A Manual of Carpentry and Joinery |
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Popularne fragmenty
Strona 309 - If three forces acting at a point are in equilibrium, they can be represented in magnitude and direction by the three sides of a triangle taken in order.
Strona 306 - ... forces will be represented in magnitude and direction by that diagonal of the parallelogram which passes through this point.
Strona 156 - ... 2. To place each abutting surface in a joint as nearly as possible perpendicular to the pressure which it has to transmit. 3. To proportion the area of each surface to the pressure which it has to bear, so that the timber may be safe against injury under the heaviest load which occurs in practice, and to form and fit every pair of such surfaces accurately, in order to distribute the stress uniformly.
Strona 94 - Prove that parallelograms on the same base and between the same parallels are equal in area.
Strona 86 - In a right-angled triangle the square on the side subtending the right angle is equal to the sum of the squares on the sides containing the right angle.
Strona 24 - A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference.
Strona 24 - A circle is a plane figure bounded by a line, every point of which is equally distant from a point within, called the center.
Strona 343 - A man sitting upon a board suspended from a single moveable pulley pulls downwards at one end of a rope which passes under the moveable pulley and over a pulley fixed to a beam overhead, the other end of the rope being fixed to the same beam. What is the smallest proportion of his whole weight with which the man must pull in order to raise himself?
Strona 33 - Other polygons include the quadrilateral (4 sides), pentagon (5 sides ) , hexagon ( 6 sides ) , heptagon ( 7 sides ) , octagon ( 8 sides ) , nonagon ( 9 sides ) , decagon ( 10 sides ), and dodecagon ( 12 sides).
Strona 335 - ... and yellow pine, 3. Another important consideration is the ratio which the breaking load of a beam bears to the " safe " load. This ratio is called the factor of safety, and its value depends upon whether the load is a live — a constantly moving — load, or a dead (ie, a stationary) load. The factor of safety for a dead load is usually taken at 5, which means that the safe load upon a beam must not exceed one-fifth of the breaking load ; the factor of safety for a live load is often taken...
Informacje bibliograficzne
| Tytuł | A Manual of Carpentry and Joinery |
| Autor | J. W. Riley |
| Wydawca | Macmillan and Company, limited, 1905 |
| W formie oryginalnej | Uniwersytet Michigan |
| W formie cyfrowej | 19 Cze 2007 |
| Liczba stron | 500 |
| Eksportuj cytowanie | BiBTeX EndNote RefMan |