Please see the Transcriber’s Notes at the end of this text.


cover

THE
ANATOMY OF BRIDGEWORK


THE
ANATOMY OF BRIDGEWORK

BY

WILLIAM HENRY THORPE
ASSOC. M. INST. C. E.

WITH 103 ILLUSTRATIONS

logo

London
E. & F. N. SPON, Limited, 57 HAYMARKET
New York
SPON & CHAMBERLAIN, 123 LIBERTY STREET
1906


PREFACE

In offering this little book to the reader interested inBridgework, the author desires to express his acknowledgmentsto the proprietors of “Engineering,” in which journalthe papers first appeared, for their courtesy in facilitatingthe production in book form.

It may possibly happen that the scanning of these pageswill induce others to observe and collect information extendingour knowledge of this subject—information which,while familiar to maintenance engineers of experience, hasnot been so readily available as is desirable.

No theory which fails to stand the test of practicalworking can maintain its claims to regard; the study ofthe behaviour of old work has, therefore, a high educationalvalue, and tends to the occasional correction of views whichmight otherwise be complacently retained.

60 Winsham Street,
Clapham Common, London, S.W.
October, 1906.



[vii]

CONTENTS

CHAPTER I.
INTRODUCTION—GIRDER BEARINGS.
PAGE
Pressure distribution—Square and skew bearings—Fixed bearings—Knuckles—Rollers—Yield of supports1
CHAPTER II.
MAIN GIRDERS.
Plate webs: Improper loading of flanges—Twisting of girders—Remedial measures—Cracks in webs—Stiffening of webs—T stiffeners9
Open webs: Common faults—Top booms—Buckling of bottom booms—Counterbracing—Flat members17
CHAPTER III.
BRIDGE FLOORS.
Liability to defects—Impact—Ends of cross and longitudinal girders—Awkward riveting—Fixed ends to cross girders—Plated floor—Liberal depths desirable—Type connections—Effect of “skew” on floor—Water-tightness—Drainage—Timber floors—J
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