Оборудование для морских перевозок SEC Bremen

Transversal stowage system in holds Ship`s Equipment Centre Bremen GmbH May 2011 © Technical alterations reserved 2.4 Pressure system This conventional securing system in the past presented the largest group of securing systems in hold and is splitted again in two subdivisions: Pressure System Only pressure forces will be transmitted from the container block to the supporting points at the longitudinal bulkhead. Tension/Compression System The container block is splitted in two or three separate blocks and both, tension and compression forces will be transmitted into the side structure by use of T/P-Elements. For the transversal securing system all containers have to be connected by use of double stacking cones in transversal direction. The horizontal forces from the containers which occur in rolling condition will be transmitted from one stack into the next one and at the same time adding up. The resulting force at the outermost stack has to be absorbed at the longitudinal bulkheads. The maximum horizontal force which may be transmitted by the container corner castings is specified in the individual rules of the classification societies (please compare to chapter 1.11). The required number of supporting points is depending on the acting forces in the container block and the allowable support force specified by class. For this reason it can be necessary in some cases not just to use pressure elements between all tiers but also on top by using bridge fittings and especially designed pressure elements. Very often the transversal securing system is used for securing of 20’ containers which are stowed in 40’ cellguides at 76 mm ISO gap position but also the transversal securing system is the one and only adequate securing solution for multi purpose container vessels without cellguides in holds. As an option the pressure elements may be replaced by fixed installed pressure rails which are at the same time protecting the longitudinal bulkhead from damage when loading containers. Description