ACERO LONGITUDINAL

1. Colocar dimensiones de la zapata corrida

30.0 cm

4 Ø 3/4 '' As Positivo 1.93 cm²

90.0 cm

2 Ø 1/2" Para evitar el pandeo del estribo

10.57 cm²

60.0 cm

As Negativo 3.84 cm²

9 Ø 1/2 '' 260.0 cm

10.57 cm²

2. Colocar Diametro de Barra Longitudinal asumida, Estribo y Momento.

REFUERZO POSITIVO REFUERZO NEGATIVO ACERO MINIMO:

f`c = 210.00 Kg/cm2 f`c = 210.00 Kg/cm2 ρ min = 0.0024

fy = 4200.00 Kg/cm2 fy = 4200.00 Kg/cm2 As min = 10.57 cm²

b = 260.00 cm b = 30.00 cm Ø barra = 3/4 ''

h = 150.00 cm h = 150.00 cm As = 2.850 cm²

Ø barra = 1/2 '' Ø barra = 1/2 '' Tomamos 4 Ø 3/4 ''

Ø estribo = 3/8 '' Ø estribo = 3/8 '' ACERO MAXIMO

recub. = 2.50 cm recub. = 7.50 cm ρmax = 0.0163

d = 145.91 cm d = 140.91 cm As max = 71.21 cm²

M = 10.64 Tn-m M = 20.22 Tn-m Ø barra = 3/4 ''

a = 0.175 cm a = 3.010 cm As = 2.850 cm²

As = 1.93 cm² As = 3.84 cm² Tomamos 25 Ø 3/4 ''

3. Aceros Negativos y Positivos Finales

ACERO POSITIVO ACERO NEGATIVO

As Positivo 10.57 cm² As Negativo 10.57 cm²

Ø barra = 3/4 '' Ø barra = 1/2 ''

As = 2.850 cm² As = 1.267 cm²

Tomamos 4 Ø 3/4 '' Tomamos 9 Ø 1/2 ''

ACERO TRANSVERSAL

sadm Suelo = 9.000 Tn/m² REFUERZO NEGATIVO

s diseño = 13.500 Tn/m² f`c = 210.00 Kg/cm2

Tomando B = 1.00 m □ Ø 3/8 '' @ 0.3 fy = 4200.00 Kg/cm2

Mom. Neg = 8.93 Tn-m b = 100.00 cm

30.0 cm h = 60.00 cm

Ø barra = 1/2 ''

90.0 cm 1/2 '' @ 0.27 Ø estribo = 3/8 ''

recub. = 7.50 cm

115.0 cm d = 50.91 cm

M = 8.93 Tn-m

60.0 cm a = 1.103 cm

As = 4.69 cm²

260.0 cm Ø barra = 1/2 ''

As = 1.267 cm²

13.50 Tn/m @ = 27.00

Verificar As min y As max

Verificar As min y As max

DISEÑO DEL REFUERZO PARA ZAPATA CORRIDA

VERIFICACION POR CORTANTE

Vu = 15.525 Tn A cara de columna Ø.Vc = Vud =

Wu = 13.50 Tn/m 86.418 Tn > 8.652 Tn Ok

recub. = 7.50 cm

Ø barra = 1/2 ''

Ø estribo = 3/8 ''

b = 260.00 cm

d = 50.91 cm

DISEÑO DE REFUERZO TRANSVERSAL

REFUERZO DENTRO DE LA ZONA DE CONFINAMIENTO

Se colocará refuerzo Transversal por confinamiento a una distancia "2d" medida desde la cara del apoyo.

2d = 2.818 m

Ø estribo = 3/8 ''

La separacion de los estribos debe ser:

S ≤ d/4 = 35.23 cm S = 30.00 cm □ Ø 3/8 '' @ 0.3

S ≤ 30.00 cm

REFUERZO FUERA DE LA ZONA DE CONFINAMIENTO

La separacion de los estribos debe ser:

S = 70.00 cm □ Ø 3/8 '' @ 0.7