{"id":94,"date":"2019-09-12T15:09:45","date_gmt":"2019-09-12T19:09:45","guid":{"rendered":"https:\/\/pressbooks.bccampus.ca\/esm1\/?post_type=chapter&p=94"},"modified":"2019-12-12T14:13:18","modified_gmt":"2019-12-12T19:13:18","slug":"chapter-8-exposures","status":"publish","type":"chapter","link":"https:\/\/pressbooks.bccampus.ca\/esm1\/chapter\/chapter-8-exposures\/","title":{"raw":"Chapter 11 - Exposures","rendered":"Chapter 11 – Exposures"},"content":{"raw":"[caption id=\"attachment_225\" align=\"aligncenter\" width=\"740\"]\"Exposure\"<\/a> raedon
https:\/\/pixabay.com\/users\/raedon-41115[\/caption]\r\n\r\nProtecting exposures will vary on many factors. Fire Officers should be able to identify exposures; and understand how tactical operations can affect, create and eliminate exposure problems.\r\n

Types of Exposures<\/h2>\r\nInternal: fire extends from one area to another within a structure\r\n\r\nExternal: fire extends from the fire building to surrounding buildings\/property\r\n

Internal Exposures<\/h2>\r\n

Fire can travel through natural pathways like concealed spaces, stairs, chutes and shafts. It can also extend vertically up the exterior from building windows or other openings<\/p>\r\n

The concept of protecting interior exposures is to keep fire away from areas that can become involved with fire. These areas can be divided by firewalls. The greater the fire rating, the more protection the exposure has from being involved. Protecting valuables such as computer equipment, company\/personal records, stock and machinery can have very favourable outcomes.<\/p>\r\n\r\n

External Exposures<\/h2>\r\nProtection of external exposures is critical\r\n\r\nShould be prioritized in terms of\r\n

Life safety<\/p>\r\n

Extinguishment<\/p>\r\n

Property Conservations<\/p>\r\n

Adjacent Buildings<\/p>\r\nImproper Ventilation can expose buildings\r\n\r\nConsider fire apparatus and equipment parked near the fire building\r\n\r\nSeparate buildings, whether attached to the fire building or not, are classified as exterior exposures\r\n\r\nGeneral exposure distances:\r\n

A building up to 30 feet from the fire is classified as an exposure<\/p>\r\n

A building 30-100 feet from the fire may be classified as an exposure<\/p>\r\n

A building more than 100 feet from the fire is not an exposure<\/p>\r\n

These are not definite rules due to:<\/p>\r\n

What is burning<\/p>\r\n

Radiant heat being produced<\/p>\r\n

Weather conditions<\/p>\r\n

Wind and direction of travel<\/p>\r\n\r\n

Protecting Exposures<\/h2>\r\n

Dependant on available staffing and apparatus resources<\/p>\r\n

Using water on the exposure is the most effective way of protection<\/p>\r\n

Directing a stream between buildings is less effective<\/p>\r\n

Radiant heat travels through transparent materials such as water<\/p>\r\n\r\n

Tactics for Protecting Exposures<\/h2>\r\n

Coordinated attack on the fire with an adequate flow is the best way to protect exposures<\/p>\r\n

Wash the face of exposed buildings with water to prevent ignition of exposed surface areas by reducing the amount of heat absorbed<\/p>\r\n

Push the fire back into the original area to prevent extension to exposures<\/p>\r\n

Reduce the intensity or extinguish the fire at the points where heat transfer is threatening exposures<\/p>\r\n

Place ventilation holes where the change in convection currents will draw fire away from exposures<\/p>\r\n

Stretch lines to the inside of exposures to cover the possible outbreak of fire<\/p>\r\n

Charge sprinkler system of exposure, if available so that the system is not overwhelmed if fire extends into the exposure<\/p>\r\n\r\n

Radiant Heat Considerations<\/h2>\r\n

Involves the distance of the exposure and the heat output of the fire<\/p>\r\n

The closer a building is to the fire building = the greater the radiant heat being absorbed<\/p>\r\n

Exposures above\/higher than the fire are also at a greater risk<\/p>\r\n

Wind direction<\/p>\r\n

Life hazard in the exposure<\/p>\r\n

Hazard presented by the exposed occupancy<\/p>\r\n\r\n

Prioritizing Exposure<\/h2>\r\n

Distance between exposed structures<\/p>\r\n

Volume and location of fire<\/p>","rendered":"

\"Exposure\"<\/a>
raedon
https:\/\/pixabay.com\/users\/raedon-41115<\/figcaption><\/figure>\n

Protecting exposures will vary on many factors. Fire Officers should be able to identify exposures; and understand how tactical operations can affect, create and eliminate exposure problems.<\/p>\n

Types of Exposures<\/h2>\n

Internal: fire extends from one area to another within a structure<\/p>\n

External: fire extends from the fire building to surrounding buildings\/property<\/p>\n

Internal Exposures<\/h2>\n

Fire can travel through natural pathways like concealed spaces, stairs, chutes and shafts. It can also extend vertically up the exterior from building windows or other openings<\/p>\n

The concept of protecting interior exposures is to keep fire away from areas that can become involved with fire. These areas can be divided by firewalls. The greater the fire rating, the more protection the exposure has from being involved. Protecting valuables such as computer equipment, company\/personal records, stock and machinery can have very favourable outcomes.<\/p>\n

External Exposures<\/h2>\n

Protection of external exposures is critical<\/p>\n

Should be prioritized in terms of<\/p>\n

Life safety<\/p>\n

Extinguishment<\/p>\n

Property Conservations<\/p>\n

Adjacent Buildings<\/p>\n

Improper Ventilation can expose buildings<\/p>\n

Consider fire apparatus and equipment parked near the fire building<\/p>\n

Separate buildings, whether attached to the fire building or not, are classified as exterior exposures<\/p>\n

General exposure distances:<\/p>\n

A building up to 30 feet from the fire is classified as an exposure<\/p>\n

A building 30-100 feet from the fire may be classified as an exposure<\/p>\n

A building more than 100 feet from the fire is not an exposure<\/p>\n

These are not definite rules due to:<\/p>\n

What is burning<\/p>\n

Radiant heat being produced<\/p>\n

Weather conditions<\/p>\n

Wind and direction of travel<\/p>\n

Protecting Exposures<\/h2>\n

Dependant on available staffing and apparatus resources<\/p>\n

Using water on the exposure is the most effective way of protection<\/p>\n

Directing a stream between buildings is less effective<\/p>\n

Radiant heat travels through transparent materials such as water<\/p>\n

Tactics for Protecting Exposures<\/h2>\n

Coordinated attack on the fire with an adequate flow is the best way to protect exposures<\/p>\n

Wash the face of exposed buildings with water to prevent ignition of exposed surface areas by reducing the amount of heat absorbed<\/p>\n

Push the fire back into the original area to prevent extension to exposures<\/p>\n

Reduce the intensity or extinguish the fire at the points where heat transfer is threatening exposures<\/p>\n

Place ventilation holes where the change in convection currents will draw fire away from exposures<\/p>\n

Stretch lines to the inside of exposures to cover the possible outbreak of fire<\/p>\n

Charge sprinkler system of exposure, if available so that the system is not overwhelmed if fire extends into the exposure<\/p>\n

Radiant Heat Considerations<\/h2>\n

Involves the distance of the exposure and the heat output of the fire<\/p>\n

The closer a building is to the fire building = the greater the radiant heat being absorbed<\/p>\n

Exposures above\/higher than the fire are also at a greater risk<\/p>\n

Wind direction<\/p>\n

Life hazard in the exposure<\/p>\n

Hazard presented by the exposed occupancy<\/p>\n

Prioritizing Exposure<\/h2>\n

Distance between exposed structures<\/p>\n

Volume and location of fire<\/p>\n","protected":false},"author":597,"menu_order":11,"template":"","meta":{"pb_show_title":"on","pb_short_title":"","pb_subtitle":"","pb_authors":[],"pb_section_license":""},"chapter-type":[],"contributor":[],"license":[],"class_list":["post-94","chapter","type-chapter","status-publish","hentry"],"part":3,"_links":{"self":[{"href":"https:\/\/pressbooks.bccampus.ca\/esm1\/wp-json\/pressbooks\/v2\/chapters\/94","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pressbooks.bccampus.ca\/esm1\/wp-json\/pressbooks\/v2\/chapters"}],"about":[{"href":"https:\/\/pressbooks.bccampus.ca\/esm1\/wp-json\/wp\/v2\/types\/chapter"}],"author":[{"embeddable":true,"href":"https:\/\/pressbooks.bccampus.ca\/esm1\/wp-json\/wp\/v2\/users\/597"}],"version-history":[{"count":6,"href":"https:\/\/pressbooks.bccampus.ca\/esm1\/wp-json\/pressbooks\/v2\/chapters\/94\/revisions"}],"predecessor-version":[{"id":360,"href":"https:\/\/pressbooks.bccampus.ca\/esm1\/wp-json\/pressbooks\/v2\/chapters\/94\/revisions\/360"}],"part":[{"href":"https:\/\/pressbooks.bccampus.ca\/esm1\/wp-json\/pressbooks\/v2\/parts\/3"}],"metadata":[{"href":"https:\/\/pressbooks.bccampus.ca\/esm1\/wp-json\/pressbooks\/v2\/chapters\/94\/metadata\/"}],"wp:attachment":[{"href":"https:\/\/pressbooks.bccampus.ca\/esm1\/wp-json\/wp\/v2\/media?parent=94"}],"wp:term":[{"taxonomy":"chapter-type","embeddable":true,"href":"https:\/\/pressbooks.bccampus.ca\/esm1\/wp-json\/pressbooks\/v2\/chapter-type?post=94"},{"taxonomy":"contributor","embeddable":true,"href":"https:\/\/pressbooks.bccampus.ca\/esm1\/wp-json\/wp\/v2\/contributor?post=94"},{"taxonomy":"license","embeddable":true,"href":"https:\/\/pressbooks.bccampus.ca\/esm1\/wp-json\/wp\/v2\/license?post=94"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}