If material is light in weight but occupying larger space due to dimension; it needs to be charged as per volumetric weight calculations shown below:

SURFACE MODE DOMESTIC
1 Cubic Feet (CFT) = 10 Kg 
 
Vol. Wt. : LxBxH in cms
                 4000

AIR MODE DOMESIC
LxBxH (in cms) 
 5000                          

INTERNATIONAL SHIPMENTS
LxBxH (in cms) 
 5000                          

Parcels having length more than 100 cm from any side should not be booked on Rail mode or Air mode. SIMILARLY single pc of more than 80 kg can not be booked without prior approval from operations and at extra cost.