Our various fire rated assemblies meet the demand for passive fire protection in modern construction, offering up to 4 hour protection from fire. We also provide a line of fire rated doors and wall penetrations. DuraSteel heavy duty fire and impact resistant walls and ceilings offer fire and impact protection while also providing outstanding noise reduction. Passive fire protection plays a vital role in modern construction.
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Mechanical duct -floor penetration | NFPA Xchange
Buildings and structures erected or to be erected, altered or extended in height or area shall be classified in one of the five construction types defined in Sections The building elements shall have a fire-resistance rating not less than that specified in Table and exterior walls shall have a fire-resistance rating not less than that specified in Table Where required to have a fire-resistance rating by Table , building elements shall comply with the applicable provisions of Section The protection of openings, ducts and air transfer openings in building elements shall not be required unless required by other provisions of this code. Exception: Noncombustible structural members supporting solar photovoltaic panels are not required to meet the fire resistance rating for the following:. Solar photovoltaic panels supported by a structure over parking stalls where the panels constitute the roof and all the following conditions are met see Figure :.
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This ceiling option features a unique torsion-spring-equipped suspension that is concealed above the panel system. The panels fasten to the concealed suspension, and butt together to project a smooth, monolithic appearance that is both dramatic to look at and easy to install. Yet they are easily removable for fast ceiling access after Aluma-Vault is installed. System can be designed with a wide variety of panel options - perforation patterns ; non-perforated border edges; and custom paint color options. Installation ease is enhanced because fewer components are necessary, and some components are factory installed.
Architectural precast concrete has been used since the early twentieth century and came into wide use in the s. The exterior surface of precast concrete can vary from an exposed aggregate finish that is highly ornamental to a form face finish that is similar to cast-in-place. Some precast panels act as column covers while others extend over several floors in height and incorporate window openings. In most cases, the architect selects the cladding material for appearance, provides details for weatherproofing, and specifies performance criteria.