Anisur Rahman Zuall

Pipe Schedule Method for Firefighting Sprinkler System                                     Pipe Schedule Method for Firefighting Sprinkler System  The water demand for firefighting sprinkler systems shall be determined by either the pipe schedule method or the hydraulic calculation method, in this article we will discuss the pipe schedule method. What is pipe schedule system?! According to NFPA 13, Pipe Schedule System is defined as sprinkler system in which the pipe sizing is selected from a schedule that is determined by the occupancy classification and in which a given number of sprinklers are allowed to be supplied from specific sizes of pipe. Where can we use pipe schedule method?! New systems of 465 m2 or less. Additions or modifications to existing pipe schedule systems. Classification of occupancies according to hazard NFPA 13 classifies the occupancies according to the quantity and combustibility of contents, the expected rates of heat rel

The placement of fire exit signs should never be overlooked. Not only is the effective placement of these signs critical to the safety of the people working or visiting your building, they're also required by building and fire codes to ensure those unfamiliar with a building's layout are directed to safety if a fire were ever to happen. If a fire ignites and your building starts to fill with smoke: Do you know how to get out quickly? Do you know where the closest exits are? What if your first choice for a fire exit is blocked by smoke or fire? Is there an alternate exit? Answering these questions before you encounter them will go a long way in keeping the people in your building safe! Placing fire exit signs effectively can keep the occupants safe by directing them to safety even if they're not familiar with the building's layout. Follow the Green Running Man! In 2010, the National Resource Council's building regulations group updated its model buildi

A guide to Fire Alarm System types Contents: Conventional fire alarm systems Two-wire fire alarm systems Analogue addressable fire alarm systems Wireless fire alarm systems Aspirating smoke detection systems 1. Conventional fire alarm systems Conventional, or four-wire, fire alarm systems have been extensively used in smaller properties such as shops and restaurants for many years. Less expensive to purchase than other types of alarm system, they work by dividing the building into a number of detection zones, with the detectors and call points within each zone hardwired on dedicated circuits to the control panel. There may be multiple detectors on a single zone. A separate two-core, fire-protected cable for each alarm sounder or bell is needed because they are wired to different loops. If a detector is activated, the control panel identifies the circuit that contains the triggered device and so indicates the zone from which the fire alarm has originated, but the area

Spaces about Electrical Equipment There are two categories of spaces about electrical equipment: Working Space & Dedicated Electrical Space According to NFPA 70 (NEC) 1- Dedicated Electrical Space, this term applies to the space reserved for future access to electrical equipment and to protection of the equipment from intrusion by nonelectrical equipment. 2- Working Space, this term applies to the protection of the worker. So, Access and working space shall be provided and maintained about electrical equipment to permit ready and safe operation and maintenance of such equipment. HOW TO DETERMINE THE DEDICATED ELECTRICAL SPACE OF ELECTRICAL EQUIPMENT? The space equal to the width and depth of the equipment and extending from the floor to a height of 1.8 m above the equipment or to the structural ceiling, whichever is lower. Note that: Dedicated Electrical Space shall be dedicated to the electrical installation, no piping, ducts, leak protection apparatus, or other