Specifications – Iron City Structures

Corporate Imperative: All materials used in the process and provided as a result of the manufacturing actions shall be new, manufactured within the parameters of corporate policies and procedures, and free from defects in material or workmanship when packaged and loaded for delivery.

Scope:

This specification applies only to Company supplied building materials including framing and bracing, wall and roof covering, connectors and fasteners required for attaching various parts to each other.

The following is a list of materials used in fabrication of the Company’s pre-engineered steel buildings:

Roof Panels: (26 & 24 ga)

Bare Galvalume: ASTM A792, SS Grade 80, AZ 55 Aluminum-Zinc alloy

Painted: ASTM A792, SS Grade 80, AZ 55; Aluminum-Zinc alloy

Wall Panels: (26 & 24ga)

Bare Galvalume: ASTM A792, SS Grade 80, AZ 55 Aluminum-Zinc alloy

Painted: ASTM A792, SS Grade 80, AZ 55; Aluminum-Zinc alloy

Liner Panels: (29 ga)

Painted Galvalume: ASTM A792 SS Grade 80, AZ 50; Aluminum-Zinc alloy coated

Natural Galvalume: ASTM A792 SS Grade 80, AZ 50; Aluminum-Zinc alloy coated

Cold-Formed: (purlins, girts, and eave struts)

ASTM A653 SS/HSLAS CLASS1 Grade 55 G40 Galvanized

(All above conform to ASTM A924)

Built Up Sections:

Plate: ASTM A529 Grade 55 or ASTM A572 HSLA Type 1 or Type 2 Grade 55

Sheet: ASTM A1011 SS Grade 55 or ASTM A1011 HSLA, Class 1 or 2 Grade 55 or ASTM A1018 HSLAS Grade 55

Bar: ASTM A529 SS Grade 55 or ASTM A572 HSLA Grade 55

Hot-Rolled Sections:

ASTM A36, Grade 36 (Channels)

ASTM A992, Grade 50 (Wide Flange Shapes)

Structural (Round) Tube:

ASTM A500 B (Fy=42 ksi)

Structural (Square, Rectangular) Tube:

ASTM A500 B (Fy=46 ksi)

Bolts, Nuts, and Washers:

Bolts: ASTM A325, Type 1 heavy hex bolt with heavy hex nut, ASTM A563 Grade C

ASTM A307, Grade A hex bolt with hex nut, ASTM 563, Grade A

Washer: ASTM F436 Type 1 (if required)

(All the above items are plain finish)

Fasteners:

All self-drilling and self-tapping sheet metal screws will conform to the following:

#12-14 x 1 .” Tek 2 or 3 self-drill screw conforms to SAE J78 with sealing washer

#12-14 x 1 .” Tek 2 or 3 self-drill conforms to SAE J78 with sealing washer

#12-24 x 1 .” #5 Tek 5 self-drill screw conforms to SAE J78 with sealing washer

#12-14 x .” Type A or AB conforms to ANSI standard B18.64 with sealing washer

#17 x 1” Type AB tapping screw conforms to ANSI standard B18.6.4 with sealing

washer #10 x 1 .” wood grip screw with sealing washer

Bracing:

Cable:
EHS (extra high strength) 7-wire Class A

galvanized steel strand conforming to ASTM A475

Hillside Washer:

ASTM A48, Class 30 A

Eyebolts:

ASTM A36 Hot Rolled rod Zinc coated

ASTM B633 turned and welded with ASTM

A563 Grade A nut

Washer:

ASTM F844

Rod:

ASTM A36 Fy=36 ksi

ASTM A529 Grade 50 (Fu = 70 ksi)

ASTM A572 Grade 50

Angles:

ASTM A36 Fy=36 ksi

Welding Supplies:

Filler Metal:

EM13K Lincoln Weld L-50 (1/16)

Flux:

F7A2 Lincoln Weld 960

Filler Metal:

ER70S-6 Lincoln Weld L-56 (0.045)

Shielding Gas:

90% Ar / 10% CO2

Primer Paint:

Water based Gray alkyd enamel that dries quickly and meets the performance specifications of FS TTP-664C

Products

Iron City Structures (ICS) engineers and provides a metal building system, which consists of a wide variety of steel structural framing members and steel roof and wall covering panels to be assembled into a building enclosure. These building components consist of Primary Frames, Secondary Roof and Wall Structural Members, Wind and Seismic Bracing, Roof and Wall Panels, Trim, and various accessory members to produce such building features as framed door openings, facades, canopies, doors, windows, and insulation.

These buildings are used for a variety of non-residential end-uses, with the most popular uses in single-story industrial and commercial applications, as well as industrial buildings with cranes and mezzanines. Warehouses, heavy and light manufacturing facilities, shopping centers, aircraft hangars, and churches, are typical of buildings provided by ICS. These buildings are custom designed and manufactured for each application, resulting in an economical, accurate, and structurally efficient solution for the building owner.

The building components that are included in buildings provided by ICS are each designed for the specific building geometry and prevailing building code requirements and regional environmental loading conditions. These building components are manufactured under rigid factory quality controls and shipped to the jobsite for accurate assembly and erection using bolts and fasteners.

DESIGN CRITERIA

ICS utilizes those standards, specifications and/or interpretations and recommendations of professionally recognized agencies and groups, such as AISC, AWS, ASTM, AISI, MBMA, etc., as the basis in establishing its own design, fabrication and quality criteria, standards, practices, methods and tolerances.

The design loads are as specified by the customer and shall be clearly set forth in the proposal and contract documents. The design loads include material dead weight, roof live loads, wind loads, seismic loads, auxiliary loads, collateral loads, as specified. Other loads due to mezzanines, cranes, mechanical equipment supported by the roof members, etc., are applied to the structural components, as specified. Other design considerations, such as the permissible vertical and horizontal deflection of the structure under loads, are incorporated into the building design, per ICS standards, as specified by the customer.

PRIMARY FRAMING

Primary Frames are the main load-carrying structural steel components. They may be Clearspan Rigid Frames, Continuous Beam Frames, Post & Beam Frames or other types of framing furnished by ICS.

RIGID FRAME (RF Series) solid web framing consists of tapered or uniform depth rafters rigidly connected to tapered or uniform depth columns. The frame provides a clear span and is designed to support the loads of adjacent bay spacings, as specified.

CONTINUOUS BEAM FRAME (CB Series) solid web framing consists of tapered or uniform depth rafters rigidly connected to tapered or uniform depth columns. The frame utilizes interior columns and is designed to support the loads of adjacent bay spacings, as specified.

UNIBEAM FRAME (UB and UBL Series) solid web framing consists of a tapered beam supported by uniform depth columns. The frame is designed to support loads of adjacent bay spacings, as specified.

POST AND BEAM FRAME framing members are the primary load-carrying members at the endwalls of the building. These members consist of rake beams, endposts, cornerposts and/or full or partially loaded frames. They may be either welded built-up sections, cold-formed light gage shapes or hot-rolled shapes Full Frame endwall frames may be used in conjunction with endposts when future expansion is required. Half-Loaded Full Frame endwall frames may be used when no future expansion is required, but when endposts cannot be used.

Cold-formed light gage Post and Beam members are normally welded Back-to-Back Cees, 8” [200 mm.] in depth; and have a minimum yield strength of 55,000 psi [380 MPa].

SECONDARY FRAMING

Secondary Framing Members are the structural members which carry loads to the primary framing members. They consist of eave members, roof purlins, wind struts, wind bracing, wall girts and other miscellaneous structural framing and are either welded built-up sections, cold-formed light gage shapes, and/or hot-rolled shapes.

Purlins are typically Zee shaped; 8” [200 mm.] or 10” [250 mm.] in depth; and have a minimum yield strength of 55,000 psi [380 MPa]. Purlins are designed as simple span or continuous span for loads, as specified.

Girts are normally Zee or Cee shaped; 8 ” [216 mm.] or 10” [250 mm.] in depth, and have a minimum yield strength of 55,000 psi [380 MPa].
Girts are designed as simple span or continuous span for loads, as specified.

Wind and Seismic forces acting normal to the building sidewall are resisted by the rigid frame action of the primary frames. These forces acting on the building endwall are typically resisted by portal frames, portal braces, or diagonal bracing, in accordance with ICS Buildings standard design practices. The quantity, size and location of bracing is shown on drawings furnished by ICS. Wind bracing members include rods, angles, etc. and have minimum yield strengths, as required for design and material availability.

Primary Frame flange bracing is normally accomplished by steel angles attached from purlins and/or girts to the primary framing. The quantity, size and location of flange bracing are shown on the documents furnished by ICS. Bracing members have a minimum yield strength, as required for design and material availability.

Base angles are 2” x 4” x 0.059” [50 mm. x 75 mm. x 1.5mm.] steel angles having a minimum yield strength of 55,000 psi [580 MPa]. They are anchored to the floor slab or grade beam with power-driven fasteners or equivalent at a maximum spacing of 2’ [610 mm.] on center and not more than 6” [152 mm.] from the end of any angle member.

Door headers and jambs are normally Zee or Cee shaped, 8” [216 mm.] in depth and have a minimum yield strength of 55,000 psi [380 MPa].

Sag angles are bridging members between purlins and are generally angles having a minimum yield strength of 36,000 psi [250 MPa].

FABRICATION

Structural members are fabricated by methods of shearing, roll-forming, punching, welding, flame cutting, drilling, reaming, etc. in accordance with ICS standard practices.

Structural members of welded plate sections have the flanges and webs joined by a continuous automatic submerged arc welding process. Shop welding is performed by certified welders.

Shop connections typically are welded. Field connections normally are bolted using A325 or A307 bolts in punched, drilled, or reamed holes, in accordance with ICS standard practices.

Workmanship and fabrication tolerances are in accordance with ICS quality control standards.

Fabricated parts are identified, either individually or by lot or group, using an identification marking corresponding to the marking shown on the construction drawings. Markings are normally stamped, stenciled, tagged or lettered so as to remain visible after shop painting.

The size and weight of the building components, as packaged and shipped, will permit transportation by common transportation carrier methods, unless stipulated otherwise in the contract document.

SHOP PRIMER

All structural steel frame members are cleaned of oil, dirt, loose scale and foreign matter prior to receiving one shop coat of ICS standard primer paint, in accordance with ICS standard practices.

The purpose of ICS standard shop primer is to provide protection for the structural steel frame members during transportation, during temporary job site storage and during erection.

The ICS shop primer does not provide the uniformity of appearance or the durability and protection of appropriate field finish coat(s) of paint.

Shop primer paint is a rust inhibitive primer paint which meets or exceeds performance requirements of Federal Specification TTP 664c and is ICS light gray color. Primer paint has a gloss equal to 10 – 15 units, 60 degree gloss meter (Gardner).

BUILDING GEOMETRY

BUILDING WIDTH is measured from outside-to-outside of sidewall girts, and may be virtually any dimension, to a 1/16 inch [1.5 mm.] increment.

BUILDING LENGTH is measured from outside-to-outside of endwall-girts, and may be virtually any dimension, to a 1/16 inch [1.5 mm.] increment.

BUILDING LINE is defined as the outside face of secondary structural steel [girts].

BAY SPACING is measured from centerline-to-centerline of primary frames for interior bays and from centerline of the first interior frame to outside of endwall girts for end bays.

EAVE HEIGHT is the vertical dimension at the sidewall, measured from the floor to the intersection of the wall Building Line [the outside of the sidewall girts] and the Roof line [the outside of the roof purlins].

ROOF PITCH is expressed as a ratio of the vertical rise to the horizontal run. For example, a 1:12 [0.833:10] roof pitch has a vertical rise of 1” [25 mm.] for each 12” [305 mm.] horizontal run. Roof pitch limitations vary with frame type and/or roof covering.

BUILDING ERECTION

ICS pre-engineered building systems are to be erected in accordance with appropriate erection drawings, erection guides and/or other erection documents furnished by ICS. It is the responsibility of the erector to comply with all appropriate legal and safety requirements. It is the further responsibility of the erector to determine and provide any and all temporary bracing, shoring, blocking, bridging and/or securing of components, etc. as required during the erection process.

ROOF COVERING SYSTEMS

The Roof Covering Systems consist of the exterior roof panels, panel fasteners and clips, roof accessories, sealants, mastics, trim and flashing, as required.

Internally Manufactured ICS Roof Covering Systems are: the Panel Rib Roof System and the SSR Standing Seam Roof System. A variety of alternative architectural panels can be used in conjunction with the ICS product to provide optional exterior finishes and appearances.

The ICS Panel Rib Roof System provides 36” [915 mm.] wide net coverage and has 1 1/4” [30 mm.] high major ribs at 12” [305 mm.] on center with minor ribs spaced between the major ribs. Sidelaps are at least one full major rib. The roof underlying rib utilizes a supporting member-bearing edge. The roof overlapping rib utilizes an anti-capillary groove. All panels are continuous from eave to ridge except where the length exceeds 41’ [12,500 mm.] or otherwise becomes prohibitive for handling purposes, in which case, endlaps are provided. Endlaps are 4” [102 mm.] overlap and occur at a support member. Panel Rib Roof Panels are 26 gage as standard with 24 gage available and are one of the following: Galvalume steel, Galvanized steel G30 coating designation with or without SP20 or KXL pre-painted finishes.

Sealants, mastics and closures are manufacturer’s standards. They are provided at panel endlaps, sidelaps, rake, eave, transitions and accessories, as required, to provide a weather resistant roof system.

Exposed fasteners are self-drilling, stainless steel-capped with integral sealing washer. Color of fastener heads matches the roof panel finish, when specified. Location and quantities of fasteners are manufacturer’s standards based upon building design, weathertightness and/or finished appearances.

Optional roof accessories include: Panel Rib Tuf-Lite Translucent roof panels, APEX 20 round gravity ventilators, 9” [229 mm.] or 12” [305 mm.] sectional or continuous ridge vents, or Panel Rib curbs/flashing units.

SSR ROOF SYSTEM

The SSR Standing Seam Roof System consists of ICS Standing Seam Roof Panel and interconnecting panel-to secondary structural SSR clips, sealants, mastics, closures, trim and/or flashings necessary to provide weather tightness and finished appearance. Optional roof accessories and optional insulating systems are available, consisting of 3” [77 mm.], 4” [102 mm.] or 6” [177 mm.] of blanket insulations, with or without high density polystyrene thermal blocks or Superblock for additional over-the-purlin insulation or a maximum of 2 ½” [64 mm.] rigid board insulation. The ICS Standing Seam roof system may be used with all ICS Framing Systems and secondary structural members (including Transbay joists) with a minimum roof pitch of 1/4:12 [0.53:10].

SSR Standing Seam Roof Panels provide 24” [610 mm.] wide net coverage having 3” [77 mm.] high major ribs formed at the panel side laps. Side joints have factory-applied sealant and require field seaming of the side lap joint after the panel has been positioned on the roof. The seaming is accomplished with an electrically operated seaming machine available through ICS. All panels are continuous from eave to ridge except where the panel length exceeds 41’ [12,500 mm.] or otherwise becomes prohibitive for handling purposes in which case, panel endlaps are provided. Endlaps are 4” [102 mm.] overlap and are located near the supporting purlin member. SSR roof panels are 24 gage Galvalume steel as standard, with the following standard colors:

SSR Panel-to-roof purlin structural attachments are made with SSR clips. SSR clips are provided with movable tabs which interlock with the seamed SSR panel ribs and provide for at least 1 5/8” [41 mm.] of panel movement in either direction from center of clips to compensate for thermal effects.

Exposed fasteners are self-drilling, stainless steel-capped with integral sealing washer. Color of fastener heads match the roof panel finish when specified. Concealed fasteners are self-drilling with the type and size as required by roof secondary structural members. Location and quantities of fasteners are manufacturer’s standards based upon building design, weathertightness, and/or finished appearance.

Optional Roof Accessories include: SSR Tuf-Lite Translucent roof panels, APEX 20” 508 mm.] round gravity ventilators, 9” [229 mm.] or 12” [305 mm.] sectional or continuous ridge vents, SSR curb/flashing units, DekTites, Pipe Supports, Uplift Straps, and Walkways.

PROPOSED SSR RIDGE

The proposed (to be introduced) SSR Ridge assembly consists of draw-formed Aluminum seam caps, factory-attached to SSR ridge panels that are seamed together along the center of the ridge. The SSR ridge panels are installed perpendicular to the SSR panels with the seam caps attached to the SSR panel high ribs. The finished ridge assembly has only one weathersealed joint and provides a true expansion joint for SSR panel movements.

The SSR ridge cap concept is used at all high ends of slope flashing conditions, i.e., high eave of single slope buildings, stepped roofs and ridge accessories.

PANEL RIB WALL COVERING SYSTEM

The Panel Rib Wall Covering System consists of the exterior wall panels, panel attachments, wall accessories, sealants, mastics, trim and flashing as required.

The Panel Rib Wall System provides 36” [915 mm.] wide net coverage and has 1 3/16” [30 mm.] high major ribs at 12” [305 mm.] on center with minor ribs spaced between the major ribs. Sidelaps are at least one full major rib. All wall panels are continuous from floor to eave, except where the length exceeds 41’ [12,500 mm.] or otherwise becomes prohibitive for handling purposes, in which case, endlaps are provided. Endlaps are 4” [102 mm.] overlap and occur at a support member. Panel Rib Wall Panels are 26 gage as standard with 24 gage available and are one of the following: Galvalume steel, Galvanized steel G60 coating designation with or without SP20 or KXL pre-painted finishes

Panel Rib Wall Systems consist of ICS Panel Rib wall panels and attachments to secondary structural members, sealants, mastics, closures and trim and/or flashings necessary to provide weather-tightness and/or finished appearance. Optional wall accessories and optional insulating systems consisting of 2” [51 mm.], 3” [77 mm.] or 4” [102 mm.] of blanket insulation or up to 2 ½” [64 mm.] of rigid board insulation are available. Panel Rib wall systems may be used with all ICS roof panel systems.

The sidewall panel may be crimped at the base and/or notched at the eave to match the roof sheeting configuration. Optional wall accessories include: translucent wall panels, service doors, fixed or operable wall louvers, windows and framed openings.

COATINGS AND FINISHES

Roof and Wall panel coatings and/or finishes are normally one of the following:

GALVALUME is an Aluminum-Zinc alloy coating per ASTM A792 over steel substrate. ICS uses AZ55 for Bare Galvalume applications. Nominal Coating weight is 0.55 Oz./sft of coated steel both sides equivalent to an approximate thickness of 0.00176 inch (0.045mm)

ICS uses AZ50 for painted Galvalume. Nominal Coating weight is 0.50 Oz/sft of coated steel both sides equivalent to an approximate thickness of 0.00176 inch (0.045mm)

Standard SP20 finishes consist of a 1 mil. [0.025 mm.] baked Silicone Polyester exterior surface, on AZ50 Galvalume steel. The interior surface is coated with an off-white 0.5 mil. [0.013 mm.] wash coat. SP20 finishes are available in a range of standard colors:

Optional KXL finishes consist of a 1 mil. [0.025 mm.] Kynar-based coating applied to the exterior of AZ50 Galvalume steel. The interior surface is coated with an off-white 0.5 mil. [0.013 mm.] wash coat. KXL is available in the following colors a range of standard colors.