INTERCHAR 212 PDF

Submit under provisions of Section Fire Test Evidence: Submit published third party design listings for fire resistance ratings and product thickness. Include evidence that the fire testing was sponsored by the manufacturer and that the material tested was produced at the manufacturers facility under the supervision of third party certification personnel. Shop Drawings: Submit plan, section, elevation and perspective drawings as necessary to depict system configuration, design considerations and application procedures. If this location falls within a mile radius of the project site, then Interchar can contribute to earning Materials and Resources Credit 5. Delete the next paragraph if not applicable.

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All surfaces to receive intumescent fireproofing material must be clean, dry and free of oil, grease, loose mill scale, dirt, dust or other foreign substances which would impair bond of the intumescent fireproofing material to the substrate.

Where necessary, cleaning or other corrections of the surfaces to receive the intumescent fireproofing are the responsibility of the installer of the incompatible substrate. Do not commence application of the intumescent fireproofing until the contractor, applicator and inspector have examined the surfaces to receive the intumescent fireproofing and determined the surfaces are acceptable to receive the intumescent fireproofing material.

Commencement of application is acceptance of substrate. Verify that substrate and workspace temperature and humidity conditions are in accordance with requirements of this section. Verify that all clip hangers, piping, ducts, equipment or other items which would interfere with the application of fireproofing are not positioned or installed until fireproofing application is complete.

Provide masking, drop cloths or other suitable coverings to prevent overspray onto surfaces not intended to be affected by Work in this section. Clean substrate free of dust, dirt, grease or other foreign substances that would impair with the bond of the intumescent fireproofing material.

Grind smooth all weld spatter and defects prior to commencement of fireproofing application. Apply fireproofing material at the required dry film thickness in accordance with the appropriate UL design listing. Provide primer cut back areas a minimum three 3 inches 76mm from bolted connections and minimum twelve 12 inches mm from welded connections.

Primer applied at the steel fabricators shop must be in accordance with the provisions of Section Apply intumescent fireproofing material at maximum mils wet film thickness WFT per coat. Subsequent coats are applied until final dry film thickness DFT is achieved for required fire resistance rating.

Final DFT is measured with a dry film thickness gauge. Final texture and finish of the intumescent fireproofing surface must be completed prior to the application of the decorative top coat and in accordance with International Paint Interchar Finish Standards.

Final color, gloss and finish will be determined and approved by the Architect. The intumescent fireproofing material inspection must be performed prior to the application of the decorative top coat. All test results must be made available to all parties at the completion of each pre-designated area and approved prior to the application of top-coat. In-place intumescent fireproofing not in compliance with the specification requirements must be corrected prior to the application of the decorative top coat.

Prior to mixing Part A and B during the application of the intumescent fireproofing material, random pre-determined liquid samples of Part A and Part B must be submitted for material characterization fingerprinting in accordance with the procedures detailed in the ISO Standard.

Sample frequency will be pre-determined by the architect and testing performed by an independent testing laboratory or the intumescent coating manufacturer. Upon completion of installation, all excess material, overspray and debris must be cleared and removed from the job site. Remove intumescent fireproofing materials from surfaces not required to be fireproofed. All patching and repair to intumescent fireproofing material, due to damage by other trades, will be performed under this section and paid for by the trade responsible for the damage.

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Indeed, it was only when steel-framed construction had been mastered that the first skyscrapers were possible, and structural steel remains a popular choice in construction. But the use of structural steel does present a challenge: in a raging fire, steel can lose its strength, resulting a catastrophic failure, with the very real risk of serious damage and loss of life. One way to control that risk is with special coatings called intumescent coatings. These paints react in the presence of intense heat to form an insulating layer that can extend structural integrity for up to 4 hours. Most traditional methods of fireproofing are aesthetically unappealing and labor intensive to apply.

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