排水橫管水力計算表,,,,,,,,,,,,,,,,,

序號,管材,"管徑

d

(mm)","坡度

i","設(shè)計充滿度

a=h/D","流速

m/s","流量

L/s","粗糙系數(shù)

n","充滿角

B=4arcsin（a^0.5）","濕周

X=dB/2",水力半徑R=(d/4)(1-sinB/B),"過水斷面

面積

A=RX","附：

一、《建給》：

4．9．20重力流屋面雨水排水管系的懸吊管應(yīng)按非滿流設(shè)計，其充滿度不宜大于0.8，

管內(nèi)流速不宜小于0.75m／s。

4．9．21重力流屋面雨水排水管系的埋地管可按滿流排水設(shè)計，管內(nèi)流速不宜小于0.75m/s。

4．9．23小區(qū)雨水管道宜按滿管重力流設(shè)計，管內(nèi)流速不宜小于0.75m／s。

二、《室外排水》：

4．2．4排水管渠的最大設(shè)計充滿度和超高，應(yīng)符合下列規(guī)定：

1重力流污水管道應(yīng)按非滿流計算。2雨水管道和合流管道應(yīng)按滿流計算。

4．2．5排水管道的最大設(shè)計流速：

1金屬管道為10．0m／s。2非金屬管道為5．0m／s。

4．2．7排水管渠的最小設(shè)計流速，應(yīng)符合下列規(guī)定：

1污水管道在設(shè)計充滿度下為0．6m／s。2雨水管道和合流管道在滿流時為0．75m／s。",,,,,

1,塑料管,800,0.003,1,1.87,941.57,0.01,6.28,2.51,0.2000,0.503,,,,,,

2,塑料管,300,0.003,0.5,0.97,34.43,0.01,3.14,0.47,0.0750,0.035,,,,,,

3,砼管,500,0.003,1,0.98,192.04,0.014,6.28,1.57,0.1250,0.196,,,,,,

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附表：,,,,,,,,,,,,,,,,,

《建給》表4.4.8小區(qū)室外生活排水管到最小管徑最小設(shè)計坡度和最大設(shè)計充滿度,,,,,《建給》表4.4.9建筑物內(nèi)生活排水鑄鐵管道的最小坡度和最大設(shè)計充滿度,,,,《建給》表4.4.10建筑排水塑料管排水橫管的最小坡度、通用坡度和最大設(shè)計充滿度,,,,《室外排水》表4.2.4最大設(shè)計充滿度,,"《室外排水》表4.2.10

最小管徑與相應(yīng)最小設(shè)計坡度",,

管別,管材,最小管徑,最小設(shè)計坡度,最大設(shè)計充滿度,外徑,通用坡度,最小坡度,最大設(shè)計充滿度,外徑,通用坡度,最小坡度,最大設(shè)計充滿度,管徑或渠高,最大設(shè)計充滿度,管道類別,最小管徑,相應(yīng)最小設(shè)計坡度

接戶管,埋地塑料管,160,0.005,0.5,50,0.035,0.025,0.5,50,0.025,0.0120,0.5,200~300,0.55,污水管,300,塑料管0.002，其他管0.003

支管,埋地塑料管,160,0.005,,75,0.025,0.015,,75,0.015,0.0070,,350~450,0.65,"雨水管和

合流管",300,塑料管0.002，其他管0.003

干管,埋地塑料管,200,0.004,,100,0.020,0.012,,110,0.012,0.0040,,500~900,0.70,,,

,,,,,125,0.015,0.010,,125,0.010,0.0035,,≥1000,0.75,雨水口連接管,200,0.01

,,,,,150,0.010,0.007,0.6,160,0.007,0.0030,0.6,,,,,

,,,,,200,0.008,0.005,,200,0.005,0.0030,,,,,,

,,,,,,,,,250,0.005,0.0030,,,,,,

,,,,,,,,,315,0.005,0.0030,,,,,,

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制作：LZ,,,,,,,,,,,,,,,,

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