【 Weak current College 】 outdoor integrated pipeline construction site coordination and control

Overview outdoor integrated pipeline
Outdoor integrated pipeline should be defined within the scope of the red line, without local planning departments goodness from beyond the red line construction, may result in higher penalties for administrative departments. No need to go beyond the red line construction, the required audit reported that the pending approval before within the scope of the provisions.
(1) building control red line in the electromechanical sector pipeline:
1) to the water mains, wells, fire hydrant, fire pumps and wells; tube, pipe, in well;.
2) storm drain, well, sewage pipes, wells; and drainage operator; pressure drainage pipes.
3) heat pipe, Wells (steam, hot water); gas pipe and the well.
4) entering high-voltage power cable.
5) telecommunications cable (or cables) House.
6) lawn lamp, architectural lighting, music fountain, buildings and structures between the connected wind, water, electricity pipelines.
7) outdoor flea control pipeline, including the security monitoring and control, fire alarm system, building automatic control, premises distribution system, TV, telephone, radio, etc.
(2) external subcontractors situation clearly:
1) by the total package direct subcontracting, by the total package subcontract agreement, and that people always package management.
2) consists of the construction unit direct subcontracting, by construction enterprises subcontract directly with the subcontractors and incorporated into the agreement, is responsible for coordinating the management of the total package. If the total package of construction units and subcontractor commissioned by the signing of the agreement, the total package can be signed an agreement with the subcontractor, and the construction units to confirm.
Outdoor integrated pipeline construction basis
(1) understand confirmation outdoor building control red line boundaries.
(2) the professional outdoor pipeline construction drawing is complete, include drawings directory, design brochures, pipeline plan, pipe vertical cross-sectional diagram, pipe Groove profiles, various professional settings of wells (such as valve shaft, repair wells, hydrant wells, water supply and drainage wells), grease traps, node detail drawing, integrated pipeline plan. Longitudinal cross-section diagram from the pipe and the integrated pipeline plan you can understand the pipeline in the strata in the vertical spacing, and comprehensive, well floor elevation, coordinates, direction, slope, etc., be aware that is conducive to the unified command, according to the schedule plan construction, ensure that the construction quality.
(3) understanding of the major existing national standards and industry construction acceptance of master quality project, strictly enforce discipline.
(4) pre-construction check various professional pipeline Declaration and approval documents are complete, if incomplete, package unit may help build units complement.
(5) the professional approach before for qualification, selection on merit.
1) should have the qualifications of a business license for qualification, Contracting project scope.
2) construction enterprise safety qualification.
3) credit rating certificate.
4) quality management system certification.
5) performance: the best for last 2 ~ 3 years from the completion of the project and in the application project.
6) for the professional and special types of work should have a certificate, a project manager should have project manager certificate.
Outdoor integrated pipeline construction drawing examination of key
(1) audit construction drawings by have the legal qualification of design unit design, construction plans should cover a construction signs, and indicate the date of construction drawing design, allowing the use of the date of issue, confirm the construction drawings to be used effectively. Use design modifications of territory, must go through the above procedure does not allow you to use. Construction drawing for it or lose it, you should set aside time stamped drawings, and dated, is not allowed to waste circulation figure at the construction site.
(2) Organization construction drawing technology gives the low-down and triage, the need to modify the site, to make modifications to the problem raised should be clear who should be the owners of the solution, project management, design, construction units, while the Quartet for the design change. Design changes regarding technical and fuel economy, should be distinguished, in order to facilitate a final summary (knot).
(3) pipeline plan audit Essentials:
1) determines the overhead, trench, buried three of laying, belonging to either pipe laying.
2 the determination of the relative position): such as buildings and buildings, buildings, and between the red line; pipe trenches, pipes, valves and rain water wells, heat well, gas well, fire hydrant wells and pump adapter shaft raster between buildings.
3) pipeline of elevation, orientation, slope, pipe diameter, trench pipe elements, etc.
4) exterior access pipeline specific elevation, coordinates and interface.
5) red line and pipeline interface site elevation, coordinates, and interfaces.
(4) piping longitudinal profile control chart audit Essentials:
1) each pipeline starting point elevation (both in absolute elevation tagging), variable slope point and connect branch pipeline starting elevation.
2) pipe to the slope and slope (or note out end of elevation).
3) from the longitudinal cross-section diagram can be used with other professionals in the laying of underground, understanding the hierarchy between spacing meets the design requirements.
4) to learn whether a pipeline will overlap the space.
(5) trench profile audit Essentials:
1) Groove section size, within the pipes arranged gullies and order is justified.
2) pipeline routing spacing and Groove wall of relative size meets the specification requirement and design requirements.
3) bracket type and material requirements.
4) ditch-specific practices and requirements.
(6) tube well profile audit Essentials:
1) Special tube well plot by design, proven before construction.
2) use of the National Atlas map should indicate the number of pages, and figure number.
(7) comprehensive pipeline chart audit Essentials:
1) statistics for the various professional pipeline what, how many professional wells, standard and non standard practices in the respective number of wells.
2) elevation, coordinates, position, orientation, slope, pipe material, pipe diameter.
3) pipe carrier is the number of pressure is the number of non-pressure.
4) red line the number of internal and external interfaces, the interfaces on the red line within or outside of the number of mouth rejection, who will complete.
Materials and accessories for quality assurance
(1) material: steel tube and pipe fittings, steel, cast iron pipe, cast iron shaft washer, iron manhole cover, etc., should have the material inspection certificate and the factory certification.
(2) Accessories: valves, instruments, regulating device and other accessories for professional use, should have the factory certification. Certificate to be given on the order number, product name, specifications, production and inspection dates, certificate number, manufacturer, quantity.
25-4-2-5 material and accessories acceptance points
(1) pursuant to the certification and physical checks, verify that the physical checks whether an exhibit, specifications, quantity, quality and compliance with national standards and design requirements.
(2) check the product appearance defects, such as collision damage, scratches, deformation and other rotating parts, valve is running flexible and well documented.
(3) various gauges should have statutory measurement unit detection, identification, certified before use, do not allow non-conforming products into the field. Identification certificate expiration shall check conformity before use.
(4) the material check to make sure that there are suspected of material needed materials, must be provided for testing, confirmation must be qualified after use.
Outdoor integrated pipeline construction site with focus
1. burying ground engineering content
(1) professional pipe trench excavation and trench bottom and Groove wall laying, Groove cover production, Groove bottom compaction, backfill, etc.
(2) professional use wells bottom practices, wall lining, well ring fixation, ladder, well cover, etc.
(3) cement pipe trench excavation, backfill in the backplane, and so on.
(4) burying ground decoration project of construction of content:
1) such as ground floor stone or tile, various shaft ring and shaft cover from civil engineering to assist installation.
2) grates, floor drain rain water from civil engineering to assist construction.
3) outdoor drainage (ditch) from civil engineering to assist construction.
(5) the exterior casing wall waterproof construction by civil engineering assistance.
2. professional pipeline construction combined with content
(1) with the Groove in the parallel laying, construction program coordination between professionals, note the space between the pipes.
(2) adjust the variable slope Office took note of the slope and elevation, slope.
(3) parallel to the lower level underground laying, consideration should be given to the layer with the layer of space between the upper and lower layers to stagger the distance should be staggered, otherwise detrimental to the pipeline maintenance.
(4) piping at the rendezvous point, should the existing national standards and norms to take appropriate protection measures, and to come up with solutions.
3. industry management cooperation and communication
Industry management departments of municipal administrations (supervisory authority), telecommunications management, gas management, fire management, thermal management, security management, water-saving Office management, power management, local monitoring station management departments, etc. According to the procedure before construction, for good construction approval file again. In pre-construction, construction process more please guidance, completion of preflighting, found the problem rectification in order to facilitate the acceptance of a pass.
Outdoor integrated pipeline construction control focus
(1) red line interfaces, and municipal construction profession elevation, discussions of rejection coordinates, pipe diameter size, interfaces, methods, and throw into the red line or swing out red line pipe length, decide whether to start construction of the site after the first left, meet people responsible for the interface, as well as by the consultation session recording, the parties signature confirmation after implementation to avoid interface issues over trifles.
(2) exterior interface, indoor and outdoor construction is not a unit, you should explicitly throw mouth elevation, coordinates, pipe diameter size, flow direction, throw length, interface methods. By mutual consultation for record of the meeting, the parties signature confirmation.
(3) exterior casing, tubing and casing sealing shall promptly check.
(4) on the waste pipe casing should use blind plate welded at both ends up (around welding uniform).
(5) control of gully compactness, prevent collapse:
1) found bottoms with moist soil must be dried or lime soil compaction, detection can be conducted backplane compactness and pipeline construction.
2 construction of open Groove) should avoid rain period.
3) backfill, waste, construction waste must be sifted, step-by-step by standardizing and consolidating the, prevent fraud, should be set by hand.
(6) various well control for professional use:
1-hole basis whether qualified).
2) Wells of masonry geometry for conformance to specifications.
3) ladder, well ring\well cover (there is a distinction between light and heavy), well cover identity is consistent with industry standards.
4) well fitted tube or valve components such as distance to wall, well, well within the elevation is consistent with the normative provisions.
5) is set in well water.
6) rain sewerage wells in slope, slope to meet design requirements, etc.
(7) large diameter pipe interface fixed solid, especially in the corner, tee connector should be firmly fixed to suppress the check, test water qualified before burial ground.
(8) ductile iron pipe rubber ring interface (socket interface), the ends should be in the interface, setting cement 50cm Pier fastened or leakage occurs, should pay special attention to check.
(9) winter pipeline construction, due to the low temperature, suppress the end should be put the net in water to prevent freezing pipes and the valve components.
(10) project schedules, change of randomness, therefore the professional construction team should follow the construction progress and advance mental consciousness, to do ahead of persons and goods preparation, under the command of civil unity, mutual cooperation, collaborative construction, can guarantee duration and quality of the bumper.