What are the major aspects of outdoor drainage engineering?

Outdoor drainage mainly involves domestic sewage, industrial wastewater, and sewage in the dry season. Once a problem occurs in the drainage project, the impact on the city is very large. In order to ensure that the drainage works are done well, it is very necessary to understand the outdoor drainage design specifications and special drainage engineering precautions. This is also a precondition for ensuring normal construction. For non-professional friends, it may not be very understanding of this aspect. Don't worry, if you have this need, you may wish to follow me to learn about outdoor drainage .

Outdoor drainage introduction

Five major structures of outdoor drainage systems: inspection wells, septic tanks, grease traps, grit chambers, and cooling pools.

1, inspection wells

Role: connection (instead of fittings), inspection, clear.

Location: Pipeline intersections, turns, pipe diameters or changes in slope, straight pipe sections at regular intervals.

Composition: Well base, bottom hole, well body, well cover and well cover seat.

2. Septic tank

Role: The septic tank is used to intercept and settle the fecal sewage, and the organic matters in the sediment are subjected to anaerobic glycolysis.

Principle: Slow flow, sundries, and supernatant discharge.

Construction: There are round, rectangular; double grid, three grids.

The septic tank should be installed in the downstream section of the receiver pipe, where the building faces away from the main street and is close to the toilet but is convenient for clearing the motor vehicle.

5m from the outer wall, 30m from the underground water intake structure, 10m from the pool.


3, grease trap

Function: Collect and remove grease, light oil, etc. in the sewage.

Location: Grease traps to exclude grease should be located close to the oily sewage production site, and oil traps can also be provided on the indoor oily sewage drainage branch pipes. Grease traps that exclude light oil should be located outdoors.

Principle: slow flow, oil float, walk away.

4, sand basin

Function: Precipitate and remove inorganic substances such as sediment in the sewage.

5, cooling pool

Effect: Waste water with a temperature higher than 40°C should be cooled before being discharged into the urban drainage pipeline.

Principle: Intermittent hot water can be let cool or mixed with cold water, continuous hot water to make hot water mixed with cold water.

Structure: There are two kinds of cooling pool: siphon type and partition type.

Outdoor drainage design specification

The construction standards for outdoor drainage works should be designed and constructed in accordance with the outdoor drainage design specifications promulgated by the State, so that there will be certain protection for future urban drainage.


Professional drainage engineering matters needing attention

1. Preserve the quality control of holes and pre-embedded casing construction: The construction avoids clogging of pipelines due to sundries, leading to poor drainage.

2. Quality control of installation and construction of water supply pipes: The direct impact of the quality of life of the residents. After the building structure is capped, the installation company should closely cooperate with the civil construction unit and proceed with the construction of the sewer and riser pipes.

3. The quality control of drainage pipeline installation and construction: All the pipe fittings and adhesives are used together to avoid the lack of final bonding and affect the final quality.

4. Quality control of pipeline attachments and sanitary ware construction: In addition to pipelines, construction also includes installation of pipeline accessories and other equipment and sanitary ware.

5. Quality Control of Hidden Project Construction: The construction must meet the design requirements to ensure smooth water intake and drainage, and the pipes and pipes, pipes and appliances are closely connected without leakage.

Editor's summary: The above is the introduction of the relevant knowledge of the outdoor drainage project, and hope to help friends who have this requirement! For more information, please continue to pay attention to our website, follow-up will show more exciting content. You can also purchase your favorite product on Qijia Mall!

Outdoor drainage

Gin Pole Operations

On the documentation side on things, operator will need adequate details depicting the planned operational configuration(s) for the complete gin pole system to be used including:

•Gin pole mast

•Top lifting block

•Load and tag line sizes/configuration (including use of heel block, max load position angle, max tag angle, tag arrangement, etc.)

•Basket and bridle attachment to gin pole and supporting structure including associated hardware and sling sizes/config

•All relevant details pertaining to jumping/lowering the pole into position

•All relevant details pertaining to tilting the pole for operation (use of luffing block, etc.)

•Any other relevant details based upon user`s planned operational configurations for assembly, setting, jumping, arranging, lifting, and/or removal of the system

As pole manufacture MARSHINE we only address the gin pole mast and allowable load and tag capacities / angles based solely upon the mast`s rated strength.  Affirming the pole was designed, built and load charts are in accordance with the ANSI/TIA-322 standard.  Its operator responsibility to ensure they are in compliance with all regulations related thereto.

Complete records of pole inspections and record of Magnetic particle inspection shall be performed on 10% of the welded connections every 10 years.

Annual inspections reports shall be maintained for a minimum of two years.

All gin pole operations must be in compliance with the latest revision of ANSI/TIA-322 and the OSHA CPL 2-1.36

 Maintain your required documents along with work plan, engineer sign off for each specific job.

ANSI/TIA-322 standard includes an impact factor of 1.7 for all gin poles using synthetic load lines.  


Gin Pole storage racks for gin poles are recommended for safe transport, storage and return shipping for inspection service. These units protect and reduce the potential of damage from excess handling with forks etc.


Gin Pole

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