{"id":216581,"date":"2024-10-19T14:02:53","date_gmt":"2024-10-19T14:02:53","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-59752019-tc\/"},"modified":"2024-10-25T07:07:00","modified_gmt":"2024-10-25T07:07:00","slug":"bs-59752019-tc","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-59752019-tc\/","title":{"rendered":"BS 5975:2019 – TC"},"content":{"rendered":"

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
1<\/td>\ncompares BS 5975:2019 <\/td>\n<\/tr>\n
2<\/td>\nTRACKED CHANGES
Test example 1 <\/td>\n<\/tr>\n
3<\/td>\nBS 5975:2019 to BS 5975:2008+A1:2011 <\/td>\n<\/tr>\n
10<\/td>\nPublication history <\/td>\n<\/tr>\n
17<\/td>\nForeword
Publishing information
Supersession
Information about this document <\/td>\n<\/tr>\n
19<\/td>\nUse of this document
Presentational conventions
Contractual and legal considerations <\/td>\n<\/tr>\n
20<\/td>\nIntroduction <\/td>\n<\/tr>\n
21<\/td>\nSection 1: General
1 Scope
2 Normative references <\/td>\n<\/tr>\n
23<\/td>\n3 Terms and definitions
3.1 adjustable telescopic steel prop <\/td>\n<\/tr>\n
24<\/td>\n3.2 asset
3.23.3 backpropping
3.33.4 base plate
3.43.5 bay length
3.53.6 beam bearer
3.63.7 blinding
3.73.8 brace
3.83.9 camber
3.93.10 characteristic strength
3.10 Checks
3.10.1 check
3.10.2 design check
3.11 check list <\/td>\n<\/tr>\n
25<\/td>\n3.12 client
3.113.13 competent person\/organization
3.123.14 component
3.15 contractor
3.133.16 coupler
3.17 design certificate
3.18 design statement
3.19 designated individual (DI)
3.20 domestic client <\/td>\n<\/tr>\n
26<\/td>\n3.143.21 effective length
3.153.22 factor of safety
3.163.23 falsework
3.173.24 floor centre
3.183.25 forkhead
3.193.26 formwork
3.203.27 frame
3.213.28 grade stress
3.29 hold point
3.30 inspection and test plan (ITP)
3.223.31 joint pin
3.233.32 joist <\/td>\n<\/tr>\n
27<\/td>\n3.243.33 kentledge
3.253.34 lacing
3.263.35 node
3.273.36 permissible stress
3.283.37 permit to load
3.29 permit to strike
permit to dismantle
3.303.38 primary
3.313.39 prop
3.40 quality control check list
3.323.41 re-propping
3.333.42 scaffold
3.343.43 soffit
3.353.44 sole plate
sill <\/td>\n<\/tr>\n
28<\/td>\n3.363.45 standard
3.373.46 strength class
3.383.47 strut
3.48 sub-consultant
3.49 sub-contractor
3.393.50 sway
3.40 temporary works
3.413.51 temporary works co-ordinator (TWC)
3.423.52 temporary works supervisor (TWS)
3.53 third party
3.433.54 top restraint
3.443.55 tower <\/td>\n<\/tr>\n
29<\/td>\n3.453.56 wedge
4 Abbreviations and symbols <\/td>\n<\/tr>\n
33<\/td>\n5 Legislation
5.1 General <\/td>\n<\/tr>\n
34<\/td>\n5.2 The Health and Safety at Work, etc. Act 1974
5.3 The Management of Health and Safety at Work Regulations 1999
5.4 The Personal Protective Equipment at Work Regulations 1992 <\/td>\n<\/tr>\n
35<\/td>\n5.5 Work at Height Regulations 2005 as amended by the Work at Height (Amendment) Regulations 2007
5.6 The Lifting Operations and Lifting Equipment Regulations 1998 <\/td>\n<\/tr>\n
37<\/td>\n5.7 The Provision and Use of Work Equipment Regulations 1998 (as amended)
5.8 Construction (Design and Management) Regulations 2007 <\/td>\n<\/tr>\n
40<\/td>\nOther relevant regulations include: Reg. 33, Reports of inspections (and also Schedule 3); Reg. 34, Energy distribution systems, which deals with both electric power cables and other underground services (e.g. gas, water, etc.), including the risks to…
5 Overview of temporary works procedures and training
5.1 Overview of procedures
5.1.1 General <\/td>\n<\/tr>\n
42<\/td>\n5.1.2 Summary of control measures <\/td>\n<\/tr>\n
43<\/td>\n5.1.3 Organizations involved in temporary works <\/td>\n<\/tr>\n
44<\/td>\n5.1.4 Responsibilities where a contractor co-ordinates the temporary works <\/td>\n<\/tr>\n
47<\/td>\n5.1.5 Responsibilities where a contractor co-ordinates their own temporary works <\/td>\n<\/tr>\n
50<\/td>\n5.2 Training <\/td>\n<\/tr>\n
52<\/td>\nSection 2: Procedural control of temporary works
6 Procedures
6.1 Introduction to procedural control
6.16.1.1 General <\/td>\n<\/tr>\n
53<\/td>\n6.2 Control of procedures <\/td>\n<\/tr>\n
54<\/td>\n6.3 Roles and responsibilities of organizations
6.3.1 Organizational aspects <\/td>\n<\/tr>\n
55<\/td>\n6.3.2 Site related aspects
6.1.2 Designated individual <\/td>\n<\/tr>\n
56<\/td>\n6.1.3 Control of risk <\/td>\n<\/tr>\n
58<\/td>\n6.1.4 Organization roles and procedures
6.2 Temporary works register <\/td>\n<\/tr>\n
59<\/td>\n7 Clients\u2019 procedures
7.1 General (Commercial\/public clients) <\/td>\n<\/tr>\n
60<\/td>\n7.2 Clients appointing contractors other than PCs
7.3 Client’s DI <\/td>\n<\/tr>\n
61<\/td>\n7.4 Domestic clients <\/td>\n<\/tr>\n
62<\/td>\n8 Designers\u2019 procedures
8.1 General <\/td>\n<\/tr>\n
63<\/td>\n8.2 Designers’ DI
8.3 Permanent works designers <\/td>\n<\/tr>\n
64<\/td>\n8.4 Temporary works designers
8.4.1 General
8.4.2 Lead designers (in relation to temporary works design)
8.5 Principal designers <\/td>\n<\/tr>\n
65<\/td>\n9 Contractors\u2019 procedures
6.49.1 Organizational interfaces <\/td>\n<\/tr>\n
66<\/td>\n9.2 Contractors’ DI <\/td>\n<\/tr>\n
67<\/td>\n9.3 Responsibilities
9.3.1 General <\/td>\n<\/tr>\n
68<\/td>\n9.3.2 Appointment of the PC’s TWC
9.3.3 Appointment of the TWC (not appointed by the PC) <\/td>\n<\/tr>\n
69<\/td>\n9.3.4 Appointment of the TWS
9.4 Principal contractor
9.5 Contractors other than PC
9.5.1 General <\/td>\n<\/tr>\n
70<\/td>\n9.5.2 Contractor(s) appointed by the client
9.6 Third-party employed contractor <\/td>\n<\/tr>\n
71<\/td>\n7 Appointment of the temporary works co-ordinator and the temporary works supervisor
7.1 Appointment of the temporary works co-ordinator
10 Supplier\/manufacturer procedures
10.1 Suppliers of temporary works equipment
10.2 Suppliers\u2019 DI
10.3 Suppliers\u2019 procedures <\/td>\n<\/tr>\n
72<\/td>\n10.4 Verification of design information
10.5 Provision of information
10.6 Provision of design data <\/td>\n<\/tr>\n
73<\/td>\n10.7 Provision of information for the safe use of equipment
10.8 Standard solutions
7.211 Responsibilities of the temporaryTemporary works co-ordinator
11.1 General
11.2 The PC’s TWC
11.2.1 General
11.2.2 Role of the PC\u2019s TWC <\/td>\n<\/tr>\n
75<\/td>\n11.2.3 Duties of the PC\u2019s TWC <\/td>\n<\/tr>\n
76<\/td>\n11.2.4 Duties of the PC\u2019s TWC in relation to other contractors
11.3 The TWC (other than the PC’s TWC)
11.3.1 General <\/td>\n<\/tr>\n
77<\/td>\n11.3.2 Role of the TWC
11.3.3 Duties of the TWC <\/td>\n<\/tr>\n
79<\/td>\n7.3 Appointment of the temporary works supervisor(s)
7.4 Responsibilities of the temporary works supervisor(s)
12 Temporary works supervisor
12.1 General <\/td>\n<\/tr>\n
80<\/td>\n12.2 Role of the TWS
12.3 Duties of the TWS <\/td>\n<\/tr>\n
81<\/td>\n813 Design briefof temporary works
13.1 General
13.2 Design brief <\/td>\n<\/tr>\n
83<\/td>\n913.3 Design guidance
9.1 General <\/td>\n<\/tr>\n
85<\/td>\n9.2 Design check
9.3 Avoidance of progressive collapse
9.413.4 Choice of temporary works solution <\/td>\n<\/tr>\n
86<\/td>\n9.513.5 Selection of materials and components
13.6 Design output <\/td>\n<\/tr>\n
87<\/td>\n13.7 Design check <\/td>\n<\/tr>\n
89<\/td>\n13.8 Resolution of queries raised by the design checker
10 Co-ordination and supervision of work on site <\/td>\n<\/tr>\n
90<\/td>\n11 Checking on site
11.1 General
11.2 When to check <\/td>\n<\/tr>\n
91<\/td>\n1213.9 Alterations
13.10 Standard solutions <\/td>\n<\/tr>\n
92<\/td>\n14 Site considerations
14.1 Co-ordination, supervision and checking of work on site <\/td>\n<\/tr>\n
93<\/td>\n14.2 Loading and unloading temporary works
1314.2.1 Loading (bringing ) the temporary works (into service)into use)
14.2.2 Unloading (taking out of use) <\/td>\n<\/tr>\n
94<\/td>\n1414.3 Dismantling <\/td>\n<\/tr>\n
95<\/td>\nSection 3: Falsework
15 General
16 Materials
16.1 General considerations
16.1.1 Suitability of materials
16.1.2 Identification and properties
16.1.3 Handling of materials and components
16.2 Testing and inspection
16.2.1 Testing <\/td>\n<\/tr>\n
96<\/td>\n16.2.2 Inspection
16.3 Steelwork (other than scaffold tube)
16.3.1 Quality of steel
16.3.2 Identification of steel
16.3.3 Permissible stresses <\/td>\n<\/tr>\n
97<\/td>\n16.3.4 Section properties
16.3.5 Fatigue
16.3.6 Welding and rectification of steelwork
16.4 Timber
16.4.1 Timber quality <\/td>\n<\/tr>\n
101<\/td>\n16.4.2 Modification factors <\/td>\n<\/tr>\n
106<\/td>\n16.4.4 Grading used timber
16.5 Concrete and concrete components
16.5.1 Mix design <\/td>\n<\/tr>\n
107<\/td>\n16.5.2 Blinding concrete
16.5.3 Spread footings
16.5.4 New structural members
16.5.5 Second-hand structural members
16.5.6 Precast concrete <\/td>\n<\/tr>\n
108<\/td>\n16.6 Brickwork and blockwork
16.6.1 Design
16.6.2 Rate of building
16.6.3 Age of loading
16.6.4 Reinforced brickwork and blockwork
16.6.5 Salvaged bricks and blocks
16.7 Other materials
16.7.1 General
16.7.2 Permissible stresses
16.7.3 Deterioration <\/td>\n<\/tr>\n
109<\/td>\n16.8 Steel scaffold tubes, couplers and other fittings
16.8.1 Equipment in general use
16.8.2 Non-standard scaffold tubes
16.8.3 Loads on scaffold tube struts <\/td>\n<\/tr>\n
110<\/td>\n16.8.4 Straightening of scaffold tubes
16.8.5 Corrosion and deterioration of steel scaffold tube and fittings
16.8.6 Scaffold fittings
16.8.7 Deterioration of scaffold couplers and fittings
16.9 Manufactured components for falsework
16.9.1 Types of manufactured components <\/td>\n<\/tr>\n
111<\/td>\n16.9.2 Design and testing of manufactured components
16.9.3 Information from the supplier
16.9.4 Factors of safety
16.9.5 Framed or braced tower components for vertical load bearing <\/td>\n<\/tr>\n
112<\/td>\n16.9.6 Adjustable steel props <\/td>\n<\/tr>\n
115<\/td>\n16.9.8 Floor centres <\/td>\n<\/tr>\n
116<\/td>\n16.9.9 Proprietary beams
16.9.10 Spanning girders
16.9.11 Military trestling systems
17.1 General <\/td>\n<\/tr>\n
117<\/td>\n17.2 Weights of materials
17.3 Self-weights
17.4 Imposed loads
17.4.1 General
17.4.2 Permanent works loading <\/td>\n<\/tr>\n
118<\/td>\n17.4.3 Construction operations <\/td>\n<\/tr>\n
120<\/td>\n17.5 Environmental loads
17.5.1 Wind loading <\/td>\n<\/tr>\n
138<\/td>\n17.5.3 Snow
17.5.4 Ice <\/td>\n<\/tr>\n
139<\/td>\n17.5.5 Earth pressure <\/td>\n<\/tr>\n
141<\/td>\n18.1 General
18.1.1 Introduction <\/td>\n<\/tr>\n
142<\/td>\n18.1.2 Slope and stability
18.1.3 Depth of foundations
18.2 Site investigation for falsework foundations <\/td>\n<\/tr>\n
143<\/td>\n18.3 Testing of soils <\/td>\n<\/tr>\n
145<\/td>\n18.4 Allowable bearing pressures
18.5 Modification factors applied to presumed bearing pressures
18.5.1 Modification factor for reliability of site information
18.5.2 Settlements of the foundations underneath the falsework <\/td>\n<\/tr>\n
146<\/td>\n18.5.3 Ground water levels
18.6 Simple foundations on sands and gravels
18.7 Simple foundations on cohesive soils
18.8 Heavy vibrations <\/td>\n<\/tr>\n
147<\/td>\n18.9 Fill material
18.10 Piles
18.11 Protection of the foundation area <\/td>\n<\/tr>\n
148<\/td>\n19 Design of falsework
19.1 Preamble to design
19.1.1 General
19.1.2 CDM regulations and interface between design of permanent and temporary works
19.1.3 Design brief <\/td>\n<\/tr>\n
149<\/td>\n19.1.4 Choice of concept <\/td>\n<\/tr>\n
151<\/td>\n19.1.5 Selection of materials and components
19.2 Forces applied to falsework
19.2.1 General <\/td>\n<\/tr>\n
152<\/td>\n19.2.2 Vertical forces
19.2.3 Wind forces
19.2.4 Forces resulting from erection tolerance <\/td>\n<\/tr>\n
153<\/td>\n19.2.5 Forces resulting from out of vertical by design
19.2.6 Concrete pressure forces
19.2.7 Water and wave forces
19.2.8 Dynamic and impact forces
19.2.9 Notional lateral forces to be considered <\/td>\n<\/tr>\n
154<\/td>\n19.2.10 Forces from the permanent structure
19.3 Analysis of the structure
19.3.1 General (behaviour of the structure) <\/td>\n<\/tr>\n
155<\/td>\n19.3.2 Lateral restraint <\/td>\n<\/tr>\n
159<\/td>\n19.3.3 Combinations of forces <\/td>\n<\/tr>\n
161<\/td>\n19.3.4 Back-proppingBackpropping in multi-storey construction <\/td>\n<\/tr>\n
162<\/td>\n19.4 Design
19.4.1 General <\/td>\n<\/tr>\n
167<\/td>\n19.4.2 Check one \u2013 Structural strength <\/td>\n<\/tr>\n
174<\/td>\n19.4.4 Check three \u2013 Overall stability <\/td>\n<\/tr>\n
180<\/td>\n19.6 Foundations
19.6.1 Purpose of foundations <\/td>\n<\/tr>\n
181<\/td>\n19.6.2 Supported on permanent works foundations
19.6.3 Supported on the ground <\/td>\n<\/tr>\n
183<\/td>\n19.7.1 Clear span falsework systems
19.7.2 Independent towers in groups
19.7.3 Falsework (or centring) for arches <\/td>\n<\/tr>\n
185<\/td>\n19.7.4 Horizontal or raking falsework
19.7.5 Mobile and travelling falsework
19.7.6 Using scaffold tube and fittings <\/td>\n<\/tr>\n
187<\/td>\n19.7.7 Sloping soffits
20.1 Introduction
20.2 Specific design instructions
20.3 General workmanship
20.3.1 Critical factors of workmanship <\/td>\n<\/tr>\n
188<\/td>\n20.3.2 Accuracy of falsework <\/td>\n<\/tr>\n
190<\/td>\n20.3.3 Vertical movement
20.3.4 Top arrangements <\/td>\n<\/tr>\n
191<\/td>\n20.3.5 Wedging
20.3.6 Lacing and bracing
20.3.7 Importance of details <\/td>\n<\/tr>\n
192<\/td>\n20.4 Checking falsework
20.4.1 When to check
20.4.2 Items to be checked <\/td>\n<\/tr>\n
193<\/td>\n20.5 Application of loads to falsework <\/td>\n<\/tr>\n
194<\/td>\n20.6 Dismantling
20.6.1 General
20.6.2 Supports required after general dismantling <\/td>\n<\/tr>\n
195<\/td>\n20.7 Maintenance, inspection and identification of materials <\/td>\n<\/tr>\n
196<\/td>\nAnnex A (normative)
A.1 Permissible stresses <\/td>\n<\/tr>\n
197<\/td>\nA.2 Young\u2019s modulus <\/td>\n<\/tr>\n
200<\/td>\nAnnex B (normative)
B.1 Properties of steel scaffold tube complying with the requirements of BS EN 39:2001 and BS 1139-1:1982
B.2 Axial compressive stress
\u03b3m = 1.1 <\/td>\n<\/tr>\n
201<\/td>\nB.3 Safe working loads for scaffold fittings complying withconforming to the requirements of BS 1139-2.2:1991 <\/td>\n<\/tr>\n
206<\/td>\nAnnex C (normative)
C.1 Introduction
C.2 Tests on falsework equipment
C.3 Prototype and initial testing <\/td>\n<\/tr>\n
207<\/td>\nC.4 Quality control of manufacture <\/td>\n<\/tr>\n
208<\/td>\nAnnex D (normative)
D.1 Concrete shrinkage and creep
D.2 Coefficient of linear expansion\/contraction
D.3 Modulus of elasticity4)
D.4 Density of reinforced concrete <\/td>\n<\/tr>\n
209<\/td>\nD.5 Masses and densities of materials
D.6 Masses of corrugated steel sheeting
D.7 Some unusual loads that frequently require consideration <\/td>\n<\/tr>\n
212<\/td>\nAnnex E (normative)
Wave forces
E.1 Definitions
E.1.1 bore
E.1.2 clapotis
E.1.3 fetch
E.1.4 still water depth, d
E.1.5 still water level
E.1.6 wave height, H
E.1.7 wavelength, L
E.2 General <\/td>\n<\/tr>\n
213<\/td>\nE.3 Non-breaking waves <\/td>\n<\/tr>\n
215<\/td>\nAnnex F (normative)
F.1 Introduction
F.2 General
F.3 Preliminary appraisal
F.4 Depths for investigation and sampling <\/td>\n<\/tr>\n
216<\/td>\nF.5 Laboratory tests
F.6 Final report and recommendations <\/td>\n<\/tr>\n
217<\/td>\nAnnex G (informative)
G.1 Design brief for a motorway bridge <\/td>\n<\/tr>\n
218<\/td>\nG.2 Design brief for a suspended floor in a building <\/td>\n<\/tr>\n
219<\/td>\nAnnex H (informative)
H.1 General
H.2 Freestanding support of sloping soffits
H.3 Forces in a simple situation
H.4 Forces when the top and base of concrete are sloping without a topform <\/td>\n<\/tr>\n
220<\/td>\nH.5 Forces when the top and base of the concrete are sloping with a top form
H.6 Forces when opposing forms are not tied together
H.7 Application of forces to freestanding falsework <\/td>\n<\/tr>\n
221<\/td>\nH.8 Support of sloping soffits cast against existing structures
H.8.1 General
H.8.2 Loads applied to falsework <\/td>\n<\/tr>\n
222<\/td>\nH.9 Arch falsework <\/td>\n<\/tr>\n
223<\/td>\nAnnex I (informative) Blank <\/td>\n<\/tr>\n
224<\/td>\nAnnex J (normative)
J.1 General
J.2 Beams without bearing stiffeners <\/td>\n<\/tr>\n
229<\/td>\nJ.3 Design of bearing stiffeners <\/td>\n<\/tr>\n
230<\/td>\nJ.4 Hollow sections <\/td>\n<\/tr>\n
231<\/td>\nAnnex K (normative)
Effective lengths of steel members in compression
K.1 General
K.2 Effective length for axial compression <\/td>\n<\/tr>\n
232<\/td>\nK.3 Effective length for simply supported or continuous beams
K.3.1 Beams with intermediate lateral restraints
K.3.2 Beams without intermediate lateral restraints <\/td>\n<\/tr>\n
234<\/td>\nK.4 Effective length for cantilever beams
K.4.1 Cantilevers with intermediate restraints
K.4.2 Cantilevers without intermediate restraints
K.5 Effective torsional end restraint <\/td>\n<\/tr>\n
235<\/td>\nK.6 Effective lateral restraint
K.6.1 General
K.6.2 Girder restraint bracing design
K.6.3 Girder restraint from external points <\/td>\n<\/tr>\n
239<\/td>\nAnnex L (informative)
L.1 General
L.2 The BS EN 1991-1-4:2005+A1 basic equations <\/td>\n<\/tr>\n
241<\/td>\nL.3 Derivation of wind calculation in BS 5975:2008+A1
L.3.1 General \u2013 Simplified velocity pressure for falsework, qp
L.3.2 Altitude correction factor, calt
The altitude correction factor calt in NA to BS EN 1991-1-4:2005+A1, NA.2.5 is used to adjust the basic wind speed for the altitude above sea level.
or else for z > 10 m:
(L.10)
A is the altitude of the site in metres. <\/td>\n<\/tr>\n
242<\/td>\n(L.11)
L.3.3 Direction factor, cdir <\/td>\n<\/tr>\n
243<\/td>\nL.3.5 Probability factor, cprob
L.3.6 Orography factor, co <\/td>\n<\/tr>\n
244<\/td>\nL.3.7 Topography factor, Twind <\/td>\n<\/tr>\n
246<\/td>\nL.4 Wind calculation for structures >50 m where orography is significant
L.4.1 General
Where the value of z is greater than 50 m then the peak velocity pressure is calculated by applying a roughness factor cr(z) to the mean wind velocity vm and applying the peak factor model to it. The air is less turbulent at higher levels, and the ter… <\/td>\n<\/tr>\n
247<\/td>\nL.4.2 Combined roughness factor, cr (z) cr,T
Where a site is in a town, NA to BS EN 1991-1-4:2005+A1 applies a correction factor cr,T, shown graphically in Figure NA.4, to reduce the country roughness depending on how far the site is inside the town. Figure NA.4 regards any structure less than 0…
If you consider 3 m high falsework in town, the reduction varies from 0.74 at 0.1 km, 0.65 at 2 km and 0.62 at 10 km inside the town. This standard considers towns if more than 2 km inside the edge of the town, then the designs will be conservative fo…
The approach in this standard is to combine the graphical roughness factor cr(z) and the town correction factor cr,T into a combined roughness factor in Table L.3. The roughness correction factor cr,T is unity in the country. Values for reference heig…
Table L.3 \u2014 Combined roughness factor, cr(z)cr,T
L.4.3 Turbulence intensity, IV (z)flat <\/td>\n<\/tr>\n
248<\/td>\nL.4.4 Orography factor, co <\/td>\n<\/tr>\n
249<\/td>\nL.4.5 Peak velocity pressure for structures 50 m to 100 m with significant orography <\/td>\n<\/tr>\n
251<\/td>\nL.5 The seasonal factor SS
L.6 The probability factor, Sp <\/td>\n<\/tr>\n
252<\/td>\nL.7 The simplified wind pressure equation <\/td>\n<\/tr>\n
253<\/td>\nAnnex M (normative)
M.1 Shielding of falsework \u2013 General
M.2 The shielding factor, \u03b7 <\/td>\n<\/tr>\n
254<\/td>\nBibliography <\/td>\n<\/tr>\n
259<\/td>\nIndex <\/td>\n<\/tr>\n
284<\/td>\nForeword <\/td>\n<\/tr>\n
286<\/td>\nIntroduction <\/td>\n<\/tr>\n
287<\/td>\nSection 1: General
1 Scope
2 Normative references <\/td>\n<\/tr>\n
289<\/td>\n3 Terms and definitions <\/td>\n<\/tr>\n
294<\/td>\n4 Abbreviations and symbols <\/td>\n<\/tr>\n
298<\/td>\n5 Overview of temporary works procedures and training
5.1 Overview of procedures <\/td>\n<\/tr>\n
302<\/td>\nFigure 1 \u2014 Typical contractual interfaces between parties on a project <\/td>\n<\/tr>\n
304<\/td>\nFigure 2 \u2014 Lines of responsibilities where a single contractor or a principal contractor (PC) is co-ordinating the temporary works <\/td>\n<\/tr>\n
306<\/td>\nFigure 3 \u2014 Lines of responsibility where either a principal contractor’s (PC) appointed sub-contractor or a client’s contractor co-ordinate their own temporary works <\/td>\n<\/tr>\n
307<\/td>\nFigure 4 \u2014 Schematic representation of relationships between principal contractor and contractor (client appointed or sub-contractor) including PC\u2019s TWC and contractor\u2019s TWC <\/td>\n<\/tr>\n
308<\/td>\n5.2 Training <\/td>\n<\/tr>\n
310<\/td>\nSection 2: Procedural control of temporary works
6 Procedures
6.1 Introduction to procedural control <\/td>\n<\/tr>\n
313<\/td>\nTable 1 \u2014 Implementation risk classes for temporary works and examples of mitigation measures <\/td>\n<\/tr>\n
314<\/td>\n6.2 Temporary works register <\/td>\n<\/tr>\n
315<\/td>\n7 Clients\u2019 procedures
7.1 General (Commercial\/public clients) <\/td>\n<\/tr>\n
316<\/td>\n7.2 Clients appointing contractors other than PCs
7.3 Client’s DI <\/td>\n<\/tr>\n
317<\/td>\n7.4 Domestic clients <\/td>\n<\/tr>\n
318<\/td>\n8 Designers\u2019 procedures
8.1 General <\/td>\n<\/tr>\n
319<\/td>\n8.2 Designers’ DI
8.3 Permanent works designers <\/td>\n<\/tr>\n
320<\/td>\n8.4 Temporary works designers
8.5 Principal designers <\/td>\n<\/tr>\n
321<\/td>\n9 Contractors\u2019 procedures
9.1 Organizational interfaces <\/td>\n<\/tr>\n
322<\/td>\n9.2 Contractors’ DI <\/td>\n<\/tr>\n
323<\/td>\n9.3 Responsibilities <\/td>\n<\/tr>\n
325<\/td>\n9.4 Principal contractor <\/td>\n<\/tr>\n
326<\/td>\n9.5 Contractors other than PC <\/td>\n<\/tr>\n
327<\/td>\n9.6 Third-party employed contractor
10 Supplier\/manufacturer procedures
10.1 Suppliers of temporary works equipment
10.2 Suppliers\u2019 DI <\/td>\n<\/tr>\n
328<\/td>\n10.3 Suppliers\u2019 procedures
10.4 Verification of design information
10.5 Provision of information
10.6 Provision of design data <\/td>\n<\/tr>\n
329<\/td>\n10.7 Provision of information for the safe use of equipment
10.8 Standard solutions
11 Temporary works co-ordinator
11.1 General
11.2 The PC’s TWC <\/td>\n<\/tr>\n
332<\/td>\n11.3 The TWC (other than the PC’s TWC) <\/td>\n<\/tr>\n
335<\/td>\n12 Temporary works supervisor
12.1 General
12.2 Role of the TWS <\/td>\n<\/tr>\n
336<\/td>\n12.3 Duties of the TWS
13 Design of temporary works
13.1 General <\/td>\n<\/tr>\n
337<\/td>\n13.2 Design brief <\/td>\n<\/tr>\n
338<\/td>\n13.3 Design guidance <\/td>\n<\/tr>\n
340<\/td>\n13.4 Choice of temporary works
13.5 Selection of materials and components
13.6 Design output <\/td>\n<\/tr>\n
341<\/td>\n13.7 Design check <\/td>\n<\/tr>\n
342<\/td>\nTable 2 \u2014 Categories of design check in temporary works <\/td>\n<\/tr>\n
343<\/td>\n13.8 Resolution of queries raised by the design checker <\/td>\n<\/tr>\n
344<\/td>\n13.9 Alterations
13.10 Standard solutions <\/td>\n<\/tr>\n
345<\/td>\n14 Site considerations
14.1 Co-ordination, supervision and checking of work on site <\/td>\n<\/tr>\n
346<\/td>\n14.2 Loading and unloading temporary works <\/td>\n<\/tr>\n
347<\/td>\n14.3 Dismantling <\/td>\n<\/tr>\n
348<\/td>\nSection 3: Falsework
15 General
16 Materials
16.1 General considerations
16.2 Testing and inspection <\/td>\n<\/tr>\n
349<\/td>\n16.3 Steelwork (other than scaffold tube) <\/td>\n<\/tr>\n
350<\/td>\n16.4 Timber <\/td>\n<\/tr>\n
351<\/td>\nTable 3 \u2014 Basic stresses and moduli of elasticity for the wet condition
Table 4 \u2014 Softwood species which satisfy strength classes in accordance with BS 4978 <\/td>\n<\/tr>\n
352<\/td>\nTable 5 \u2014 North American softwood species and grade combinations which satisfy strength classes in accordance with national lumber grades authority (NLGA) and national grading rules for dimension lumber (NGRDL) joist and plank rules
Table 6 \u2014 Hardwoods which satisfy the strength classes graded to BS 5756:2007 <\/td>\n<\/tr>\n
353<\/td>\nTable 7 \u2014 Preferred target sizes and actual dimensions for constructional sawn softwood timber <\/td>\n<\/tr>\n
354<\/td>\nTable 8 \u2014 Modification factor K3 for duration of load on falsework <\/td>\n<\/tr>\n
355<\/td>\nTable 9 \u2014 Modification factor K4 for bearing stress
Table 10 \u2014 Maximum depth-to-breadth ratios <\/td>\n<\/tr>\n
356<\/td>\nFigure 5 \u2014 Shear stress on a timber beam of rectangular cross-section <\/td>\n<\/tr>\n
357<\/td>\nTable 11 \u2014 Depth modification factor K7 for solid timbers less than 300 mm depth <\/td>\n<\/tr>\n
358<\/td>\nTable 12 \u2014 Permissible stresses and moduli of elasticity for general falsework applications
Table 13 \u2014 Permissible stresses and moduli of elasticity for load-sharing falsework applications <\/td>\n<\/tr>\n
359<\/td>\nTable 14 \u2014 Commercial grade timber suitable to produce mainly class C16 timber
16.5 Concrete and concrete components <\/td>\n<\/tr>\n
361<\/td>\n16.6 Brickwork and blockwork
16.7 Other materials <\/td>\n<\/tr>\n
362<\/td>\n16.8 Steel scaffold tubes, couplers and other fittings <\/td>\n<\/tr>\n
364<\/td>\n16.9 Manufactured components for falsework <\/td>\n<\/tr>\n
365<\/td>\nTable 15 \u2014 Adjustable steel prop heights <\/td>\n<\/tr>\n
366<\/td>\nFigure 6 \u2014 Safe working loads for BS 4074:1982 props erected 1.5\u00b0 out-of-plumb <\/td>\n<\/tr>\n
367<\/td>\nFigure 7 \u2014 Safe working load for BS 1065:1999 props erected 1\u00b0 maximum out\u2011of\u2011plumb and with up to 10 mm maximum eccentricity of loading <\/td>\n<\/tr>\n
368<\/td>\n17 Loads applied to falsework
17.1 General <\/td>\n<\/tr>\n
369<\/td>\n17.2 Weights of materials
17.3 Self-weights
17.4 Imposed loads <\/td>\n<\/tr>\n
372<\/td>\n17.5 Environmental loads <\/td>\n<\/tr>\n
376<\/td>\nFigure 8 \u2014 Fundamental basic wind velocity vb,map (in m\/s) <\/td>\n<\/tr>\n
377<\/td>\nFigure 9 \u2014 Topography factor Twind diagram <\/td>\n<\/tr>\n
378<\/td>\nTable 16 \u2014 Combined exposure factor, ce(z)ce,T <\/td>\n<\/tr>\n
379<\/td>\nFigure 10 \u2014 Displacement height diagram
Figure 11 \u2014 Town, country and sea <\/td>\n<\/tr>\n
382<\/td>\nTable 17 \u2014 Force coefficients cf for falsework <\/td>\n<\/tr>\n
384<\/td>\nFigure 12 \u2014 Wind on soffit parallel to secondary bearers
Figure 13 \u2014 Wind on soffit parallel to primary bearers <\/td>\n<\/tr>\n
386<\/td>\nFigure 14 \u2014 Wind on two edge forms
Figure 15 \u2014 Shelter factor <\/td>\n<\/tr>\n
387<\/td>\nFigure 16 \u2014 Wind on more than two edge forms <\/td>\n<\/tr>\n
388<\/td>\nFigure 17 \u2014 Wind loading \u2013 Combined formwork and unclad falsework (upper limit) <\/td>\n<\/tr>\n
395<\/td>\n18 Foundations and ground conditions
18.1 General
18.2 Site investigation for falsework foundations <\/td>\n<\/tr>\n
396<\/td>\nTable 18 \u2014 Presumed allowable bearing pressure under vertical static loading <\/td>\n<\/tr>\n
397<\/td>\n18.3 Testing of soils <\/td>\n<\/tr>\n
398<\/td>\nTable 19 \u2014 Identification and description of soils
18.4 Allowable bearing pressures <\/td>\n<\/tr>\n
399<\/td>\n18.5 Modification factors applied to presumed bearing pressures <\/td>\n<\/tr>\n
400<\/td>\nTable 20 \u2014 Ground water level modification factor
18.6 Simple foundations on sands and gravels
18.7 Simple foundations on cohesive soils
18.8 Heavy vibrations
18.9 Fill material <\/td>\n<\/tr>\n
401<\/td>\n18.10 Piles
18.11 Protection of the foundation area
19 Design of falsework
19.1 Preamble to design <\/td>\n<\/tr>\n
403<\/td>\nFigure 18 \u2014 Individual support members <\/td>\n<\/tr>\n
404<\/td>\nFigure 19 \u2014 Panels to facilitate the erection of individual prop systems (elevation)
Figure 20 \u2014 Individual fully braced tower
Figure 21 \u2014 Proprietary system, partially braced by discrete panels <\/td>\n<\/tr>\n
405<\/td>\nFigure 22 \u2014 Fully braced falsework system <\/td>\n<\/tr>\n
406<\/td>\n19.2 Forces applied to falsework <\/td>\n<\/tr>\n
408<\/td>\n19.3 Analysis of the structure <\/td>\n<\/tr>\n
410<\/td>\nFigure 23 \u2014 Free-standing structure
Figure 24 \u2014 Top-restrained structure <\/td>\n<\/tr>\n
411<\/td>\nFigure 25 \u2014 Plate action (plan view) <\/td>\n<\/tr>\n
412<\/td>\nFigure 26 \u2014 Restraint provided on one side of the plate (plan view)
Figure 27 \u2014 Restraint provided on two perpendicular sides of the plate (plan view)
Figure 28 \u2014 Restraint provided on two parallel (opposite) sides of the plate (plan view) <\/td>\n<\/tr>\n
413<\/td>\nFigure 29 \u2014 Restraint provided on three sides of the plate (plan view)
Figure 30 \u2014 Restraint provided on four sides of the plate (plan view)
Figure 31 \u2014 Restraint provided by four permanent works columns (plan view)
Figure 32 \u2014 Restraint provided by two permanent works columns (plan view) <\/td>\n<\/tr>\n
414<\/td>\nFigure 33 \u2014 Concrete pressures applied and the subsequent rotational forces induced (typical falsework plan) <\/td>\n<\/tr>\n
416<\/td>\nFigure 34 \u2014 Effects of eccentricity and sway on top-restrained structures
Figure 35 \u2014 Effects of eccentricity and sway on freestanding structures <\/td>\n<\/tr>\n
417<\/td>\nFigure 36 \u2014 Effects of FH on individual towers <\/td>\n<\/tr>\n
418<\/td>\nTable 21 \u2014 Example of percentage of load transfer for less than 350 mm flat slabs
19.4 Design <\/td>\n<\/tr>\n
419<\/td>\nTable 22 \u2014 Roles and responsibilities of temporary and permanent works designers <\/td>\n<\/tr>\n
420<\/td>\nTable 23 \u2014 Requirements for stability checks in top-restrained falsework <\/td>\n<\/tr>\n
421<\/td>\nTable 24 \u2014 Requirements for stability checks in free-standing structures <\/td>\n<\/tr>\n
423<\/td>\nFigure 37 \u2014 Typical, free-standing, fully braced scaffolding (elevation)
Figure 38 \u2014 Typical, top-restrained, fully braced scaffolding (elevation) <\/td>\n<\/tr>\n
425<\/td>\nFigure 39 \u2014 Member stability check for top-restrained systems (elevation)
Figure 40 \u2014 Considerations for partially braced frames <\/td>\n<\/tr>\n
426<\/td>\nFigure 41 \u2014 Member stability check for free-standing systems (elevation) <\/td>\n<\/tr>\n
427<\/td>\nFigure 42 \u2014 Considerations for free-standing partially braced frames <\/td>\n<\/tr>\n
428<\/td>\nFigure 43 \u2014 Effective lengths in tube and coupler falsework <\/td>\n<\/tr>\n
429<\/td>\nFigure 44 \u2014 Lateral stability check for top-restrained structures <\/td>\n<\/tr>\n
430<\/td>\nFigure 45 \u2014 Lateral stability check for free-standing structures <\/td>\n<\/tr>\n
431<\/td>\nFigure 46 \u2014 Working space and stability during erection, loading and dismantling <\/td>\n<\/tr>\n
433<\/td>\nFigure 47 \u2014 Lateral restraint provided by friction <\/td>\n<\/tr>\n
434<\/td>\nTable 25 \u2014 Recommended values of coefficient static friction \u03bc <\/td>\n<\/tr>\n
435<\/td>\n19.5 Beams and lattice girders
19.6 Foundations <\/td>\n<\/tr>\n
438<\/td>\nFigure 48 \u2014 Base detail on slopes <\/td>\n<\/tr>\n
439<\/td>\n19.7 Additional considerations affecting certain design solutions <\/td>\n<\/tr>\n
440<\/td>\nFigure 49 \u2014 Suggested bracing arrangement for falsework erected on beams or girders <\/td>\n<\/tr>\n
442<\/td>\nFigure 50 \u2014 Maximum deviation of load path <\/td>\n<\/tr>\n
443<\/td>\n20 Work on site
20.1 Introduction
20.2 Specific design instructions
20.3 General workmanship <\/td>\n<\/tr>\n
446<\/td>\nFigure 51 \u2014 Points of measurement of tolerances for purposely fabricated steelwork <\/td>\n<\/tr>\n
447<\/td>\nFigure 52 \u2014 Skew lapping of primary beams to minimize eccentricity of load <\/td>\n<\/tr>\n
448<\/td>\n20.4 Checking falsework <\/td>\n<\/tr>\n
450<\/td>\n20.5 Application of loads to falsework
20.6 Dismantling <\/td>\n<\/tr>\n
451<\/td>\n20.7 Maintenance, inspection and identification of materials <\/td>\n<\/tr>\n
452<\/td>\nAnnex A (normative)\u2002 Permissible stresses and modulus of elasticity for steel grades generally used in falsework <\/td>\n<\/tr>\n
453<\/td>\nFigure A.1 \u2014 I beam dimensions <\/td>\n<\/tr>\n
454<\/td>\nTable A.1 \u2014 Permissible bending stress in compressive members, pbc, for beams <\/td>\n<\/tr>\n
455<\/td>\nTable A.2 \u2014 Permissible axial compressive stress, pc, on cross-section
Annex B (normative)\u2002 Properties of components in tube and coupler falsework <\/td>\n<\/tr>\n
458<\/td>\nTable B.1 \u2014 Section properties of scaffold tube <\/td>\n<\/tr>\n
459<\/td>\nTable B.2 \u2014 Safe axial loads in compression for Type 4 steel scaffold tubes manufactured in accordance with BS EN 39:2001 <\/td>\n<\/tr>\n
460<\/td>\nTable B.3 \u2014 Safe axial loads in compression for Type 4 steel scaffold tubes manufactured in accordance with BS 1139\u20111:1982 <\/td>\n<\/tr>\n
461<\/td>\nTable B.4 \u2014 Safe working loads for individual couplers and fittings
Annex C (normative)\u2002 Initial testing, quality control and inspection of falsework equipment <\/td>\n<\/tr>\n
463<\/td>\nAnnex D (normative)\u2002 Data on material properties
Table D.1 \u2014 Modulus of elasticity for concrete <\/td>\n<\/tr>\n
464<\/td>\nTable D.2 \u2014 Density of reinforced concrete
Table D.3 \u2014 Density ranges for lightweight concretes <\/td>\n<\/tr>\n
465<\/td>\nTable D.4 \u2014 Masses of scaffolding material
Table D.5 \u2014 Masses and densities of men and materials
Table D.6 \u2014 Masses of corrugated steel sheeting <\/td>\n<\/tr>\n
466<\/td>\nAnnex E (normative)\u2002 Wave forces <\/td>\n<\/tr>\n
468<\/td>\nFigure E.1 \u2014 Non-breaking waves \u2013 Section diagrams
Annex F (normative)\u2002 Site investigations for foundations for falseworks <\/td>\n<\/tr>\n
470<\/td>\nAnnex G (informative)\u2002 Examples of design brief contents <\/td>\n<\/tr>\n
472<\/td>\nAnnex H (informative)\u2002 Forces from concrete on sloping soffits
Figure H.1 \u2014 Distribution of forces on sloping soffits \u2013 Level surface, sloping base <\/td>\n<\/tr>\n
473<\/td>\nFigure H.2 \u2014 Distribution of forces on sloping soffits \u2013 Sloping surface and sloping base
Figure H.3 \u2014 Distribution of forces on sloping soffits \u2013 All surfaces sloping and with top formwork <\/td>\n<\/tr>\n
474<\/td>\nFigure H.4 \u2014 Freestanding falsework <\/td>\n<\/tr>\n
475<\/td>\nFigure H.5 \u2014 Formwork connected to an existing structure
Figure H.6 \u2014 Arch falsework
Annex I (informative)\u2002 Blank <\/td>\n<\/tr>\n
476<\/td>\nAnnex J (normative)\u2002 Design of steel beams at points of reaction or concentrated loads <\/td>\n<\/tr>\n
478<\/td>\nTable J.1 \u2014 Effective lengths and slenderness ratios of an unstiffened web acting as a column <\/td>\n<\/tr>\n
479<\/td>\nFigure J.1 \u2014 Stress dispersion \u2013 Buckling <\/td>\n<\/tr>\n
480<\/td>\nFigure J.2 \u2014 Stress dispersion \u2013 Bearing <\/td>\n<\/tr>\n
482<\/td>\nTable J.2 \u2014 Effective lengths of load bearings
Annex K (normative)\u2002 Effective lengths of steel members in compression <\/td>\n<\/tr>\n
483<\/td>\nFigure K.1 \u2014 Positional restraint of steel members in axial compression <\/td>\n<\/tr>\n
484<\/td>\nTable K.1 \u2014 Effective lengths of struts <\/td>\n<\/tr>\n
485<\/td>\nTable K.2 \u2014 Effective lengths for beams without intermediate lateral restraint <\/td>\n<\/tr>\n
487<\/td>\nTable K.3 \u2014 Effective lengths for cantilever beams without intermediate lateral restraint <\/td>\n<\/tr>\n
488<\/td>\nFigure K.2 \u2014 Girder restraint (1) \u2013 Plan view <\/td>\n<\/tr>\n
489<\/td>\nFigure K.3 \u2014 Girder restraint (2) \u2013 Plan view
Annex L (informative)\u2002 Wind calculations for falsework <\/td>\n<\/tr>\n
490<\/td>\nTable L.1 \u2014 Source of the basic wind equations <\/td>\n<\/tr>\n
492<\/td>\nTable L.2 \u2014 Values of direction factor, cdir <\/td>\n<\/tr>\n
497<\/td>\nTable L.3 \u2014 Combined roughness factor, cr(z)cr,T <\/td>\n<\/tr>\n
498<\/td>\nTable L.4 \u2014 Turbulence intensity, Iv(z)flat <\/td>\n<\/tr>\n
499<\/td>\nFigure L.1 \u2014 Orography factor, co <\/td>\n<\/tr>\n
503<\/td>\nAnnex M (normative)\u2002 Shielding factor \u03b7 for unclad falsework
Table M.1 \u2014 Shielding factor, \u03b7 <\/td>\n<\/tr>\n
505<\/td>\nBibliography <\/td>\n<\/tr>\n
509<\/td>\nIndex <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Tracked Changes. Code of practice for temporary works procedures and the permissible stress design of falsework<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2019<\/td>\n525<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":216584,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2641],"product_tag":[],"class_list":{"0":"post-216581","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-bsi","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/216581","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/216584"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=216581"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=216581"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=216581"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}