Boilers, Their Construction and Strength a Handbook of Rules, Formulae, Tables |
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28 tons 32 tons Area Area Area B=Working pressure box in inches Butt Joints cent centres of girders column refers combustion box Contraction of area Cubic D=Diameter of boiler D₁ depth of girder Diam diameter in inches distinguishing letter double riveted DXBXF elongation F F F factor of safety Fahrenheit flanges found immediately found opposite furnace in inches girder is odd Girders in inches given pressure given thickness greater number heat or flame holes impact of heat Iron Plate inch lap joints Longitudinal seams N=Numeral nominal factor number of bolts number of supporting opposite the given Pitch Surface lbs Pitch Surface Pitch pitches and surfaces Plate inch thick Pressure per sq pressure per square safety valves single riveted spring square inch steam Steel Plate inch supporting bolts Surface Pitch Surface Surface Surface Surface surfaces are applicable Table tensile strength tested thickness of plate tons per square VULGAR FRACTIONS welded
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Page i - BY THE SAME AUTHOR. KITCHEN BOILER EXPLOSIONS: Why they Occur, and How to Prevent their Occurrence. A Practical Handbook based on Actual Experiment. With Diagram and Coloured Plate.
Page 49 - T , pressure. \V = width of combustion box in inches. P = pitch of supporting bolts in inches. D = distance between the girders from centre to centre in inches. L = length of girder in feet. d = depth of girder in inches. T = thickness of girder in inches.
Page 41 - ... should be heated to a cherry red, then plunged into water of about 80° and kept there until of the same temperature as the water, and then bent. The bending...
Page 30 - C = 60 when the plates are exposed to the impact of heat or flame and" steam in contact with the plates, and the stays fitted with nuts and washers, the latter being at least three times the diameter of the stay, and two-thirds the thickness of the plate they cover.
Page 33 - The areas of diagonal stays are found in the following way: Find the area of a direct stay needed to support the surface, multiply this area by the length of the diagonal stay, and divide the product by the length of a line drawn at right angles to the surface supported to the end of the diagonal stay; the quotient will be the area of the diagonal stay required.
Page 36 - ... ordinary heat of steam, and in the case of combustion chambers that the ends are fitted to the edges of the tube plate, and the back plate of the combustion box : — Cxr/2xT ( W W = width of combustion box in inches.
Page 30 - C = 80 when the plates are exposed to the impact of heat or flame, with water in contact with the plates, and the stays screwed into the plate and fitted with nuts.
Page 20 - To be added when the boiler is of such a length as to fire from both ends, or is of unusual length, such as flue boilers ; and the circumferential seams are fitted as described opposite P, R...
Page 383 - Measure 1 pint = 4 gills 1 quart = 2 pints 1 gallon = 4 quarts 1...
Page 29 - C = 100 when the plates are not exposed to the impact of heat or flame, and the stays are fitted with nuts and washers, the latter being at least three times the diameter of the stay and twothirds the thickness of the plates they cover.* C = 90 when the plates are not exposed to the impact of heat or flame.