847 chapter 7 construction 1 activity is an integral part of a country s infrastructure and industrial deve lopment it includes hospitals schools townships offices houses other buildings urban infrastruc ture including water supply sewerage drainage highways roads ports railways airports power systems irrigation agriculture tele communications etc covering as does such wide spectrum becomes the basic input for socio economic development besides industry generates substantial employment provides growth impetus to sectors through backward forward linkages essential therefore that this vital nurtured healthy economy 2 with present emphasis on creating physical massive investment planned during tenth plan would play crucial role in regard has gear itself meet challenges order intended targets time current capacity domestic need considerable strengthening 3 sector major link ages building material since accounts sizeable share costs table these