Size of Container Yard



It will depend upon the optimum number of containers to be store at any given time which is a function of the dwell time (DT) of containers which are separate for imports, exports and empty containers. Normally seven days for import, three days for export and 15 days for empties is considered pragmetic.

Imports = 6400 TEUs/annum or 18 per day.
At 7 days DT for each, the average inventory will be :
   18*7=126 TEUs
exports = 1600 TEU/annum or 5 TUs/day
at 3 days DT for each, average inventory will be
   5*3=15 TEUs
empties = 4800 TEUs/annum or 14 TEUs/day
at 15 days DT, average inventory will be :
   14*15 or 210 TEUs
Daily total average inventory = 126+15+210=351

The total storage capacity of CY should in the case be 351 of which the ground slot will be a fraction of the stake height. While equipment available may be capable to stake five high, full capacity can not be used for operating consideration as containers have to be shuffled for access and if the stake is full, shuffling and access become very difficult. Average staking height should therefore, be taken at 2.5. At this, the reqirement of ground slot will be
    351/2.5=140 .



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