GSO ASTM C840:2024

ASTM C840:23
Gulf Standard   Current Edition · Approved on 25 April 2024

Standard Specification for Application and Finishing of Gypsum Board

GSO ASTM C840:2024 Files

GSO ASTM C840:2024 Scope

This specification covers requirements for the methods of application and finishing of gypsum board. Construction details for a specific assembly to achieve the required fire resistance shall be obtained from reports of fire-resistance tests, engineering evaluations, or listings from recognized fire testing laboratories. Gypsum board assembly shall conform to acoustical tests of the specification where sound control is required. Moreover, gypsum assembly shall conform to framing size, fasteners spacing, ventilation, substrate, surface preparation, cutting, and installation application as indicated in the specification. Materials categorized under this specification include: gypsum boards, gypsum wallboards, gypsum backing board and coreboard, water-resistant gypsum backing board, exterior gypsum soffit board, and gypsum ceiling board. Finishing materials include: compounds, joint tape, fasteners, nails, screws, and staples. A fire test of assemblies shall be conducted to determine a fire resistance rating required for gypsum board assembly. Gypsum board shall be cut by scoring and breaking or by sawing, working from the face side. Masonry or concrete walls shall be dry, free of dust, oil, or form release agents, protrusions or voids, or foreign matter that inhibit bond for adhesively applied gypsum board. All materials shall be kept dry. Where gypsum board is stored outside, it shall be off the ground, properly supported on a level platform and fully protected from the weather or direct sunlight exposure.

Best Sellers From Construction and Building Sector

GSO 1427:2008
 
Gulf Standard
Ceramic Sanitary Appliances - Western Water Closets
GSO 1431:2002
 
Gulf Technical Regulation
Sanitary appliances - pressurized flushing devices
OS GSO 1431:2002
GSO 1431:2002 
Omani Standard
Sanitary appliances - pressurized flushing devices
OS GSO 1427:2008
GSO 1427:2008 
Omani Standard
Ceramic Sanitary Appliances - Western Water Closets

Recently Published from Construction and Building Sector

GSO ISO 679:2026
ISO 679:2009 
Gulf Standard
Cement — Test methods — Determination of strength
GSO ISO 50002-2:2026
ISO 50002-2:2025 
Gulf Standard
Energy audits — Part 2: Guidance for conducting an energy audit using ISO 50002-1 in buildings
GSO ASTM C1170/C1170M:2026
ASTM C1170/C1170M:20 
Gulf Standard
Standard Test Method for Determining Consistency and Density of Roller-Compacted Concrete Using a Vibrating Table
GSO ISO 13824:2026
ISO 13824:2020 
Gulf Standard
Bases for design of structures — General principles on risk assessment of systems involving structures