সরাসরি প্রধান সামগ্রীতে চলে যান

WHAT IS FIRE RATED GYPSUM DRYWALL?


Gypsum is approximately 21 percent by weight chemically combined water which greatly contributes to its effectiveness as a fire resistive barrier. When gypsum drywall is exposed to fire, the water is slowly released as steam, effectively retarding heat transmission.
Fire rated gypsum drywall is more fire resistant because it contains glass fiber reinforcement and other additives within its specially formulated gypsum core to help it hold up longer to a fire exposure.
Fire rated drywall is referred to as “Type X” and must be third-party certified by an independent testing and listing agency such as UL (Underwriters Laboratories Inc.) and ULC (Underwriters’ Laboratories of Canada) to meet the fire performance requirements prescribed in the ASTM C1396 (CAN/CSA-A82.27) Standard Specification for Gypsum Board.
Types of Fire Rated Gypsum:
Type X fire rated gypsum drywall that is 5/8 -inch (15.9mm) thick and installed on each side of nominal 2-inch x 4-inch (38x89mm) wood studs spaced 16-inch (400mm) o.c. or 3-5/8 inch (610 mm) steel studs spaced 24” o.c. has a minimum fire rating for the assembly of 1 hour, which is a typical requirement for many building codes.
Type C fire rated drywall (sometimes referred to as Improved Type X) is similar in composition to Type X, except that it has more glass fiber reinforcement and other ingredients in the gypsum core that makes its fire resistive properties superior to Type X. Type C gypsum board is available in 1/2-inch (12.7 mm) and 5/8-inch (15.9mm) thicknesses.
Fire rated Type X Shaftliner is 1” (25.4 mm) thick and used in special Shaftwall and Area Separation Firewall assemblies.
In residential homes, installation of fire rated drywall is often required by state/province and local building codes on interior and exterior walls near furnaces and utility rooms. Fire rated drywall can also be installed in a basement or other places where a wood stove might be used. Fire rated drywall is typically found on attached garage walls and ceilings that are adjacent to the main living area of the home.
For commercial buildings, fire rated gypsum drywall is specified for most of the building walls and ceilings to meet building code requirements for fire partitions and assemblies. These fire rated partitions and assemblies provide life safety for the buildings occupants.

মন্তব্যসমূহ

একটি মন্তব্য পোস্ট করুন

এই ব্লগটি থেকে জনপ্রিয় পোস্টগুলি

Pipe Schedule Method for Firefighting Sprinkler System

Pipe Schedule Method for Firefighting Sprinkler System                                     Pipe Schedule Method for Firefighting Sprinkler System  The water demand for firefighting sprinkler systems shall be determined by either the pipe schedule method or the hydraulic calculation method, in this article we will discuss the pipe schedule method. What is pipe schedule system?! According to NFPA 13, Pipe Schedule System is defined as sprinkler system in which the pipe sizing is selected from a schedule that is determined by the occupancy classification and in which a given number of sprinklers are allowed to be supplied from specific sizes of pipe. Where can we use pipe schedule method?! New systems of 465 m2 or less. Additions or modifications to existing pipe schedule systems. Classification of occupancies according to hazard NFPA 13 classifies the occupa...
১টি মন্তব্য
আরও পড়ুন

Fire Fighting Systems and Equipment in Buildings

General Fire Fighting Equipment Fire fighting systems and equipment vary depending on the age, size, use and type of building construction. A building may contain some or all of the following features: fire extinguishers fire hose reels fire hydrant systems automatic sprinkler systems. Fire extinguishers Fire extinguishers are provided for a 'first attack' fire fighting measure, generally undertaken by the occupants of the building before the fire service arrives. It is important that occupants are familiar with which extinguisher type to use on which fire. Most fires start as a small fire and may be extinguished if the correct type and amount of extinguishing agent is applied whilst the fire is small and controllable. The principle fire extinguisher types currently available include: Extinguishing Agent     Principle Use Water wood and paper fires - not electrical Foam flammable liquid fires - not electrical Carbon dioxide electrical fir...
১টি মন্তব্য
আরও পড়ুন