Open question

Been a long time since someone posted on this site, so let me break this hiatus with an interesting question. Actually our senior Tejas pol asked me this one.

For a construction of a building of about 3,00,000 sft, what will be the approximate water and electricity requirement for the construction, concrete, curing, boarding, running and cleaning of machinery other usages of labour.

Make any assumptions that might be necessary and state them.