الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
 |  | from | 105 |  |  |
| | | from | 105 | | |
Abstract
The main conclusions drawn up from this research work are: Fatigue stresses and material deterioration due to corrosion have no effect on inland water vessels working in the River Nile. Still water bending stress is the only stress that can be taken into consideration in the case of inland water units operating in the River Nile. Secondary stresses doesn’t exist in the case of inland water units operating in the River Nile because most of these units have only two cargo holds. The operation of these units either fully loaded or partially loaded using the two holds. The variation in still water bending moments at various loading conditions is limited due to the limitation in draft and breadth in the River Nile. The still water bending moment calculated by rules is greater by 50% than the actual still water moment. The classification society rules depend on empirical formula on calculating still water bending moments. The empirical formula used by classification society is based on a high value of the factor of safety and ignored totally the effect of weight and buoyancy distribution. The existing inland water units designed according to classification society rules are overdesigned. Applying the developed rational structural design procedure will lead to saving in steel weight of ship hull girder without violating structural safety of the unit. Using ANSYS software has confirmed that the structure is totally safe after modification. It also validates the various stresses we get by using basic design method.