Infrastructure Engg. & Const. Tech. 4.8 (Ventilation in Tunnels)

[@raiannurislam]

very informative video sir

[@bijayanandpatnaik6494]

Very nice and interesting.

[@ramesh05dasari]

Well explained.
Can you also provide construction/installation productivity for tunnel in railway/metro?

[@afnaspk5380]

Dear sir can you please give calculation for tunnel ventilation