Smoke exhaust ductwork

Smoke exhaust ductwork

Smoke Exhaust Ductwork is typically protected via passive fire protection means, subject to fire testing and listing and approval use and compliance. It is used to remove smoke from buildings, ships or offshore structures to enable emergency evacuation as well as improved firefighting.

Means of construction

Similar to pressurisation ductwork, smoke exhaust can be made of

*1. ordinary sheet metal and then receive external fireproofing treatment, or
*2. a proprietary duct that is inherently fire-resistant, or
*3. one may make the duct out of suitably stiff fireproofing materials, such as calcium silicate

The primary difference between pressurisation and smoke exhaust ducting is that one pressurises and area, while the other reduces the pressure through exhausting smoke.

Some smoke exhaust ductwork requires no fireproofing if the smoke is not expected to be at elevated temperature.

Markets

Smoke exhaust ducting systems are in land-based use in most industrialised nations of the world. In North America, the primary use is used to comply with building codes. Grease ducting is closely related and highly regulated in North America as well, except that the purpose is different, being the exhaust of grease laden vapours from commercial cooking operations, as opposed to smoke exhaust from accidental building fires.

Requirements

Full scale fire testing must include 3-dimensional exposures to ductwork as well as the firestop system. Installations must meet the listing.

Trade Jurisdiction

In the case of exterior treatments on top of ordinary ductwork, as well as ducting made of fireproofing boards, the most suitable and most often used trade is the [http://www.insulators.org/ insulation trade] . In the case of proprietary systems with inherent ratings, the sheet metal trade is responsible for the work. Most often the work is tendered and executed by contractors with significant passive fire protection experience.

ee also

*Passive fire protection
*Pressurisation ductwork
*Grease duct
*Calcium Silicate
*Fireproofing
*Firestop
*FM Global
*HVAC
*Listing and approval use and compliance
*Smoke
*Fire
*Emergency evacuation

External links

* [http://www.fmglobal.com/assets/pdf/fmapprovals/4922.pdf]
* [http://www.ul.com/hvacr/heating/categories.html ULI list of subject related standards]
* [http://www.ais-online.de/6/pdcnewsitem/00/35/19/index_6.html Rad- und Schwimmsporthalle Berlin]


Wikimedia Foundation. 2010.

Игры ⚽ Поможем написать курсовую

Look at other dictionaries:

  • Pressurisation ductwork — is a fire protection system. It is used to supply a steady stream of fresh air to any area of refuge or designated emergency evacuation or egress route.Purpose* To ensure a positive pressure environment of clean outside air, free from smoke to… …   Wikipedia

  • Heat and smoke vent — Heat and Smoke Vents are installed in buildings as an active fire protection measure. They are openings in the roof which are intended to vent the heat and smoke developed by a fire inside the building by the action of buoyancy, such that they… …   Wikipedia

  • HVAC — may also stand for High voltage alternating current. See also: Glossary of HVAC HVAC systems use ventilation air ducts installed throughout a building that supply conditioned air to a room through rectangular or round outlet vents, called… …   Wikipedia

  • Area of refuge — An Area of refuge is a location in a building designed to hold occupants during a fire or other emergency, when evacuation may not be safe or possible. Occupants can wait there until rescued by firefighters. This can apply to the following:*any… …   Wikipedia

  • Passive fire protection — (PFP) is an integral component of the three components of structural fire protection and fire safety in a building. PFP attempts to contain fires or slow the spread, through use of fire resistant walls, floors, and doors (amongst other examples) …   Wikipedia

  • Grease duct — A grease duct is a purpose designed duct that is used to vent grease laden vapours from commercial cooking equipment such as a stove, double decker pizza oven, deep fryer or wok to the outside of a building or mobile food preparation trailer.… …   Wikipedia

  • Duct (HVAC) — A round galvanized steel duct connecting to a typical diffuser Fire resistance rated …   Wikipedia

  • building construction — Techniques and industry involved in the assembly and erection of structures. Early humans built primarily for shelter, using simple methods. Building materials came from the land, and fabrication was dictated by the limits of the materials and… …   Universalium

  • Furnace — For other uses, see Furnace (disambiguation). Industrial Furnace from 1907 A furnace is a device used for heating. The name derives from Latin fornax, oven. In American English and Canadian English, the term furnace on its own is generally used… …   Wikipedia

  • Dust collector — Two rooftop dust collectors in Pristina, Kosovo A dust collector is a system used to enhance the quality of air released from industrial and commercial processes by collecting dust and other impurities from air or gas. Designed to handle heavy… …   Wikipedia

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”