How do you build a 2 hour rated wall?
Double the number of Type X sheets on the wall for a simple system installed over fire-resistant fiberglass insulation; each sheet of 5/8-inch Type X drywall is rated to resist fire for one hour, so two layers will produce a two-hour firewall. Put two sheets together on one side or use one sheet on each side of a wall.
Is a shaft wall fire rated?
USG Shaft Wall Systems provide superior safety and performance for an important building component. Systems provide up to four-hour fire resistance and sound ratings up to 52 Sound Transmission Class (STC), and resist both sustained and intermittent lateral loads and fatigue under cyclic lateral loading.
How thick is a shaft wall?
The system is designed to use with 1” gypsum board. MBA’s shaftwall is available in 2-1/2”, 4”, or 6” sizes. Shaftwall is available in 18 and 33 mil thicknesses (25-20ga.).
How many layers of drywall do I need for a 2 hour rating?
two layers
As 2 hours of fire protection has become the standard for fire safety in America, it has become somewhat of a standard practice to include two layers of type X drywall within a building’s perimeter in order to achieve this required level of fire safety.
Can you stack shaft wall?
Is it permitted to stack 1” shaftliner panels in a cavity shaft system? Yes, when the height of the assembly exceeds the length of a liner panel, then one liner panel is stacked on top of the other. No joint treatment or blocking is required at the horizontal panel butt joint.
How much does shaft wall cost?
Installing an average wall costs about $1,800 total, including drywall and any electrical or plumbing. Framing a typical 10-foot wall, you’ll spend about $50 to $75 in materials….Average Metal Stud Installation Material & Labor.
| Type | Cost | Per Linear Foot* |
|---|---|---|
| Studs | $1 – $6 per square foot | $0.50 – $1.50 |
How thick are elevator shaft walls?
Gypsum Shaftliner Panels are produced 1” (25.4 mm) thick by 24” (610 mm) wide and 8′ (2440 mm) to 12′ (3660 mm) in length. The applicable product manufacturing standard is ASTM C1396 and ASTM C1658.
How much does shaft wall weight?
These shaftwalls are lightweight, install faster, and provide lower inplace costs. They also significantly reduce structural framing and foundation costs. Masonry shaftwalls in high-rise buildings historically weigh between 20 and 45 lbs. per square foot compared to gypsum assemblies that weigh between 10 and 13 lbs.
What is a 2 hour rated wall?
2. Gypsum Board: Two (2) hour rated walls have two (2) layers of 5/8″ Type ‘X’ gypsum wallboard panels on each side of the steel studs. The “Fire Tape” product would be used as an alternative to conventional joint tape in specific systems when: 3.
Why do you need a CGC shaft wall system?
Use CGC Shaft Wall Systems to construct elevator shafts, mechanical shafts, stairwells, air return shafts and horizontal membranes. These shafts are vital for vertical communication, power, water, fresh air, exhaust and a means of egress.
How big is a USG cavity shaft wall?
USG Cavity Shaft Walls provide UL tested 1- to 4-hour fire resistance. What sizes are available for USG C-H Stud? 2 1/2″, 4″ and 6″ 25, 22 and 20 gauge. Please contact your local USG Representative for pricing and availability. Can the Horizontal Shaft Wall carry live loads? No. The ceiling is designed to carry only its own weight.
What are the components of a cavity shaft wall?
The Cavity Shaft Wall System includes components that provide the strength to withstand lateral loads and fire protection necessary for walls that enclose elevator shafts, stairwells and other vertical shafts. The system includes gypsum liner panels, gypsum panels and cement board, interior finishing products and framing components.
When do you need a solid shaft wall?
Solid shafts are normally used to construct mechanical or duct enclosures, or in areas where a small section of shaft wall is needed for a single vertical pipe penetration. See page 21 for more information. For certain applications, equipment limitations sometimes make it diicult to install shaft liner panels and studs vertically.