Notes on cylinder bridge piers and the well system of foundations, especially written to assist those engaged in the construction of bridges, quays, docks, riverwalls, weirs, etc

John Newman

Description

CYLINDER DGE PIERS JOHN NEWMAN PIERSON CYLINDER BRIDGENOTES AND THE FOUNDATIONS.WELL SYSTEM OF DEFT. ARCHITECTURAL Science.PracticalSchool of Ont.Toronto, TE BRIDGE PIERSNOTES ON CYLINDER AND THE WELL SYSTEM OF FOUNDATIONS. written to assist those in theEspecially engaged construction of etc.TOvet> Melts,3Brf&0es, ~=Then H . w EXAMPLE Let s =5 tons foot.per square = =D 12 feet A>. 113'10 feet.square =d 8 feet. =W 80 tons. the value of it would not be or in accord-Eespecting 10, economical, withance the of correct for the to be of theprinciples design, cylinder same diameter on rock when thethroughout, excepting foundations, 14 CYLINDER BRIDGE PIERS. the willsafe load on the base that which safelyapproaches hearting rule to the exact of thebear. It is to asimpossible give any position in foundations and conditions*but the case ofreducing ring ; ordinary that the of the sunk into the isgroundby assuming portion cylinder =one-third of the total of the and that D T5 inheight column, d, w, 8 intliis will 4 in. in of a 12 ft. in.+example, equal height cylinder, =of an 8 ft. w .'. 5'15 the Port-height cylinder ; tons, hearting being land cement concrete. X .(5 113-10)-80 =H = 94 27 ft 5'15 If the diameter had been taken as the same throughout, X .113-10)-80(5= =H 60 70 ft 8 A the two will at once show theofcomparison limiting heights great and a reduction of the diameter of theofadvantage economy cylinder above the ground-line.

Sujets

• Bridges
• Foundations

Informations

• Publié par: les_archives_du_savoir
• Nombre de lectures: 10
• Langue: English
• Poids de l'ouvrage: 10 Mo

Extrait

CYLINDER
DGE PIERS
JOHN NEWMANPIERSON CYLINDER BRIDGENOTES
AND THE
FOUNDATIONS.WELL SYSTEM OF
DEFT.
ARCHITECTURAL
Science.PracticalSchool of
Ont.Toronto,TE
BRIDGE PIERSNOTES ON CYLINDER
AND THE
WELL SYSTEM OF FOUNDATIONS.
written to assist those in theEspecially engaged
construction of
etc.TOvet> Melts,3Brf&0es, <auass, Bocfes, Malls,
BY
JOHN NEWMAN,
Assoc.M.Inst.C.E., F.Impl.Inst.,
AUTHOR OF
" "
Notes on Concrete and Works in Concrete ;
"Earthwork and Subsidences Public Works"Slips upon ;
" Tricks and Odd PractisedScamping Knowledge occasionally upon
Public Works" etc.; etc., etc.,
DEPT.ARCHITECTURAL
School Practical Science,of
Ont.Toronto^
LONDON :
E. & F. N. STEAND.SPON, 125,
NEW YORK :
SPON & CORTLANDT STREET.CHAMBERLAIN, 12,
*
1893.PREFACE.
thoseTHIS book has been written to assistespecially
Piersin orengaged erecting Cylinder Bridgedesigning
orand and Wells,Brick, MasonryAbutments, Concrete,
etc.as to and River-Walls,Quay-, Dock-,applied Bridges,
have as serialof theMany chapters recently appeared
articles in THE ENGINEERING REVIEW.
It will be reference to the Table of Contentsseen, by
that most of the chiefand the requiringIndex, points
ofattention in the or erectiondesign, sinking, Cylinder
orPiers or either air, dredging, open-Wells, by compressed
toair from the first sketch and calculationexcavation,
of the are examined. The strainsthe work,completion
on or the lateralcaused by wind-pressure bridge piers,
of earth on abutments and arethrust walls, only very
excellent treatisesreferred as there arecursorily to, many
and on those whereas information on thesubjects,papers
matters herein mentioned is to beonly fragmentarily
and after considerable research in the variousobtained,
and of this and otherengineering journals, books, reports
and in thecountries, especially engineering press.
In 1873 a Miller was awarded to the author byprize
of the of for athe Council Institution Civil Engineers,VI PREFACE.
short the calculations inpaper upon necessary designing
Iron it afterwardsCylinder Bridge Piers, being published
The beenby permission. pamphlet having many years
out of and several andprint, engineers bridge-builders,
here and to theirtestifiedabroad, having unsolicitedly
received "much from the wholehaving help" it, subject
has been considered de novo and this is no; although by
means an exhaustive' it kind ofa miniaturetreatise, being
on Piers and the Wellcyclopaedia "Cylinder Bridge
of and theas ofSystem Foundations," application
and well foundations has since been muchcylinder
theextended, is cherished that the book behope may
useful to theequally Engineer, Bridge-Builder, Contractor,
and Student.
J. N.
1893.LONDON,