The issue of the distance between fire hydrants and road edges
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Hello, friends! When conducting the safety design for hazardous chemical construction projects, does one encounter simple issues such as the placement of fire hydrants: the distance between fire hydrants and the roadside? The following two specifications differ significantly in this regard; the project owner is a petrochemical company, yet the construction project is not a petrochemical project. Please share your views on this issue – what distance should be set? (In reality, the construction party installed fire hydrants at intervals of 5 meters each; moreover, there is also a 5-meter distance between the fire hydrants and the equipment area. I find this arrangement very awkward and it represents a significant waste of land resources.) Thank you for your valuable advice! :handshake Code for Fire Protection Design of Buildings GB50016-2006 8.2.8 The layout of outdoor fire hydrants shall comply with the following provisions: 1 Outdoor fire hydrants shall be installed along roads. When the road width is greater than 60.0 m, fire hydrants should be installed on both sides of the road, preferably near intersections ； 2 The fire hydrants in the storage areas for Class A, B, and C liquids and liquefied petroleum gas storage areas shall be located outside the fire dike or protective wall. Fire hydrants within 15 meters of the tank wall should not be included in the count of those available for use with that tank ； 3 The spacing between outdoor fire hydrants should not exceed 120.0 m ； 4 The protection radius of outdoor fire hydrants should not exceed 150.0 m ； Within a protection radius of 150.0 m from municipal fire hydrants, outdoor fire hydrants need not be installed when the outdoor fire water demand is less than or equal to 15 L/s ； 5 The number of outdoor fire hydrants should be determined through comprehensive calculations based on their protection radius and the amount of water required for outdoor firefighting; the water flow rate per outdoor fire hydrant should be estimated at 10–15 L/s ； Municipal fire hydrants located within a distance of 5 to 40 meters from the protected area can be included in the count of outdoor fire hydrants ； 6 Outdoor fire hydrants should preferably be above-ground type. Above-ground fire hydrants shall have 1 fitting of DN150 or DN100 and 2 fittings of DN65. When using outdoor underground fire hydrants, there should be one hydrant outlet of each DN100 and DN65 size. Outdoor fire hydrants installed in cold areas should have anti-freezing measures ； 7 Fire hydrants should not be more than 2.0 m from the roadside, and should be at least 5.0 m away from the outer walls of buildings ； 8 The fire hydrants in the process plant area should be located around the process equipment, with a spacing of no more than 60.0 m between them. When the width of the process plant area is greater than 120.0 m, fire hydrants should be installed along the roads within that area. Code for Fire Protection Design of Petrochemical Enterprises GB50160-2008 8.5.5 The installation of fire hydrants shall comply with the following provisions: 1. Above-ground fire hydrants are preferred ； 2. Fire hydrants should be installed along roads ； 3. The distance from the fire hydrant to the edge of the road should not be more than 5m ； It should be no less than 5m from the exterior wall of the building ； 4. Above-ground fire hydrants should be no less than 1.0 m from the edge of urban roads ； It should be no less than 1.0 m from the shoulder of a highway-style two-lane road ； 5. The large-diameter outlet of above-ground fire hydrants should face the road. When its installation site may be subjected to vehicle collisions, protective facilities should be installed around it ； 6. Underground fire hydrants shall have visible markings.
Since it’s not a petrochemical project. That’s 5 meters.
There is often a difference between actual settings and specifications; our distance from the roadside is generally 2 meters. There are ditches along our roads, with fire hydrants located on the outside of those ditches.
The nearest fire hydrant in my company is less than two meters away from the road
Outdoor fire hydrants are primarily used to supply water to fire trucks. Their DN100/DN150 connections are linked to the fire truck’s water intake pipes, which are typically 2 meters long each; therefore, it is advisable that outdoor fire hydrants not be too far from the roadside, to facilitate access for fire trucks to draw water. If the distance is too great, the fire truck will have to draw water using hoses, and the amount of water available will be much smaller. It is recommended to keep a distance of no more than 2 meters from the road edge in accordance with building codes
According to you, the building codes should be applied; if it’s within a petrochemical plant area, then the petrochemical regulations should be applied
I have a question now: the protection radius for outdoor fire hydrants is 120 meters, but clause 8.2.8 states that the distance between fire hydrants in the process plant area should not exceed 60 meters. So, do the fire hydrants in this process plant area refer to those indoors or outdoors?
Reply to 7# Humble: 60 meters refers to the indoor area! That’s the rule in Shanghai.
Don’t be misled by those upstairs. 8.2.8 refers to the spacing between outdoor fire hydrants. For indoor fire hydrants, refer to: 8.4.3 The layout of indoor fire hydrants shall comply with the following provisions: 1 Except for equipment floors where there are no flammable materials, fire hydrants shall be installed on every floor of buildings equipped with such hydrants. In unit and tower-type residences, fire hydrants should be installed on the first floor of the stairwell and on the landing platforms at each floor. When it is difficult to install two fire service risers, one riser can be used, but a fire hydrant with two outlets and two valves must be employed. The vertical pipe of the dry-type fire hydrant should be equipped with a quick connection and a check valve at the exit location on the first floor to facilitate water supply from fire trucks ； 2 A fire hydrant should be installed in the room in front of the fire elevator shaft ； 3 Indoor fire hydrants should be installed in locations that are easily visible and accessible. The height of the faucet outlet above the ground level or the operating surface should be 1.1 m; the direction in which water flows should be downward, or at a 90° angle to the wall on which the fire hydrant is installed ； The distance between the plug opening and the inner edge of the fire hydrant box should not affect the connection of the fire hose ； 4 The fire hydrants in the cold storage should be located in corridors at normal temperature or in stairwells ； 5 The spacing of indoor fire hydrants shall be determined by calculation. In high-rise factory buildings (warehouses), elevated warehouses, and factory buildings of categories A and B, the spacing between indoor fire hydrants should not exceed 30.0 m ； In other single-story and multi-story buildings, the spacing between indoor fire hydrants should not exceed 50.0 m ； 6 Fire hydrants of uniform specifications should be used within the same building
This post was last edited by lyhh9024 on 2010-9-2 20:38. Code for Fire Protection Design of Buildings GB50016-2006, Section 7: Fire hydrants should be no more than 2.0 m away from the roadside, and not less than 5.0 m away from the outer walls of buildings. \"Code for Fire Protection Design of Petrochemical Enterprises\" GB50160-2008 3. The distance from a fire hydrant to the edge of the road should not exceed 5m ； It should be no less than 5m from the exterior wall of the building. Both standards specify an upper limit for the distance of fire hydrants from the road surface, but there are no regulations regarding a lower limit...
Well, it’s better for fire hydrants to be as close to the road as possible; this also makes it easier for firefighters to operate them