Ask for a construction organization design of greening and landscape engineering.
construction
group
construction
design
unit: Zhejiang erjian construction group co., ltd. Hangzhou branch
date: May 211
contents
1. Project overview < Quantity assurance measures
7. Safety assurance measures
8. On-site civilized construction management measures
9. Time limit assurance measures
Construction organization design
1. Project overview
1.1 Project name: Huzhou Balidian jidao Phase II Project
1.2 Construction unit: Huzhou Xing Wu Nantaihu Construction Investment Co., Ltd.
1.3. : This project is located in Balidian Town, Huzhou City, Zhejiang Province, with a total greening area of about 79,36m2, of which the greening area is 61,228m2, the river area is 4,952m2, and the rest is paved area of 13,18m2. < P > 1.5 Construction site: Jidao Community, Balidian Town, Huzhou City
1.6 Proposed construction period: May 18, 211-August 211.
1.7.2 All seedlings shall be guaranteed to have a survival rate of 98% and grow well. In case of quality problems, they shall be replanted free of charge and kept alive, reaching the acceptance standard until they are handed over.
1.7.3 seedlings can be planted as required only after they are delivered to the site and accepted by the purchaser. The planting shall be carried out according to relevant national or provincial standards.
2. Construction deployment
2.1 Site organization chart
3. Construction preparation:
3.1.1 Make the "Construction Site Layout"
3.1.2 Make the overlay facilities according to the construction characteristics of this project
3.1.2.
3.1.3 temporary water use shall be designated by party a
site layout and temporary facilities layout (tentative)
entrance
Description: this drawing is the design expectation, which can be changed according to the owner's requirements if required.
3.2 technical preparation
3.2.1 understand the design intent according to the design description and drawings.
3.2.2 organize management personnel to make technical disclosure on their design ideas, seedling selection, planting, etc., so as to make each management clear the design requirements and be familiar with the design drawings and relevant technical data.
3.2.3 organize management personnel to learn national and local quality acceptance standards, construction technology standards, etc., master all kinds of seedling size and construction preparation matters selected for this project, and prepare construction operation instructions, technical disclosure and sub-item construction plans for this specialty.
3.3 usage plan of labor force and main machines and tools:
3.3.1 labor force schedule: unit: person
No.No. Number of jobsNo.No. Number of jobs
1 Strong worker 354 electrician 1
2 green chemical industry 55 plumber 2
3 maintenance worker 2 total 18
Description: The number of workers varies with the change of engineering projects and quantities.
3.3.2 the main machinery to be put into this project, Equipment list
serial number, name, size, model number, country of manufacture or place of origin
1 Double-row car liberation 146 2 China
2 lawn mower Honda 4612 1 Japan
3 lawn mower Honda 4699 1 Japan
4 sprinkler Dongfeng EQ144 1 China
5 brush cutter GSK/ Japan 1 Japan
6 pesticide spraying vehicle BYS54GY 1 China
7 aerial pruning vehicle JSXJ-55 1 China
8 chainsaw G38/ Japan 1 Japan
9 Hedge Machine Komatsu 1 Japan
1 Hedge Machine Taishan 1 China
11 Crane Liberation 1 China
12 feet 1 China
13 Tricycle 2 China
4. Construction schedule
4.1 Construction schedule (tentative).
No. Name of partial project, calendar days of construction period plan
1 Field survey project 211.5.18-5.2 2
2 Site cleaning 211.5.18-3.2 2
3 Backfilling of planting soil 211.5.18-5.26 8
4 Site leveling 211. 18-6.2 33
6 Shrub Planting Project 211.5.22-6.3 39
7 Ground cover, 3
8, 211.6.15-7.15, 211.7.15-7.2.5
9 Maintenance project lasts for one year from actual planting to completion
1
5. Construction methods and technical measures
5.1 Planting soil project
5.1.
5.1.2 before planting, the physical and chemical properties of the soil are tested and analyzed, and exotic soil is used for strong acid, strong alkali, saline soil, saline-alkali soil, heavy clay, sandy soil, etc. which are not suitable for plant growth.
5.1.3 Before planting, ensure that the thickness of planting soil suitable for plant growth meets the requirements for plant growth, namely:
vegetation type: herbaceous lawn, small shrub, large shrub, shallow-rooted tree and deep-rooted tree
soil thickness: 3cm 45cm, 6cm, 9cm, 15cm
5.2 Selection and supply of seedlings
5.2.1 Selection of seedlings by us
5.2.
5.2.1.2 Carry out pest quarantine to ensure that no pests and diseases seedlings enter the site;
5.2.1.3 Carefully study the drawings and select seedlings in strict accordance with the standards required by the drawings;
5.2.2 seedlings approved by the owner
5.2.2.1 In the process of approval, we will adjust or replace the unqualified seedlings to ensure that all the seedlings entering the site are qualified seedlings;
5.2.3 Seedlings are shipped
5.2.3.1 Seedlings are lifted in strict accordance with the requirements of urban landscaping construction specifications to ensure that the roots and soil balls meet the standards;
5.2.3.2 From seedling emergence to planting, try to shorten the exposure time of seedlings in the air and reduce the damage to seedlings;
5.2.3.3 When loading and unloading the vehicle, the seedlings should be hoisted and put down gently. When loading the soil ball seedlings, the soil ball should be put forward according to the driving direction of the vehicle, and the crown of the tree should be packed neatly backwards. The flowers and shrubs can be loaded upright during transportation.
5.3 planting project
5.3.1 Pay-off
5.3.1.1 Pay-off in strict accordance with the construction drawing, set out all coordinate points of the construction coordinate grid on the green ground with a measuring instrument, nail a Xiao Mu card at each coordinate point, mark the serial number and coordinates on the brand, draw out the grid, and find out a series of intersections between the tree group, the tree belt forest edge line and the construction coordinate grid line.
5.3.1.2 Nail're in the range of tree planting, indicating the species, quantity and specifications of the pit, then measure it with a tape measure, indicate the position of each tree and make a good mark;
5.3.2 Tree digging holes
5.3.2.1 The specifications of tree holes shall be operated according to the following table
Shrub crown diameter planting hole depth
2 cm 7-9 9-11
1 cm 6-7 7-9
5.3.
5.3.3 Planting Project
5.3.3.1 Pruning trees before planting
Before planting, the root system of seedlings should be pruned, the split root, the pest root and the excessively long root should be cut off, and the crown should be pruned;
a) Trees: tall deciduous trees with obvious trunk should keep the original tree shape, and the branches should be properly thinned, and the main branches should be cut short on the robust buds; For trees with a trunk diameter of more than 1cm, the original tree shape can be maintained by thinning branches; For evergreen trees with dense branches, the branches can be properly thinned, and evergreen conifers should not be pruned. Only the branches of diseases and pests, dead branches, weak branches and over-dense branches should be pruned, and the crown of your tree species should be pruned less;
b) Pruning of shrubs and vines: Bare-rooted seedlings with soil balls or soil in wet areas and flowering shrubs with flower bud differentiation in the previous year should not be pruned, but should be pruned when branches are dead, pests and diseases, and large shrubs with dense branches can be properly thinned. For grafted shrubs, the sprouting branches of rootstocks below the cut should be pruned. Shrubbery with obvious branches and new branches bearing flower buds should be cut strongly according to the tree trend to promote the growth of new branches; Trees and shrubs used as hedges can be pruned according to the design requirements after planting; Climbing and creeping seedlings can cut off long parts and lateral branches;
c) the cut should be smooth and not split;
d) When the branches are cut short, the outer buds should be left, and the cutting mouth should be 1 cm above the bud position;
e) when pruning large branches and thick branches with a diameter of more than 2cm, the cut must be flattened and coated with preservatives;
5.3.3.2 seedling planting
a) before planting, check whether the specifications of the tree pit meet the requirements, and backfill some planting soil for pit treatment after it is qualified
b) when planting, straighten the seedlings and fill them in layers. When the soil is filled, pull up a tree to make it sparse and spread, and continue to fill it to the requirements after tamping. According to the growth habits, shallow-rooted trees are planted shallowly and deep-rooted trees are planted.
c) When planting trees with soil balls, the non-perishable packaging materials must be removed;
5.3.3.3 Watering and supporting after planting
a) After planting, plant around the planting hole slightly larger than the diameter, and build an irrigated soil weir with a height of 1-15cm. The weir should be firmly built without water leakage. The newly planted trees should be watered for the first time on the same day, not less than three times after planting, twice every three to four days, and the third time on the tenth day. The cohesive soil should be watered less.
b) When planting trees with a DBH of more than 5cm, a pillar should be fixed, the supporting height should be more than 1.5m, and the trunk should be kept upright after being tied. After the climbing plants are planted, they should be tied or pulled according to the design requirements and growth needs.
5.4 big tree transplanting project
5.4.1 transplanting time. It is best to choose the dormant period of trees, before germination in spring and after deciduous trees in autumn as the best time. In urban reconstruction and expansion projects, big trees can be transplanted in the peak season (summer), and it is best to transplant them before and after cloudy days or rainfall.
5.4.2 transplanting wood to dig seedlings. Generally, the excavated transplanted wood is about 12 cm away from the root center, and it is dug vertically downward along the outer ring of the specified root width. In the process of excavation, when encountering thick roots, use a hand saw to cut them off, so as to avoid root splitting. When all the lateral roots are cut off, push down the tree body and cut off the main roots, so as not to hurt the root bark and fibrous roots as much as possible, and keep the original soil. Finally, wrap it with wet straw bags and straw ropes and transport it.
5.4.3 pruning of transplanted trees. Pruning is mainly to reduce water evaporation of trees and facilitate transportation and planting. If there are side branches that affect transportation, they can be cut short appropriately. In principle, conifers are not pruned, and broadleaf trees can be pruned appropriately.
5.4.4 transplant wood planting. When planting, the trees should be kept upright, with correct orientation (for example, the slow seedling period of trees with misplaced directions is extended by about 7 days, and the survival rate is about 2% lower), and the transplanted trees should be buried in layers, and supports should be set up to prevent the roots from shaking and breathing, which will affect the survival.
5.4.5 trees should be watered immediately after transplantation to keep the soil moist, strengthen management and protection, and pay attention to the occurrence of pests and diseases.
5.4.6 water for shade. The temperature is high in the peak season, and the transpiration is large. In addition to filling enough water when planting, the transplanted trees should be watered frequently and the roots should be irrigated. Strengthen management and protection. After transplantation, set up supports and fences to prevent and control pests and diseases, cut off redundant sprouting strips, and timely irrigate, fertilize, weed and loosen the soil.
5.5 maintenance project
5.5.1 intertillage and weed control, loosen the soil in time to remove weeds
5.5.2 water in time as needed, and water thoroughly every time, not less than three times a year, and increase the watering times as needed in case of drought;
5.5.3 Prune according to the design requirements to ensure the expected landscape effect;
5.5.4 Fertilize at least twice a year, topdressing 1-15g of quick-acting nitrogen fertilizer per plant before rainy season, increasing the organic fertilizer by 1kg /2cm (DBH of trunk) in autumn, and applying it at points;
5.5.5 Strengthen the prevention and control of pests and diseases, give priority to prevention, and apply pesticides in time when pests and diseases are found;
5.5.6 timely replanting and dying. Damaged or lost plants;
5.5.7 Clean and remove garbage frequently to protect the environment;
5.5.8 timely prevent cold in winter and pour frozen water;
5.5.9 In the early spring, the green water should be poured in time, and the cold-proof facilities should be removed.
6. Quality assurance measures
6.1 Quality control of seedlings
6.1.1 The project intends to carefully prepare the project seedling plan according to the design drawings, and screen the suppliers of seedlings under the auspices of the project manager and report them to the company for the record;
6.1.2 The purchaser must order and purchase with the identified suppliers according to the seedling plan;
6.1.3 The procurement personnel shall be responsible for providing certificates of conformity to the requirements for the incoming seedlings, and all seedlings shall have seedling quarantine certificates, etc.
6.1.4 On-site management of seedlings: the seedlings entering the site should be clearly marked, including the name and specifications of the seedlings, which should be neatly packed;
6.2 construction preparation control:
before the start of the process, the materials used in this process are qualified and the information is complete, the operable technical disclosure or construction measures have been worked out, the quality evaluation standard is clear, the problems left over from the previous process have been dealt with, and the sub-item evaluation has been completed. Construction personnel have been trained and qualified for special types of work, technical and safety disclosure has been made, and relevant inspection and test data are complete and qualified.
6.3 construction process control
The "three inspection systems", namely self-inspection, mutual inspection and handover inspection, should be strictly implemented in engineering construction. Self-inspection is the self-inspection of the team, which is organized by professional responsible engineers and inspected by technical and quality inspection personnel. If unqualified quality is found in the construction process, it shall be rectified in time until it is qualified. If it is not rectified seriously, the quality engineer has the right to stop work and rectify, and never let it enter the next working procedure to veto the quality.
6.4 Management system control
6.4.1 Implement the quality meeting system, summarize and analyze the quality of the work completed every day, find problems in time and propose solutions;
6.4.2 Professional responsible engineers and quality engineers must patrol the site daily to find problems in time and eliminate all kinds of quality hidden dangers.