Page 128 - Practical Ship Design
P. 128
Weight-Bused Designs 95
IIITFGRAT"
FACT-
Fig. 4.8. Integration factor and extent of parallel middle body versus block coefficient at 0.80.
The "weight per metre" can with advantage be calculated by summing steel
volumes, conveniently in the form of m2 x mms of thickness and converting to
weight only after summation. The weight per metre of transverse material such as
frames should be obtained by dividing the actual weight by the frame spacing in
metres.
It is convenient to group the weight per metre into five items comprising:
(i) bottom shell and longitudinals up to 0.lD
(ii) double bottom structure
(iii) side shell and framing between 0.1 and 0.9D, longitudinal bulkheads and
stiffening between the same limits
