RULES DET NORSKE VERITAS (DNV) = STRUCTURES = - Boat Design Net

Rules for High Speed, Light Craft and Naval Surface Craft, January 2011 Amended July 2011, see page 3Pt.3 Ch.3 Contents – Page 6B 500 Girder tripping brackets ...................................................................................................................................... 33B 600 Girder web stiffeners........................................................................................................................................... 34Sec. 7 Pillars and Pillar Bulkheads............................................................................................................ 35A. General......................................................................................................................................................................... 35A 100 Introduction......................................................................................................................................................... 35A 200 Definitions .......................................................................................................................................................... 35B. Pillars............................................................................................................................................................................ 35B 100 Arrangement of pillars ........................................................................................................................................ 35B 200 Cross-section particulars..................................................................................................................................... 35B 300 Pillar scantlings................................................................................................................................................... 35B 400 Pillars in tanks..................................................................................................................................................... 36C. Supporting Bulkheads ................................................................................................................................................ 37C 100 General................................................................................................................................................................ 37Sec. 8 Weld Connections............................................................................................................................. 38A. General......................................................................................................................................................................... 38A 100 Introduction......................................................................................................................................................... 38A 200 Welding particulars............................................................................................................................................. 38B. Types of Welded Joints............................................................................................................................................... 38B 100 Butt joints............................................................................................................................................................ 38B 200 Tee or cross joints ............................................................................................................................................... 38C. Size of Connections ..................................................................................................................................................... 39C 100 Fillet welds, general............................................................................................................................................ 39C 200 Fillet welds and penetration welds subject to high tensile stresses .................................................................... 39C 300 End connections of girders, pillars and cross ties............................................................................................... 40C 400 End connections of stiffeners.............................................................................................................................. 40Sec. 9 Direct Strength Calculations ........................................................................................................... 43A. General......................................................................................................................................................................... 43A 100 Introduction......................................................................................................................................................... 43A 200 Application.......................................................................................................................................................... 43B. Plating .......................................................................................................................................................................... 43B 100 General................................................................................................................................................................ 43B 200 Calculation procedure ......................................................................................................................................... 43B 300 Allowable stresses............................................................................................................................................... 43C. Stiffeners ...................................................................................................................................................................... 43C 100 General................................................................................................................................................................ 43C 200 Calculation procedure ......................................................................................................................................... 44C 300 Loads................................................................................................................................................................... 44C 400 Allowable stresses............................................................................................................................................... 44D. Girders ......................................................................................................................................................................... 44D 100 General................................................................................................................................................................ 44D 200 Calculation methods ........................................................................................................................................... 44D 300 Design load conditions........................................................................................................................................ 44D 400 Allowable stresses............................................................................................................................................... 45Sec. 10 Buckling Control .............................................................................................................................. 46A. General......................................................................................................................................................................... 46A 100 Definitions .......................................................................................................................................................... 46B. Longitudinal Buckling Load ...................................................................................................................................... 47B 100 Longitudinal stresses........................................................................................................................................... 47C. Transverse Buckling Load ......................................................................................................................................... 47C 100 Transverse stresses.............................................................................................................................................. 47D. Plating .......................................................................................................................................................................... 47D 100 Plate panel in uni-axial compression .................................................................................................................. 47D 200 Plate panel in shear ............................................................................................................................................. 49D 300 Plate panel in bi-axial compression and shear .................................................................................................... 49E. Stiffeners in Direction of Compression ..................................................................................................................... 50E 100 Lateral buckling mode ........................................................................................................................................ 50E 200 Torsional buckling mode .................................................................................................................................... 51DET NORSKE VERITAS AS