five The drainage riser in the lining wall is connected, the drainage riser in the lining wall is not connected, and the drainage hole is blocked by garbage, so the water cannot flow into the water collecting well, overflow out of the wall and flow to the pavement
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two Dredge the water collecting well, install and commission the water pump, clean up the ponding and garbage in the water collecting well in the basement, dredge the drainage pipe, ensure that the ponding in the drainage layer can be smoothly discharged into the water collecting well, speed up the installation and commissioning of the water pump in the well, and increase the input quantity of temporary water pump, water bag, temporary electric box and cable, so as to reduce the water level in the well and improve the efficiency of drainage network
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These problems often lead to project rework, quality and safety hazards and affect the development of subsequent processes
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The specific problems corresponding to different projects are also different for the wet condensation of the basement constructed in summer
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eight The sludge and garbage in the outdoor sewage well and rainwater well shall be cleaned to ensure that the accumulated water flows into the municipal pipe network in time
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three Dredge the drainage ditch, install water grate, clean the ground drainage ditch, ensure that the ground water flows into the drainage ditch, flows into the water collecting well for internal and external drainage, and install water grate to ensure that the drainage ditch is unblocked
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In addition, in the construction stage, the project has not been delivered for use, there is no large flow of personnel and vehicles, and lighting, ventilation and other equipment have not been put into operation
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Ensure that a certain number of cleaning personnel clean up the ground garbage and ponding in a large area on each floor of the basement every day, and dry the ground with sawdust
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Source: in case of infringement by Luban alliance of construction engineering, please contact to delete
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The general contractor shall take the lead, and each professional subcontractor shall arrange on-site technicians and on-site special protection to form a patrol team, and establish a registration and filing system
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This is because when the temperature inside and outside the basement is large, the air humidity is large, and the surface temperature of the object is lower than the dew point temperature of the nearby air, condensed water will be produced
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If no measures are taken, the problem of moisture and condensation will be very serious, affecting the quality of completed projects and the development of subsequent projects
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Specifically, a series of technical and management measures can be taken to prevent and control: ▪ Repair structural and functional defects, sealing of external wall and roof structure openings, internal and external sealing of through wall plate casing, waterproof repair of new openings, installation and commissioning of water pumps in water collecting wells, dredging of ground drainage ditches, smooth drainage of accumulated water in drainage layer, connection and installation of drainage pipelines, installation of ground floor drains, normal operation of air supply and exhaust system, and addition of temporary blowers ▪ Improve the process system management defects, establish the power-off commissioning publicity system, establish the pressure and water test publicity system, establish the daily inspection and maintenance equipment system, establish the daily inspection and leakage system, establish the punishment publicity system for violations, strengthen the education of construction personnel, establish the emergency treatment scheme, arrange personnel to clean up the ponding every day The following project example has achieved good results in moisture-proof and dehumidification of basement in summer construction through on-site measures and system guarantee, which can be used for reference by engineering friends
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Implementation effect: the basement ground is dry without ponding, the ramp is dry without ponding, the ceiling, the wall is white without mildew, the staircase is white without mildew, the pipe surface is dry without condensation, and the environment of the machine room is dry
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Site measures one The air supply and exhaust system shall be installed in the temporary air supply room where the air supply and exhaust system can not be started, so as to reduce the air humidity in the underground air supply room as much as possible
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two Establish a publicity system for pressure and water test to ensure that all participating units know the time of pressure and water test in advance, reasonably arrange construction and emergency measures in place, and deal with water leakage in time
six Clean up the ground garbage and ponding every day
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After the gap between the pipe and the opening is blocked, the detailed waterproof nodes of the pipe root shall be handled on the roof
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seven The new opening of the roof shall be blocked
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System guarantee one Establish a power failure publicity system to ensure that all participating units know the power failure or power transmission time in advance, reasonably arrange the construction and emergency measures in place, and eliminate potential safety hazards
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Common problems such as damp and mildew on the wall, ponding on the ground, condensation and corrosion of pipes, corrosion of metal fittings and damp and mildew on the ceiling..
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The new pipe opening shall be opened for the basement roof due to the construction needs
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three A daily patrol system shall be established to check water leakage, violations, equipment operation and potential safety hazards
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Therefore, attention must be paid to moisture-proof and dehumidification in the basement during summer construction, The general idea adopts the combination of “Dredging” and “blocking”: dredging the drainage ditch, blocking the structure, opening, dredging the water collecting well, blocking the temporary opening, dredging the drainage pipe, blocking the through wall casing, dredging the drainage layer, blocking the pressure, water leakage, dredging the air supply and exhaust, blocking the man-made destruction of the moisture-proof and dehumidification of the basement in summer
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The problem of moisture condensation in the basement during summer construction
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After dredging and the drainage pipeline is installed in place, the accumulated water in the lining wall smoothly flows into the water collecting well, and the accumulated water on the ground is relieved
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four Holes are drilled on the side wall of the drainage layer and the side wall of the water collecting well to speed up the drainage of water in the drainage layer and reduce the water level under the slab, so as to effectively control the ground humidity
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In summer, the problem of moisture condensation in the basement also follows
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Moisture and condensation in the basement affect the quality and progress of civil engineering, electromechanical and decoration projects
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The measures taken in the above projects are for your reference in order to better solve the problems, Beware of damage and rework of finished products of civil engineering, electromechanical and decoration works due to moisture condensation
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