4. mes100Chart 18.A3 Inlet Control Nomogragh - Box Culvert

	A	B	C	D	E	F	G	H	I	K	L	N
1	MZ
2	Equation	HWi/D = c[(KuQ)/(AD^(0.5))]^2 + Y + Ks*S
3
4	HWi	Headwater depth (m)
5	D	Diameter of culvert barrel (m)
6	c	Constant
7	Ku	Unit Conversion, 1.811 SI unit
8	Q	Discharge (m3/s)
9	A	Full cross sectional area of culvert barel (m2)
10	Y	Constant
11	Ks	Slope correction, -0.5
12	S	Culvert barrel slope (m/m)
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15		Wingwall Flare	K	c	Y	Ku (SI unit)
16	[1]	30° - 75°	0.026	0.0347	0.81	1.811
17	[2]	90°	0.061	0.04	0.8
18	[3]	0°	0.061	0.0423	0.82
19
20									Result from Design Chart
21	Assume	Assume	Q = Q/B*B
22	B	Q/B	Q	D	A	S	Inlet Type [1]		Inlet Type [2]		Inlet Type [3]
23	B	Q/B	Q	D	A	S	HWi/D (Equation)	HWi/D (Chart 18.A3)	HWi/D (Equation)	HWi/D (Chart 18.A3)	HWi/D (Equation)	HWi/D (Chart 18.A3)
24	1.5	3.2	4.8	1.2	1.800	0.0133	1.49	1.49	1.57	1.60	1.64	1.71
25	2	2	4	0.8	1.600	0.0133	1.71	1.70	1.82	1.81	1.90	1.91
26	4	4	16	1.5	6.000	0.0133	1.36	1.31	1.42	1.42	1.47	1.5
27	6	3	18	1.5	9.000	0.0133	1.12	1.10	1.14	1.12	1.18	1.12
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