concrete block paving cbp

Concrete Block Paving (CBP)

Shafik Jendia Professor of Highway Engineering

Faculty of Engineering Islamic University of Gaza

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. . Concrete Block Paving

7

Example: Using (J & K) procedure, design a concrete block pavement for the urban road (drawing required). - 18 kip ESAL = 0.7 x 106 - CBR = 10 - R = 95 % - So = 0.35 - PSI = 2.0 - M2 , M3 = 1.0 Solution:

1. Without sub base 18 kip ESAL = 0.7 x 106 Equivalent Thickness of Asphalt = 9.5 cm (Table 1) Block (Stone) Thickness = 8.0 cm (Table 1)

SN = 2.6 (Figure 3) SN = a1 d1 + M2 a2 d2 2.6 = 0.42 x (9.5/ 2.54) +1.0 x 0.14 d2 d2 = 7.35 inch = 18.7 cm 20 cm

Pavement Block (Stone) = 8.0 cm Sand course = 3.0 cm Crushed base course = 20 cm 1. With sub base 18 kip ESAL = 0.7 x 106 Equivalent Thickness of Asphalt = 9.5 cm (Table 1) Block (Stone) Thickness = 8.0 cm (Table 1)

SN = a1 d1 + M2 a2 d2 + M3 a3 d3 SN = 0.42 x (9.5/ 2.54) +1.0 x 0.14 x (15/2.54) + 1.0 x 0.09 x (10/2.54) SN = 2.75 2.6 Pavement Block (Stone) = 8.0 cm Sand course = 3.0 cm Crushed base course = 15 cm Sub base = 10 cm


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elpmaxE .oiM 07.0 = 81W LASE % 59 = R 53.0 = oS isp 00051 = RM 0.2 = ISP 06.2 = NS

concrete block paving cbp

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