Old basement fire pool construction scheme! thank you

Waterproof construction scheme of fire pool

Xx civil air defense evacuation base project is located in the northeast corner of Bailu Lake Ecological Park in Qinghe New District, at the intersection of Hubin Road and Guhekou Street. It is a civil air defense project developed and constructed by the Municipal Civil Air Defense Management Office. With a total construction area of 36,232.36 m, it was designed by China Construction International (Shenzhen) Design Consultant Co., Ltd. and supervised by Nanjing Huantai Supervision Company. This project is a frame structure with one to three floors, and the total building height is 15.75.

The elevation of the bottom of the fire pool in this project is-3.9m, and the concrete is self-waterproof, with C30 strength and S6 impermeability. The basement floor adopts 1.5 thick polyethylene polypropylene polymer coiled material and 40 thick C 15 fine stone concrete protective layer. The basement side wall and roof are made of 1.5 thick polyethylene polypropylene polymer coiled material and 1.20 thick cement mortar to construct a permanent protective wall (the roof protective wall is 60 thick). In order to ensure the waterproof quality of this project, the following construction scheme is formulated:

I. Compilation basis:

1, design drawings.

2. Construction organization design.

3.88JZ9, GFZ Polyethylene Polypropylene Coil Composite Waterproof Atlas.

4. GB18173.1-2006 polymer waterproof material.

5.88J6- 1 Waterproof Atlas of Underground Engineering.

Second, the material selection:

1. polyethylene polypropylene waterproofing membrane.

2. Auxiliary materials: special glue and cement.

3. Re-inspection of incoming materials: for products with the same brand and grade from the same manufacturer, take 5 rolls for products larger than 1000, 4 rolls for 100-499, and 2 rolls for products smaller than 100, and check the specifications, dimensions and appearance quality. The re-examined coil will be cut at a distance of 300㎜ from the outer coil head, and then cut 6544 longitudinally.

4. Materials should be placed indoors after entering the site to avoid rain.

Third, the requirements for the grassroots:

The base surface of waterproof construction shall be solid, flat and smooth, and there shall be no looseness, sand, cracks, cocking, spikes, potholes and hollowing.

Four, waterproof main and auxiliary materials construction requirements:

1. Mortar ratio: the weight ratio of cement to special rubber powder 100 (cement): 1 (rubber powder): 50 (water).

2. Proportioning method: first put the rubber powder into a container, then add the cement and stir. After mixing evenly, add water and stir into paste liquid for use.

3. Play the baseline on the construction base and adjust the coil paving.

4. There should be no open water surface on the base surface. If it is very dry, it is necessary to sprinkle water on the base surface to keep warm.

5. The floor and coil coating should be uniform, and no omission is allowed. After straightening, it should be compacted and leveled.

6. Carry out one-component polyurethane edge sealing at the joint seal.

Verb (abbreviation of verb) Construction and operation of waterproof layer

Construction sequence: first floor, then wall, first additional layer, then large surface, first foundation pit (sump), then floor construction.

5. 1 Construction conditions

(1) The construction temperature of polyethylene polypropylene waterproofing membrane should be above 5℃ and below 25℃. Construction is prohibited in rainy days, snowy days and strong winds of magnitude 5 or above, and rainproof measures should be taken in rainy days during construction.

(2) The leveling layer is qualified. As long as there is no Mingshui under wet conditions, grass-roots construction can be carried out.

5.2 The pasting and laying of polyethylene polypropylene waterproofing membrane shall meet the following requirements:

(1). Determine the direction of coil pasting.

When there is a gradient of 3%, the coiled material can be laid in parallel or vertical gradient.

Requirements: The upper and lower coils shall not be laid vertically.

(2) Before the construction of basement waterproof layer, the nodes, additional layers and the relatively concentrated parts of pile foundation reinforcement should be handled first, and then the construction should start from the lowest elevation.

(3) Before pasting the polyethylene polypropylene waterproofing membrane, reserve the membrane for about 3 to12m at the laying position, find the back and fix it in the middle. Roll one end of the coil to a fixed place, spread glue on it, and after this end is pasted, roll the other end of the coil placed in advance back to the pasting position and paste it continuously until the whole picture.

(4) Glue coating method: First, pour the prepared glue into a small container on the leveling layer at the pre-bonding position. Glue application should be continuous and even, and the thickness should be kept at 1mm, and then the coiled material should be expanded with a scraper to exhaust and compact, and the excess glue should be discharged.

(5) Lapping method is adopted for coil laying, and the lap width of coil is 100mm for both long and short sides. For the lap joint of the upper and lower layers and adjacent two layers of coiled materials, the lap joint of the main waterproof layer and the additional layer is staggered by more than 1/3.

(6) The lap joint of the coil is sticky. After the joint is compacted, brush a layer of cement slurry on the edge of the joint to seal the joint tightly, and it is not allowed to show the bottom, wrinkle, warp or empty drum.

(7) The facade composite coiled material must be pasted vertically, aligned from top to bottom, exhausted and compacted from bottom to top, and the base and coiled material should be glued at the same time, and the coiled material should be filled with glue.

5.3 Handling of Special Parts

(1) coil closing treatment. The end of the coil is the key part of the waterproof layer of the coil, which is easy to open, tilt and fall off if it is not handled well.

(2) Yin and Yang angle processing

At the corner of yin and yang, first reinforce the additional layer, and the width of the additional layer is 500. The first large-scale construction can be carried out only after the acceptance of the additional layer, and the second construction can be carried out only after the first acceptance, and the longitudinal lap joint shall not be less than100; For the hole of the through-wall pipeline, an additional layer should be made first, and then the hole should be cut into four pieces during the bedding construction, and then inserted into the hole for pasting. After the pipeline installation is completed, the gaps around the pipeline should be filled and closed with sealing paste.

5.4 Matters needing attention in pasting and laying coiled materials

(1) The coiled material should be spread immediately after the cement binder is applied, so as to prevent the water loss in the binder from affecting the bonding quality for a long time.

(2) When scraping the coil with a scraper, pay attention to check whether there are hard particles and other substances under the coil to buffer the coil. If there are, take them out and paste them again. Before the laid waterproof layer reaches a certain strength, people should avoid trampling back and forth on it to avoid the coil bulging. After the waterproof layer is qualified, the next working procedure shall be constructed as soon as possible.

(3) The coiled material must be pasted on the leveling layer without wrinkling or warping, and the pasting area is over 85%.

(4) When the construction temperature of the coil is higher than 25℃, the surface of the coil after construction should be cooled by spraying water immediately and covered with curing to prevent the coil from deforming and bulging.

Six, waterproof layer detection test:

The construction of moistureproof layer is completed. Because it is impossible to store water and test water in the basement, we can only pay attention to inspection and deal with doubts in time. After the acceptance of the three parties, brush a layer of cement slurry on the surface of the coil, and then make a waterproof protective layer. The waterproof protective layer of this project adopts 40-thick C 15 fine stone concrete, and the bottom surface is poured with commercial concrete truck pump.

Seven. Arrangement of data:

Provide information such as certificate of conformity, permit (registration certificate), test report, retest report and construction record.

Eight, the construction site management:

1. The construction site must be cleaned after work.

2, the rainy season can't construction, be sure to listen to the weather forecast carefully before construction. If it rains, do it again.

3, construction and inspection personnel shall not wear leather shoes, shoes with nails, in case of damage to the waterproof coiled material.

4, waterproof coiled material in the construction site should be centralized and unified management, take measures such as rain.

5, construction personnel must wear safety helmet.

6. Material stacking place, warehouse and waterproof operation area must be equipped with fire fighting equipment. There are two dry powder fire extinguishers and a sand box in the stacking place and warehouse for fire fighting, and smoking is strictly prohibited in the construction site.

7. Construction workers 8- 10.

8. When pasting the external wall, double-row scaffolding must be erected for the external wall. Scaffolding must be installed firmly, stably and reliably. The scaffold height at each step is 1.5m, and the construction personnel must wear safety belts and safety helmets.

9, waterproof homework personnel after training and examination qualified rear can show certificates; Construction personnel must hold relevant certificates and wear protective equipment (masks, work clothes, work shoes, gloves, safety helmet, etc.). ), and in accordance with the provisions, shall not violate the rules.

10. In and out of the foundation pit, you must take the prescribed ramp ladder; For aerial work, there must be safe and reliable scaffolding, scaffolding should be spread all over and bound firmly, and operators must fasten their seat belts.

1 1. Construction fire must obtain the hot certificate on site;

12. It is forbidden to turn on the lights.

Nine, quality standards

1 guarantee project:

1. 1 The variety, brand and mixture ratio of synthetic polymer coiled materials and cementing materials must meet the design requirements and the provisions of relevant technical specifications and standards.

1.2 details of waterproofing membrane, deformation joints and embedded parts must meet the design requirements and specifications.

1.3 No leakage is allowed in the waterproof layer.

2 basic projects:

2. 1 The base of the coiled material waterproof layer should meet the requirements, be flat and clean, free from sand, empty drum and looseness, and the angle of yin and yang should be at right angles; There is no water in the waterproof layer.

2.2 adhesive coating evenly, can not have brush leakage and defects such as pitting.

2.3 The laying, overlapping and sealing of coiled material waterproof layer shall comply with the design requirements and technical specifications of underground waterproof engineering, and shall be firmly bonded, free from defects such as hollowing, breakage, slippage, warping, blistering and buckling.

X. finished product protection

1 The waterproof layer of coiled material has been laid, and protective measures should be taken in time to prevent damage to machines and tools and construction work.

3 deformation joints, pipes and other waterproof layers should be temporarily blocked before construction. After the waterproof layer is completed, it should be removed to ensure the smooth flow of pipes and tight joints to meet the use function.

4 After the waterproof layer construction is completed, the protective layer shall be made in time.

5 The finished product shall not be polluted during the construction.