マニング公式による流速流量表

鉄筋コンクリートフリューム

１．粗度係数 n=0.014（水路工）※粗度係数は、参照する基準によって異なりますので必ず確認してください。

MATSUSAKA
KOSAN

松阪興産株式会社

鉄筋コンクリートフリューム

マニング（ｍａｎｎｉｎｇ）公式による流速・流量表

V = 1/n × Ｒ2/3 × I1/2
Q=A×V
ここで，

V ： 流速 （m/sec)n ： 粗度係数0.014
R ： 径深 （m) = Ａ/ＰA ： 通水断面積 （m2)
P ： 潤辺 （m）
I ： 水路勾配 （‰) ※1‰（パーミル）＝0.1％
Ｑ ： 流量 （m3/sec)
呼び名
200
250
300,350
400,450
500,560

余裕高50607080901‰(=パーミル）

幅B1mm

余裕高深さH
潤辺Ｐ
通水断面積Ａ1000mm

№1
呼び名
幅Ｂ×深さＨ（mm）
2
通水断面積 Ａ（m )潤辺 Ｐ（m)
径深 Ｒ（m)2/3
Ｒ
粗度係数 n1/2
勾配Ｉ（‰）
Ｉ
100.0
75.0
50.0
40.0
35.0
30.0
25.0
20.0
18.0
16.0
14.0
12.0
10.0
9.0
8.0
7.0
6.0
5.5
5.0
4.8
4.6
4.5
4.4
4.2
4.0
3.8
3.5
3.4
3.0
2.8
2.6
2.5
2.4
2.2
2.0
1.8
1.6
1.5
1.4
1.2
1.0
0.8
0.6

0.31620.27390.22360.20000.18710.17320.15810.14140.13420.12650.11830.10950.10000.09490.08940.08370.07750.07420.07070.06930.06780.0671
0.06630.06480.0632
0.0616
0.05920.05830.05480.05290.05100.05000.04900.04690.04470.04240.04000.03870.03740.0346
0.03160.02830.0245200
210×200
0.026
0.414
0.06280.15800.0140VＱ
3.56873.09062.52352.25702.1113
1.9547
1.7843
1.59601.51411.42751.3353
1.2362
1.12851.07061.00940.94420.87410.83690.79800.78180.76540.75700.74850.73130.71370.6956
0.66760.65800.61810.59710.57540.56420.55280.52930.50470.47880.45140.43700.42220.39090.35680.31920.27640.09270.08030.0656
0.0586
0.05480.05080.04630.04140.03930.03710.03470.03210.02930.02780.02620.02450.02270.02170.02070.02030.01990.01960.01940.01900.01850.01800.01730.01710.01600.01550.01490.01460.01430.01370.01310.01240.01170.01130.01090.01010.00920.00820.0071

250
260×2400.038
0.503
0.07550.17870.0140VＱ
4.03653.49572.85432.55292.38802.21092.01821.8052
1.71251.61461.5103
1.3983
1.27641.21091.14171.06790.9887
0.94660.90260.88430.86570.85620.84670.82720.80730.78680.75510.74430.69910.67540.65080.63820.62530.59870.57080.54150.51050.49430.47760.44210.4036
0.36100.3126

0.15330.13280.1084
0.09700.09070.08400.0766
0.06850.06500.06130.05730.0531
0.04850.04600.04330.04050.03750.03590.03420.03360.03280.03250.03210.03140.03060.02980.02860.02820.02650.02560.02470.02420.02370.02270.02160.02050.01930.01870.01810.01670.01530.01370.0118300
310×275
0.052
0.581
0.08950.20010.0140VＱ
4.51943.91393.19572.85832.67372.47542.25972.0211
1.91741.8077
1.69101.56551.42911.35581.2783
1.1957
1.10701.05991.01050.9901
0.96930.95870.94800.92620.90380.88100.84550.83330.78270.75620.72870.71450.70010.67030.63910.60630.5716
0.55350.53470.49500.45190.40420.35000.23500.20350.16610.14860.13900.12870.11750.10500.0997
0.09400.08790.08140.07430.07050.06640.06210.05750.0551
0.05250.05140.05040.04980.04920.0481
0.04690.04580.04390.04330.04070.03930.03780.03710.03640.03480.03320.03150.02970.02870.02780.02570.02340.02100.0182350
360×3150.073
0.690
0.10580.22370.0140VＱ
5.05264.37573.5727
3.19552.98922.76742.52632.2596
2.14362.02101.89051.7502
1.59771.51581.42911.33681.2376
1.18491.12981.10691.0836
1.07181.05981.03541.01050.98490.94520.93160.87510.84540.81470.79880.78270.74940.71450.67780.63910.61880.59780.55340.50520.45190.39130.36880.31940.26080.2332
0.21820.20200.18440.16490.15640.14750.13800.12770.11660.11060.10430.09750.09030.08640.08240.08080.07910.07820.07730.07550.07370.07180.06890.06800.06380.06170.05940.05830.0571
0.05470.05210.04940.04660.0451
0.04360.04030.03680.03290.0285№2呼び名
幅Ｂ×深さＨ(mm)2
通水断面積 Ａ（m )潤辺 Ｐ（m)
径深 Ｒ（m)2/3
Ｒ
粗度係数 n1/2
勾配Ｉ（‰）
Ｉ
100.0
75.0
50.0
40.0
35.0
30.0
25.0
20.0
18.0
16.0
14.0
12.0
10.0
9.0
8.0
7.0
6.0
5.5
5.0
4.8
4.6
4.5
4.4
4.2
4.0
3.8
3.5
3.4
3.0
2.8
2.6
2.5
2.4
2.2
2.0
1.8
1.6
1.5
1.4
1.2
1.0
0.8
0.6

0.31620.27390.22360.20000.18710.17320.15810.14140.13420.12650.11830.10950.10000.09490.08940.08370.07750.07420.07070.06930.06780.0671
0.06630.06480.0632
0.0616
0.05920.05830.05480.05290.05100.05000.04900.04690.04470.04240.04000.03870.03740.0346
0.03160.02830.0245400
425×3520.091
0.768
0.11850.24120.0140VＱ
5.44914.71903.85313.4463
3.22372.98452.72452.43692.31182.17962.03881.88761.72311.6347
1.5412
1.4416
1.33471.27791.2184
1.19381.1687
1.15591.1430
1.11671.08981.0622
1.01941.0047
0.94380.91180.8786
0.86150.84410.80820.7706
0.73100.68920.66730.64470.59690.54490.48730.42200.49580.42940.3506
0.31360.29330.27150.24790.22170.21030.19830.18550.17170.15680.14870.14020.13110.12140.11620.11080.10860.10630.10510.10400.1016
0.0991
0.0966
0.0927
0.09140.08580.08290.07990.07830.07680.07350.0701
0.06650.06270.06070.0586
0.05430.04950.04430.0384450
480×3900.118
0.877
0.13450.26260.0140VＱ
5.93095.13634.19383.75103.50883.24852.96542.65242.51632.37232.21912.05451.87551.7792
1.67751.56911.45271.39091.3262
1.29941.27201.25811.24401.2154
1.18611.1561
1.1095
1.0936
1.0272
0.99240.95630.93770.91880.87970.83870.79570.75020.72630.70170.64970.59300.53040.45940.69980.60600.49480.4426
0.41400.38330.34990.31290.29690.27990.26180.24240.22130.20990.19790.18510.17140.16410.15640.15330.15000.14840.14670.14340.13990.13640.13090.12900.1212
0.11710.11280.1106
0.10840.10380.09890.09380.08850.08570.08280.0766
0.06990.06250.0542500
530×4250.141
0.955
0.1476
0.27930.0140VＱ
6.30985.46444.46173.99063.73293.45603.15492.82182.67702.52392.36092.18571.9953
1.89291.7846
1.6694
1.54551.47971.41091.38241.3533
1.33851.32351.2931
1.26191.23001.1804
1.16341.09281.05581.0174
0.9976
0.97750.93580.89230.84650.79810.77270.74650.69120.63090.56430.48870.88960.77040.62900.5626
0.52630.48720.44480.39780.37740.35580.33280.30810.28130.26680.25160.23530.21790.2086
0.19890.19490.19080.18870.18660.18230.17790.17340.16640.16400.15400.14880.14340.14060.13780.13190.12580.11930.11250.10890.1052
0.09740.08890.07950.0689560
600×480
0.186
1.100
0.16910.30580.0140VＱ
6.90695.98154.88394.36834.0861
3.78303.45343.08882.93032.76272.58432.39262.18412.07201.9535
1.8274
1.69181.61981.54441.5132
1.4813
1.4651
1.44881.41551.3813
1.34641.29211.2735
1.1963
1.1557
1.1137
1.09201.07001.0244
0.97670.92660.87360.84590.81720.75660.6906
0.61770.53501.2846
1.11250.90840.81250.76000.7036
0.64230.57450.54500.51380.48060.44500.40620.38530.36330.33980.31460.30120.28720.28140.27550.27250.26940.26320.25690.25040.2403
0.23680.22250.21490.20710.20310.19900.19050.18160.17230.16240.15730.15190.14070.12840.11480.0995