3) DISEÑO DE LOSA ALIGERADA

Datos:f´c = 210.0 kg/cm2

fy =

h = 10 cm

r = 2.0 cm

Wu = 985.00 kg/m2

Peso x Vigueta = 0.39 Tn/m

Nº Tramos = 5

* Primer tanteo a=d/5

A B C D

2.88 2.88 2.45 0.8

1/16 1/10 1/10 1/2

1/14 1/16 1/14

0.051 0.327 0.280 0.168

0.233 0.204 0.169 As =

a =

0.17 1.08 0.93 0.56

0.77 0.68 0.56

1Φ 3/8 1Φ 3/8 1Φ 3/8 1Φ 3/8

1Φ 3/8 1Φ 3/8 1Φ 3/8Varillas (Φ)

4200.0 kg/cm2

Longitudes

(m)

Coeficientes

Momento

(Tn-m)

As (cm2)

)2/(** adfy

MAs

bcf

fyAsa

*`*85.0

*

1º Tanteo 2º Tanteo 3º Tanteo 4º Tanteo 5º Tanteo0.21 0.17 0.17 0.17 0.17

0.05 0.04 0.04 0.04 0.04

Ø (") As (cm2)

1/4 0.32

3/8 0.71

1/2 1.29

5/8 2.00

3/4 2.84