METODO DE LAS PARCELAS

1. Dado un terreno cualquiera se determina la cuadricula. Si la distribucin es uniforme se puede considerar como una parcela individual, si la distribucin es irregular se puede considerar dos o ms parcelas.

2. Se calcula el centroide (centro de gravedad) el que se obtiene aplicando la siguiente expresin: = [Z] / N donde: Z= sumatoria de cotas naturales. N= Numero de vrtices.

3. Ubicado el centroide se recomienda trazar los ejes por el terreno a nivelar.

4. Determinar la cuadricula y los ejes de la parcela en estudio se determina su rea de influencia.

5. Para solucionar ese mtodo debemos tomar en cuenta la siguiente tabla.

29.768

29.735

29.710

29.733

29.760

29.705

29.675

29.602

29.737

29.795

29.797

29.479

29.695

29.723

29.695

29.543

30.04529.86529.89330.10430.00029.91629.90329.94929.851

CUADRICULA7.5 m15.00 m15.00 m15.00 m7.5 m

N= 25 Z= 744.678 b-=z/N b-= 744.678/25 b-=29.78712

CORDCOTASALTURAAREAVOLUMEN

ZibCRCRCR

A13029.787120.2128856.2511.9745

229.9160.12888112.514.499

329.9030.11588112.513.0365

429.9490.16188112.518.2115

529.8510.0638856.253.59325

B130.1040.31688112.535.649

229.7680.019122254.302

329.7350.0521222511.727

429.7100.07722517.352

529.7330.05412112.56.0885

C129.8930.10588112.511.9115

229.7600.0272256.102

329.7050.0821222518.477

429.6750.1121222525.227

529.6020.18512112.520.826

D129.8650.07788112.58.7615

229.7370.0501222511.277

329.7950.007882251.773

429.7970.009882252.223

529.4790.30812112.534.6635

E130.0450.2578856.2514.50575

229.6950.09212112.510.3635

329.7230.06412112.57.2135

429.6950.09212112.510.3635

529.5430.2441256.2513.73175

1293.752306.25136.1385197.71425

COMPROVACION.197.71425

== 0.68856

Debe estar en el rango de 1.1 1.3

Correccin:b-1 = centriode nuevob-1 = b- z

= 1.2 = 1.2 * VR - VC

AC + 1,2 * AR

Z =

1.2 * (197.71425) - 136.1385

1293.75 + 1.2 * (2306.25)

Z = AZ = 0.024898

b-1 = 29.78712 0.024898

b-1 = 29.762

CORDCOTASALTURAAREAVOLUMEN

ZibCRCRCR

A13029.7620.23856.2513.3875

229.9160.154112.517.325

329.9030.141112.515.8625

429.9490.187112.521.0375

529.8510.08956.255.00625

B130.1040.342112.538.475

229.7680.0062251.35

329.7350.0272256.075

429.710.05222511.7

529.7330.029112.53.2625

C129.8930.131112.514.7375

229.760.0022250.45

329.7050.05722512.825

429.6750.08722519.575

529.6020.16112.518

D129.8650.103112.511.5875

229.7370.0252255.625

329.7950.0332257.425

429.7970.0352257.875

529.4790.283112.531.8375

E130.0450.28356.2515.91875

229.6950.067112.57.5375

329.7230.039112.54.3875

429.6950.067112.57.5375

529.5430.21956.2512.31875

1518.752081.25169.9875141.13125

= = 1.2044 VC

VR

Debe estar en el rango de 1.1 1.3

COTAS NATURALES CORREGIDAS

COTAS NATURALES CORREGIDAS

PUNTcotas natural (+ -) alturacotas corregida

C1300.23829.762

C229.9160.15429.762

C329.9030.14129.762

C429.9490.18729.762

C529.8510.08929.762

C630.1040.34229.762

C729.7680.00629.762

C829.7350.02729.762

C929.710.05229.762

C1029.7330.02929.762

C1129.8930.13129.762

C1229.760.00229.762

C1329.7050.05729.762

C1429.6750.08729.762

C1529.6020.1629.762

C1629.8650.10329.762

C1729.7370.02529.762

C1829.7950.03329.762

C1929.7970.03529.762

C2029.4790.28329.762

C2130.0450.28329.762

C2229.6950.06729.762

C2329.7230.03929.762

C2429.6950.06729.762

C2529.5430.21929.762

29.76229.768

C=0.23829.76229.735

C=O.15429.76229.710

C=0.14129.762 29.76229.733

C=0.187 C=0.089

29.76229.760

C=0.34229.76229.705

C=0.00629.76229.76229.675

R=0.02729.762 29.76229.76229.602

R=0.052 R=0.029

C=0.13129.76229.79529.737

R=0.00229.797

R=0.05729.762

29.479

R=0.087 R=0.160

29.76229.695

C=0.10329.76229.723

R=0.02529.76229.695

C=0.03329.762 29.76229.543

C=0.035 R=0.283

COTAS CORREGIDAS30.04529.86530.10429.91629.90329.94929.851

A1A2 A3A4A5 15 m15 m15 m15 mEDCBA29.76229.89330.000

29.76229.762 29.762 29.762 29.762 C=0.283R=0.06 R=0.039 R=0.067 R=0.219

PERFILES DEL TERRENO