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BS 8000-8:2023 2024

BS 8000-8:2023 2024

$215.11

Workmanship on construction sites – Design and installation of dry lining systems. Code of practice

Published By Publication Date Number of Pages
BSI 2024 76
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PDF Catalog

PDF Pages PDF Title
5 Foreword
7 1 Scope
2 Normative references
8 3 Terms and definitions
11 4 General statement on accuracy
12 5 Competency
6 Materials and handling preparation
6.1 General
6.2 Receipt
6.3 Storage
13 Figure 1 — Plasterboard stacked on bearers
6.4 Sorting
6.5 Preparation of work, materials and components
6.5.1 General
6.5.2 Contractual requirements
14 6.5.3 Working conditions
6.5.4 Distributed components and materials
6.5.5 Environmental considerations and sustainability
6.6 Checking and handling of materials and components
6.6.1 Checking
15 6.6.2 Distribution of plasterboards on site
7 Design
7.1 Fundamentals of design
7.1.1 Selection of a dry lining system
16 7.1.2 Health and safety
7.1.2.1 General
7.1.2.2 Plasterboard handling
7.1.3 Design development
7.1.3.1 General
7.1.3.2 Demonstration of system performance
17 7.1.4 Use of Building Information Modelling (BIM)
7.2 Types of dry lining systems
7.2.1 General
7.2.2 Partitions
7.2.2.1 Single frame
7.2.2.2 Twin frame
7.2.2.3 Curved partitions
7.2.2.4 Staggered stud system
18 7.2.2.5 Shaft wall
7.2.3 Linings
7.2.3.1 Directly bonded dry lining to solid backgrounds
7.2.3.2 Metal furring systems
7.2.3.3 Background supported lining system
19 7.2.3.4 Independent lining system
7.2.4 Framed encasement for structural steel fire protection
7.2.5 Encasements to structural beams/columns
7.3 Types of ceilings
7.3.1 Direct applied
20 7.3.2 Suspended
7.4 Performance of dry lining systems
7.4.1 General
21 7.4.2 Fire resistance of partitions, wall linings and ceilings
7.4.3 Fire protection of structural elements
7.4.4 Reaction to fire
22 7.4.5 Partition and independent lining system height
7.4.6 Ability to accommodate movement
7.4.6.1 General
7.4.6.2 Provision of movement joints
7.4.6.3 Vertical movement
23 Figure 2 — Typical head details of partitions to accommodate vertical deflection of the structural element
24 7.4.6.4 Lateral movement
7.4.6.5 Differential movement
7.4.7 Airborne sound insulation
7.4.8 Sound absorption
7.4.9 Robustness
25 7.4.10 Thermal performance
7.4.10.1 Dry lining elements in external walls
7.4.10.2 Internal walls
7.4.11 Moisture resistance
26 7.4.12 Vapour resistance
7.4.13 Air permeability
7.4.14 Security
7.5 Deviations and tolerances
27 7.5.1 General
7.5.2 Factors which affect tolerance
7.5.2.1 Defining tolerances
28 Figure 3 — Impact on tolerance created by overlapping metal framing
7.5.2.2 Tighter tolerances
29 7.5.3 Measurement methods
7.5.4 Straight edge alignment
7.5.5 Background
32 7.5.7 Finished plasterboard surfaces of partitions and independent linings
Figure 4 — Deviation band
33 7.5.8 Localized build-up of the surface for tape and joint finish
7.5.8.1 Crown of joint
Figure 5 — Permissible deviations on jointing and 90° corners
34 7.5.8.2 External angles
7.5.8.3 Internal angles
Figure 6 — Straight edge for measuring deviations at external and internal angles
7.5.8.4 Boxed studs
7.5.8.5 Around openings (door heads, access panels and backing plates)
7.5.9 Thickness of partitions
7.5.10 Prepared openings in partitions
35 7.5.11 Ceilings and bulkheads
7.5.11.1 MF suspended ceilings
7.5.11.2 Bulkheads
Figure 7  — Measuring the internal corner
36 7.5.12 Casings
7.5.12.1 General
7.5.12.2 Two-sided vertical casings
7.5.12.3 Three-sided casings
37 Figure 8 — Casing detail showing tolerances for external corners of horizontal casings
7.5.13 Accuracy of reveals
Figure 9 — Methods of measuring internal and external corners of column casings
38 7.6 Provisions for services
7.6.1 General
7.6.2 Design to accommodate services within dry lining
7.6.2.1 Where plasterboard is being applied to a solid background using gypsum-based adhesive dabs
7.6.2.2 Accommodating services within the voids of partitions and wall linings
7.6.3 Service support
7.6.4 Design of service penetrations
7.7 Wall tiling
7.7.1 General recommendations and tile size
39 7.7.2 Ceramic and porcelain
7.7.3 Natural stone
40 7.7.4 Glass splashbacks and PVC panelling
7.8 Finishes
7.8.1 General
7.8.2 Type of finish and effect of tolerance
7.8.3 Gypsum plaster skim coat finish to plasterboard
7.8.4 Plasterboard jointing
41 7.9 Environmental conditions
7.10 Thermal insulation
7.10.1 General
7.10.2 Moisture control and air tightness
42 Figure 10 — Service zone to external wall with AVCL and plasterboard linings
7.11 Materials
7.11.1 Plasterboard types
43 7.11.2 Framing types
7.11.3 Metal stud types
44 Table 1 — Metal stud types
7.11.4 Fixing types
45 7.11.5 Jointing and finish materials
7.11.5.1 Jointing compounds
7.11.5.2 Gypsum plaster
7.11.5.3 Ready mixed plaster
7.11.6 Ancillary frameworks (access hatches)
7.11.6.1 General
7.11.6.2 Insulation
7.11.6.3 Sealants
46 8 Installation
8.1 General
8.1.1 Tolerances
8.1.2 Cleanliness and protection
8.2 Background
47 Figure 11 — Suggested adhesive dab fixing pattern for gypsum plasterboard and insulated composite plasterboard
48 Figure 12 — Plasterboard adhesive layout
49 8.3 Timber backgrounds
Figure 13 — Plasterboard fixing positions
Table 2 — Spacing of timber supports in walls and partitions
50 Figure 14 — Joints over timber supports in partitions and linings
Figure 15 — Joints over timber supports in ceilings: fastening near cut ends of boards
51 8.4 Steel
Figure 16 — Edge fixing dimensions for plasterboard edges
53 Table 3 — Minimum screw lengths for metal and steel supports
8.5 Continuity and consistency of workflow
8.6 Use of plant and equipment (including certain power tools)
54 8.7 Accuracy
8.8 Planning and coordination with other trades
8.9 Provision for services (gas)
8.10 Safety issues
8.11 Work on site
8.11.1 Cutting and installation of plasterboards
8.11.1.1 Cutting
55 8.11.1.2 Installation
Figure 17 — Setting out plasterboard external angles and abutments
Figure 18 — Setting out plasterboard intermediate joints on studs
8.11.1.3 Application of plasterboards to form partitions and linings
56 8.11.1.4 Fastenings
8.11.2 Fixing to solid backgrounds
8.11.2.1 General
8.11.2.2 Fixing with gypsum-based adhesives to vertical surfaces
57 Table 4 — Fixing of plasterboard and insulated composite plasterboard with gypsum-based adhesives
Figure 19 — Wall lining to ceiling junction
8.11.2.3 Fixing insulated composite plasterboard with gypsum-based adhesives to vertical surfaces
58 8.11.3 Installation and fixing to timber framing
8.11.3.1 Ceilings and partitions/linings
8.11.3.2 Timber stud partitions
Table 5 — Spacing of timber studs forming partitions
59 8.11.3.3 Timber furring battens
8.11.3.4 Independent wall linings
8.11.3.5 Internal ceiling linings
Table 6 — Spacing of timber supports in ceilings
8.11.4 Installation of metal framing
8.11.4.1 General
60 8.11.4.2 Steel stud partitions
Figure 20 — Typical steel stud partitions
61 8.11.4.3 Single layer boarding
Figure 21 — Direction of plasterboarding
8.11.4.4 Multi-layer boarding
8.11.5 Internal wall linings
8.11.5.1 General
62 8.11.5.2 Directly bonded dry lining to solid backgrounds
Table 7 — Plasterboard adhesive centres per plasterboard thickness and size
8.11.5.3 Metal furring channels
63 8.11.5.4 Independent lining system
8.11.6 Internal ceiling linings
8.11.6.1 Direct applied
8.11.6.2 Semi-direct applied
8.11.6.3 Fixed direct to the structure
64 8.11.6.4 Suspended beneath the structure
8.11.6.5 Installation of plasterboards to framed encasement system
8.11.6.6 Installation of movement joints
8.11.7 Jointing
8.11.7.1 General
65 8.11.7.2 Preparation
8.11.7.3 Tapered edge plasterboard joints
8.11.7.4 Internal angles
8.11.7.5 Cut edge plasterboard joints
66 8.11.7.6 External angles
8.11.7.7 Dry lining edging bead
8.11.7.8 Machine application
8.11.7.9 Surface preparation
8.11.8 Decoration
8.11.8.1 General
67 8.11.8.2 Decorator’s preparatory work
8.11.8.3 Application of decorative textured finishes
8.11.8.4 Lighting conditions
9 Checking
9.1 In-process checks
68 9.2 Checking work
9.2.1 Completed work
9.2.2 Finishing
69 10 Handover
10.1 General
10.2 Clearing and cleaning
10.3 Heading
10.4 Quality assurance and record keeping
10.5 Handover documents
10.5.1 General
10.5.2 Operations and maintenance
70 10.5.3 Health and safety file
71 Annex A (informative)Design considerations, application and acceptance of dry lining finish
A.1 General
A.2 Specific arrangements which can affect the appearance of the finished work
A.3 Specification of flatness and smoothness
72 A.4 Task lighting during construction
A.5 Glancing light conditions
A.6 Viewing conditions
A.7 Choice of artificial lighting
74 Bibliography

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BS 8000-8:2023 2024
$215.11