User:Jcreer/SMS:SRH-2D Culvert Table

Culvert Coefficients

Entrance Type	Culvert inlet coeff option	m(in)	Kp	M	Cp	Y
mitered	Concrete – Circular – Headwall; square edge	0.7	0.3153	2	1.2804	0.67
mitered	Concrete – Circular – Headwall; grooved edge	0.7	0.2509	2	0.9394	0.74
mitered	Concrete – Circular – Projecting; grooved edge	0.7	0.1448	2	1.0198	0.69
mitered	Cor metal – Circular – Headwall	0.7	0.2509	2	1.2192	0.69
mitered	Cor metal – Circular – Mitered to slope	0.7	0.2112	1.33	1.4895	0.75
mitered	Cor metal – Circular – Projecting	0.7	0.4593	1.5	1.779	0.54
mitered	Concrete – Circular – Beveled ring; 45 deg bevels	0.7	0.1379	2.5	0.9651	0.74
mitered	Concrete – Circular – Beveled ring; 33.75 deg bevels	0.7	0.1379	2.5	0.7817	0.83
mitered	Concrete – Rectangular – Wingwalls; 30–75 deg flares; square edge	0.7	0.1475	1	1.2385	0.81
	Concrete – Rectangular – Wingwalls; 90 and 15 deg flares; square edge		0.2242	0.75	1.2868	0.8
	Concrete – Rectangular – Wingwalls; 0 deg flares; square edge		0.2242	0.75	1.3608	0.82
	Concrete – Rectangular – Wingwalls; 45 deg flares; beveled edge		1.623	0.667	0.9941	0.8
	Concrete – Rectangular – Wingwalls; 18–33.7 deg flare; beveled edge		1.5466	0.667	0.801	0.83
	Concrete – Rectangular – Headwall; 3/4 in chamfers		1.6389	0.667	1.2064	0.79
	Concrete – Rectangular – Headwall; 45 deg bevels		1.5752	0.667	1.0101	0.82
	Concrete – Rectangular – Headwall; 33.7 deg bevels		1.5466	0.667	0.8107	0.865
	Concrete – Rectangular – Headwall; 45 deg skew; 3/4 in chamfers		1.6611	0.667	1.2932	0.73
	Concrete – Rectangular – Headwall; 30 deg skew; 3/4 in chamfers		1.6961	0.667	1.3672	0.705
	Concrete – Rectangular – Headwall; 15 deg skew; 3/4 in chamfers		1.7343	0.667	1.4493	0.68
	Concrete – Rectangular – Headwall; 10–45 deg skew; 45 deg bevels		1.5848	0.667	1.052	0.75
	Concrete – Rectangular – Wingwalls; non-offset 45 deg flares; 3/4 in chamfers		1.5816	0.667	1.0906	0.803
	Concrete – Rectangular – Wingwalls; non-offset 18.4 deg flares; 3/4 in chamfers		1.5689	0.667	1.1613	0.806
	Concrete – Rectangular – Wingwalls; non-offset 18.4 deg flares; 30 deg skewed barrel		1.5752	0.667	1.2418	0.71
	Concrete – Rectangular – Wingwalls; offset 45 deg flares; beveled top edge		1.5816	0.667	0.9715	0.835
	Concrete – Rectangular – Wingwalls; offset 33.7 deg flares; beveled top edge		1.5752	0.667	0.8107	0.881
	Concrete – Rectangular – Wingwalls; offset 18.4 deg flares; beveled top edge		1.5689	0.667	0.7303	0.887
	Cor metal – Rectangular – Headwall		0.267	2	1.2192	0.69
	Cor metal – Rectangular – Projecting; thick wall		0.3023	1.75	1.3479	0.64
	Cor metal – Rectangular – Projecting; thin wall		0.4593	1.5	1.5956	0.57
	Concrete – Horizontal ellipse – Headwall; square edge		0.3217	2	1.2804	0.67
	Concrete – Horizontal ellipse – Headwall; grooved edge		0.1379	2.5	0.9394	0.74
	Concrete – Horizontal ellipse – Projecting; grooved edge		0.1448	2	1.0198	0.69
	Cor metal – Pipe arch (18in corner) – Headwall		0.267	2	1.5956	0.57
	Cor metal – Pipe arch (18in corner) – Mitered to slope		0.1702	1	1.4895	0.75
	Cor metal – Pipe arch (18in corner) – Projecting		0.4593	1.5	1.5956	0.53
	Structural plate – Pipe arch (18in corner) – Projecting		0.3998	1.5	1.5667	0.55
	Structural plate – Pipe arch (18in corner) – Headwall; square edge		0.2799	2	1.1613	0.66
	Structural plate – Pipe arch (18in corner) – Headwall; beveled edge		0.0965	2	0.8493	0.75
	Structural plate – Pipe arch (31in corner) – Projecting		0.3998	1.5	1.5667	0.55
	Structural plate – Pipe arch (31in corner) – Headwall; square edge		0.2799	2	1.1613	0.66
	Structural plate – Pipe arch (31in corner) – Headwall; beveled edge		0.0965	2	0.8493	0.75
	Cor metal – Arch – Headwall		0.267	2	1.2192	0.69
	Cor metal – Arch – Mitered to slope		0.9651	2	1.4895	0.75
	Cor metal – Arch – Projecting		0.4593	1.5	1.5956	0.57
	Concrete – Circular – Tapered throat		1.3991	0.555	0.6305	0.89
	Cor metal – Circular – Tapered throat		1.576	0.64	0.9297	0.9
	Concrete – Rectangular – Tapered throat		1.5116	0.667	0.5758	0.97