What are 7 variations of natural and constructed fire control lines?
Types of fire line may include: scratch line, hand line, wet line, firing line, retardant line, dozer or tractor-plow line.
What is a constructed fireline?
In building fireline, all fuels are removed and the surface is scraped to mineral soil on a strip between 6 inches and 3 feet wide, depending upon the fuel and slope. It needs to be wide enough to prevent smoldering, burning, or spotting by embers blowing or rolling across the line.
When constructing a fireline The specifications should generally be?
A general guideline for determining the width of a fireline is that it should be one and one half times as wide as the dominate fuel is high. The scraped portion of a fireline is generally one to three feet wide. However, in timber a fireline is generally 20 to 30 feet wide with a three to four foot scrape.
What is a dozer line?
Bulldozer lines are constructed by blading the ground –removing flammable plant material down to bare soil. Dozer lines can vary in width from a single dozer blade to many dozer blades wide, depending on the type of vegetation burning.
What is a fireline in topography?
Fire line is the path which is cleared around the forest to prevent the spreading of fire. Concept: Concept of Interpretation of Topographical Maps.
What is underslung line?
A fireline below a fire on a slope. Should be trenched to catch rolling material. Also called underslung line. see also: Cup Trench.
What is an indirect fire line?
Indirect Line – Fireline placed a distance away from the fire edge. Mop Up –After an area has burned, extinguishing or removing burning material near control lines, felling snags and trenching logs to prevent rolling, to make a fire safe, or to reduce residual smoke.
How deep are fire lines?
Underground fire service main required depth of cover, Top of pipe to grade is 1 foot below frost line, 30” min. cover and 36” min. cover under driveways.
What is a fire perimeter?
Fire Perimeter: The entire outer edge or boundary of a fire. Fire Season: 1) Period(s) of the year during which wildland fires are likely to occur, spread, and affect resource values sufficient to warrant organized fire management activities.
Where do you mostly find Fireline?
Answer. Explanation: Fire Line’ on a topographical map means the indication of a clearing or a gap or an empty space that runs within a forest area. It is often demarks a trench which is kept filled with water or sand.
How is fire line represented?
It is often demarks a trench which is kept filled with water or sand. This is done in order to stop the spread of fire in the forest, and on topographical maps the existence of these trenches are shown with the fire line. It is a global standard symbol.
What is scratch line wildland fire?
Scratch Line: An unfinished preliminary fire line hastily established or built as an emergency measure to check the spread of fire.
What is the difference between direct and indirect fire?
A weapon engaged in direct fire exposes itself to return fire from the target. By contrast, indirect fire refers to firing a projectile on a ballistic trajectory or delivering munitions by guided or unguided missiles.
What is a private fire line?
A private fire service main is “the pipe and its appurtenances on private property (1) between a source of water and the base of the system riser for water-based fire protection systems, (2) between a source of water and inlets to foam-making systems, (3) between a soruce of water and the base elbow of private hydrants …