Calculation for Hull Strength Construction in Offshore Structures (A Case Study of 5000t Work Barge)

Abstract

Ship classification societies such as Det Norske Veritas, American Bureau of Shipping, and Lloyd's Register have established standard calculation forms for hull loads, strength requirements, thickness of hull plating, reinforcing stiffeners, girders, and other structures. This paper therefore used the
relevant International Standards to compute, determine scantlings to obtain a good structural rigidity and the estimation of the weight of all components. With the help of the Classification of Ships’ Rule and Regulation Part 2 and 3, No 3 of Lloyd’s Register, various formulae were used to obtain various thickness of plates (side, bulk, deck etc) and frames. Results show that the maximum stress on the 5000 tonnes work barge should be 83.33MN / m2 while Maximum stress on deck and base were 548.54MN / m2 and 304.1MN / m2 respectively.

Keywords: Lloyd’s Register, Hull strength, Maximum stress, Bulkhead, Double bottom