AMENDMENT
AMENDMENT
EN 1062-3-2008 or
10* Water Permeability of Coating w< 0.1 kg/m2 . h0.5
similar
Min. 2 h to 72 h or as per
manufacturer’s specification with
11 Re-coatability
the approval of the Engineer in
Charge
12 Tensile Strength > 1.5 N / mm2 ASTM D 638
13 Elongation > 200% ASTM D 638
Pass: No Damage or Blistering after
14 Salt Spray Test ASTM B 117
atleast 400 Hours Exposure
15 Crack Bridging Capacity > 2.0 mm ASTM C1305 – 2008
Notification No.19
Amendment No.1/IRC:SP:65 /November, 2018 (Effective from 31st January, 2019)
To
IRC:SP:65-2018 “Guidelines for Design and Construction of Segmental Bridges (First Revision)”
S.N. Clause No. For Read
Page No.
1. 3.2.1 The stresses at the least compressive face The stresses at the least compressive face
(Page 3) under Rare Combination of Loads shall be under Rare Combination of Loads shall be
limited to minimum residual compression limited to minimum residual compression of
of 0.5 MPa in case of epoxy jointed precast 0.5 MPa at joint locations in case of epoxy
segments. jointed precast segments.
2. 3.2.2 The limits specified in clause 12.2.2 of The limits specified in clause 12.2.2 of
(Page 3) IRC:112 apply to all types of segmental IRC:112 apply to all types of segmental
bridges except longitudinal reinforcement bridges except in the longitudinal
of precast segmental bridges, where these reinforcement of precast segmental bridges,
stress checks have no relevance. where these stress checks have no relevance.
3. 3.3 The crack width limitations given in The crack width limitations given in clause
(Page 3 & 4) clause 12.3 of IRC:112 apply to all types 12.3 of IRC:112 apply to all types of
of segmental bridges except at joints of segmental bridges except at joints of epoxy
precast segmental structure where minimum jointed precast segmental structure where
compressive stress limitations of para 3.2.1 minimum compressive stress limitations of
above apply. The decompression limits of para 3.2.1 above apply. The decompression
Table 12.1 of IRC:112 apply to Prestressed limits of Table 12.1 of IRC:112 apply to
members with bonded tendons. Prestressed members with bonded tendons
for structures built in severe, very severe
and extreme environmental conditions.
4. 3.5.2.2 For Structure with external unbonded tendons, For Structure with external unbonded
Page (4) the shear resistance shall be calculated as per tendons, the shear resistance shall be
clause 10.3.3.4 (2) of IRC:112. calculated as per clause 10.3.3.4 (2) of
For this purpose, the equation 10.18 of IRC:112.
IRC:112 shall be modified as follows:
VNS/0.85 = VED <hredcbwvfed/ (cotѳ + tanѳ)
And equation 10.19 modified as follows:
ASW/S=VED/hredcvfed cotѳ
68 INDIAN HIGHWAYS JANUARY 2019
