E. S. BELLASIS, M.Inst.C.E.

RECENTLY SUPERINTENDING ENGINEER IN THE IRRIGATION BRANCH OF THE PUBLIC WORKS DEPARTMENT OF INDIA

37 Illustrations

London
E. & F. N. SPON, Ltd., 57 HAYMARKET, S.W.
New York
SPON & CHAMBERLAIN, 123 LIBERTY STREET
1913

CONTENTS

PAGE
Preface[vii]
CHAPTER I
INTRODUCTION
ARTICLE
1.Preliminary Remarks[1]
2.General Principles of Canal Design[2]
3.Information concerning Canals[11]
4.Losses of Water[16]
5.Duty of Water[21]
6.Sketch of a Project[26]
CHAPTER II
THE DESIGNING OF A CANAL
1.Headworks[30]
2.The Contour Map[36]
3.Alignments and Discharges[37]
4.Remarks on Distributaries[45]
5.Design of Canal and Branches[47]
6.Banks and Roads[53]
7.Trial Lines[58]
8.Final Line and Estimate[59]
9.Design of a Distributary[60]
10.Best System of Distributaries[71]
11.Outlets[76]
12.Masonry Works[80]
13.Pitching[90]
14.Miscellaneous Items[93]
CHAPTER III
THEWORKING OF A CANAL
1.Preliminary Remarks[96]
2.Gauges and Regulators[103]
3.Gauge Readings and Discharges[106]
4.Registers of Irrigation and Outlets[113]
5.Distribution of Supply[118]
6.Extensions and Remodellings[127]
7.Remodelling of Outlets[131]
8.Miscellaneous Items[137]
CHAPTER IV
THE PUNJAB TRIPLE CANAL PROJECT
1.General Description[144]
2.Areas and Discharges[147]
3.Remarks[156]
CHAPTER V
PROPOSED IMPROVEMENTS IN IRRIGATION CANALS
1.Preliminary Remarks[158]
2.Reduction of Losses in the Channels[159]
3.Modules[162]
APPENDICES
A.Divide Wall on Lower Chenab Canal[169]
B.Specification for Maintenance of Channels[171]
C.Specification for Maintenance of Masonry Works[174]
D.Watching and Protecting Banks and Embankments[175]
E.Specification for Bushing[178]
F.Escapes[180]
G.Gauges[183]
H.Gibb’s Module[186]
K.Kennedy’s Gauge Outlet[193]
Index[196]

PREFACE