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LONGMAN, REES, ORME, BROWN, GREEN & LONGMAN,
PATERNOSTER-ROW.
145 •C75
LONDON: Printed by A. SPOTTISWOODE, New-Street-Square.
TABLE OF CONTENTS.
INTRODUCTION
Page
1
CHAPTER I.
RULES FOR TRACING THE LINE OF A NEW ROAD, P. 39.
Tracing the Line of a new Road-Surveys
Mountains, Hills, and Valleys
Rivers
Bogs and Marsh Ground
Materials - Exposure-Evaporation
CHAP. II.
INVESTIGATION OF THE PRINCIPLES OF ROAD-MAKING,
Strength of Roads
P. 61.
Application of the Principles of Moving Bodies
Collision-Friction
Hardness
Elasticity
Machine for Measuring the Power of Traction
Traction on different Kinds of Roads
Erroneous Rules
62
6.3
64
66
68
72
Slopes
80
Wet Land
Retaining Walls
81
Precipices
Bed of a Road
82
Embankments
83
Slopes at which different Strata will stand
85
London Clay
Sandstone
Clay and Marl
86
Limestone Strata
87
Footpaths
Specification for forming a Road over a Peat
Bog
91
CHAP. IV.
DRAINAGE, P. 93.
Road partly paved and partly made with bro-
ken Stone
144
Surface of broken Stones
Road with a Foundation of Pavement, and a
Road made with a Foundation of Roman Ce-
ment and Gravel, and a Surface of broken
Stones
Road with a Foundation of rubble Stone, and
a Surface of broken Stones
Road made of broken Stones
Road made with Gravel
165