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Chapter 6 LIfelines
Figure 6-1. Damaged
Gulaotal overhead
water reservoir. It devel-
oped flexure cracks
along the perimeter near
the base.
Gulaotal Overhead Water Reservoir
A5 lac gallon (2 270 kilo liters) overhead concrete water reservoir, about 10 year
old, in Gulaotal area developed cracks in its circular shaft type staging (Fig. 6-1).
Flexure cracks were observed all around the staging near the base and some diag
onal cracks originating from corners of openings (Fig. 6-2). Following the earth
quake the city officials stopped the filling of the tank which severely affected the
supply of drinking water in the tank's feeding area. The facility was closed and a
notice was displayed advising people to stay clear of the damaged tank as a pre
caution. (Fig. 6-3). However, the tank was not in any danger of imminent col
lapse.
A preliminary calculation (see Appendix below) showed that the staging of the
tank could withstand about 3 times of the code (IS:1893-1984) specified lateral
Jabalpur Earthquake of May 22, 1997 86
