Is cenvat credit available on shed construction??

May be hope or maybe not. Such condition depends on uses of material as input or Capital Input. Mostly case does not allowed the Input as Iron steel for their capitalization only for making the Shad or premises of factory which constructed.

No. The present Cenvat Credit Rules do not allow inputs used in construction as credit. The duty on capital goods used could be available: hoists , crane, panel board, lift .... used in factory. It maybe ideal that these capital goods are separately procured by the cusomter rather than the contractor.