A, construction preparation:

1, technical preparation:

1. 1 Before construction, axis measurement should be completed, the drawings should be familiar with, the construction layout should be well made, the construction sections should be divided, the construction flow should be arranged, and the working procedures should be cross-connected.

1.2 Prepare the demand plan for engineering materials, machines and tools, and labor.

1.3 complete witness sampling, inspection and trial matching of materials entering the site for masonry mortar.

1.4 Organize construction personnel to make technical quality, safety production and civilized construction disclosure.

1.5 play axis and wall line, according to the actual size of the approach block, pop up the position line of doors and windows, the experience line meets the design requirements, and complete the pre-inspection procedures.

The design elevation of 1.6 A needs a good number of scales.

2, the main construction machinery and equipment:

2. 1 mortar mixer, tower crane, lifting frame, cutting machine and trolley.

2.2 Main tools: shovel, brick knife, wire support plate, slotted iron sheet, mesh wire, leather pole, ash hopper, brick clip, hose, sieve, iron plate, broom, hand saw, ash head, hanging basket, etc.

2.3 Testing tools: level gauge, guide rule, tape measure, spirit level, thallium wire, ruler, wire support plate and mortar test piece.

3, material preparation:

3. 1 varieties, specifications, strength, bulk density and radioactivity of hollow blocks and bricks. Must comply with the design requirements, specifications should be consistent. Have the factory certificate and test report.

3.2 Generally, 32.5-grade slag portland cement or ordinary portland cement is adopted, with factory certificate and retest report.

3.3 Sand: Medium sand should be used and pass through a sieve with 5 mm aperture. The silt content of sand should not exceed 5%, and it does not contain impurities such as grassroots mud.

3.4 Admixtures: Lime should be fully cured, and dehydrated and hardened lime paste is prohibited.

3.5 Water: tap water or clean water without harmful substances.

3.6 Other materials: Rachel steel bars, embedded parts and wooden bricks.

4. Operating conditions:

4. 1 The frame part in the main division has been completed, and the garbage has been cleared.

4.2 Axis, wall line, door and window opening line and elevation line have been played well.

4.3 The Rachel bars on the construction surface have been planted and passed the inspection.

4.4。 In normal temperature weather, water and wet the day before laying.

4.5 The mixture ratio of mortar has been determined by the laboratory, and the trial mould is ready.

Second, the construction operation process:

1, process flow chart:

Inspection and acceptance

Brick arrangement and bottom placement

Masonry wall

Homework preparation

Mortar mixing

2, the construction operation requirements:

2. 1 Before laying, the ground should be cleaned and watered.

2.2 According to the size of each part of the design drawing, the brick arrangement and dumping should be reasonable and easy to operate.

2.3 mixing mortar:

2.3. 1 Mortar mixture ratio: 2% cement, 5% sand and admixture by weight.

2.3.2 Mortar should be used with mixing, and cement should be used up within 3 ~ 4h after mixing. Overnight mortar is strictly prohibited.

2.3.3 A set of test blocks must be made for mortar of various strength grades of floor slab or 250M3 masonry. When the mortar material and mixture ratio are clear, test blocks should be added.

2.4 Masonry wall:

2.4. 1 The masonry method should be correct, and the masonry should be "aligned with holes and staggered joints", and the masonry operation should adopt the "three-in-one" masonry method, that is, "one shovel of ash, one brick and one extrusion".

2.4.2 The horizontal mortar joint shall be dug to within 15MM, and the mortar shall be full, straight and smooth, and the main joint shall be filled with mortar.

2.4.3 Block should be laid with 30CM high solid brick on the ground or floor. Under the main beam or floor of hollow brick wall, solid brick can be used to build by laying bricks or stones obliquely and compacted with mortar. The inclined brick can be laid in 7 days, and the mortar can be hardened and precipitated.

2.4.4 Set constructional column and ring beam according to the design requirements, and add constructional column when the doorway exceeds 2. 1 m..

2.4.5 Both sides of the door window frame are built with solid bricks.

2.4.6 When laying the pull-through line, build by laying bricks or stones, hang and lean to ensure that the wall surface is vertical and flat, and it is not allowed to smash bricks to repair the wall.

2.5 Quality problems that should be paid attention to:

2.5. 1 Be careful not to use expired cement, the lecturer should be accurate, and ensure that the mixing time, mortar, production and maintenance of test blocks should comply with the regulations.

2.5.2 The corner and junction of masonry shall be built at the same time. If it can't be built at the same time, the oblique difference should be kept, and the horizontal projection length of the oblique difference should not be less than 2/3 of the height.

2.5.3 The holes for temporary construction personnel shall be left on the wall, with the lateral distance from the junction wall not less than 500MM and the hole width not more than 1M, and the temporary construction holes shall be repaired.

2.5.4 When laying, the pipes and grooves at the mouth of the cave should be reserved and embedded correctly.

2.5.5 When building a block, the strength of the block should be greater than 28 days.

2.5.6 In the process of transportation, loading and unloading, it is forbidden to throw and dump stones. After the blocks enter the site, they shall be neatly stacked according to the varieties and specifications, and the stacking height shall not exceed1.5m.

2.5.7 When binding and planting rebar, there should be enough anchoring depth. First of all, we must calculate the position and accurately control the position and elevation. Rachel bars should not be used.

Third, the quality standard:

3. 1 master control project:

3. 1. 1 The variety, specification and strength of the block must meet the design requirements, with the factory certificate and test report.

3. 1.2 mortar varieties must meet the design requirements, and the strength must meet the following requirements:

A, the average strength of each test block of mortar of the same variety and strength grade is not less than fmk (design strength).

B, the strength of any group of test blocks is not less than 0.75mk (design strength).

3. 1.3 The horizontal mortar joint of hollow masonry is full, and the vertical joint is densely filled.

3. 1.4 It is forbidden to keep straight rubbing at corners and junctions, and other parts should also keep oblique rubbing.

3.2 General items:

3.2. 1 Allowable deviation items of general dimensions of infilled wall masonry shall meet the requirements of table 1:

Allowable deviation of general dimensions of infilled wall masonry

Inspection method of allowable deviation (mm) of the project

1 10 theodolite or stay ruler quantity inspection.

low

straight

Degree is less than or equal to 3 m5. Check with 2M support plate or messenger wire and ruler.

More than 3M 10

2 Plane flatness 8 Check with 2M guide rule and feeler gauge.

3. Check the height and width of the door and window openings by 5 feet (rear plug).

4. Deviation of upper and lower windows of external wall is 20. Check with theodolite or hanging oblique ruler.

Sampling quantity: Items 1.2 in the table are randomly sampled in the standard room of the inspection lot, and the number is not less than 3. Large-area rooms and corridors shall be regarded as a standard room according to two axes or every 10 linear meter, and there shall be no less than 3 inspections in each room. The item 10 in the table shall be randomly selected from the inspection lot, but not less than 5.

3.2.2 Mortar plumpness and inspection method of infilled wall masonry meet the requirements in the table below.

Mortar plumpness of infilled wall masonry and its inspection method

Saturation of mortar joint in masonry classification and its inspection method

The moisture content of hollow brick masonry is more than or equal to 80%. Check the bonding trace area of mortar at the bottom of the block with stone grating.

Mortar filled vertical straight, can not have transparent seam, kerf, false seam.

The moisture content of aerated concrete block and light slip concrete small block masonry is ≥80%.

Vertical ≥ 80%

Sampling quantity: not less than 3 in each step, but not less than 3 pieces in each step.

3.2.3 The position of Rachel reinforcement or barbed wire to fill the wall allowance shall be consistent with the number of skins. Pulled steel bars or cables shall be placed in mortar joints, and the embedded length shall meet the design requirements, and the vertical position deviation shall not exceed one skin high.

Sampling quantity: 20% of the inspection lot shall be sampled, but not less than 5 places.

3.2.4 When laying the infilled wall, the masonry shall be staggered, and the vertical mortar joint shall not exceed 2 skins.

Sampling quantity: 10% of the standard room of the inspection lot, but not less than 3 rooms.

Inspection method: visual inspection and ruler inspection.

3.2.5 The thickness and width of mortar joint of infilled wall masonry shall be correct, and the thickness of mortar joint shall be between 8 ~ 15.

Fourth, finished product protection:

4. 1 Pay attention to protect the Rachel reinforcement embedded in the wall column, and don't bend or cut it at will.

4.2 HVAC: Electrical pipelines and embedded parts should be protected to prevent collision damage.

4.3 Rachel reinforcement and structural reinforcement buried in masonry shall be protected and shall not be bent at will.

4.4 The car should run smoothly to prevent collision with the wall.

4.5 Scaffolding shall not be erected on the filled wall to prevent accidents.

Verb (abbreviation for verb) Safety and environmental protection measures:

5. 1 Safety measures:

5. 1. 1 Before operation, check whether the scaffolding and scaffolding are firm, whether there is jumping blindly, and whether the working environment is unobstructed. If unsafe factors are found, the construction can only be started after the treatment meets the safety requirements.

5. 1.2 Material placement

A. When stacking materials on the ground, the distance between the materials and the edges of holes and pits should be greater than 1cm, and the stacking height of bricks should not exceed1.2m..

B, when laying bricks on the scaffold, the height of the bricks on the scaffold shall not exceed three layers of edge bricks, and mortar and bricks shall be placed at intervals.

C, when unloading stacked blocks on the floor, it is forbidden to dump and hit the floor, and the weight of stacked materials cannot exceed the design bearing capacity of the floor. Temporary support measures should be taken under the floor at the entrance of the construction layer.

5. 1.3 scaffolding shall not be used without inspection and acceptance, and the scaffolding after inspection and acceptance shall not be dismantled and changed at will and fly on its own; Scaffolding ramps must be nailed with anti-skid strips.

5. 1.4 All mechanical equipment used shall be operated by special personnel, and other personnel shall not operate it to prevent accidents.

5. 1.5 The lifting capacity of vertical transportation tools should be strictly limited. Check the cage, pulley, brake and rope carefully before use. Vertical transportation machinery should have a unified, clear and reliable contact signal. When lifting, no one is allowed to stand below the rotating range of the lifting piece.

5. 1.6 aerial work personnel shall have a physical examination in advance, and those who fail shall not work at altitude; Wear safety belts and non-slip shoes when working at height, and stop working at height when there is strong wind or fog above level 6. Do not do your homework after drinking.

5.2 Environmental protection measures:

5.2. 1 Comply with relevant regulations of Guiyang on environmental sanitation and city appearance management.

5.2.2 Masonry works must be carried out after the project is completed.

5.2.3 The construction operation surface shall be continuously wetted with water to reduce dust pollution.

5.2.4 Mixing sewage is precipitated and discharged into the designated place.

5.2.5 Masonry residues and other construction wastes shall be piled up and removed.

Defendant's Supplement 2009-09- 17 14:20

Compilation basis

Basis: Code for Acceptance of Masonry Engineering (GB50203-2002)

Technical specification for perforated brick masonry structure JGJ 137-200 1

Atlas of frame lightweight infilled wall structure

Reinforced concrete lintel 03g322- 1

Decoration engineering construction drawings

Project overview

The 1 brick masonry of this project is mainly an indoor enclosure structure, and does not bear any load except its own weight.

2 The masonry of this project adopts concrete aerated block, with specifications of 600× 180×200 and strength grade of A 10. The matching bricks of the wall are matched according to the actual situation on site to ensure the reasonable and compact masonry of different types of bricks at the junction of the wall.

3. Quality objective: the excellent and good rate of sub-projects is ≥ 85%;

4. Duration: Optimize the construction organization design and strive to complete the construction task ahead of schedule;

5. Civilized management objectives: elaborate organization, scientific management, erection of site overlay in strict accordance with the general plan, civilized construction, and striving for civilized and standardized production;

6. Safety objective: put an end to industrial accidents, with the serious injury rate of 1,000 people ≤0.3, the injury rate of 1,000 people ≤5.4 and the violation rate of 1,000 people ≤ 9;

7 Quality policy: adhere to the quality policy of "emphasizing contract, ensuring quality and excellent service, providing satisfactory building products for owners", carry forward the spirit of enterprise, strictly implement the quality system documents issued by enterprises, fully fulfill the project contract, organize construction with high quality, high speed, safety and civilization to ensure the project quality;

Second, the construction preparation

1 This subdivisional work consists of the builder and the team leader.

2 construction schedule:

A. This sub-item shall be constructed according to the total construction period;

B according to the floor arrangement flow construction;

C masonry structure construction plan for 3 days;

3. Material requirements

1 sand: medium-coarse river sand shall be used as the sand, which shall not contain grass and other sundries, and the silt content of the sand shall not exceed 5%;

2 water: tap water.

3 Admixtures: The dosage should be determined through experiments.

4 before cement comes into play, its strength and stability shall be reinspected according to regulations; Different varieties of cement shall not be mixed; Only after having the certificate of approval and passing the inspection can the construction be started.

5 brick approach should have a certificate of approval, and sampling inspection according to the specification requirements; The variety and strength grade of bricks must meet the design requirements, and the specifications should be consistent.

6 The mixture ratio of masonry mortar should be determined after the test, and it should be strictly and accurately weighed during construction to ensure the strength of mortar. The mixture ratio is the weight ratio, and it is hung in a conspicuous place near the mixing place with a signboard.

Masonry method of four-sided brick wall

When arranging 1 blocks, the number and arrangement of blocks must be calculated according to the design drawings, block size, vertical mortar joint width and horizontal mortar joint thickness to ensure the masonry size. Before laying, the axis and sideline of the wall should be popped up according to the position of the brick wall. When laying, the width of mortar joint should be released first. When laying bricks, we should pay attention to the position of doors and windows, the influence of brick stacks on mortar joints, the masonry method of the wall between windows, and where to build seven bricks and a half bricks to ensure that the vertical joints of each brick are staggered.

2 block arrangement should be carried out according to the design requirements, and mixing with other wall materials should be avoided when building external walls.

3 when arranging, try to use the main specifications, large specifications and standard specifications produced by our factory, and use less or no special-shaped specifications.

4 corner and vertical and horizontal wall junction block should be divided into skin bite, staggered joints build by laying bricks or stones.

5 The upper and lower skin blocks of masonry should be staggered and laid, and the lap length should not be less than 1/3 of the block length.

6 the vertical seam of masonry and the edge of the window should avoid the same seam.

7 Where doors, windows or other components need to be fixed in masonry and lintels and shelves are put aside, large-area and regular block masonry should be adopted as far as possible, and sporadic block masonry should not be used.

8 before laying, should be placed test. If there are not enough bricks and there is no half-brick specification, ordinary clay bricks can be used to fill them.

9 The contact surface between the top surface of masonry wall and the superstructure shall be extruded by side bricks or vertical bricks. After the brick wall is paved for a period of time, most of the bricks are paved, and then the inclined bricks at the top are paved.

10 before masonry construction, the basement should be cleaned first. Brick masonry assembly method should be correct, staggered joints, mortar joint thickness of 8- 12mm, horizontal and vertical, uniform thickness. The mortar joint is full, and the fullness of horizontal joint is ≥80%. There shall be no transparent seam, blind seam or false seam in the vertical seam. Especially for external walls, mortar joints must be full to prevent water seepage in the future. At the same time, Ф 8 steel bars should be used to hook the mortar joint to keep it smooth and dense.

Bricks 1 1 should be watered and wetted 1-2 days in advance. When the brick comes into play, the specifications and dimensions are obviously out of tolerance, so the material should be changed.

12 aluminum alloy or plastic steel doors and windows are connected and fixed with C20 precast concrete blocks, and the concrete blocks are 180mm away from the ends of doors and windows from top to bottom, and the middle spacing is not more than 400 mm ..

13 wooden doors and walls can be fixed with embedded wooden bricks, with four wall connection points on each side, in which the connection points of upper and lower walls are 180mm away from the door end, evenly arranged in the middle, and the wooden bricks are treated with asphalt oil for anticorrosion;

14 lintels of doors and windows are constructed by cast-in-place method. Only when the mortar strength of mortar joint exceeds 50% of the design strength can the formwork at the bottom of lintels be removed.

15 wall Rachel reinforcement is φ6, spacing is 500, and the length conforms to the specifications. Bored steel bars, steel bar connecting belts, lintels at door openings, main reinforcement of constructional column 4φ 14, stirrup φ 6 @ 200 are used for connection with the wall, and the combination of rebar planting, welding and binding is adopted, with concrete grade C20. Specific operations shall be carried out in accordance with Atlas of Frame Lightweight Filled Wall Structure.

Wall brace, constructional column and wall beam reinforcement shall have material certificate, re-inspection report and concealed acceptance record.

16 when repairing the temporary discontinuity in brick masonry construction, try to leave an oblique if, if it is impossible to leave an oblique if, leave a straight if. If the surface should be clean, water wet, and filled with mortar, keep the mortar joint straight.

17 Before pouring constructional column concrete, the brick masonry and formwork must be watered and wet, and the floor ash and brick slag in the formwork must be removed.

18 The joint between the constructional column and the wall should be built into a horse tooth, and the horse tooth should step back first.

When the wall of 19 is laid near the bottom of beam and slab, there should be a certain gap. After 7 days of brick wall settlement, build by laying bricks or stones and extrusion are carried out to complete the last skin brick to prevent cracks at the bottom of beam caused by masonry settlement.

19 When the wall is longer than 5m or the wall height is greater than 4m, constructional columns and wall beams shall be set according to the specifications.

20 The allowable deviation of general dimensions of infilled wall masonry in this project:

Inspection method of allowable deviation (mm) of the project

1 axial displacement 10 Check with a ruler.

2 verticality is less than or equal to 3m 5. Check with 2m wire support plate or messenger wire and ruler.

More than 3m 10

3 Surface flatness 8 is checked with 2m guiding rule and wedge feeler gauge.

4. Check the height and width of door and window openings (rear plugs) with a ruler.

Five-wall structure requirements:

1 The filler wall shall be provided with constructional columns at the following positions:

Corner of partition a

B. end of partition wall;

C doors and windows hole edge;

D the width of the wall between windows is ≥4.2m, in the middle of the wall;

E stairwell, around the masonry elevator shaft;

F the parts shown in the figure.

2 The width of the constructional column is the same as that of the wall, the cross section of the constructional column is 200mm high, and the protective layer of the constructional column is 20mm thick, and not less than 15mm.

3. The weight of partition wall built on the floor shall not be greater than 1KN/ m2 (including decoration).

Six items that should be paid attention to when laying:

1 During construction, the wall shall be built first, and then the constructional column concrete shall be poured. The particle size of constructional column concrete aggregate should not be greater than 20mm, and the slump of concrete should be 50-70 mm ..

2 When the wall masonry height exceeds 1.2m, scaffolding shall be erected.

3. The stacking amount on the scaffold shall not exceed the specified load, the stacking height of bricks shall not exceed 3 leather side bricks, and the operators on the same scaffold shall not exceed 2 people.

4 During ground construction, the stacking of machines, bricks and other items shall not exceed the service load.

5 unstable tools or objects are not allowed to be used to improve the scaffolding, and a layer is not allowed to be piled on the unreinforced scaffold.

6 when cutting bricks, face inward, and pay attention to the broken bricks jumping out to hurt people.

Seven corresponding measures

1 In order to ensure the construction period, all construction site managers live in the construction site to solve possible problems at any time, and all managers establish a duty system outside normal working hours.

2 Establish a production meeting system, hold regular production scheduling meetings, check the implementation of the plan since the last meeting, arrange the plan before the next meeting, find out the reasons for delaying the progress, and take effective measures in time to ensure the completion of the plan.

3. During the construction, according to the schedule control, grasp the leading work, find key contradictions, reasonably arrange the construction procedures, organize cross-flow operation, do a good job in labor organization, mobilization and coordination, and ensure the realization of the total time limit for a project through the realization of the time limit for each control point.

4. Concealed acceptance system: All concealed acceptance works shall be inspected by the foreman first, and the quality inspector and supervisor can be notified for inspection only after passing the inspection. Concealed works should be true and reliable, and the data clearly reflect concealed works. The contents of concealed works shall be carefully filled in by the foreman and signed by the site supervisor. Concealed works shall be handled in time.

5. Technical review system: the technical review is organized by the foreman, attended by the quality inspector and the team leader, and carried out in combination with the quality evaluation of sub-projects.

6 Mortar test blocks shall be made according to the requirements of "Specifications" to ensure that the data reflected by the test blocks are representative on site.

7. Technical disclosure system: Before construction, all levels of technical disclosure should be organized, including technical disclosure by project engineers to foreman, technical disclosure by foreman to team leader, and technical disclosure by team leader to operation team. Disclosure at all levels shall be made orally and recorded in writing. Investigate the quality accidents caused by improper technical measures or unclear disclosure.

Strictly implement the "three inspection system", and the next working procedure can only be carried out after the previous working procedure is qualified.

9 carefully close the materials, do a good job of raw material inspection and finished product protection. All kinds of materials must have quality certificates when they enter the site, and they shall be re-examined in time according to the specified requirements. Only after passing the second interview can it be formally applied to engineering construction.

Requirements and measures for safety and civilization

1 Education in place: (1) New workers must receive entrance education and tertiary education, and sign a personal safety production responsibility contract. 2, the foreman (the builder) in the construction task at the same time of safety protection and targeted safety operation procedures, matters needing attention to conduct a comprehensive safety technical disclosure, disclosure both sides to perform the signing formalities. (3), the team leader to do a good job in pre-shift activities, the implementation of personal responsibility system for production safety.

2 Responsibility in place: At the production coordination meeting, the builder must report the safety production situation of the responsible section while reporting the work; Safety personnel must report the daily on-site inspection and implement the "three treasures" rectification of hidden dangers.

3 During masonry construction, the stacking load of floor slab and roof shall not exceed the allowable load value of floor slab.

4 you must wear a helmet when entering the site, and you must wear a seat belt when working high above the ground. It is forbidden to work after drinking and wear slippers to enter the site.

5. All temporary electricity, power and lighting on the site are made of flexible rubber cables, which are connected by maintenance electricians. It is strictly forbidden for other personnel to pull wires indiscriminately, and all distribution boxes are managed by safety distribution boxes. When using electric tools, there must be a leakage protection device and a good grounding.

6 When the strong light is temporarily used in the construction site, it must be fixed on a wooden frame or wall frame more than 3 meters. If you must drag it to the ground, the strong light that needs to be moved frequently must be stable, and the iron shell and handle should have good insulation devices. The surface of glass bulb should be equipped with lead wire protective cover and good grounding device.

7 When using the "A" escalator, the foot of the escalator must be wrapped with rubber, and a chain or rope should be tied in the middle. Keep it steady when using it. When the escalator goes up and down, the pulley should be prevented from breaking and falling, and the elevation angle should not be less than 60 degrees.

Before coming off work, the power switch must be turned off to make all kinds of machinery in a state of no power supply. In the area where hot work was carried out that day, check the residual fire after work, and leave the site when there is no problem.

9. Keep the construction site clean and tidy, clear the construction garbage and waste to the designated place for stacking in time, and clean up the site after work to ensure the cleanliness of the construction site and smooth construction roads.

10 pays special attention to the propaganda and implementation of civilized construction, educates employees to consciously abide by the provisions of civilized construction, and carries out mass activities to create civilized construction sites.

1 1 Abide by the regulations of Wuhan Municipality on city appearance and environmental sanitation, and strengthen the management of civilized construction on site in accordance with the Detailed Rules for Civilized Construction on Site.

12 "three furnaces" (electric furnace, electric furnace and kerosene furnace) are strictly prohibited.