DISEÑO DE LOSA MACIZA

1.-DATOS INICIALES:

f'c: 280 Kg/cm2fy: 4200 Kg/cm2

S/C : 300 Kg/m2Tabiqueria: 120 Kg/m2Acabados: 100 Kg/m2

Niveles: 2 m

D VA -(25X25) VA -(25X25) 0.25

VP-

101(

25X4

0)

VP-

101(

25X4

0)

VIG

A T

VP-

101(

25X4

0)

4.20

C VA -(25X25) VA -(25X25) 0.25

VP-

101(

25X4

0)

VP-

101(

25X4

0)

VP-

101(

25X4

0)

3.00

B VA -(25X25) VA -(25X25) 0.25

VP-

101(

25X4

0)

VP-

101(

25X4

0)

VP-

101(

25X4

0)

4.5

A VA -(25X25) VA -(25X25) 0.25

0.25 6.0 0.3 5.5 0.25

1 2 3

2.-MODELO ESTRUCTURAL:

4.50 3.00 4.20

4.50 3.00 4.20

3.-PREDIMENSIONAMIENTO:

Luz mayor: 4.50 m

t = 16 m

4.-METRADOS DE CARGAS:

Peso propio : 0.384 Tn/m CALCULO DE W ULTIMOSTabiqueria : 0.120 Tn/mAcabados : 0.100 Tn/m Wu1 1.416 Tn/m

DC 0.604 Tn/m Wu2 0.906 Tn/mDL 0.300 Tn/m

5.-CALCULO DE RIGIDEZ Y FACTOR DE DISTRIBUCION :

Rigidez0.167 0.333 0.179

Factor de Distribucion1.000 0.333 0.651 1.000

0.667 0.349

6.-CALCULO DE MOMENTO DE EMPOTRAMIENTO PARA Wu1 Y Wu2 :

ME CUANDO ACTUA LA CARGA Wu1 ME CUANDO ACTUA LA CARGA Wu2ME (AB) -2.39 ME (BA) 2.39 ME (AB) -1.53 ME (BA) 1.53ME (BC) -1.06 ME (CB) 1.06 ME (BC) -0.68 ME (CB) 0.68ME (CD) -2.08 ME (DC) 2.08 ME (CD) -1.33 ME (DC) 1.33

7.-CALCULO DE MOMENTOS MAXIMOS POSITIVOS Y NEGATIVOS :

7.1.- CALCULO DEL MAXIMO MOMENTO NEGATIVO

1.416 Tn/m

1.000 0.333 0.667 0.651 0.349 1.000-2.39 2.39 -1.06 1.06 -2.08 2.082.39 1.19 -1.04 -2.080.00 -0.84 -1.68 1.342 0.719 0.00

K AB K BC K CD

FD AB FD BA FD CB FD DC

FD BC FD CD

𝑡=(𝑙𝑢𝑧 𝑚𝑎𝑦𝑜𝑟)/30 (𝑙𝑢𝑧 𝑚𝑎𝑦𝑜𝑟 )/25

0.671 -0.841-0.22 -0.45 0.55 0.292.52 -2.52 2.11 -2.11

TRAMO AB TRAMO BC TRAMO CDW 1.42 W 1.42 W 1.42L 4.50 L 3.00 L 4.20

V ab 2.626 V bc 2.261 V cd 3.476V ba 3.746 V cb 1.987 V dc 2.471

x 1.85 x 1.596 x 2.455M max. 2.435 M max. 1.80 M max. 4.267

7.2.- CALCULO DEL MAXIMO MOMENTO POSITIVO

1.416 Tn/m0.906 Tn/m

1.000 0.333 0.667 0.651 0.349 1.000-2.39 2.39 -0.68 0.68 -1.33 1.332.39 1.19 -0.67 -1.330.00 -0.97 -1.94 0.86 0.46 0.00

0.429 -0.97-0.14 -0.29 0.63 0.342.47 -2.47 1.20 -1.20

TRAMO AB TRAMO BC TRAMO CDW 1.42 W 0.91 W 0.91L 4.50 L 3.00 L 4.20

V ab 2.636 V bc 1.783 V cd 2.188V ba 3.736 V cb 0.935 V dc 1.617

x 1.86 x 1.968 x 2.415M max. 2.5 M max. 1.75 M max. 2.643

1.416 Tn/m0.906 Tn/m

1.000 0.333 0.667 0.651 0.349 1.000-1.53 1.53 -0.68 0.68 -2.08 2.081.53 0.76 -1.04 -2.080.00 -0.54 -1.08 1.59 0.85 0.00

0.80 -0.54-0.27 -0.53 0.35 0.191.49 -1.49 2.08 -2.08

TRAMO AB TRAMO BC TRAMO CDW 0.91 W 0.91 W 1.42L 4.50 L 3.00 L 4.20

V ab 1.707 V bc 1.162 V cd 3.469V ba 2.37 V cb 1.556 V dc 2.478

x 1.88 x 1.282 x 2.45M max. 1.609 M max. 0.74 M max. 4.25

1.416 Tn/m0.906 Tn/m 0.906 Tn/m

1.000 0.333 0.667 0.651 0.349 1.000-1.53 1.53 -1.06 1.06 -1.33 1.331.53 0.76 -0.67 -1.330.00 -0.41 -0.82 0.609 0.326 0.00

0.305 -0.41-0.10 -0.20 0.27 0.141.78 -1.78 1.53 -1.53

TRAMO AB TRAMO BC TRAMO CDW 0.91 W 1.42 W 0.91L 4.50 L 3.00 L 4.20

V ab 1.643 V bc 2.208 V cd 2.266V ba 2.434 V cb 2.04 V dc 1.539

x 1.81 x 1.56 x 2.502M max. 1.49 M max. 1.72 M max. 2.835

1.416 Tn/m 1.416 Tn/m0.906 Tn/m

1.000 0.333 0.667 0.651 0.349 1.000-2.39 2.39 -0.68 0.68 -2.08 2.082.39 1.19 -1.04 -2.080.00 -0.97 -1.94 1.591 0.852 0.00

0.795 -0.968

-0.27 -0.53 0.63 0.342.35 -2.35 1.93 -1.93

TRAMO AB TRAMO BC TRAMO CDW 1.42 W 0.91 W 1.42L 4.50 L 3.00 L 4.20

V ab 2.664 V bc 1.499 V cd 3.434V ba 3.708 V cb 1.219 V dc 2.514

x 1.88 x 1.654 x 2.425M max. 2.5 M max. 1.24 M max. 4.163

1.416 Tn/m0.906 Tn/m

1.000 0.333 0.667 0.651 0.349 1.000-2.39 2.39 -1.06 1.06 -1.33 1.332.39 1.19 -0.67 -1.330.00 -0.84 -1.68 0.609 0.326 0.00

0.305 -0.841-0.10 -0.20 0.55 0.292.64 -2.64 1.38 -1.38

TRAMO AB TRAMO BC TRAMO CDW 1.42 W 1.42 W 0.91L 4.50 L 3.00 L 4.20

V ab 2.599 V bc 2.545 V cd 2.231V ba 3.773 V cb 1.703 V dc 1.574

x 1.84 x 1.798 x 2.462M max. 2.385 M max. 2.29 M max. 2.746

1.416 Tn/m0.906 Tn/m

1.000 0.333 0.667 0.651 0.349 1.000-1.53 1.53 -1.06 1.06 -2.08 2.081.53 0.76 -1.04 -2.080.00 -0.41 -0.82 1.342 0.719 0.00

0.671 -0.41

-0.22 -0.45 0.27 0.141.66 -1.66 2.26 -2.26

TRAMO AB TRAMO BC TRAMO CDW 0.91 W 1.42 W 1.42L 4.50 L 3.00 L 4.20

V ab 1.67 V bc 1.924 V cd 3.512V ba 2.407 V cb 2.324 V dc 2.435

x 1.84 x 1.358 x 2.48M max. 1.539 M max. 1.31 M max. 4.355

8.-CALCULO DE ENVOLVENTE: 9.-CALCULO DE ACERO:

NUDO MOMENTO (-) MOMENTO (+) FORMULASA 1.19 tn.mB 2.64 tn.mC 2.26 tn.mD 1.04 tn.m =∅ 0.9 Por flexion

AB - 2.51 tn.m =∅ 0.85 Por cortanteBC - 2.29 tn.m i =β 0.85CD - 4.35 tn.m b =ρ 0.0283

9.-CALCULO DE ACERO NEGATIVO Y POSITIVO:

A AB B BC C CD DMu 1.19 tn.m 2.51 tn.m 2.64 tn.m 2.29 tn.m 2.26 tn.m 4.35 tn.m 1.04 tn.m

d 13 cm 13 cm 13 cm 13 cm 13 cm 13 cm 13 cm0.44 0.93 0.99 0.85 0.84 1.67 0.38

As 2.47 5.29 5.59 4.81 4.75 9.47 2.150.44 0.93 0.99 0.85 0.84 1.67 0.38

As max 36.83 36.83 36.83 36.83 36.83 36.83 36.83As min 2.34 2.34 2.34 2.34 2.34 2.34 2.34Cond. ok ok ok ok ok ok verif.As col 2.47 5.29 5.59 4.81 4.75 9.47 2.34

col∅ 1/2 3/4 3/4 3/4 3/4 1 1/2Cant. 2 2 2 2 2 2 2

S 52 54 51 59 60 54 85S max 45 45 45 45 45 45 45

a asum.

A calc.

As=Mu/( fy (d −a/2)" ∅ " ) a=(As fy)/(0.85 f^′ c b)

DISEÑO DE LOSA MACIZA

ME CUANDO ACTUA LA CARGA Wu21.530.681.33

FORMULASa=(As fy)/(0.85 f^′ c b)