Download - Metodo de Las Parcelas
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