Garden construction organization design?

What is the organizational design of garden construction? What are the characteristics? The following is an introduction to the main contents of garden construction organization design brought by Zhongda Consulting for reference.

1． Project Overview

This project is a greening project covering an area of ??** square meters. The project was constructed by ** Company, ** designed, ** constructed, and ** Supervision Company was responsible for supervision.

1-2． Construction Conditions

All kinds of debris in the construction site of this project have not been cleared away. Water and electricity have been connected to the site. The conditions of "three connections and one leveling" are not met. There are many cross-construction projects with other construction units, so they need to be cleaned up at the same time. Work on-site and coordinate construction with other construction units.

1-3． Quality Objective

The quality objective of this project is to ensure excellence and strive to create a quality project.

2． Construction deployment

2-1. Division of construction stages

The construction workload of this project is large and the construction period is tight. To complete it on time and with high quality, it must be carefully coordinated, reasonably arranged, three-dimensional crossing, and streamlined. This project is planned to be divided into civil engineering, water and electricity installation engineering, seedling planting, garden sketches, road paving and ancillary engineering.

2-2． Construction period

Planned start date: year month day

Planned completion date: year month day

Total calendar construction period: days

3 ． Construction preparations

3-1. Technical preparation

3-1-1 Arrange technical personnel to familiarize themselves with the drawings and conduct joint review of the drawings.

3-1-2 Arrange the progress plan and construction organization design according to the engineering quantity and construction period requirements of the drawings.

3-1-3 Overhaul measuring instruments and propose early labor and material plans.

3-2. Temporary construction plan

3-2-1 Within Party A's ability, Party A will be provided with 2 temporary construction offices, 2 material warehouses, and 3 houses. If there are difficulties, the houses will be rented out.

3-3. Labor force plan

6 concrete workers

30 general workers

6 mechanics

2 electricians

10 people for bricklayers

10 people for other types of work

Total 64 people

The above are workers during peak periods and can be adjusted according to actual conditions during construction.

3-4． List of construction agency personnel (see attached table for details)

3-5. Construction electricity consumption plan

1 concrete mixer, 35kw

1 mortar machine, 3kw

2 frog tamping machines, 6kw

P=1.1×(K1ΣP1)/Cosφ

=1.1×0.7×44/0.65

=52kw

It can be seen that the power supply load cannot be less than 52kw.

3-6． Construction water plan

Based on the structural characteristics of this project and considering local water difficulties, simple wells need to be drilled for water supply.

4. Construction methods of main sub-projects

4-1. Civil works

The current ground condition is earth surface, which needs to be leveled and compacted.

4-2. Road paving project

4-2-1． Base layer treatment

The base layer should be cleaned before construction, and the elevation should be strictly controlled.

4-2-2. Bricks and boards must be strictly selected before construction of the surface layer of paving blocks. The color difference and specification size shall not be used if they exceed the allowable deviation. The water-cement ratio should be strictly controlled during construction. After construction, sawdust should be used to keep it moist and sprinkled with water for maintenance.

4-3. Water and electricity installation project

Construction laying out—trenching—embedded pipe anticorrosion—embedded pipelines—earth backfilling

4-4. Garden sketch project

Construction laying out - foundation excavation and filling - electric pipe pre-embedding - modeling - pouring or prefabrication - installation

4-5. Plant planting

1. Planting of seedlings

1. Preparation work before planting

1.1 Preparation of seedlings

According to the engineering design Drawings list the species, quantity, and specifications of the seedlings, confirm the supply sources of the seedlings, as well as the transportation conditions and methods of transportation to the planting site. Seedlings that meet specifications, are healthy, and are free of diseases and insect pests should be marked one by one. High-quality seedlings should meet the following conditions: well-developed and complete root system, short and straight main heel, more lateral roots and fibrous roots close to the rhizome, no splitting of the root system after seedling emergence; thick and straight seedlings, not leggy; evenly distributed main and side branches. , can form a perfect crown; free from pests, diseases and mechanical damage.

1.2 Pre-planting soil preparation and laying out lines

According to the requirements of the design drawings, the soil quality of the planting site should basically meet the needs of plant growth. If the soil quality is found to be too poor, it should be filled before planting the temple. Plant soil to keep the plants alive.

According to the drawings, find out the actual planting position of the seedlings on site, sprinkle the gray spots with white ash, and set out the lines at fixed points. Generally, the determinant laying out method and the equidistant arc laying out method are used.

1.3 Excavation of tree holes

Tree hole excavation is generally carried out 1-2 days before transporting seedlings. The size of the planting hole depends on the condition of the soil ball and root system. The soil ball should be 16-20cm larger than the soil ball. The depth of the hole is generally 10-20cm slightly deeper than the ball height. When planting bare-root seedlings, the root system should be fully stretched and the tree should be protected. The hole must have the same diameter at the top and bottom to avoid the appearance of a "pot pit" that is large at the top and small at the bottom. The excavated topsoil and core soil should be stacked separately.

2. Key points for seedling planting construction

2.1 Planting time: The time difference between seedling raising and loading should be shortened as much as possible, so that planting can be carried out at any time.

2.2 Transport of seedlings: During the transportation process, all plants must be well packaged to ensure that they are not damaged by the sun, wind and other adverse weather conditions. The roots of bare-root plants should be dipped in mud and wrapped in straw bags. Evergreen trees and shrubs should be packed in soil balls and straw bags, and the soil balls should be kept intact before arriving at the site and before planting.

2.3 Planting seedlings: Put the root system or soil ball of the seedlings into the tree hole, center it and then erect the tree to ensure it is vertical, and then backfill the planting soil in layers. Generally, each layer is 20-30cm. First fill in the more fertile topsoil. After filling the soil, lift the tree roots slightly upward to stretch the root system and tamp the soil firmly with a shovel until the hole is filled. The soil mark should be slightly flat and slightly higher than the pit mouth to prevent sinking and sinking after planting, which may lead to water accumulation and rot at the base of the trunk. After filling the pit with soil, surround the tree with remaining soil, build a water dam and tap it firmly to facilitate watering. The height should not be less than 15cm.

2.4 Watering of seedlings: Watering of newly planted seedlings should be preferably done with natural water. Water must be poured once within 48 hours. The second watering should be done later, and the third watering should be done after the second time. Carry out within 5-10 days after flooding. Note that watering must be sufficient and thorough. After the third watering, the weir should be sealed in time, and a 20-30cm high mound should be planted around the base of the trunk to maintain moisture in the soil.

2. Lawn establishment

1. Leveling of the site

Because the leveling of the site is directly related to the future growth quality of the lawn, so this Process is particularly important.

1.1 Preliminary leveling: first pick up the surface garbage and then plow the land to a depth of not less than 30cm, and then break up the soil clods. For land with a lot of debris, you can use a 10mm*10mm screen to screen it once to ensure that the debris is removed, and then use an iron rake to level the land. Sections with poor soil quality need to be partially or completely replaced with soil. The depth of soil replacement should be no less than 30cm. After soil replacement, water is poured to make it sink and compact, and then backfilled with soil. Repeat this several times until the site is level.

1.2 Preparation of weeds, pests and diseases before construction: In order to prevent the growth of weeds behind the lawn, in addition to clearing tree roots and grass roots during land preparation, glyphosate, paraquat and other killing chemicals can be used For systemic conductive herbicides, spray 75-100g per acre, usually one month before building a lawn. To prevent insect infestation, pesticides such as methamidophos and phoxim can be sprayed one week before planting to achieve the effect of killing insects.

1.3 Fertilize before planting grass: Spread mature organic fertilizer 3kg/m2 and compound fertilizer 0.08kg/m2 evenly on the leveled site, then plow the soil, then rake it flat and rake it. Fine, ready to sow.

2. Lawn planting construction

After the soil is leveled and raked fine, lawn planting can be carried out.

2.1 Sowing method: The seed amount is generally 8-10g/m2, and the sowing method uses a combination of broadcast and mechanical sowing. After sowing, the soil should be covered in time with a soil thickness of 0.5-1cm, and then pressed with an iron roller to ensure uniform emergence of seedlings. For watering work and maintaining moisture, you can cover the lawn bed with a straw curtain to reduce watering time. After all the grass seedlings have emerged, remove the straw curtain. Note that the curtain must be removed on a cloudy day or before evening to prevent direct sunlight from burning the grass seedlings.

2.2 Lawn planting method: Open a 5cm deep ditch on the flat ground with a row spacing of 20-30cm, put the torn grass pieces into the ditch, then fill it with soil and compact it. . In order to improve the survival rate and shorten the seedling slowing period, two points should be paid attention to during the transplanting process: first, the turf should be covered with an appropriate amount of mulch soil; second, the time from digging to planting should be shortened as much as possible. It is best to dig and plant the grass on the same day. After planting, it is necessary to fully irrigate and remove weeds. After one month of maintenance, it can become a flat surface.

5. Measures to ensure construction quality

5-1. Organizational management measures

5-1-1 Establish a quality assurance system and a secondary quality assurance system for the company and project department (see attached table for details).

5-1-2 Implement project management under the project manager responsibility system, establish an authoritative quality management organization, and equip a full-time quality inspection team. Strengthen the idea of ??"quality first, serve users", conduct regular quality inspection and evaluation work, implement the method of quality notification, do a good job in quality assessment of each sub-project, and reward the good and punish the bad.

5-1-3 Strengthen the acceptance system for concealed projects. No construction shall be carried out without the approval of the owner and the supervision unit.

5-1-4 Insist on technical briefing of various types of work. Before the construction of each process, detailed technical briefings should be made to the operating team to ensure that each operator is familiar with the technical requirements and operating points.

5-1-5 adopts a method that combines self-inspection, mutual inspection, handover inspection and professional inspection, and implements a wall-listing system for the list, level, and quality level of operators of major types of work.

5-2． Technical management measures

5-2-1 In order to ensure the quality of the project, prepare quality control process flow charts for the main distributed sub-projects (such as earthworks, stone installation, paving projects and other sub-projects).

5-2-2 Before the start of construction, theodolite, level and process control quality testing equipment used for measurement and positioning must be certified and qualified. During use, measuring instruments must be tested according to measurement standards.

5-2-3 Axis positioning piles must be strictly protected to avoid damage and must be reviewed and inspected regularly during construction. Axis control piles and total elevation control points must be approved in writing by the owner before they can be used.

5-2-4 All measurement and observation points must be buried reliably and firmly.

5-2-5 Strictly control the quality of materials. Sand and stone must have a quality inspection report before entering the site, and they can be used only after they pass the test; cement must have an exit warranty and certificate of conformity before entering the site, and must be retested in the laboratory, and can only be used after passing the test; other materials such as square bricks, bluestone, etc. must have Certificate of conformity and necessary tests must be carried out before use.

5-2-6 Construction must be carried out strictly in accordance with the drawings. Any modifications to the drawings encountered during construction must be approved by the owner and the relevant procedures must be completed before proceeding.

5-2-7 All on-site operators must obey the guidance and supervision of construction technicians and supervisors.

5-3. Measures to ensure the construction period

5-3-1 Make full preparations before the start of construction and during the construction phase, such as familiarity with drawings, material delivery, temporary construction and erection, mechanical equipment and labor organization, and material procurement.

5-3-2 Prepare a scientific, reasonable and operable construction organization design, and ensure the connection between various processes to avoid delays and shutdowns.

5-3-3 Use mechanical operations as much as possible to reduce waste of human resources and speed up construction progress.

Some sub-projects of 5-3-4 consider night construction, and special measures will be taken during holidays and busy farming seasons to ensure the normal progress of the project.

5-4． Measures to ensure safety

The 5-4-1 construction site established a safety leadership group headed by the project manager to strengthen safety management, fire management, on-site security and site management, and strive to create a civilized construction site.

5-4-2 When entering the construction site, all construction personnel must conduct safety education, implement the spirit of relevant safety documents, and learn on-site rules and regulations to arouse great attention to safety.

5-4-3 Establish and improve various safety management systems, especially electricity and machinery management. Non-professionals are not allowed to connect wires and operate machinery without permission.

5-4-4 Check and repair electrical circuits frequently, and hand-held power tools should be connected to leakage protection devices.

5-4-5 Construction workers must wear safety helmets when entering the site. It is strictly prohibited to enter the site after drinking.

5-5. Other guarantee measures

5-5-1 Measures for civilized construction on site

5-5-1-1 Hang slogans and slogans within the construction site and hold regular meetings to emphasize the importance of civilized construction importance. Roads and material yards should be cleaned at all times, and urination and defecation in the construction area are not allowed.

5-5-1-2 All kinds of floor materials, stones, and wood entering the site must be stacked according to the site plan. Proper road hardening is carried out on site to allow for the deposit of sand, stone and other materials.

5-5-2． Saving Measures

5-5-2-1 Technical personnel’s material picking plans should improve accuracy and avoid material shortages or excesses. During the construction process, a quota-based material collection system is implemented, and the remaining materials of the day must be transported back to the work shed or stockyard, warehouse, and are not allowed to be thrown away randomly.

5-5-2-2 Strengthen on-site management, rationally organize the entry of materials and semi-finished products, and stack them according to the construction organization design plan to reduce secondary handling and losses.

In 5-5-2-3 paving projects, layout and grid joints should be arranged reasonably to reduce brick cutting and brick damage rate.

5-5-2-4 Strengthen quality control, avoid repeated operations, and achieve one-time acceptance.

5-5-2-5 Reasonably arrange the comprehensive construction schedule to shorten the construction period and reduce expenditures on labor, machinery and other expenses.

5-5-3． Protective measures to prevent environmental pollution

5-5-3-1 The sewage from washing concrete mixers and mortar machines must not flow freely anywhere. A water well can be dug at the construction site and sealed with a cover to wash the mixer and mortar machine. The sewage flows into the water collection well and is discharged into the sewer after settling. Clean up and transport construction waste at any time during construction and pile it in designated locations.

5-5-3-2 When placing noisy machinery, try to keep it away from the dormitory area and use it as little or as little as possible at night.

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