## Sanitary, Heating and Ventilation Engineering: A General Reference Work, Volume 4American technical society, 1918 - Heating |

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Sanitary, Heating and Ventilation Engineering: A General Reference ..., Volume 3 American Technical Society No preview available - 2016 |

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Page 270 - A sphere is a solid bounded by a curved surface, every point of which is equally distant from a point within called the center.

Page 273 - Cycloid. The cycloid is a curve generated by a point on the circumference of a circle which rolls on a straight line tangent to the circle.

Page 1 - ... editors have freely consulted the standard technical literature of America and Europe in the preparation of these volumes. They desire to express their indebtedness particularly to the following eminent authorities whose well-known works should be in the library of everyone connected with building.

Page 213 - States harmless from and against all and every demand, or demands, of any nature or kind for, or on account of, the use of any patented invention, article, or process included in the materials hereby agreed to be furnished and work to be done under this contract.

Page 267 - Every circumference of a. circle, whether the circle be large or small, is supposed to be divided into 360 equal parts called degrees. Each degree is divided into 60 equal parts called minutes, and each minute into 60 equal parts called seconds.

Page 251 - Fig. 2 is an exercise with the line pen, T-square and triangle. First divide the lower line DC of the rectangle into divisions each \ inch long and mark the points E, F, G, H, I, J, K, etc., as in Fig. 1. Place the T-square with the head at the left-hand edge of the drawing board and the upper edge in about...

Page 282 - With O as a center and a radius equal to the distance OA, describe the circumference passing through A, B and C. Proof. The point O is equally distant from A, B and C, since it lies in the perpendiculars to the middle points of AB and A C. Hence the circumference will pass through A, B and C. PROBLEM 14. To inscribe a Circle in a given Triangle. Draw the triangle LMN of any convenient size. MN may be made 3^ inches, LM, 2| inches, and LN, 3* inches.

Page 253 - The guide lines of the date, name and address are similarly drawn in the lower margin. The date of completing the drawing should be placed under Fig. 3 and the name and address at the right under Fig. 4- The street address is unnecessary. It is a good plan to draw lines...

Page 343 - ... In Fig. 70, take especial notice of the shade lines. These are put on as if the group were made in one piece ; and the shadows cast by the blocks on one another are disregarded. All upper horizontal faces are light, all left-hand (front and back) faces light, and the rest dark. OBLIQUE PROJECTIONS. In oblique projection, as in isometric, the end sought for is the same — a more or less complete representation, in one view, of any object.

Page 330 - ... element is taken from the elevation A, of either contour element. All of the elements of the cone are of the same length, so when the cone is rolled each point of the base as it touches the plane will be at the same distance from the vertex. From this it follows that the development of the base will be the arc of a circle of radius equal to the length of an element. To find the length of this arc which is equal to the distance around the base, divide the plan of the circumference of the base...