Fire prevention plugging example of bridge.
5) After the plugging is completed, the surface of the cushion cap and the surface of the plugging material in the sleeve shall be polished and smoothed with fireproof clay, and the surface shall be painted with identification color.
The quality requirement is that the fireproof bag is placed tightly, can play the role of fire and smoke prevention, and the surface of the fireproof mud is flat and beautiful.
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3) The size of the casing is inappropriate, and the sealing between the outside of the casing and the wall is not tight.
The incombustible materials in the casing should be filled tightly without loosening.
The plugging method in the same tube well shall be consistent.
Quality requirements 1) The size of the sleeve shall be two sizes larger than the pipe diameter after the pipe insulation.
2) The plugging material shall be filled with incombustible rubber and plastic insulation material or incombustible rock wool.
3) The casing shall be adjusted to be concentric with the pipe, and the outer side of the casing and the wall shall be leveled with cement mortar.
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4) The casing length is not appropriate.
4) The outer side of the casing shall be poured with mortar around the casing, and the height of the cushion cap shall be consistent with the height of the casing.
Fire prevention plugging of bridge and bus.
Construction process requirements 1) After pipeline installation, the casing should be adjusted to be concentric with the pipeline.
Problems that are easy to occur during construction 1) The reserved hole size is not appropriate.
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3) The reserved hole in the shaft shall be built with a waterstop, and the table top shall be smooth and beautiful.
Construction process requirements 1) The sleeve should be installed at the same time as the horizontal pipe, and the length should be consistent with the wall thickness.
2) The reserved deviation of the casing is not concentric with the pipeline.
Problems that are easy to occur during construction 1) The insulation layer of the insulated air duct in the casing is discontinuous.
4) The surface finish is uneven and beautiful.
On the ground with water, the upper opening of the casing shall be 5cm higher than the finished surface of the ground.
5) The protective steel plate is not fixed firmly, the size is not cut properly, and the fireproof coating is not painted.
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Fireproof plugging of pipeline passing through the floor.
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If fire prevention and plugging are not done, the fire or smoke will spread rapidly without any holes.
Therefore, as an important process in the mechanical and electrical engineering, fire prevention and plugging must be fully in place, and should also take into account the convenience of penetration maintenance and the neat and beautiful appearance quality.
1) According to the section size of bridge and bus, holes through the wallboard shall be reserved.
2) The plugging material is combustible and does not meet the requirements.
2) The protective steel plate should be 4mm thick steel plate, and the width and height should be added 200mm on the basis of the size of the bridge; The protective steel plate shall be derusted first, then painted with anti-rust paint, and finally painted with fireproof paint according to the requirements.
5) Use fire clay to fill the gap between cables, bridges, fire bags and waterstops.
2) The fireproof bag is soft and not dense.
Schematic diagram of fire-proof plugging of pipeline passing through the floor.
4) The fire protection package shall be placed layer by layer in order, the height of which shall be roughly flush with the water stop platform, and shall be arranged neatly and tightly to prevent the spread of fire.
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4) The fixing of the fireproof board is unreasonable, the cutting of the board is uneven, and the fixing point is at random, which is not beautiful.
The quality requirement is that the insulation layer of the insulated air duct should be continuous, and the non-combustible materials in the sleeve should be filled tightly to play the role of fire and smoke prevention.
4) After the completion of the wall, use fire stop rings to block both sides of the casing.
5) The sealing surface is not properly treated and the appearance quality is poor.
Problems that are easy to occur during construction 1) The length of pipe casing and the height above the ground do not meet the requirements.
4) Improper casing size.
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3) The inner side of the casing shall be filled with incombustible materials to prevent fire and smoke.
Construction process requirements.
3) The reserved deviation of the casing is not concentric with the pipeline.
The air duct passing through the fire compartment should be equipped with fire dampers.
The thickness of the casing through the firewall shall not be less than 1.6mm.
On the ground without water, the height of the casing shall be no less than 3cm and no more than 5cm higher than the ground.
2) The inner side of the casing shall be filled with incombustible materials to prevent fire and smoke.
3) The casing is not set or the casing thickness does not meet the specification requirements.
The quality requirement is that the size of the casing should be two sizes larger than the pipe diameter after the pipe insulation.
3) The finishing of fire clay is not flat and beautiful, and the closing is not tight.
Fireproof plugging of air duct through wall The schematic diagram of fire-proof plugging of air duct through wall The example of fire-proof plugging of air duct through wall 1.
The reserved holes shall be expanded by 100mm for the width and height of bridge and bus.
All professional pipes in the electromechanical installation engineering of the power knowledge base, such as bridges, water pipes, air ducts, etc., will penetrate the floor and wall, forming a large number of holes or gaps.
2) The plugging material is combustible and the plugging is not dense.
5) After plugging, use cement mortar to fill and trowel.
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The fire clay sealing should be uniform and tight, and the final surface should be smooth and beautiful.
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3) The thickness of the casing steel plate shall be selected according to the length of the long side of the air duct, which shall meet the specification requirements.
Three-pipe through-wall fireproof plugging Schematic diagram of pipeline through-wall fireproof plugging Example 1.
2) The lower opening of the casing shall be flush with the bottom edge of the floor.
Construction process requirements 1) The insulation layer of the insulated air duct in the casing shall be continuous without fault.
The decorative surface can be added for projects with higher requirements.
Problems that are easy to occur during construction 1) The plugging material is combustible and does not meet the requirements.
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Example 1.
Fire prevention plugging schematic diagram of bridge.
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2) Non-combustible materials in the casing shall be filled tightly without loosening.
4) The outer side of the casing and the wall shall be filled with wall materials.
