Name: BSI PD 6688-1-4:2015 - TC PDF - PDF Standards Store
Price: 280.87 USD
Availability: InStock

PDF Catalog

PDF Pages	PDF Title
104	Foreword
106	Introduction 1 Scope 2 UK National Annex to BS EN 1991-1-4:2005
107	Figure 1 An example of altitude correction factors
109	Figure 2 Hill parameters in undulating terrain
116	3 Data that can be used in conjunction with BS EN 1991-1-4:2005
117	Figure 3 Typical examples of buildings with re-entrant corners and recessed bays
118	Figure 4 Examples of flush irregular walls
119	Figure 5 Keys for walls of inset storey
120	Figure 6 Key for inset storey Figure 7 Key to canopies attached to buildings Table 1 Global vertical force coefficients for canopies attached to tall buildings
121	Table 2 Internal pressure coefficients cpi for open-sided buildings Table 3 Internal pressure coefficients cpi for open-topped vertical cylinders
122	Figure 8 Wind directions for a rectangular plan building
124	Figure 9 Key for vertical walls of buildings Figure 10 Definitions of crosswind breadth and in wind depth Table 4 External pressure coefficients Cpe for vertical walls of rectangular-plan buildings
125	Table 5 Reduction factors for zone A on vertical walls of polygonal‑plan buildings
126	Annex A (informative) Vortex shedding and aeroelastic instabilities
129	Table A.1 Strouhal numbers St for different cross-sections
130	Figure A.1 Strouhal number St for rectangular cross-sections with sharp corners Figure A.2 Strouhal number St for bridge decks
132	Figure A.3 Bridge types and reference dimensions
133	Figure A.4 Bridge deck details
136	Table A.2 Basic value of the lateral force coefficient clat,0 for different cross-sections
137	Figure A.5 Basic value of the lateral force coefficient clat,0 versus Reynolds number Re(vcrit,i) Table A.3 Lateral force coefficient clat versus critical wind velocity ratio vcrit,i/vm,Lj
138	Figure A.6 Examples for application of the correlation length Lj (j = 1, 2, 3)
139	Table A.4 Effective correlation length Lj as a function of vibration amplitude yF(sj)
140	Table A.5 Correlation length factor KW and mode shape factor K for some simple structures
142	Figure A.7 In-line and grouped arrangements of cylinders
144	Table A.6 Constants for determination of the effect of vortex shedding
147	Table A.7 Assessment of vortex excitation effects
149	Table A.8 Factor of galloping instability aG
150	Table A.9 �Data for the estimation of crosswind response of coupled cylinders at in-line and grouped arrangements
153	Figure A.8 Geometric parameters for interference galloping
154	Figure A.9 �Rate of change of aerodynamic moment coefficient dcM/dθ with respect to geometric centre “GC” for rectangular section
157	Annex B (informative) Along-wind response of lattice towers
159	Figure B.1 Gust peak factor (Davenport’s g) Table B.1 �Length scale zLu for a single roughness change from sea to country terrain, for an upwind fetch from site to sea of x(km)
161	Figure B.2 Definition of fetch for two roughness changes Table B.2 Length scale for zLu for two roughness changes where x1 = 0,1 km for an upwind fetch of x km
162	Table B.3 Length scale for zLu for two roughness changes where x1 = 0,3 km for an upwind fetch of x km Table B.4 Length scale for zLu for two roughness changes where x1 = 1 km for an upwind fetch of x km
163	Table B.5 Length scale for zLu for two roughness changes where x1 = 3 km for an upwind fetch of x km Table B.6 Length scale for zLu for two roughness changes where x1 = 10 km for an upwind fetch of x km
164	Table B.7 Length scale for zLu for two roughness changes where x1 = 30 km for an upwind fetch of x km
165	Figure B.3 Fictitious square lattice tower with 12 panels
166	Table B.8 Meteorological parameters
167	Table B.9 Non‑dimensional coefficients, wind forces and wind moments
168	Table B.10 Values of c(z) c(z’)
169	Table B.11 Values of C(z‑z’) Table B.12 Values of c(z) c(z’) C(z‑z’)
171	Table B.13 Non‑dimensional coefficients and wind forces
172	Table B.14 Values of c(z) c(z’) Table B.15 Values of c(z) c(z’) C(z‑z’)
173	Table B.16 Non‑dimensional coefficients, wind forces and moments
175	Table B.17 Values of c(z) c(z’)
176	Table B.18 Values of C(z‑z’) Table B.19 Values of c(z) c(z’) C(z‑z’)
178	Table B.20 Non‑dimensional coefficients and wind forces
179	Table B.21 Values of c(z) c(z’) Table B.22 Values of c(z) c(z’) C(z‑z’)
181	Table B.23 Non‑dimensional coefficients and wind forces
182	Figure B.4 Illustration of parameters for shear patch loading
183	Table B.24 Lever arms, wind loads and moments above zip Table B.25 Lever arms, wind loads and moments below zip
185	Table B.26 Values of c(z) c(z’)
186	Table B.27 Valuesof C(z‑z’) Table B.28 Values of c(z) c(z’) C(z‑z’)
188	Table B.29 Meteorological parameters Table B.30 Non‑dimensional coefficients, wind forces and wind moments
190	Table B.31 Values of c(z) c(z’)
191	Table B.32 Values of C(z‑z’) Table B.33 Values of c(z) c(z’) C(z‑z’)
193	Table B.34 Large ancillary wind resistance
195	Bibliography

Published By	Publication Date	Number of Pages
BSI	2020	201


PDF Format	Searchable	Printable	Preview Now

Status	Under Review
Pages	201
Publication Date	2020-02-25
ISBN	978 0 539 08517 4
Standard Number	PD 6688-1-4:2015 – TC
Title	Tracked Changes. Background information to the National Annex to BS EN 1991-1-4 and additional guidance
Descriptors	Roofs, Pressure, Structural design, Design calculations, Loading, Climatic loading, Angles (geometry), Wind loading, Buildings, Dynamic pressure, Topography, Structural systems, Velocity, Walls, Chimneys, Aerodynamic characteristics, Bridges, Construction engineering works, Structures
Publisher	BSI
Committee	B/525
ICS Codes	91.010.30 - Technical aspects

BSI PD 6688-1-4:2015 – TC:2020 Edition

PDF Catalog

Related products

BSI PD 6688-1-4:2015