Seasonal Construction Assurance Measures Annual Work Plan

Before the rainy season, carefully organize relevant personnel to analyze the rainy season application plan, and prepare the rainy season construction measures according to the rainy season project. The required materials should be prepared before the rainy season.

Establish a flood prevention leading group to formulate flood prevention plans and emergency plan measures, which should include on-site and surrounding residential communities.

Each project has a full-time staff on duty at night to ensure that someone is on duty and on duty, and a weather forecaster is set up to listen to and publish weather conditions.

Construction workers should be trained in the rainy season, and relevant personnel should be organized to conduct a comprehensive inspection and preparation work at the construction site, including temporary facilities, temporary power, and mechanical equipment protection.

Inspect the drainage facilities at the construction site and the production and living base, dredge various drainage channels, and clean up the rainwater drainage outlets to ensure smooth drainage during rainy days.

For the project under construction, it is necessary to set up drainage ditch and water collecting well at the edge of the foundation pit and the bottom of the pit, and make drainage slope, drainage ditch and water retaining sill at the edge of the slope.

Drainage channels are provided on both sides of the road to ensure that they are not slippery, trapped, or accumulating. Clean up obstacles on the scene and keep the roads open. Do not stack items within a certain range on both sides of the road, and the height should not exceed 1.5m to ensure a wide view and smooth roads.

The construction site, the production shed, the warehouse, the canteen, the mixing station, the temporary housing and other temporary construction units shall conduct comprehensive inspection and refurbishment before the rainy season to ensure that the foundation and roads do not collapse, the room does not leak rain, and the site does not accumulate water. .

Before the arrival of the rainy season, the lightning protection devices for the high-rise passenger elevators and high scaffoldings should be made. The quality inspection department should conduct a comprehensive inspection of the lightning protection devices before the rainy season to ensure lightning protection.

Storage and stacking of raw materials

All the cement is stored in the warehouse. If there is no warehouse, special sheds should be set up to ensure no leakage or no tide. The following should be ventilated and surrounded by drainage ditch to avoid water accumulation. The first floor of the structure can be fully utilized.

Sand and stone must have sufficient reserves to ensure the smooth progress of the project. There should be drainage outlets around the site to prevent mud from seeping in.

The ceramsite hollow brick should be padded with wood at the bottom and the upper part covered with rainproof material.

The formwork stacking site shall be compacted to prevent collapse due to sinking of the ground.

The backfill is covered with crepe or plastic cloth and is surrounded by drainage facilities.

Materials, equipment and other supplies required for the rainy season, such as pumps, pumping hoses, straw bags, plastic sheets, crepe cloth, etc., are prepared in advance by the materials department and organized in time. Pumps and other equipment should be repaired in advance.

Before the rainy season, carefully check the distribution boxes, gate boxes and temporary brackets of the site, and reinforce them in time. The cover, cover and doors should be filled in time to ensure safe use of electricity.

Scaffolding, people's goods elevators, etc. are well-equipped for lightning protection, and the building's own lightning protection facilities can also be used. The grounding resistance must meet the requirements.

In windy weather, it is necessary to do wind-proof reinforcement measures for large towering objects, and double-cage elevators should be attached to the wall as required.

Basement entrances and exits, pipe trenches, etc. are closed or waterproof.

Strengthen the weather forecast work, prevent sudden attacks from heavy rains, and arrange daily work reasonably.

Temporary drainage channels on the site must be cleared in advance and cleaned regularly. .

c sunny days to send someone to open the window ventilation, in case the indoor moisture is too large.

1) Construction

a concrete construction should be avoided as much as possible on rainy days. Concrete should not be poured during heavy rain and heavy rain, and new concrete should be covered to prevent rain. Waterproof concrete is strictly prohibited from rainy days.

b During the rainy season, when pouring the concrete or the wall concrete, the slump can be adjusted according to the actual situation.

c During the rainy season, the moisture content of sand and stone should be measured at any time. The concrete mix ratio should be adjusted in time to strictly control the water-cement ratio. Pouring concrete on rainy days should reduce the degree of slump and, if necessary, increase the concrete rating by half or one level.

d When pouring concrete, wall and column concrete, the slump can be appropriately reduced. When the beam and slab are poured at the same time, they should be poured along the direction of the secondary beam. If the construction is stopped in case of rain, the construction joint can be left on the secondary beam and the plate to ensure the integrity of the main beam.

2) Steel works

a On-site steel bar stacking should be padded to prevent rusting of steel bars. If possible, the steel bars should be stacked on the steel frame.

b After the rain, the steel bars shall be rust-proofed according to the situation, and the rusted steel bars shall not be used for the structure.

c is to protect the steel bar at the back of the pouring belt, and a brick wall of 120mm width and 200mm height is built on both sides of the post-casting belt, and the prefabricated board is used for sealing, and the prefabricated board is made of waterproof layer and mortar protective layer.

3) Template engineering

a wooden form used in rainy days should be flattened after dismantling to avoid deformation. After the steel formwork is removed, clean it in time, brush the release agent, and brush it again after heavy rain.

b. Cast the concrete as soon as possible after assembling the formwork to prevent the formwork from being deformed by the rain. If the concrete cannot be poured in time after the formwork is assembled and it is drenched by rain, the formwork and support should be re-examined and strengthened before pouring concrete.

c When the large template is grounded, the ground should be solid and firmly supported.

4) Masonry engineering

When it is necessary to build a rainy day, the masonry mortar should be reduced in consistency. Mortar that has been washed away by rain and should be re-grinded with cement. When the rainstorm is stopped, the new masonry should be covered. After heavy rain, if new masonry is rained, the top two blocks should be built.

b To ensure the moisture content of the block, pay close attention to the weather changes. Arrange the block entry time reasonably and try to avoid the rainy days. The blocks should be transported into the floor as much as possible. If it is exposed to rain, it should be properly dried before use to reduce the moisture content and ensure the quality of the masonry.

5) Scaffolding works

All scaffoldings should be thoroughly inspected before the rainy season. The scaffolding pole base must be firm and the grounding rod should be added. The external scaffolding should be firmly connected to the wall.

6) Roofing works

a. The insulation layer must be laid away from rainy days, and the screed and waterproof layer should be made in time to avoid excessive moisture in the insulation layer and affect the thermal insulation effect. If it is raining before waterproofing, it should be covered with insulation or screed. When the construction is continued after the rain, the insulation layer must be sampled to measure the water content, and the water content is less than 9% before construction.

b When the new waterproof coating layer is covered with rain and weather, it should be covered with plastic film and the new waterproof layer should not be washed away. The coil material is waterproof and ready for the work every day.

d roof construction proceeds in the opposite direction of the rainwater flow direction.

7) Decoration construction

a. The rainy season decoration construction should be carefully organized, and the rainy season decoration construction process should be arranged reasonably. According to the principle of combination of sunny, rain, internal and external, the construction will be carried out on sunny days, and the interior decoration will be done on rainy days. Before the exterior decoration work, listen to the weather forecast, confirm that there is no rain before construction, and do not perform exterior decoration work in rainy days. When working indoors in rainy days, operators should be prevented from bringing muddy water into the room to cause pollution. Once the floor of the contaminated building should be cleaned up in time.

b. During the construction of the rainy season, the outdoor doors and windows shall be closed and applied to prevent the rainwater from immersing.

c interior decoration should first secure the doors and windows or take shelter measures. The elevator shaft, stairway, vents and all openings before the structural capping are blocked with plastic cloth and multi-layer boards in rainy days. The water drop pipe must be installed to the end and the elbows should be installed to prevent the rain from polluting the exterior wall decoration.

d For the high-grade exterior decoration that is susceptible to pollution, special protective measures for finished products should be formulated.

e Close the doors and windows before leaving work every day to prevent the rain from damaging the interior decoration and prevent the door and window glass from being blown by the wind.

f All kinds of fear and rain moisture decoration materials should be kept according to materials