Amendment to IRC:81-1997

Amendment to IRC:81-1997
Amendment No. 1/IRC:81-1997/August, 2014
To
IRC:81-1997 “Guidelines for Strengthening of Flexible Road Pavements
Using Benkelman Beam Deflection Technique” (First Revision)
S. No.
Clause No. &
Page No.
1.
7.5
(Page 20)
2.
Annexure 1
Calculations
S. No. (5)
(Page 22)
For
Read
From structural considerations, the From structural considerations, the
recommended minimum bituminous recommended minimum bituminous
overlay thickness is 50 mm bituminous overlay thickness is 40 mm.
macadam with an additional surfacing
course of 50 mm DBM or 40 mm
bituminous concrete.
The rebound deflection (%) (i.e. col. 9 of Delete the sentence.
Table 3) shall be the twice of the XT
value.
Errata to IRC:37-2012
Errata No. 1/IRC:37-2012/August, 2014
To
IRC:37-2012 “Tentative Guidelines for the Design of Flexible Pavements”
S. No. Clause No. &
Page No.
1.
52
6.5.2
(Page 16)
(Eq. 6.6)
For
Read
A. Fatigue Life in Terms of Standard
Axles
A. Fatigue Life in Terms of Standard
Axles
12
 (11300/E.0804 +191 
N = RF 

εt


12
 (113000/E 0.804 +191 
N = RF 

εt


INDIAN HIGHWAYS, October 2014

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