BS 1186-3:1990
Current
The latest, up-to-date edition.
Timber for and workmanship in joinery Specification for wood trim and its fixing
Hardcopy , PDF
English
31-08-1990
Committees responsible
Foreword
Section 1. General
1.0 Introduction
1.1 Scope
1.2 Definitions
Section 2. Selection of timber species
2.1 Species of timber for end uses
Section 3. Moisture content
3.1 Moisture content
3.2 Measurement of moisture content
Section 4. Quality of timber prior to the wood trim
being fixed
4.1 Classification
4.2 Knots and knot clusters
4.3 Splits, shakes and checks
4.4 Limits of resin pockets
4.5 Limits of sapwood
4.6 Limits of wane
4.7 Limits on rate of growth of softwood
4.8 Limit on slope of grain
4.9 Limits of exposed pith
4.10 Limits of decay and insect attack
4.11 Laminating and edge jointing
4.12 Finger jointing
4.13 Surface quality
Section 5. Fixing wood trim
5.1 General
5.2 End trimming
5.3 Nailing
5.4 Fixing by screws
Appendices
A Recommendations for specifying timber for wood
trim
B Some species of softwood and their suitability for
use as wood trim
C Some species of hardwood and their suitability for
use as wood trim
D Recommendations for maintaining the moisture
content of wood trim
E Typical profiles
F Making good at the time of decoration
Tables
1 Requirements for wood based panel products
2 Moisture content limits of solid timber
3 Some species of softwood and their suitability for
use as wood trim
4 Some species of hardwood and their suitability for
use as wood trim
Figures
1 Limits of knots and knot clusters for exposed
surfaces of wood trim
2 Round knot
3 Oval knot
4 Arris knot
5 Splay knot
6 Margin knot
7 Branched knot
8 Knot cluster
9 Examples of the method of measuring the relevant
dimension of exposed surfaces of wood trim
10 Measurement of rate of growth
11 Cladding
12 Rounded trim
13 Chamfered trim
14 Bevelled trim
15 Half rounded trim
16 Miscellaneous trim
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