Southeast Structures. Prefabricated Steel Building Structures.

Section 1. General Information

1.1 SCOPE
1.1.1 These specifications define the materials, products, design criteria, and fabrication of the metal building system required to withstand the forces imposed by snow, wind, seismic activity, structural movement including thermal expansion and contraction as well as in-service use conditions imposed upon the building structure.
1.1.2 These specifications are an outline of material as well as performance requirements to insure that the architect, engineer, builder and owner understands the basis for design, manufacture, and application of the metal building system.

1.2 BUILDING DESCRIPTION
1.2.1 Rigid Frame Clear Span: Rigid frame clear span is a solid web continuous frame design with either tapered or uniform depth (straight) columns.
1.2.2 Rigid Frame Multi-Span: Rigid frame multi-span is solid web continuous frame design with either tapered or straight columns including one, two, or more interior columns.
1.2.3 Single Slope: Single slope is a solid web continuous frame design with the roof sloping from side to side in lieu of ridge to side. Single slope buildings are designed with tapered or straight columns and can be either clear span or multi-span.
1.2.4 Lean-To: Lean-to is a solid web simple frame design with tapered or straight columns with a roof slope from side to side (single slope). This frame design requires a bolted connection to an adjacent freestanding structure.
1.2.5 Sidewall Girts: Sidewall girts are typically designed to by-pass the column, however, a flush, in the column line girt system is readily available upon request.
1.2.6 Endwall Girts: Endwall girts are typically designed to be in a flush condition with the column, however, a by-pass the column line girt system is also readily available upon request.

1.3 BUILDING NOMENCLATURE
1.3.1 Building “WIDTH” is measured from outside to outside of sidewall girts.
1.3.2 Building “LENGTH” is measured from outside to outside of endwall girts.
1.3.3 Building “EAVE HEIGHT” is measured from the bottom of the base plate on the main frame columns to the top of the eave strut.
1.3.4 Building “ROOF SLOPE” is expressed as inches of rise for 12 inches of horizontal run.
1.3.5 Building “BAY SPACING” is defined as the dimension between frame centerlines. End bays are measured from the outside of the endwall girt to the centerline of the first interior frame.

1.4 QUALITY ASSURANCE
1.4.1 The metal building manufacturer shall be a certified member of the (AISC) American Institute of Steel Construction, Metal Building Manufacturers Association (MBMA), and Systems Builders Association (SBA).
1.4.2 Approved Building System Manufacturers: A & S Building Systems
1.4.3 All Building system manufacturer’s drawings and design analysis shall bear the respective seal of a registered professional engineer.
1.4.4 Qualifications of welders: Welders shall be qualified in accordance with AWS D1.1.
1.4.5 Qualifications of erectors: The erector shall be routinely engaged in similar size projects as well as complexity for a minimum of five years. The erector shall be familiar and experienced with the building system manufacturer.

SECTION 2. STRUCTURAL STEEL DESIGN
2.1 GENERAL
2.1.1 The building manufacturer shall use standards, specifications, recommendations, findings and/or interpretations of professionally recognized groups such as AISC, AISI, AAMA, AWS, ASTM, MBMA, Federal Specifications, and published research by MBMA as the basis for establishing design, drafting, fabrication, and quality criteria, practices, and tolerances. For convenience, one or more source may be referenced in a particular portion of these specifications. In all instances, however, the manufacturer’s design, drafting, fabrication and quality criteria, practices, and tolerances shall govern, unless specifically countermanded by the contract documents.
2.1.2 Structural mill sections or welded up plate sections shall be designed in accordance with AISC’s “Specification for the Design, Fabrication, and Erection of Structural Steel for Buildings.”
2.1.3 Cold-formed steel structural members shall be designed in accordance with AISI’s “Specification for the Design of Cold-formed Steel Structural Members.”

2.2 DESIGN LOADS
2.2.1 Design loads shall be as specified and set forth in the contract, as shall be applied in accordance with the manufacturer’s standard design practices. Design loads shall include roof live load, applicable snow loads, wind loads, seismic loads, and collateral loads. It also includes any auxiliary equipment loads, and/or specific loads.
2.2.2 Dead Load: The actual weight of the building system that is determined by the manufacturer.
2.2.3 Roof Live Load: The load produced by maintenance activities, rain, erection activities, and other movable or moving loads, but not including wind, snow, seismic, crane, or dead loads.
2.2.4 Roof Snow Load: The gravity load induced by the weight of snow or ice on the roof, assumed to act on the horizontal projection of the roof.
2.2.5 Wind Load: The load on a structure induced by the forces of wind blowing from any horizontal direction.
2.2.6 Collateral Load: The weight of any non-moving equipment or material, such as ceilings, electrical or mechanical equipment, sprinkler systems, or plumbing.
2.2.7 Auxiliary Load: The dynamic load induced by cranes, conveyors, or other material handling systems.
2.2.8 Seismic Load: The horizontal load acting in any direction on a structural system due to action of an earthquake.
2.2.9 Floor (mezzanine) Live Load: The load induced on a floor system by occupants of a building, furniture, equipment, walls, stored materials, etc.

SECTION 3. BASIC MATERIAL SPECIFICATIONS
3.1 PRIMARY FRAMING STEEL
3.1.1 Steel for hot-rolled shapes shall conform to the requirements of ASTM Specifications A36, with a minimum yield of 36, 42, or 50 ksi.
3.1.2 Plate steel for built-up sections shall conform to the physical requirements of ASTM A570, ASTM 572 or ASTM A36 as applicable, with minimum yield of 42,000, 50,000, or 55,000 psi as indicated by the design requirements.
3.1.3 Steel for endwall “C” sections shall conform to the physical requirements of ASTM A607 Grade 55 and have a minimum yield of 55,000 psi.

3.2 SECONDARY FRAMING STEEL
3.2.1 Steel used to fabricate (form) purlins, girts, eave struts, and “C” sections shall conform to the physical requirements of ASTM A607 Grade 55 and have a minimum yield of 55,000 psi.

3.3 ROOF PANEL AND WALL PANEL MATERIAL
3.3.1 Panel material as specified shall be 26 gauge steel-coated both sides with a layer of aluminum-zinc alloy (approximately 55% aluminum, 45% zinc) applied by a continuous hot-dip method. Triple spot minimum 0.55 ounce per square foot as determined by the Triple Spot Test per ASTM Specifications A792.
3.3.2 Panel material as specified shall be 24 gauge steel-coated both sides with a layer of aluminum-zinc alloy (approximately 55% aluminum, 45% zinc) applied by a continuous hot-dip method. Triple spot minimum 0.55 ounce per square foot as determined by the Triple Spot Test per ASTM Specification A792.