Water tank collapse findings

Vigyan Ashram Pabal

Introduction2000 liters water tank near social park collapsed recently.Here are some findings regarding that collapse

Causes and its consequences are discussed in this presentation

Purpose of this presentation document is to make a reference document such that in future such things doesn’t happen again

Causes of collapseCause no 1The constructed cemented structure was not properly

watered

Due to this following thing[s] happened

Between the Cement base and internal Basalt(Murum) layer, there was a gap developed

Causes of water tank collapseCause no 2Cement usage was less and cement was not tested in

terms of force per cubic cm

ConsequencesThe constructed cement structure was weaker and was

not able to hold the desired loadDue to air gap developed between cement and basalt

layer, it could not bear the load

Causes of Tank collapse The following image explains cause no 2 in details

Carefully look at the right leg of the fabricated iron struture.

Causes of water tank collapseCause no 3The base of iron structure fabricated were not in a even

levelConsequences

The whole load was concentrated on just one pointDue to this load , the base of cemented structure cracked

and the fabricated structure on which the tank was placed was unbalanced

Causes of water tank collapseThe following image describes the cause no 3 in detail

Again carefully look at the right side of image

Causes of water tank collapseCause no 4The iron stand fabricated for housing the water tank

overhead , plates taken were not of adequate size

ConsequencesAl load of water tank was concentrated at one point

Causes of water tank collapseFollowing image describes about cause no 4

Please have a look at the plates and collapsed tank

Causes of water tank collapseCause no 5Base Construction was not strong enough to bear load of

2000 liter tank plus fabricated iron stand and plates

ConsequencesThe load increased beyond tolerance and the cement

base cracked thus resulting in collapsed structure

Causes of water tank collapseFollowing image describes about cause no 5 in details

Please have a look at the fabricated stand and the bottom cement base

Images of water tank collapse Please have a look at severity of damage occoured

Precautions to be taken in future The iron stand should have larger size plates

Advantages:- Load bearing capacity will increase Use of adequate amount of cement

Advantages: - Constructed structure will be firm Too much capacity tank installing should be avoided

unless and until the base is not firm Special precaution necesscary for constructing such

type of structures