Astm e761 pdf free download

Download Pdf. Moisture resistant - Provides excellent resistance to high humidity and condensation. Applicator friendly - Low pumping pressures allow use of small diameter hoses for increased maneuverability and greater pumping distances.

Non-toxic - The factory-mixed blend of common Portland cement and inert materials require only the addition of water for mixing and application. Delivery and Storage All material to be used for fireproofing shall be delivered in original unopened packages bearing the name of the manufacturer, the brand and proper Underwriters Laboratories Inc. The material shall be kept dry until ready for use. Packages of material shall be kept off the ground, under cover and away from sweating walls and other damp surfaces.

All bags that have been exposed to water before use shall be discarded. Stock of material is to be rotated and used before its expiration date. The steel to be fireproofed shall be free of oil, grease, excess rolling compounds or lubricants, loose mill scale, excess rust, non-compatible primer, lock down agent or any other substance that will impair proper adhesion.

Where necessary, the cleaning of steel surfaces to receive fireproofing shall be the responsibility of the general contractor. No fireproofing shall be applied prior to completion of concrete work on steel decking. Fireproofing to the underside of roof deck assemblies shall be done only after roofing application is complete and roof traffic has ceased.

The mixer shall be kept clean and free of all previously mixed material. Using a suitable metering device and a conventional mixer, all water shall be first added to the mixer as the blades turn. Mixing shall continue until the mix is lump-free, with a creamy texture. All material is to be thoroughly wet. If the first pass can be applied at a thickness sufficient to obtain the required rating a second pass will not be required. Where the full required thickness can not be applied in a single pass, subsequent passes can be applied only after the first coat has set.

A spray gun, with a properly sized orifice and spray shield and air pressure at the nozzle of approximately 20 psi 0. Provisions shall be made for ventilation to properly dry the fire proofing after application. Packages of material shall be kept off the ground, under cover and away from sweating walls and other damp surfaces. All bags that have been exposed to water before use shall be discarded.

Stock of material is to be rotated and used before its expiration date. The steel shall be free of oil, grease, rolling compounds or lubricants, loose mill scale, excess rust, noncompatible primer, lock down agent or any other substance that will impair proper adhesion.

Where necessary, the cleaning of steel surfaces to receive fireproofing shall be the responsibility of the general contractor. Many Fire Resistance Designs allow the use of painted metal floor or roof-deck in place of galvanized decking. Painted decking must be UL listed in the specific fire resistance designs and must carry the UL classification marking. Consult your local GCP sales representative for details.

Fireproofing to the underside of roof deck assemblies shall be done only after roofing application is complete and roof traffic has ceased. No fireproofing shall be applied prior to completion of concrete work on steel decking. Other trades shall not install ducts, piping, equipment, or other suspended items until the fireproofing is completed and inspected.

Other trades shall install clips, hangers, support sleeves, and other attachments that penetrate the fireproofing, prior to application of the fireproofing. The mixer shall be kept clean and free of all previously mixed material. Using a suitable metering device and a conventional mixer, all water shall be first added to the mixer as the blades turn.

Mixing shall continue until the mix is lump-free, with a creamy texture. All material is to be thoroughly wet. A spray gun, with a properly sized orifice and spray shield and air pressure at the nozzle of approximately 20 psi 38 KPa , will provide the correct hangability, density and appearance. Provisions shall be made for ventilation to properly dry the fireproofing after application.

In enclosed areas lacking natural ventilation, air circulation and ventilation must be provided to achieve a minimum total fresh air exchange rate of 4 times per hour until the material is substantially dry. Field Tests The architect will select an independent testing laboratory for which the owner will pay to sample and verify the thickness and density of the fireproofing in accordance with the the applicable building code.

The architect will select an independent testing laboratory for which the owner will pay to randomly sample and verify the bond strength of the fireproofing in accordance with the provisions of ASTM E