## Principles of mechanics, and their application to prime movers, naval architecture, iron bridges, water supply, etc. Thermodynamics, with special reference to the steam engine

### William J. Millar

View all copies of this ISBN edition:

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1874 Excerpt: ...ton at 2, and a load of 1 ton at 3. Let Ft be the supporting force, equal and opposite to the downward force at point of support; St = stress on the bar 1, 2, or 3, 4; H, = horizontal thrust upon the bar 1, 4. Since the angle Fig. 27. We have now to calculate the stresses on the bars of the second frame 5, 2, 3, 6 (Fig. 26); and since we have And by multiplying these values by the same ratios as in case 1, p. 63, we have for the inclined stresses, 2-90 tons = stress along 1, 2, or 3, 4. 1-74 ton = „ 2,5, or 3, 6. 0-58 ton = „ 7,5, or 7,6. The horizontal stresses are found by finding the bending moments at the points 2, 5, 7, 6, and 3 (as explained at p. 54), and dividing the moments so found by the depth of the girder, thus:--Tons. Supporting force at 1 = 2-5 2 = 1-5 5 = 0-5 7 = 0-0 Bending Moments. Round 2 = 2-5 x-5 =1-25 „ 5 = (1-25 + 1-5 x-5).. =2-00 „ 7 = (1-25+-75+-5 x-5) =2-25 And the horizontal stresses are, 1-25 At 2 or 3, or their opposites =---= 1 45. ob At 5 or 6, or their opposites =---= 2 32. oO 2-25 At 7, or its opposite =--5-= 2-61.-ob On comparison of the two methods it will be seen that the results are similar. FORMS OF GIRDERS. Plate Girders. Fig. 28 shows in section a wrought-iron plate girder; Fig. 29 shows part of same girder in elevation. A and B are the flanges of wrought-iron plates, suitably joined at their extremities by covering plates; C is the web, generally of thin plate. Angle-irons D are riveted to the web, the flanges being also riveted to the angle-irons. Stiffen ing pieces of tee-iron E are riveted to the web and flanges to give additional stiffness to the structure. The pitch, or distance between the centres of the rivetholes, is from 3 inches to 4 inches. When the span is considerable, it is more ...

"synopsis" may belong to another edition of this title.

(No Available Copies)

Search Books:

Create a Want

If you know the book but cannot find it on AbeBooks, we can automatically search for it on your behalf as new inventory is added. If it is added to AbeBooks by one of our member booksellers, we will notify you!

Create a Want

### Other Popular Editions of the Same Title

#### Featured Edition

ISBN 10:  1145937543 ISBN 13:  9781145937543
Publisher: Nabu Press, 2010
Softcover

Forgot..., 2017
Softcover

Sagwan..., 2015
Hardcover

Nabu P..., 2013
Softcover