给水排水工程毕业设计正文+外文翻译(15)

3.2 Drainage tubes of noise

With the elimination of ordinary drainage iron pipe, drainage tubes began in residential and drainage engineering in application, but common PVC pipe drainage noise than iron pipe about high 10 dB, if drainage stand pipe near a bedroom, add cast-in-situ floor sound insulation effect is poorer, household clearly feel drain pipe noise, reduce the quality of life. Therefore in the design should be paid attention to in the following aspects:

1) Health appliance when decorating to try to consider that drainage stand pipe from the bedroom and living room. 2) Pipe adopt new noise products. 3)In the vertical pipe can be set.

3.3 Drainage pipe diameter

Generally speaking, drainage pool, the discharge tube such instruments for DN32 ~ DN50 minimum diameter, and contains the smallest diameter for DN100 feces. In the circumstances, should be in first floor drain amplifier (than vertical pipe), it has the following advantages: can greatly reduce a blocked discharge pipe, and convenient to clear out, To solve the stand pipe bottom bottom of the positive pressure affect health instruments are very good help, If floor drain in the basement, still can improve drainage piping, increase the height of space. Usually, a drainage pipe length, instead of DN100 will increase many investment 6, but can bring great convenience to households. Change the position in a tube should be below the ground layer above the ground, so does not affect the space and beautiful.

3.4 Water piping valve setting indoor and pipe diameter

The architectural design of water drainage standard for water supply pipe should establish the valve parts made detailed rules. In residential design, water at the bottom

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