Spectra
Transmittance
Focusing
Spectacle lenses
Spherical shape
Prisms (optical)
Ophthalmology
Weighting functions
Blanks
Optics
Statistical distribution
Semi-finished products
Reflection factor
Shape
Wave properties and phenomena
Surfaces
Vocabulary
Link: BS EN ISO 13666:2019 Ophthalmic optics. Spectacle lenses. Vocabulary
Source: BSI Standards
Foundry engineering
Proof stress
Test specimens
Testing conditions
Tensile strength
Ferrous alloys
Hardness
Cast-iron
Castings
Strength of materials
Blackheart malleable cast-iron
Tensile testing
Ductility
Classification systems
Designations
Whiteheart malleable cast-iron
Elongation
Malleable cast-iron
Link: BS EN 1562:2019 Founding. Malleable cast irons
Source: BSI Standards
Waterproof materials
Tensile strength
Occupational safety
Performance
Performance testing
Dimensional changes
Protective clothing
Water-vapour tests
Chemical-resistance tests
Rainfall
Climatic protection
Weather resistance
Grades (quality)
Water-resistance tests
Link: BS EN 343:2019 Protective clothing. Protection against rain
Source: BSI Standards
Link: ISO 18091:2019 Quality management systems. Guidelines for the application of ISO 9001 in local government
Source: BSI Standards
Roads
Joints
Cold tests
Environmental testing
Accelerated testing
Sealing materials
Road surfacing
Pavements (roads)
Concretes
Cold-working
Link: BS EN 14187-9:2019 Cold applied joint sealants. Test methods Function testing of joint sealants
Source: BSI Standards
Link: ISO 2772:2019 Test conditions for box type vertical drilling machines. Testing of the accuracy
Source: BSI Standards
Water
Drinking water
Analysis
Water treatment
Coagulants
Link: BS EN 17215:2019 Chemicals used for treatment of water intended for human consumption. Iron-based coagulants. Analytical methods
Source: BSI Standards
Dimensional tolerances
Steels
Railway fixed equipment
Grooves
Hardness
Rails
Dimensions
Surface defects
Approval testing
Laboratory testing
Railway rails
Railway track
Mass
Unalloyed steels
Link: BS EN 14811:2019 Railway applications. Track. Special purpose rail. Grooved rails and associated construction profiles
Source: BSI Standards
Verification
Design
Bogies
Strength of materials
Testing
Locomotives
Structural design
Railway equipment
Railway wagons
Railway vehicle components
Railway coaches
Vehicle bodywork
Loading
Stress
Railway vehicles
Link: BS EN 16860:2019 Railway applications. Requirements and general principles for securing payload in rail freight transport
Source: BSI Standards
