A Treatise On The Principles And Practice Of Dock Engineering

CONTENTS. Iron and Steel—Monter and Hennebique Systems—Typical Examples at Aberdeen, Zeebrugge, Havre, Kingstown, Algiers, Hook of Holland, Blyth, Liverpool, Newcastle, Soukhoum, Touapsé, Belfast, Dundee, Dunkirk, Tilbury, Madras, Sunderland, Greenock, and Hull, . . ... CHAPTER VIII. —Dock Gates and Caissons. Definition and Relative Advantages of Gates and Caissons—Metal versus Wooden Gates—Weight, Cost, Durability, and Stbength—Single-leaf AND DoUBLE-LEAF GaTES—Horizontal AND VERTICAL GiRDER TYPES— Storm Gates—Strut Gates—Stresses in Gates—Statical Forces— Methods of Finding Resultant Pressure—Zones of Equal Fressure- Bise of Gates—Analysis of Resultant—Graphic Representation- Limits of Stress—Typical Examples—Vertical Co-planar Girdebs— Stress IN Panels—Exemplification of Gate Calculations—Fittings ___ Examples of Gates at Liverpool, Birkenhead, Manchester, Hull, Buenos Ayres, Calcutta, South Shields, and Dunkirk—Table of Dock Gates—Stresses in Caissons—Classification of Caissons—Swinging, Traversing, Sliding, Rolling, Floating, and Ship Caissons—Lowering Platforms—Examples of Caissons at Malta, Bruges, Blackwall, Cardiff, Calcutta, Belfast, Liverpool, and Greenock—Table of Dock Caissons, .... CHAPTER IX. —Transit Sheds and Warehouses. Extent of Accommodation Required—Proportion of Goods to Quayage__ Statistics of Sample Cargoes—Accbssibility of Sheds _____________Proximity to Edge of Quay—Level of Floor—General Diversity of Practice________ Features of Construction— Doors and Doorways—Compartments- Lighting Materials for Floors — Fire-resisting Construction______ Monier, Hennebique, and Cottançin Systems—Pressure Sustained BY Floors—Columns and Piers—Strengtii of Columns—Roof Coverings— Weight of Shed Roofs — Examples of Sheds and Warehouses at Tilbury, Liverpool, Dundee, Greenock, Glasgow, Manchester, Antwerp, Rotterdam, Havre, Marseilles, Calais, Dunkirk, Dieppe’ Rouen, Bremen, Hamburg, Calcutta, and Buenos Ayres, CHAPTER X. —Doek Bridges. Classification—Floating Bridges—Traversing Bridges— Drawbridges— Bascules—Lifting Bridges—Swing Bridges—Single-leaf versus Double- leaf Bridges—Stresses in Movable Bridges—Case of the Double Cantilever—Case of the Cantilever and Beam—Case of the Arch— Case of the Continuous Beam—The Theorem of Three Moments- Effect of Counterpoise—Loads imposed on Movable Bridges—Weight of Structure Weights of Typical Locomotives—Equivalent Live Loads—Weight or Vehicles and Men—Practical Example of the Calculations for a Swing Bridge—Distinctive Features of Movable Bridges—The Pivot—Balanced Rollers and Whbels—The Counter- poise—Setting Apparatus—Interlocking Apparatus—Notes on Design Illustrations of Movable Bridges at Greenock, Antwerp, Rotterdam, Chicago, Marseilles, Liverpool, Leith, and Kidderpur, ix PAGE •268 301 364 405