Coal Miners' Pocketbook: Formerly The Coal and Metal Miners' Pocketbook; Principles, Rules, Formulas and TablesMcGraw-Hill Book Company, Incorporated, 1916 - 1172 páginas |
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Resultados 1-5 de 100
Página 44
... shown here . B Square . - Four Rectangle . - Four equal sides right angles and four right and opposite sides equal ... shown in the accompanying figure . Angles . - The sum of the interior angles the sum of the exterior angles 360 ° , or ...
... shown here . B Square . - Four Rectangle . - Four equal sides right angles and four right and opposite sides equal ... shown in the accompanying figure . Angles . - The sum of the interior angles the sum of the exterior angles 360 ° , or ...
Página 45
... shown in Fig . 1 , A = } [ b ( h + h ' ) + ah + ch ' ] . d In the trapezium shown in Fig . 2 , A = 1⁄2 ( Þ + p ' ) . POLYGONS A polygon is a plane figure bounded by three or more straight lines . Some of the more common forms are shown ...
... shown in Fig . 1 , A = } [ b ( h + h ' ) + ah + ch ' ] . d In the trapezium shown in Fig . 2 , A = 1⁄2 ( Þ + p ' ) . POLYGONS A polygon is a plane figure bounded by three or more straight lines . Some of the more common forms are shown ...
Página 47
... shown and the sum of their areas taken as that of the property . FIG . 3 E Second Method : By Selected Ordinates . - Draw perpendiculars on AB , Fig . 4 , from the points of the curve at which its direction changes appreciably , and ...
... shown and the sum of their areas taken as that of the property . FIG . 3 E Second Method : By Selected Ordinates . - Draw perpendiculars on AB , Fig . 4 , from the points of the curve at which its direction changes appreciably , and ...
Página 63
... shown , so as to make as little friction as possible where such parts are be- ing turned as a whole . A small ... shown in part in Fig . 2. The style of marking these gradua- tions may be varied to suit the ideas of the surveyor , but ...
... shown , so as to make as little friction as possible where such parts are be- ing turned as a whole . A small ... shown in part in Fig . 2. The style of marking these gradua- tions may be varied to suit the ideas of the surveyor , but ...
Página 78
... shown against the white background in strong relief . After the transit head is shifted so that the line of sight coincides approximately with both , they should be focused upon alternately so as to see if the line bisects the swing of ...
... shown against the white background in strong relief . After the transit head is shifted so that the line of sight coincides approximately with both , they should be focused upon alternately so as to see if the line bisects the swing of ...
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Otras ediciones - Ver todas
Coal Miners' Pocketbook, Formerly the Coal and Metal Miners' Pocketbook ... Thomas J. Foster Sin vista previa disponible - 2012 |
Términos y frases comunes
amount angle anthracite armature average beam bending bituminous coal boiler bottom British thermal units carbon cars cement center of gravity circuit coal coke column combustion compression concrete cubic curve cylinder diameter distance drill driven electromotive force elevation engine entry equal factor of safety feet formula friction frog fuel gauge given grade haulage head heat hoisting rope holes horizontal horsepower Inches iron length lime load lubrication mantissa material mean effective pressure measured method mines mixture moment of inertia mortar motor obtained pillars pipe piston placed plumb-bob Portland cement Pounds pressure pulley pump radius rail resistance sand seam shaft shear sheaves shown in Fig side slope specific gravity square station steam steel strands strength stress surface switch tangent temperature tests thickness timber track usually valve vertical weight wire
Pasajes populares
Página 3 - SQUARE MEASURE 144 square inches (sq. in.) = 1 square foot (sq. ft.) 9 square feet — 1 square yard (sq.
Página 456 - Z is the space between the piston and the cylinder head (when the piston is at the end of the stroke), toi,-i 8 gether with the volume of the steam ports.
Página 412 - Pi = pressure of steam at discharge, in pounds per square inch; L = length of pipe, in feet; d = diameter of pipe, in inches. In...
Página 204 - This term is applied to the finely pulverized product resulting from the calcination to incipient fusion of an intimate mixture of properly proportioned argillaceous and calcareous materials, and to which no addition greater than 3 per cent has been made subsequent to calcination.
Página 6 - Cubic Measure 1728 cubic inches (cu. in.) =1 cubic foot (cu. ft.) 27 cubic feet = 1 cubic yard (cu. yd.) 128 cubic feet = 1 cord (cd...
Página 34 - Rule. — Divide the logarithm of the number by the index of the root; the result will be the logarithm of the root.
Página 36 - If two triangles have two sides, and the included angle of the one equal to two sides and the included angle of the other, each to each, the two triangles are equal in all respects.
Página 149 - The power multiplied by the distance through which it moves is equal to the weight multiplied by the distance through which it moves. Thus, 20 Ib.
Página 37 - The sum of the interior angles of a polygon is equal to twice as many right angles as the polygon has sides, less four right angles.
Página 303 - The pressure of a liquid on any surface immersed in it is equal to the weight of a column of the liquid whose base is the surface pressed, and whose height is the perpendicular depth of the center of gravity of the surface below the surface of the liquid.