4.4 Learning & Recommendations
As mentioned above, the approximate consumption of the reinforcement in
overlapping is approximately 10-15% of the total requirement. Welding of bars
under strict supervision provide the following advantage compared to
overlapping of bars.
- Consumption of material is less, therefore saving in material cost by 10-15%
(Direct impact, ref. Table-3) - Reduction in cost of material handling (i.e. transportation cost, manpower
requirement etc.) is additional benefit. - Saving in execution time.
Current Scenario in Indian Construction Industry:
The technique although is being extensively used in some foreign countries like
Japan, China etc. It is relatively new for Indian construction practices, and yet
to be explored and used commercially. Also, strict quality control in execution,
skilled manpower for precise welding procedure along with the mandatory safety
requirements as per relevant IS standards are the key areas to be considered.
4.5 Recommendations:
- An in-house research program shall be carried out in consultation with the
established Indian institutions to promote the innovation and implementation
of the technique all over the country. - For recent upcoming projects, gas based fusion butt welding procedure shall
be carried out for selected plant buildings and sample specimen shall be
tested from the authorized laboratory for assessment of the quality of imple
mentation of the technique based on available workmanship.
4.6 Conclusion:
Use of reinforcement welding provide considerable impact on cost effectiveness
and shall be explored as a part of innovation and implementation of new technology
to optimize material requirement as a step towards sustainability as well as an
improvement in construction techniques.