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History
Design considerations, General, Choice of site, Choice of
structure, Economic considerations, Environmental considerations,
Electronic considerations, General, Antenna characteristics,
Low-frequency antennas, Medium-frequency antenna systemsVHF and UHF
antennas, Digital audio broadcasting, Mobile phone antennas, Effect
on existing services of subsequent additional antennas
Failures of masts and towers, GeneralIcing failures, Design/detail
failures, Maintenance failures, Aircraft damage, Vandal damage,
Lessons to be learned
Forms of structure, General, Timber towers, Concrete towers,
Lattice steel towers, Lattice guyed masts, Tubular guyed masts,
Concrete guyed masts, Other forms of communication structures
Meteorological parameters, GeneralWind, Wind climate, Boundary
layer, Serviceability wind speeds, Atmospheric icing,
GeneralPhysics and theoretical modelling of ice accretion,
Empirical models to estimate ice loads on Structures, Earthquakes,
Temperature, Other meteorological aspects
Wind resistance, General, Symmetrical structures without
ancillaries, Symmetrical structures with limited ancillaries,
General method for structures containing ancillariesLinear
ancillaries, Discrete ancillaries, CablesCommunications structures,
Measurements on scale model of communications tower, Discrepancy
between wind tunnel tests and full-scale measurements, Icing
Response, General, Lattice towers, Guyed masts, General, Frequency
domain analysis, Time domain analysis, Simplified methods,
Summary
Strength, Introduction, Design against buckling — individual
members, General, Influence of local and torsional buckling, Angle
leg members, Angle bracing members, Tubular leg members, Tubular
bracing members, Solid round members, Secondary members
(`redundants’)Bracing types, Compound members, Tension,
Connections, General, Flange joints in tubular or solid round leg
members, Guy connections
Cables, General, Types of cables, Strength of guy ropes, Rotational
characteristics of steel ropes, Modulus of elasticity,
Prestretching, Still air tension, Terminations, General, Types of
terminations
Aerodynamic stability, General, Vortex shedding, GeneralBackground
and critical wind speed, Practical implications, Damping devices,
Galloping, General, Critical wind speed, Damping devices
Fatigue, General, Lattice towers, Lattice masts, Guys
Foundations,General,Foundation types,Type I: to resist upliftType
II: to resist overturningType III: to resist down thrustType IV:
guy anchorages
Codes and standards,History General, Wind loadingIce loading,
Strength, Other aspects, Current codes, Communications structures,
GeneralComparison of current, Codes
Access and safety, General, IASS Recommendations for safe
access
Fabrication and erection, Materials and fabrication, Steel for
towers and mast columns, Aluminium, Timber, Plastics, Erection,
General, Erection of lattice towers,Constraints, Minimizing
maintenance at the design stage, Manuals
Seismic response, General, Seismicity and earthquake-resistance
performance levels, Prediction of seismic response of structures,
General, Self-supporting lattice towers, Monopoles, Guyed masts,
Antennas and ancillary components, Geotechnical considerations
Annex A Codes of Practice and Design Standards, General,
Comparisons of National Codes, Scope, Limit states/reliability
classes, Wind structure, Wind resistance, Ice loading,
Displacements/serviceability, Partial safety factors, Strength,
Compressive strength, Tensile strength, Guy assemblies,
Prestretching, Terminations, Initial tensions, Erection,
Insulators, Access
Annex B IASS Working Group Number 4: Masts and Towers, Brief
history, Role in the future, The members of the Group, References,
Index
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