GlazingManual.

5.4.5 Louvers

Wall Louvers: Provide louvers as required in the Contract Documents.Louvers shall be of minimum 18-gage steel. Fold or bend blades at edges setat an angle that excludes driving rains, and secure to frames by riveting orwelding. Prime and finish to match wall panels.

a. Provide vertical mullions for louvers 4 feet and larger in width, with onemullion for each 4 feet of width.

b. Provide flanges on interior face of frames where air intake or exhaustlouvers are indicated to be connected with mechanically operateddampers or metal ductwork.

c. Provide galvanized steel insect screens in rewirable frames on exteriorface of louvers. Secure with clips to ensure ease of removal for cleaningand rewiring. Fabricate screen frames to match louvers.

5.4.6 Translucent Panels

Wall and roof light transmitting panels shall conform to the wall and roofpanel configurations and shall be of minimum 10 oz., one-piece, flexible,translucent, fiberglass reinforced resins. Roof panels shall be capable ofsupporting a 200-pound concentrated load without failure. The panels shall be



uniform white with heat transmission of 25% and light transmission of 55% inaccordance with ASTM D1494, unless noted otherwise in the ContractDocuments. Other types of skylights may be used when specified or approvedby Buyer.

5.4.7 Gutters and Downspouts

5.4.7.1 Gutters shall be suspended box sections of minimum 26-gagegalvanized steel formed to match the configuration of the gabletrim. Gutters shall be independent of the roof seal and shall beattached to the eave strut adapter by means of a gutter hanger.

5.4.7.2 Downspouts shall be located in accordance with the ContractDocuments and shall be minimum 26-gage galvanized factory-colored steel to match the siding, with a minimum cross section of20 square inches. A 45-degree elbow shall be provided at the baseof all downspouts, unless otherwise required.

5.4.7.3 Downspout straps shall be galvanized steel, 1/16" x 1" factory-colored to match the downspout.

5.4.8 Ventilators

Provide continuous or individual ridge ventilators as required by the ContractDocuments. Provide continuous ridge ventilators in standard length sections atthe locations indicated. Provide throat size and total length indicated, completewith side baffles, ventilator assembly, operating damper, hardware, birdscreen, end caps, splice plates, flashing, reinforcing diaphragms, closures, andfasteners. Finish shall match roof panels.

6. Execution

6.1 Design

6.1.1 The metal building shall be engineered in accordance with the requirementsspecified herein and the requirements of the other Contract Documents.Changes from the requirements in the Contract Documents shall be approvedby the Buyer. The engineering of the building shall be by, or in the responsiblecharge of, a Professional Engineer.

6.1.2 Structural steel design shall be in accordance with the AISC Specification forStructural Steel Buildings Allowable Stress Design, Plastic Design or theAISC Load and Resistance Factor Design Specification for Structural SteelBuildings, as applicable.

6.1.3 Cold-formed steel design shall be in accordance with the AISI Cold-FormedSteel Design Manual, Part 1, Specification for the Design of Cold-FormedSteel Structural Members or the AISI LRFD Cold-Formed Steel DesignManual, Part 1, Load and Resistance Factor Design Specification for Cold-Formed Steel Structural Members, as applicable.



6.1.4 Structural connections shall be in accordance with Sections 6.2.5 and 6.2.6.All field connections shall be bolted and all shop connections shall be eitherbolted or welded, unless otherwise required by the design.

6.1.5 Roofing, siding, and other accessories shall be designed in accordance with theMBMA Low Rise Building Systems Manual.

6.1.6 Crane supports, when required, shall be designed in accordance withPIP STC01015 and shall meet the requirements of the Contract Documents.

6.2 Fabrication

6.2.1 Hot-rolled and built-up members shall be fabricated in accordance with theAISC Code of Standard Practice for Steel Buildings and Bridges and eitherthe AISC Specification for Structural Steel Buildings Allowable StressDesign, Plastic Design or the AISC Load and Resistance Factor DesignSpecification for Structural Steel Buildings, as applicable, and subject tomodification by the Contract Documents, state or local laws, and buildingcodes.

6.2.2 Cold-form structural members shall be fabricated in accordance with the“Common Industry Practices” in the MBMA Low Rise Building SystemsManual.

6.2.3 Fabrication tolerances for hot-rolled members shall be in accordance with theAISC Code of Standard Practice for Steel Buildings and Bridges.Fabrication tolerances for built-up members and cold-formed structuralmembers shall be in accordance with Section 9 of the “Common IndustryPractices” in the MBMA Low Rise Building Systems Manual.

6.2.4 Welding of structural steel shall be in accordance with AWS D1.1. Welding ofsheet steel shall be in accordance with AWS D1.3.

6.2.5 Bolted Connections

6.2.5.1 Design, detailing, and fabrication of bolted connections shall be inaccordance with either AISC’s ASD or LRFD design method (thesame method used for the design of the steel).

6.2.5.2 ASD-based connections shall conform to the AISC AllowableStress Design Specification for Structural Joints Using ASTMA325 or A490 Bolts, the AISC Allowable Stress Design Manual ofSteel Construction, the AISC Allowable Stress Design Manual ofSteel Construction, Volume II: Connections, and the AISCDetailing for Steel Construction.

6.2.5.3 LRFD-based connection design shall conform to the AISC Loadand Factor Design Specification for Structural Joints Using ASTMA325 or A490 Bolts, the AISC Load and Resistance Factor DesignManual of Steel Construction, Volumes I and II, and the AISCDetailing for Steel Construction.



6.2.5.4 3/4" diameter ASTM A325 high-strength bolt assemblies shall beused in all primary bolted structural connections, unless otherwiserequired by the design.

6.2.5.5 ASTM A307 or ASTM A325 bolt assemblies shall be used forsecondary bolted connections such as purlin, girts, door frames, etc.

6.2.5.6 If direct tension indicator washers are used, they shall conform toASTM F959 and shall be installed according to the Manufacturer’spublished specifications.

6.2.5.7 Unless otherwise required, all structural bolts except for ASTMA490 bolts shall be galvanized.

6.2.5.8 All nuts for high-strength bolts shall be wax-dipped to reducetorque during installation.

6.2.6 Welded Connections

6.2.6.1 Design, detailing, and fabrication of welded connections shall be inaccordance with either AISC’s ASD or LRFD design method (thesame method used for the design of the steel).

6.2.6.2 ASD-based connections shall conform to AWS D1.1, AWS D1.3,the AISC Allowable Stress Design Manual of Steel Construction,the AISC Manual of Steel Construction, Volume II: Connections,and the AISC Detailing for Steel Construction.

6.2.6.3 LRFD-based connection design shall conform to AWS D1.1,AWS D1.3, the AISC Load and Resistance Factor Design Manualof Steel Construction, Volumes I and II, and the AISC Detailingfor Steel Construction.

6.2.7 Primary Structural Frames

Fabricate from hot-rolled structural steel shapes, built-up factory-welded,“I-beam” shape or open web type frames consisting of tapered or parallelflange beams and tapered columns. Furnish frames with attachment plates,bearing plates, and splice members, factory-drilled or punched for field-boltedassembly.

6.2.8 Primary Endwall Framing

6.2.8.1 Endwall Columns: Rolled shapes, built-up factory-welded “I”shape, or cold-formed “C” sections, fabricated from minimum14-gage steel

6.2.8.2 Endwall Beams: Rolled “C” shapes or “C”-shaped cold-formedsections fabricated from minimum 16-gage steel

6.2.9 Secondary Structural Framing

6.2.9.1 Purlins and Girts: “C”- or “Z”-shaped sections fabricated fromminimum 16-gage roll-formed steel. Purlin spacers shall befabricated from 14-gage cold-formed galvanized steel sections. “C”-shaped girts shall be installed toe down.



6.2.9.2 Wind Bracing: Steel rod or wire strand (cable) bracing, completewith necessary slope washers, flat washers and adjusting nuts ateach end. Where applicable, wall panels may utilize diaphragmaction bracing in lieu of steel rod or wire strand bracing.

6.2.10 Galvanizing and Painting

6.2.10.1 Unless required otherwise in the Contract Documents, all hot-rolledand built-up members shall be shop-primed. All cold-formedsections shall be galvanized.

6.2.10.2 Shop-Primed: Clean surfaces to be primed of loose mill scale, rust,dirt, oil, grease and other matter precluding paint bond. Followprocedures of SSPC SP3, SSPC SP7, and SSPC SP1, as applicable.Prime members with the Manufacturer’s standard rust-inhibitiveprimer, unless otherwise required in the Contract Documents.

6.2.10.3 When specified in the Contract Documents, hot-rolled and built-upmembers shall be galvanized in accordance with ASTM A123

6.2.10.4 Galvanize cold-formed sections in accordance with ASTM A653

6.2.10.5 Galvanize bolts, nuts and washers in accordance with ASTM B695[or ASTM A153 for A325 Type 1 bolts].

6.2.10.6 Roof, Siding, and Trim Finish: Provide shop-applied fluoropolymerfinish, minimum 1 mil thick, to galvanized steel roofing and sidingpanels and all related trim, per Manufacturer’s standard paintingsystem unless required otherwise in the Contract Documents. Roof,siding, trim, gutters, and downspouts shall match in color unlessotherwise specified in the Contract Documents.

6.2.11 Roofing - Single Sheet Sloped Roof System

6.2.11.1 Manufacturer shall provide roof panels precision roll-formed fromminimum 24-gage sheet steel.

6.2.11.2 Panel edges for standing seam roofing shall be fabricated for amachine-closed, double lock (360 degrees) seam with factory-applied sealant.

6.2.11.3 Panel edges for through-fastened roofing shall be fabricated for sidelaps of one full major rib.

6.2.11.4 End splices, where occurring, shall be over a structural memberwith a minimum 6" lap. The panel ends shall be factory-notched forend splicing.

6.2.11.5 Panels shall be the longest length possible to minimize end splices.

6.2.11.6 Perimeter trim, start/finish panels, ridge panels, and transitionflashing shall be provided as required for the roofing system andshall be designed to accommodate the roof’s expansion andcontraction.



6.2.11.7 Closures shall be of the exact profile as the panel to form a weathertight seal.

6.2.11.8 Sealants and fasteners shall be provided as required by the design toform a weather tight installation.

6.2.12 Siding - Single Sheet Wall System

6.2.12.1 Manufacturer shall provide a wall panel precision roll-formed fromminimum 26-gage sheet steel.

6.2.12.2 Panel side laps shall be formed by lapping major ribs at the paneledges. The underlapping rib shall have full bearing legs to supportthe side lap.

6.2.12.3 Panel end splices, where occurring, shall be over a structuralmember with a minimum 4" lap.

6.2.12.4 Panels shall be the longest length possible to minimize end laps.

6.2.12.5 Corner trim, base trim, and transition flashings shall be provided asrequired for the wall system and shall provide for a weather tightinstallation.

6.2.12.6 Sealants and fasteners shall be provided as required by the design toform a weather tight installation.

6.2.13 Gutters and Downspouts

6.2.13.1 Provide gutters and downspouts in accordance with the ContractDocuments.

6.2.13.2 Gutter hangers shall be spaced at maximum 4'-0" centers.

6.2.13.3 Gutter sections shall be provided in the longest continuous sectionspossible. At joints, sections shall be lapped a minimum of 4" andsealed with sealant, then fastened with fasteners.

6.2.13.4 Gutter end closures shall be sealed with sealant and fastened withpop rivets.

6.2.13.5 Downspouts shall be attached to a thimble installed in the gutter.Downspouts shall be attached to the wall panel using straps onmaximum 10'-0" centers.

6.2.14 Canopies and Overhangs

Eave and/or gable canopies and overhangs shall be located as indicated in theContract Documents. Roof, siding, trim, and fasteners shall match building incolor and finish.

6.2.15 Mezzanine and Platforms

Mezzanine and platform framing, flooring, grating, deck, railing, ladders, andstairs shall be provided as required in the Contract Documents.



6.2.16 Framed Openings

Provide shapes of proper design and size to reinforce openings and to carryimposed loads and vibrations, including equipment furnished undermechanical and electrical work as indicated in the Contract Documents.Securely attach to building structural frame.

6.3 Erection

Unless otherwise specified herein or in the Contract Documents, erection shallbe in accordance with Section 6 of the “Common Industry Practices” in theMBMA Low Rise Metal Building Systems Manual.

6.3.1 Inspection

Contractor shall inspect the work area and verify that conditions aresatisfactory to begin work. This shall include inspection of column bearingsurface, foundation level and elevation, and anchor bolt locations andprojections. Contractor shall notify the Buyer in writing of any unsatisfactoryconditions.

6.3.2 Structural and Miscellaneous Steel

Erection of structural and miscellaneous steel shall be in accordance with theManufacturer’s drawings, the Contract Documents, AISC Code of StandardPractice for Steel Buildings and Bridges, OSHA Part 1910 and Part 1926,and any applicable state or local regulations or codes.

6.3.3 Roofing and Siding

6.3.3.1 Contractor shall install roofing and siding in accordance with theManufacturer’s requirements, as specified herein, and in the otherContract Documents.

6.3.3.2 Lap ribbed or fluted sheets one full rib corrugation. Apply panelsand associated items for neat and weather tight enclosure. Avoid“panel creep” or application not true to line. Protect factory finishesfrom damage.

a. Field cutting of exterior panels by torch shall not bepermitted.

b. Provide weather seal under ridge cap. Flash and seal roofpanels at eave and rake with rubber, neoprene, or otherclosures to exclude weather.

6.3.3.3 Standing Seam Roof Panel System: Fasten roof panels to purlinswith concealed clip in accordance with the Manufacturer’sinstructions.

a. Install clips at each support.

b. At end laps of panels, install sealant between panels.



c. Install factory-caulked cleats at standing-seam joints.Machine-seam cleats to the panels to provide a weather tightjoint.

6.3.3.4 Through-Fastened Roofing: Fasten roof panels to purlin withfasteners and spacing required by the Manufacturer. Install sealantcontinuously at all panel side and end laps.

6.3.3.5 Wall Sheets: Apply elastomeric sealant continuously between metalbase channel (sill angle) and foundation, and elsewhere as necessaryfor waterproofing. Handle and apply sealant and backup inaccordance with the sealant Manufacturer’s recommendations.

a. Unless required otherwise by the Manufacturer, align bottomof wall panels and fasten panels with blind rivets, bolts, orself-tapping screws. Fasten flashings and trim aroundopenings and similar elements with self-tapping screws.Fasten window and door frames with machine screws orbolts. When building height requires two rows of panels atgable ends, align lap of gable panels over wall panels at eaveheight.

b. Install fasteners with power tools having controlled torqueadjusted to compress neoprene washer tightly without damageto washer, screw threads, or panels.

c. Provide weatherproof escutcheons or flashing for pipe,conduit, cable tray, and duct penetrating exterior walls asrequired in the Contract Documents.

6.3.4 Accessories

6.3.4.1 Sheet Metal Accessories: Install gutters, downspouts, ventilatorlouvers, and other sheet metal accessories in accordance withManufacturer’s recommendations for positive anchorage to buildingand weather tight mounting. Adjust operating mechanism forprecise operation.

6.3.4.2 Hollow Metal Doors and Frames: Install doors and frames straight,plumb, and level. Securely anchor frames to building structure. Setunits with 1/8" maximum clearance between door and frame atjambs and head and 3/4" maximum between door and floor. Adjusthardware for proper operation.

6.3.4.3 Overhead Doors: Set doors and operating equipment complete withnecessary hardware, jamb and head mold stops, anchors, inserts,hangers, and equipment supports in accordance withManufacturer’s instructions. Adjust moving hardware for properoperation.

6.3.4.4 Windows: Anchor windows securely in place. Seal perimeter ofeach unit with the elastomeric sealant used for panels. Adjust andlubricate operating sash and hardware for proper operation. Clean



surfaces of window units. Mount screens direct to frames withtapped screw clips.

6.3.4.5 Field Glazing: Clean channel surfaces and prime as recommendedby sealant Manufacturer. Cut glass to required size for measuredopening; provide adequate edge clearance and glass bite all around.Do not install glass that has significant edge damage or otherdefects. Replace glass that is broken or damaged. Each piece ofexterior glass must be airtight and watertight through normalweather/temperature cycles and through normal door/windowoperation. Factory-sealed double pane windows shall be repaired asrequired by the Manufacturer.

6.3.4.6 Insulation: Install insulation concurrently with installation of roofand wall panels in accordance with Manufacturer’s directions.Install blankets straight and true in one-piece lengths with both setsof tabs sealed to provide a complete vapor barrier. Locate insulationon inside of roof and wall sheets, extending across the flange ofpurlin or girt members and held taut and snug to panels withretainer clips. Install retainer strips at each longitudinal joint,straight, and taut to hold insulation in place.

6.3.4.6 Translucent Panels: Attach translucent panels to structural framingand roof and wall panels in accordance with the Manufacturer’sinstructions for weather tight installation.

6.3.5 Cleaning and Touch-Up

Clean all component surfaces. Touch up abrasions, marks, skips, and otherdefects to finished surfaces with same type of finish.