First, the causes of high-rise residential exterior wall leakage
(A) infilled wall construction factors
Construction units generally have strict requirements for the main frame and structure, but they have not paid enough attention to the construction of infilled walls. When the plastering layer of the inner wall is removed from the seepage part of the outer wall, it can be seen that there are "blind joints" in the vertical joints of the wall, and some mortar joints are even transparent. Some scaffolding holes are not blocked with bricks, but only with some mortar, resulting in holes inside and "windows" outside.
(B) Decoration factors
The brick foundation of the outer wall cannot be cleaned cleanly,
Poor treatment at the grass-roots level, thick plastering of the leveling layer, and lack of water permeability of brick masonry resulted in cracking and hollowing of the leveling layer. On-site tile jointing is uneven, not full, and not serious. There are many "blind joints" at tile splicing, and the mortar on the back of tile is not full, and there are running grooves. These phenomena are the causes of water seepage on the outer wall of high-rise residential buildings. (3) Installation factors
When installing the storm sewer, the root of the supporting angle steel was not blocked with mortar, and some households were not blocked with mortar when installing air conditioners. The periphery of the external wall pipeline is not tightly sealed, which leads to water seepage in the external wall of high-rise residential buildings.
(D) Aluminum alloy window installation factors
The sealant between aluminum alloy window frame and wall is not tight enough.
Some are too thin, and some have lost their waterproof function because of the aging of glue. The rubber strip installed between the glass and the window sash is broken, cracked, dislocated and missing, resulting in a large gap between the window sash and the glass. There is no drainage hole in the slide rail of aluminum alloy window. In case of heavy rain, accumulated water will seep into the room. Second, measures to prevent high-rise residential exterior wall leakage
(A) with low water absorption block for exterior wall design.
Control the moisture content of the block within a certain range, and the mortar used for masonry should be cement mortar. Mortar ratio should also be strictly controlled to ensure the strength of mortar and improve its water seepage resistance.
(B) governance wall defects
When the cantilever scaffold is dismantled, all the steel pipes in the wall should be dismantled, and then the holes should be blocked with mortar. After the external wall is removed, the bolt hole should be dug into a bell mouth shape immediately.
Then block it with mortar. (3) Repair the cracks in the lap joint
The contact between the strong beam and the block should be about 600 mm along the column height or the wall, and the Rachel reinforcement should be set in the mortar joint of the wall. When building blocks, Rachel steel bars should be pressed into mortar joints to improve the deformation resistance of walls. When the block is about 200 mm near the bottom of the beam, the interval should be about fifteen days.
Ensure that the block is completely settled. (4) External wall construction
The thick plastering part of the external wall should be constructed in layers, and the inner layer should be provided with steel mesh to control the proportion of plastering mortar. Exterior wall decorative surface must be waterproof and beautiful.
The quality should be strictly controlled when the external wall is faced with brick, and it should be checked carefully to avoid empty drum. The mortar joint of ceramic tile should be controlled above 8 mm. When jointing, first tick the horizontal seam, and then tick the vertical seam. After the gap of the tile is hooked, wipe the surface of the tile clean.
(5) Strengthen construction management
In the process of construction, the construction procedures shall be strictly implemented, and subcontracting, subcontracting or time limit grabbing shall not be allowed. Determine the project cost scientifically and reasonably. In short, high-rise building seepage will not only affect the appearance, but also affect the function of the house. In the process of construction, attention should be paid to details.
Strengthen quality supervision and dynamic management and resolutely prevent all kinds of quality problems. Fire escape knowledge of high-rise buildings
Knowing these common fire fighting knowledge can save your life at a critical time.
Don't jump off a building in a hurry in case of fire in a high-rise building. If the floor is on fire, the stairs are not sealed yet, and the fire is not very fierce, you can put on clothes soaked with water and quickly rush downstairs from upstairs or enter the evacuation stairs and evacuate to a safe place. To escape from the aisle, the cat should be waist-high, close to the wall and walk with its head as close to the ground as possible. People with children should take them away. Cover your mouth with a wet towel when you escape to reduce the harm of smoke.
Where is the office building "refuge floor"? What facilities are there?
Between the first floor of a high-rise building and the first refuge floor or two refuge floors, it generally does not exceed 15 floor. The reason for this regulation is that the rescue capacity of most fire ladders is about 50 meters, which is roughly equivalent to the height of 15 floor. Safety stairs must pass through the refuge floor. When running down the stairs, the evacuees were forced to enter the refuge floor, and they could only go out from another exit after a circle.
The first rule of fire escape: leave the fire as soon as possible and never return to it.
When a fire breaks out, you can use a fire extinguisher or fire hydrant to put out the fire at the first time. At this time, you should also ask people around you to participate in the fire fighting and alarm. If the fire can't be controlled, you should immediately evacuate yourself and close the door when you leave to prevent smoke from entering the aisle. After escaping from the fire, don't worry about what you left indoors, then go back and get it.
Residents below 10 floor can use the staircase corridor to escape downwards. Residents above 12 floors can cover their nose and mouth with wet towels at the beginning of the fire, and then run to the rooftop. If the fire is in the middle and late stage, residents should stop running upstairs, find a relatively safe balcony or window to escape as soon as possible, keep breathing smoothly and wait for the rescue of firefighters.
Misunderstanding 1 of escape: jump off the building blindly by elevator.
Never get under the bed, in the closet or in the attic to avoid fire. These are the most dangerous places in the fire scene. In addition, don't jump off a building blindly. If you can't get timely rescue, live in a tall building and don't jump off a building blindly. You can tear sheets, quilts, curtains and other fabrics in the room into load-bearing strips and connect them into ropes, which can be tied to the components of windows or balconies and slid downstairs. You can also use doors and windows, balconies, drainage pipes, etc. to escape and save yourself.
Avoid mistakes 3: exaggerate or avoid danger
When the fire signal comes, if the fire danger is exaggerated by subjective imagination, it will easily cause panic, make people lose their minds, have no choice about the evacuation route, and even jump from dozens of high-rise buildings; On the contrary, deliberately avoiding danger will consume valuable evacuation time.
Avoid mistake 2: jam, go with the flow.
When the building is on fire, it is the choice of a considerable number of people trapped on the upper floor to escape. When fireworks invade the stairwell, the "smoke effect" will make the smoke spread rapidly upward, causing people to faint and even die.
Editor's summary: the information about how to deal with the seepage of high-rise external walls is introduced here for everyone. I hope this article is helpful to everyone. If you still don't understand, please leave me a message below and we will answer you as soon as possible.
And this height is roughly equivalent to the height of 15 floor. Safety stairs must pass through the refuge floor. When running down the stairs, the evacuees were forced to enter the refuge floor, and they could only go out from another exit after a circle. The first rule of fire escape: leave the fire as soon as possible and never return to it.
When a fire breaks out, you can use a fire extinguisher or fire hydrant to put out the fire at the first time. At this time, you should also ask people around you to participate in the fire fighting and alarm. If the fire can't be controlled, you should immediately evacuate yourself and close the door when you leave to prevent smoke from entering the aisle. After escaping from the fire, don't worry about what you left indoors, then go back and get it.
Residents below 10 floor can use the staircase corridor to escape downwards. Residents above 12 floors can cover their nose and mouth with wet towels at the beginning of the fire, and then run to the rooftop. If the fire is in the middle and late stage, residents should stop running upstairs, find a relatively safe balcony or window to escape as soon as possible, keep breathing smoothly and wait for the rescue of firefighters.
Misunderstanding 1 of escape: jump off the building blindly by elevator.
Never get under the bed, in the closet or in the attic to avoid fire. These are the most dangerous places in the fire scene. In addition, don't jump off a building blindly. If you can't get timely rescue, live in a tall building and don't jump off a building blindly. You can tear sheets, quilts, curtains and other fabrics in the room into load-bearing strips and connect them into ropes, which can be tied to the components of windows or balconies and slid downstairs. You can also use doors and windows, balconies, drainage pipes, etc. to escape and save yourself.
Avoid mistakes 3: exaggerate or avoid danger
When the fire signal comes, if the fire danger is exaggerated by subjective imagination, it will easily cause panic, make people lose their minds, have no choice about the evacuation route, and even jump from dozens of high-rise buildings; On the contrary, deliberately avoiding danger will consume valuable evacuation time.
Avoid mistake 2: jam, go with the flow.
When the building is on fire, it is the choice of a considerable number of people trapped on the upper floor to escape. When fireworks invade the stairwell, the "smoke effect" will make the smoke spread rapidly upward, causing people to faint and even die.
Editor's summary: the information about how to deal with the seepage of high-rise external walls is introduced here for everyone. I hope this article is helpful to everyone. If you still don't understand, please leave me a message below and we will answer you as soon as possible.