Construction technology hand-over book
Project name Professional site: civil engineering team: concrete classNo.:
Project name Wall plastering disclosure time 212-3-26
Disclosure moderator.
person in charge of construction at the site of disclosure
Scope and quantity of construction:
This project is the construction project of centralized control building (No.1 and No.2 units), with a total construction area of about 6494.28m2.
All external walls: dull acrylic external walls;
interior wall: drug storage room, chemical dosing room, condensate treatment room and battery room are made of GFVC anticorrosive paint (1 thick anticorrosive mortar surface layer, three times);
the diesel generator room, each power distribution room, clean gas fire fighting room, CO2 gas cylinder room, hall, corridor, staircase DC UPS room, electronic equipment room, cable interlayer and air conditioning room are functional synthetic resin emulsion walls (combustion performance grade: A);
the centralized control building is made of metal wallboard (aluminum plate, height 36mm, combustion performance grade: A);
All other rooms have common latex paint walls.
Construction scheme, operation procedures and methods:
1. Material preparation;
Calculate the quantity of materials needed for plastering according to the architectural drawings of the construction centralized control building, put forward the date of material entry in advance, and organize the material entry in stages according to the plan of providing materials.
2. Prepare machines and tools;
prepare mechanical equipment and plastering tools according to engineering characteristics and plastering engineering categories, erect vertical transportation equipment and indoor and outdoor scaffolding, and connect water and power.
3. Prepare before construction;
3.1 Before plastering, the protruding part of the concrete surface of lintel and constructional column grade should be leveled, and the looseness should be removed if there is honeycomb and pockmarked surface treatment, and it should be leveled with 1:3 cement mortar layer by layer.
3.2 Clean up the dust, residual wood and hanging dirt on the wall before plastering
3.3 Water and wet the wall 24 hours in advance before plastering.
4. Plastering construction practices;
4.1 general plastering grade practice;
4.1.1 Ordinary plastering: find the square of the external angle, set the standard reinforcement, flatten and trim in layers, and polish the surface.
4.1.2 Advanced plastering: find the square of the internal angle, set the standard reinforcement, flatten and trim in layers, and polish the surface.
4.2 Average total thickness of plastering;
4.2.1 ceiling: the plastering of slats and cast-in-place concrete ceilings is 15mm; Precast concrete ceiling plastering is 18mm; The plastering of the metal mesh ceiling is 2mm.
4.2.2 Interior wall: 18mm for ordinary plastering; Intermediate plastering is 2mm; Advanced plastering is 25mm.
4.2.3 External wall: 2mm for wall surface and 25mm for protruding wall surface.
4.2.4 Stone wall: 35mm
plastering cement mortar, and the appropriate thickness for each pass is 5~7mm; Cement mixed mortar and lime mortar should be daubed with a thickness of 7~9mm each time. The plastering layer of cement mortar and cement mixed mortar can only be daubed with the last layer after the previous layer is solidified, and the plastering layer of lime mortar can only be daubed with the last layer after the previous layer is 7 ~ 8% dry.
The thickness of the surface plastering after leveling and compaction: the hemp-knife lime stone should not be greater than 3mm; Paper-reinforced lime and lime paste shall not be greater than 2mm.
Smooth concrete interior wall and floor slab bottom (referring to the prefabricated whole building slab) need not be plastered, and should be leveled with putty, with a total thickness of 2~3mm.
5. Key points of wall plastering;
5.1 Before plastering, you must find good rules, that is, square corners, leveling horizontal lines, erecting vertical lines, popping out +2.M alignment lines for each column section, skirting lines and skirting lines.
5.2 According to the architectural drawings of the centralized control building, 1: 3 cement mortar shall be used to protect the feet of the internal wall (including the door opening). The width is 5 minutes and plastered twice. If there is no special requirement, generally, 1: 2 cement mortar can be plastered out to protect the feet, and the width of the feet should not be less than 2.M, and the width of each side should not be less than 5 mm. < P > 5.3 When the base layer is concreted, the plain cement slurry should be scraped first before plastering. When plastering lime mortar at the base of aerated concrete or fly ash block, it is advisable to sprinkle water first, and the amount of water should be 8~1mm deep into the block, and the water should be done the day before plastering, but the wall surface will not float when plastering. Immediately after watering, brush a solution of 18 glue: water = 1: 5. When plastering mortar, brush a cement slurry of 18 glue (the dosage is 1%~15% of the cement weight) first.
5.4 the strength of bottom ash plastered on aerated concrete base should be close to that of aerated concrete, and the mixture ratio of middle ash
should be basically the same as that of bottom ash. Coarse sand should be used for bottom ash, and medium sand should be used for middle ash and surface ash.
5.5 when cement mortar is used as the surface course, the surface of the base ash shall be brushed or scratched, and the surface course shall be rubbed, and the surface shall be calendered not less than twice, and the surface shall be watered the next day after finishing. Before setting, the plastering layer shall be protected from quick drying, water flushing, impact and vibration.
5.6 the coating of paper reinforcement ash or hemp fiber ash should be carried out when the base ash is 5-6. If the base ash is too dry, it should be watered and wetted first, and the coating should be compacted and polished twice.
5.7 when plastering the external corner of the wall, first drop the guiding rule on one side of the corner to find it straight, and then apply mortar along the guiding rule on the other side of the corner.
5.8 indoor dado and skirting board are generally 3-5mm more prominent than the gray wall surface, and they should be put on the line according to the height, and the eight-character guiding rule should be cut on the line with an iron trowel, and trimmed and cleaned.
5.9. The plastering of the walls behind skirting boards, door and window plastering boards, hanging mirror lines, radiators and dense pipes should be carried out before their installation, and the plastering surfaces should be smooth and smooth.
5.1 The windowsill, window sill, awning, balcony, coping and protruding waistline of the external wall should be sloped with running water, and the drip line or drip tank should be made below. The depth and width of the drip tank should not be less than 1mm and should be uniform.
6. Precautions for plastering in winter
6.1 Thermal insulation measures should be taken for plastering in winter. When plastering, the temperature of mortar should not be lower than 5 C.. When the temperature reaches C, it is not suitable for plastering in winter.
6.2. Mortar plastering layer should not be frozen at the initial stage of hardening: when the temperature is lower than 5℃, plastering should not be done outdoors. Do paint or paint wall plastering layer, shall not be mixed with salt and calcium chloride.
6.3 For the wall built by freezing method, outdoor plastering shall be carried out after it is completely thawed; Indoor plastering shall be started only after the inner wall is thawed. Do not use hot water to flush the frozen wall or use hot water to eliminate the frost on the wall.
design changes, Substitution of equipment and materials:
quality standards and quality assurance measures:
1. Code for acceptance of construction quality of building foundation engineering (GB 522-22)
2. Standard for inspection and evaluation of thermal power construction quality (civil engineering chapter I) (DL59.1-22)
3. Shaanxi Non-ferrous Yulin New Materials Co., Ltd. 5×33MW electric power facilities project A bid construction organization design
4. Safety work regulations for electric power construction (part of thermal power plant)
5. Technical regulations for the use of construction machinery (JGJ 33-21)
6. Technical regulations for the application of cement grouting materials (GB/T 5448-28) < Code for construction and acceptance of concrete structure engineering (GB 524-22)
8. Foundation soil of centralized control building (F3851S-T333)
9. Structural drawings of centralized control building (F3851S-T3171, F3851S-T3172)
1. To participate in the construction, you must read the drawings and relevant technical data in detail.
Guarantee measures for safe and civilized construction and requirements for occupational health and environmental protection:
1. Guarantee measures for construction safety
1.1 Full-time security officers shall be set up at the site to regularly check the operation safety of personnel, lines and equipment, and solve problems in time when found.
1.2 the construction passage should be kept unobstructed at any time, and protective railings should be erected on the outside to prevent falling objects from hurting people.
1.3 isolation railings should be erected in the construction area to separate the areas, so as to prevent personnel from escaping into the area.
1.4 don't drink alcohol during work, and don't enter the construction site after drinking.
1.5 the construction personnel must wear safety helmets, and the vertical height of the operation surface exceeds 2.m, and the safety belt must be fastened.
1.6 there shall be no old, weak, sick or disabled among the construction personnel, and they shall be resolutely removed if found.
1.7 special professionals must hold relevant certificates, and may not carry out work unrelated to this type of work.
1.8 when pumping and moving the pipe, inform the pump driver in advance to turn off the concrete pump first, then move the pipe and lean on the pump pipe rack, and there should be a special person to hold the pipe.
1.9 the person commanding the vehicle to enter and leave should pay attention to the safety of pedestrians, cyclists and passing vehicles.
2. Use of construction machinery
Implement strict mechanical safety management system. Construction machinery, tools and electrical equipment used shall be checked and accepted according to regulations before being put into use. Only those in good condition and safe operation can be put into use after acceptance. All mechanical operators must hold relevant certificates after passing the training, and re-check on schedule. During construction, designate a special person to be responsible for the inspection, maintenance and maintenance of mechanical equipment to ensure its intact rate, utilization rate and safe operation.
3. On-site electricity safety
3.1 Each electrical equipment shall be provided with switch and fuse insurance. It is strictly forbidden to have more than one switch, and all kinds of electrical equipment shall be protected by zero connection or grounding.
3.2 all mobile equipment and hand-held power tools are equipped with leakage protection devices in the distribution box.
3.3 the lighting circuit shall be erected according to the standard, and it is forbidden to use a live wire and a ground wire, and the protective grounding shall not be used as the lighting zero line.
3.4 The electrode holder is provided with reliable insulation. Simple electrode holder without insulation and electrode holder with damaged insulation handle are not allowed.
3.5 when working in a narrow space or on a metal frame, an insulating gasket is provided to insulate the welder from the weldment.
3.6 it is forbidden for non-professionals to operate mechanical and electrical equipment. If someone gets an electric shock during the construction, don't pull it by hand, and cut off the power supply immediately.
3.7 in the power system where the special neutral point is directly grounded at the construction site, the neutral protection system must be adopted, and the shell of electrical equipment must be connected with the special protection zero line. Not in the same power supply system, some are grounded and some are connected to zero.
3.8 wires shall be erected according to standards. Do not tie wires to steel bars, trees and scaffolding without porcelain bottles; Open-air knife switches are installed in special distribution boxes, and iron wires or other wires are not allowed to replace fuses.
3.9 when using high-temperature lamps and lanterns, the distance from flammable materials shall not be less than 1m, and the distance from ordinary light bulbs to flammable materials shall not be less than 5cm.
3.1 Mobile electric machinery and equipment are powered by rubber cables, and always pay attention to straightening them out; When crossing the road, bury it underground or wear a pipe for protection.
3.11 vibrating equipment adopts four-core rubber cord and is well grounded. It is operated by special personnel, and the operators wear insulating gloves. It is forbidden to put the open vibrator on the template or solidified concrete.
3.12 to ensure adequate lighting at night, consider setting two dysprosium lamps and one iodine tungsten lamp on the ground and at least four iodine tungsten lamp lamps on the operation surface.
3.13 the electrician on duty should stay at the construction site, and shall not slip away or take off his post.
4. Guarantee measures for civilized construction
4.1 A leading group for civilized construction was set up at the site, with unified command and coordination, and specific management measures were formulated in combination with the actual situation of the site, so as to improve safety protection and fire control facilities and do a good job in safety defense.
4.2 Strictly implement standardized management of building construction
4.3 During construction, in order to standardize the site capacity and strengthen the management of civilized construction, this project should:
a) establish corresponding rules and regulations to standardize civilized construction of the project.
b) ensure that materials are stacked neatly and orderly on the construction site.
c) Arrange the construction work area reasonably, so as to make the layout orderly, clean and civilized, and not affect each other, and list the clean and sanitary responsibility areas that each team is responsible for.
d) Carry out the education of "leaving hands behind" on site, so as to ensure that the work is finished, the materials are exhausted, and the site is cleared, and organize regular inspection of the implementation, and correct the problems in time if found, so as to keep the whole construction site clean and standardized.
technical record content, witness and visa requirements:
1. Construction records such as Construction Log, Concrete Pouring Record, Concrete Maintenance Record, Concrete Mixing Record and Construction Measurement Record, as well as technical records such as inspection lot and acceptance records of each division and subdivisional work must be made.
2. If the basement soil or other aspects do not conform to the design and need to be changed or approved, the procedures for change or technical approval must be handled in time, and the economic visa must be handled in time.
Other construction precautions:
Standardize the construction in strict accordance with the contents of safety disclosure, so as to prevent any major or minor safety accidents.
signature of the person who participated in the construction technical disclosure (I have understood and mastered the contents of the construction technical disclosure, and agreed to carry out the construction according to the contents of the disclosure):
Compiler/Date: Approver/Date:
Description:
1. The construction technical disclosure is made in quadruplicate, one for the technical disclosure person and the person in charge of the construction, and two for the Engineering Department (original).
2. All columns must be filled in: if the column content cannot be filled in, an additional page can be attached.
3. All construction personnel participating in this project must participate in technical disclosure, and all personnel participating in technical disclosure must sign.