When there is a fire, you may have seen firefighters breaking windows and cutting big holes in the roof. What they are doing is called ventilation. Ventilation allows smoke and superheated gasses to escape from the building. This prevents two dangerous conditions known as flashover and backdraft that could potentially kill firefighters or any other people still inside the building.

a fire burns, it moves upward and outward. Breaking the windows and/or cutting holes in the roof (called ventilation) stops the damaging outward movement and enables firefighters to fight the fire more efficiently, actually resulting in less damage to the structure and its contents.

This is called "venting the roof." There are two basic reasons for this practice. Dangerous gasses and dark smoke accumulate in a burning building. It is impossible for firefighters to see in this environment. When a hole is made in the roof, the smoke and gases escape. Venting the roof makes it easier for firefighters to see and find the source of the fire, and it also reduces the possibilities of backdraft and flashover.

This is called "venting the roof." There are two basic reasons for this practice. Dangerous gases and dark smoke accumulate in a burning building. Unlike the movie versions of fires, it is impossible for firefighters to see in such an environment. When a hole is made in the roof because the building is "vented," the smoke and gases escape because heat and smoke rise. It makes it much easier for the firefighters in the building to see.

This is called "venting the roof." There are two basic reasons for this practice. Dangerous superheated gases and dark smoke accumulate in a burning building. Unlike the movie versions of fires, it is impossible for firefighters to see in such an environment or for victims to survive. When a hole is made in the roof, and the building is "vented," the smoke and gases escape because heat and smoke rise.

A fire moves in all directions as it builds in intensity. Hot, explosive smoke and gasses are produced that could explode or spread the fire quickly. "Controlled" breaking of the windows and cutting holes in the roof by firefighters--known as "ventilation"--decreases those possibilities. It may not look like it, but it is a safer way of fire fighting and causes a lot less damage in the long run.

Fire in a building creates a tremendous amount of heat and smoke. In many instances, firefighters must remove this heat and smoke before they can get close enough to extinguish the fire. Heat and smoke rise, so cutting a hole in the roof and breaking out windows in strategic locations allows the smoke to vent upwards, allowing cool air to enter the structure from below.

When there is a fire, you may have seen firefighters breaking windows and cutting big holes in the roof. What they are doing is called ventilation. Ventilation allows smoke and superheated gasses to escape from the building. This prevents two dangerous conditions known as flashover and backdraft that could potentially kill firefighters or any other people still inside the building.

Safety comes first; we need to break your windows because it will allow the super heated gases caused bt the fire to escape while letting cooling air in. Therefore, we can reduce damage to the building and provide relief to the people that may be trapped inside. One must always remember that there is a threat to letting more oxygen in to the fire. If you open up a door and are not prepared to apply water to the fire, a smoke explosion or backdraft can occur.

Ventilation holes are sometimes cut to release the hot gases from inside the structure. A build-up of fire gases is dangerous to fire fighters because it can suddenly burst into flames in an event known as a flashover. Flashovers kill fire fighters every year and the best way to avoid it is to cut the ventilation holes.

When there is a fire in a closed structure, the fire and smoke build up and move upward until it cannot go up any farther. Smoke travels upward until something stops it like a ceiling or a roof. At this time, the smoke mushrooms outward filling the structure. If the firefighters punch a hole in the roof, the smoke is able to escape. If there are victims inside, this could better enable them to breath and be more easily located by the firefighters.

This is called "venting the roof." There are two basic reasons for this practice. Dangerous gases and dark smoke accumulate in a burning building. Unlike the movie version of fires, it is impossible for firefighters to see in such an environment. When a hole is made in the roof because the building is "vented," the smoke and gases escape because heat and smoke rise. It makes it much easier for the firefighters in the building to see.

Dangerous superheated gases need to be ventilated to allow firefighters to safely and quickly rescue trapped occupants and extinguish the fire. By venting the window (horizontal ventilation) of a room that is on fire, it actually helps to contain the fire within that room of origin. Otherwise heated gases spread throughout the inside of the house. Breaking the window really prevents a great deal more damage than it appears to cause.

It may look like we just like to take out our aggressions, but there is a reason. Broken windows and roof venting allow smoke and heat to escape, causing less damage and allowing firefighters to better to their job.

This all depends on you and the fire protection features of the building you are in at the time of the fire. There are ways to improve your chances of escaping a fire such as: If you are trapped and you know the fire department is on scene, make your location known by yelling, opening a window and hanging something out, or calling 9-1-1 and relaying your location to the dispatcher. Do not hide under a bed or table! Stay near a window or doorway.

A. NetCall works on the upstream bandwidth, if people are downloading music from your computer this could affect call quality because your available upstream bandwidth will be reduced by the amount taken for the file transfers. Ensure you aren't running a file share program on your computer such as Kazaa. For information on disabling file sharing software visit http://www.sunwave.net/internet_bandwidth.asp

The reason both have to be considered is that as soon as a Homeowner has a problem with moisture penetration near the top of their house, they think that the roof must be leaking, whether it is or not.

Contact the Building and Safety Division at (909) 620-2371 or pick up a flyer title "Do you need a building permit?"

If you have a CD-RW drive on your computer, Windows XP has an integrated CD burning feature that allows you to burn data files onto recordable CDs. For Wellesley College-owned computers, there is a better CD-burning program called Roxio Easy CD-Creator that you may use. There are 2 types of recordable CDs: CD-R or CD-RW. CD-RWs are CDs that are re-writable, meaning that you may erase the CD at any time and re-use the CD to burn more files onto it.

Examination of plans, calculations and specifications for compliance and enforcement with the building, electrical, plumbing, and mechanical codes.

The Floating Foundation Deck System has been accepted in 49 of the 50 states. New Jersey is the only state that does not allow the system to be used. Building department policies vary widely from state to state, and each township/county may be completely different. Even though a state may have one building code, the city/county may choose to impose greater regulations and restrictions.

Yes! To build and maintain a successful green roof, there are several design and installation problems to avoid: Herbicides will eventually leach out of materials, escaping into the environment and diminishing the root-inhibiting function of the root-barrier. When supplemental root-barriers are required, we recommend using thermoplastic membrane. Copper films are recent development in the green roof industry.

Replacing a roof, whether on a commercial or residential building, is a labor-intensive project and, depending on the type of roof, could take anywhere from a few days to 2 or more weeks. The time involved is substantially affected by the weather, as well. Wind, snow, rain, or even just the threat of one of these and will slow the process considerably. For built-up roofs, removing and replacing the roof will probably proceed at a rate of approximately 1,500 square feet per day.

Critical security vulnerabilities have been discovered in Microsoft Windows and Internet Explorer, and though some of these don't affect iRider, iRider does inherit some of them. (Two recent serious security problems (1, 2) do not affect iRider.) Users should diligently install updates available on Microsoft's website. See the Microsoft Windows Update site for updates, patches, or more information. If you use Windows XP, we strongly recommend installing Windows XP Service Pack 2.