Chapter II: Preface: v

CHAPTER I

_SCAFFOLDING_

Scaffolding—Definition of—Northern system—Derrick
stagings—Working platforms—South country system—Gantries,
commonly called travellers—Travelling gantry—Gantries
which serve as a base for lighter forms of
scaffolding—Stagings—Pole scaffolds—Bricklayers’
scaffolds—Masons’ scaffolds—Connections 1-29

CHAPTER II

_SCAFFOLDS FOR SPECIAL PURPOSES_

Needle scaffolding—Scaffolds for chimney shafts,
towers and steeples—Domes and arches—Swinging
scaffolds—Painters’ boats—Boatswain’s boat—Ladder
scaffolds—Supported painter’s boat 30-48

CHAPTER III

_SHORING AND UNDERPINNING_

Shoring—Flying shores—Raking shores—Underpinning 49-61

CHAPTER IV

_TIMBER_

Classification and structure—Defects in the living
tree—Felling—Conversion—Seasoning—Description—Selection
—Decay—Preservation—Durability—Use of scaffolding timber 62-75

CHAPTER V

_CORDAGE AND KNOTS_

Cordage—Strength of—Knots 76-89

CHAPTER VI

_SCAFFOLDING ACCESSORIES AND THEIR USE_

Ladders—Trestles—Cripples—Buckets and
skips—Baskets—Barrows—Stone bogies—Hand
barrows—Hods—Timber trucks—Sack trucks—Crates—Ashlar
shears—Stone clips and slings—Stone lewises—Stone
cramps—Wire and chain scaffold lashings—Tightening
screws—Rollers—Levers—Dog irons—Bolts—Straps—Wire
ropes—Chains—Slater’s truss—Duck runs—Mortar
boards—Wedges—Nails—Spikes—Scaffolder’s hatchet 90-114

CHAPTER VII

_THE TRANSPORT OF MATERIAL_

Crane engines—The crane—Pulleys—Differential
pulleys—Winch—Jibs—Shears—Gin—Rails—Sack
trucks—Attachment of material—Ironwork—Timber
—Bricks—Slates—Stone 115-130

CHAPTER VIII

_THE STABILITY OF A SCAFFOLD_

Stability—Wind pressures—Force of weight or gravity—To
find the centre of gravity of a body—Two or more
bodies—Of a dependent scaffold and the effect of loads
upon it—Of a gantry—Of a Scotch derrick 131-142

CHAPTER IX

_THE STRENGTH OF A SCAFFOLD_

Failure of beams—Pillars and struts—Ties and
traces—Dead loads—Live loads—Breaking weight—Safe
load—Constants—Beams subject to a transverse
strain—Posts and struts subject to compression—Braces
and ties subject to a tensional strain 143-153

CHAPTER X

_THE PREVENTION OF ACCIDENTS_

Short ladders—Sagging of ladders—Guard rails—Well
holes—Edge boards—Traps—Runs—Supports to centering—Damp
cordage—Sound material—Competent control—Fan guards—Due
care by workmen 154-160

CHAPTER XI

_LEGAL MATTERS AFFECTING SCAFFOLDING_

Scaffolding bye-laws—Burgh Police (Scotland) Act—Factory
and Workshop Act, 1901—Abstract of same, issued from
the Home Office—Notice of Accident Act—Report on
Building Accidents by a Home Office Inspector—Workmen’s
Compensation Act, 1906—Application of Act and definitions
161-178C