Size and layout of the room: a basic NFPA rule is that there should be no more than 75 feet between fire extinguishers and that they should be accessible. Naturally, then, the square footage contained in a building and its layout will determine the number needed.Click to see full answer. Accordingly, how do I calculate how many fire extinguishers I need?To calculate how many 13A extinguishers are required, divide the floor area by 200, and round up. Example: floor area 1300 square metres: 1300 ÷ 200 = 6.5 Round up to 7 7 x 13A water based extinguishers.Beside above, how many fire extinguishers are required in a building Philippines? One portable fire extinguisher is also required for every 200 square meters of open space. If that space is divided into two, then two fire extinguishers are required. A fire alarm system is also required. In this regard, how many fire extinguishers do you need per square foot? A fire extinguisher, rated not less than 2A, shall be provided for each 3,000 square feet of the protected building area, or major fraction thereof. Travel distance from any point of the protected area to the nearest fire extinguisher shall not exceed 100 feet.Where should a fire extinguisher be placed?To prevent fire extinguishers from being moved or damaged, they should be mounted on brackets or in wall cabinets with the carrying handle placed 3-1/2 to 5 feet above the floor. Larger fire extinguishers need to be mounted at lower heights with the carrying handle about 3 feet from the floor.

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