Plate Girder Construction | by Isami Hiroi, C.E.
The abundance of plate-girder drawings in almost every engineering office, no matter whether their designs are correct or not, has usually been the source from which many draughtsmen "design" a new girder. Indeed even in regular bridge works with the rush of work, usual in these places, there is hardly an opportunity for the draughtsmen to examine...
| Title | Plate Girder Construction |
| Author | Isami Hiroi, C.E. |
| Publisher | D. Van Nostrand Co. |
| Year | 1893 |
| Copyright | 1893, D. Van Nostrand Co. |
| Amazon | Plate Girder Construction |
By Isami Hiroi, C.E.
Professor of Civil Engineering in Sapporo College.
Revised Edition.
Preface- Preface To The Second Edition In the present edition several corrections and many important changes and additions have been made, and some parts have been almost entirely re-written. The formulas and...
- Web Stress
- While in trusses without superfluous members, or those supposed to be so, it is quite a simple matter to determine the stresses acting in their members, we are in much ignorance as to the nature and a...
- Web Stress. Part 2
- Now the bending moment M increases from the end toward the middle of the beam, and with it evidently the intensity f of the horizontal stress also; so that f varies not only in vertical direction on b...
- Web Stress. Part 3
- Now comes in the question how the web should be proportioned to resist such stresses. There are almost as many methods advanced as there have been authorities on the subject. Perhaps the rational, and...
- Web Stress. Part 4
- The spacing of stiffeners is more a matter of experimental determination and judgment than of mere calculation - the fact which our foregoing discussion of the web stresses might suggest to any one. M...
- Web Stress. Part 5
- The following points will suggest what position and what part of the load system are to be looked for to find the maximum moments. 1. For uniformly distributed load over the entire span, the maximum ...
- Web Stress. Part 6
- According to what has already been said, the absolute maximum moment occurs when the center e of the girder lies midway between the perpendiculars through Y, and the load nearest to it, and is found u...
- Allowable Stress
- There is a diversity of opinions as to the amount of allowable stress in a plate-girder, but all agree in this, that, on account of the great difference between the dead and live load, or more properl...
- Web
- The equation of vertical shearing force has already been given by eq. (3) viz.: x. Sx =R-w o. For a given position of load, and hence for a given value of R, therefore, Sx will be maximum whe...
- Lateral Forces
- In case the track on the girder is curved, the centrifugal force of locomotive must be taken into consideration. If A and B represent two flanges of the girder (in case of deck girder, top flanges, an...
- Rivets And Rivet Spacing
- As already said, the shearing strength of iron is equal to about 4/5 of its tensile strength. In order to cover all the changing values of unit-stress, and thus to avoid tedious work of calculation, w...
- Rivets Connecting Web And Flanges
- The stress which the rivets connecting the web and flanges sustain is evidently due to the stress which is transmitted from one to the other. We have here two stresses to consider, and for whose resul...
- Rivets In Flanges
- Having determined the spacing of rivets connecting the web with flanges, it remains for the rivets in the latter alone merely to be so spaced as to stagger with them. The distance between the rows of ...
- Through Girders
- Nearly all that has been said thus far about the deck girders applies equally well to through girders. Since it is not possible in a through girder to have top lateral bracing, particular attention sh...
- Other Forces Than Those Already Considered
- In the chapter on Flange Stress we mentioned the fact of the existence of of certain forces causing stresses which we have no exact way of determining. To these may be added those due to the changes o...
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