The part of opening is as shown in the figure.
The wall wetting sprinkler usage and specification shall; be according to C3.4 A(I) and C3.4 A (II) which clarifies the specification for automatic closing windows and permanently closed windows. As per C3.8 d, it is applied to windows that could expose an evacuating person or fire-fighter from radiant heat and fire in the building. The sprinkler system may be provided within the side of the window and sprinkler heads may also be located alongside the window outside the exit. The openings must be protected within a distance of 6m from the building.
For vertical lined up windows, the external walls are required to be fire-resistant according to clause126.96.36.199 and protected by nonexpendable fire windows with FRL not less than -/60/- Apart from these the window which faces the boundary of an adjoining element may not be less than 600 mm and the window faces towards another building of not less than 1200mm from building provided with bathroom and toilet of not more than 1.2 m2 od the opening should have an area, not more than 0.54 m2 and window shall be steel-framed and no opening sashes om wired glass and opening shall be enclosed with translucent hollow glass blocks. The usage of automatic closing windows or permanently closing windows along with usage of wall wetting sprinklers is also entertained. Fire isolated exits may be provided with adequate protection of door and window openings. A sprinkler system may be installed within fire isolated exit and subjected to requirements for protection from external fire.
Under the NCC Deemed to satisfy provisions, the fire sprinkler system is required only if the height of the building is more than 25 m which accommodates the aged, children, and disabled persons. As the height of the building from the plan is considered to be less than 10 m, there is no requirement for exist serves to be fire isolated.
The fire hose reels may be appropriate with numerous factors like the size of fire compartment and measurement for sizes for potential fire, how the function of the building will affect the fire loads in structure, and specification for the fire safety system to affect the fire spread rate and danger in terms of potential harm exposure from start and spread of fire. The fire hose reel may be installed if properly considered DTS provisions. Portable fire extinguishers shall be installed to cover class A fire risks. The reels shall be installed in an area that is readily accessible in the event of a fire emergency. The location shall be marked with proper signs and shall be compliant according to the provisions and standards of AS 1221.The fire hose reels are to be installed in areas where internal fire hydrants are used., For the area with 400 m2, the level of hazard justifies the installation of fire hose reels and allows occupants to attempt an initial attack of fire. Fire hose reels are not permitted to be installed along with fire isolated exit by avoiding the hose pass through the doors provided. The main purpose of providing fire hydrant is to provide adequate water and maintain sufficient pressure and water flow to fight fire and brigade. The pressure and flow from hydrants are to be considered with great care and designers are expected to meet sufficient requirements and cover all matters such as the provision of coupling and pressure to suit the nozzle etc. It’s also to be checked the nature of fire hazard that danger can cause in terms of the degree of fire exposure from initial start to the spread of fire. The main reason to provide fire hydrant is to benefit the brigade's intention o fire and reduce the fire passage time.AS 2419.1 recommends all details and specifications and location of the number of fire hydrants whenever required. The fire hose reels may be located at 36 m apart such that the occupants can reach fire within any part of the building. The maximum distance to a fire hydrant from the closest point on the building shall not exceed 600 ft. for the required building.
National construction code, Guide to Volume 1,2019 Amendment ,NC C 2019 Guide to BCA Volume one, ABCB.
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