Usando como referencia las figuras geomΓ©tricas del cuadro, realizare los ejercicios requeridos.
1. n= 0.013(concreto) s= 0.0020
0.5m 0.9m
Γrea :
= by (0,9m) (0.5m) = 0.45m2
PerΓmetro Mojado: = b+2y
Ancho Superior:
(0.9m) + 2 (0.5m) = 1.9 m
y= 0.5m
Radio HidrΓ‘ulico: =
ππ¦
(0.9)(0.8) (0.9)+2(0.8)
π+2π¦
Profundidad HidrΓ‘ulica :
Hallando el Caudal (Q)
= 0.237m
y = 0.5m
-
Formula de Manning
S= 0.0015, n= 0.013 π¨. πΉππ\π . πΊπ\π πΈ= π
(π. ππ). (π. πππ)π\π . (π. ππππ)π\π πΈ= π. πππ
El caudal es: π = 0.593 π3 \π Velocidad = Q/A = 1.317 m/s
2. n= 0.013(concreto) s=0.0015
1.0 2 m 2.5 m
Γrea:
= (2.5m + (2)(1))3 = ππ. π ππ
(b + zy)y
PerΓmetro Mojado: b + 2y(1 + z2)1/2 = 2.5 + (2)(1)(1 + 22)1/2 = 6.972 m Ancho:
b + 2zy = 2.5 + (2)(2)(1) = 6.5m
Radio HidrΓ‘ulico:
(π+ππ)π π
π+ππ (π+ππ ) /π (π+ππ)π
Profundidad :
USANDO :
π+πππ
=
=
ππ.πππ π
π.π+π(π) (π+ππ ) /π ππ.π ππ
= 1.936 m
= 2.077m
π.π+π(π)(π)
Formula de Manning
S= 0.0013, n= 0.013 π¨. πΉππ\π . πΊπ\π πΈ= π
(ππ. π). (π. πππ)π\π . (π. ππππ)π\π πΈ= π. πππ
Donde Q es = π = 62.475 π3 \π
Velocidad = Q/A = 4.62 m/s
3. n = 0.022 (metal ondulado) S = 0.0010
0.8 m 1.6
1.6
zy2
Γrea:
PerΓmetro Mojado: Ancho:
= (0.8)(1.6)2 = 2.048 m2 2y (1 + z2)1/2
= 2(1.6) (1 + 0.82)1/2 = 4.098m
2zy = 2(0.8)(1.6) = 2.56 m
Radio HidrΓ‘ulico:
π
π (π+ ππ ) /π π
Profundidad:
USANDO:
ππ
π
= A/P = 0.499 m
= 1.6/2 = 0.8 m
Formula de Manning
S= 0.0008, n= 0.022
π¨. πΉππ\π . πΊπ\π πΈ= π
(π. πππ). (π. πππ)π\π . (π. ππππ)π\π πΈ= π. πππ
Donde Q es = π = 1.852 π3 \π
Velocidad = Q/A = 0.904 m/s
4. n = 0.010 (vidrio) S = 0 .0015
1.2m
0.9 m 235
(π½βππππ½)π
π π
Γrea:
π
=
(πππβππππππ)π.ππ
PerΓmetro Mojado:
Ancho:
π
= ππ. ππππ
= (1,2)(235)/2 = 141 m
= 1.2 sen(235/2) = 1.06 m
Radio A/P = 0.301 m
HidrΓ‘ulico:
Profundidad:
USANDO:
= 39.87 m
Formula de Manning
S= 0.0019, n= 0.010 (vidrio) πΈ=
π¨. πΉππ\π . πΊπ\π π
πΈ=
(ππ. ππ). (π. πππ)π\π . (π. ππππ)π\π π. πππ
Donde Q es = π = 73.824 π3 \π
Velocidad = Q/A = 1.739 m/s
=