BS 8204-1:1987
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Screeds, bases and in-situ floorings Code of practice for concrete bases and screeds to receive in-situ floorings
Hardcopy , PDF
11-15-1999
English
10-30-1987
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Foreword
Committees responsible
Code of practice
1. Scope
2. Definitions
3. Exchange of information and time schedule
3.1 General
3.2 Exchange of information
3.3 Time schedule
4. Materials
4.1 Cement
4.2 Aggregates
4.3 Admixtures
4.4 Reinforcement
4.5 Water
5. Design considerations
5.1 Sub-base
5.2 Base and screed construction
5.3 Base slabs
5.4 Cement and sand screeds and fine concrete screeds
5.5 Bay sizes
5.6 Joints
5.7 Use of bonding agents
5.8 Soundness of bonded and unbonded screeds
5.9 Tolerances on level and surface regularity of base
slabs and screeds
5.10 Liability to cracking of direct finished base slabs
and screeds
5.11 Damp proofing
5.12 Eliminating construction moisture
5.13 Admixtures
6. Work on site
6.1 Protection against the weather
6.2 High alumina cement concrete
6.3 Preparation of the base
6.4 Screed mix
6.5 Pumping the screed
6.6 Laying the screed
6.7 Finishing the base or screed
6.8 Curing the base or screed
6.9 Protection of the surface
7. Inspection and testing of bases and screeds
7.1 Inspection
7.2 Testing of the completed work
7.3 Levels and surface regularity
7.4 Determination of mix proportions of floating
screeds
7.5 Adhesion of bonded screeds to the base
7.6 Curling and lipping of unbonded and floating
screeds
7.7 Soundness of bonded and unbonded screeds
7.8 Soundness of floating screeds
Appendices
A. Recommended method for the assessment of levels and
surface regularity
B. Recommended method for the determination of
soundness of bonded and unbonded screeds
C. References
Tables
1. Concrete strength for base slabs
2. Classification of surface regularity of direct
finished base slab or screed
3. Choice of soundness category for screeds
4. Acceptance limits for soundness test
Figures
1. Illustration of layers in a concrete ground-
supported floor
2. Illustration of layers in a suspended concrete
floor
3. Slip gauges for checking surface regularity
4. BRE screed tester
Recommendations for installation in respect of materials, design, work on site, and inspection and testing. Appendices cover assessment of levels and surface regularity and determination of soundness.
| Committee |
B/544
|
| DevelopmentNote |
PARTIALLY REPLACES CP 204: PART 2:1970. BS DRAFT 96/105291 DC REFERS TO A NEW REVISION
|
| DocumentType |
Standard
|
| Pages |
24
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
| BS 8204-5:1994 | Screeds, bases and in-situ floorings Code of practice for mastic asphalt underlays and wearing surfaces |
| BS 8203:1996 | Code of practice for installation of resilient floor coverings |
| BS 5385-4:1992 | Wall and floor tiling Code of practice for tiling and mosaics in specific conditions |
| BS 8204-3:1993 | Screeds, bases and in-situ floorings Code of practice for polymer modified cementitious wearing surfaces |
| BS 8000-9:1989 | Workmanship on building sites Code of practice for cement/sand floor screeds and concrete floor toppings |
| BS DD230(1996) : 1996 | METHOD FOR DETERMINATION OF IN SITU CRUSHING RESISTANCE OF FLOATING LEVELLING SCREEDS |
| BS 5385-3:1989 | Wall and floor tiling Code of practice for the design and installation of ceramic floor tiles and mosaics |
| BS 5442-1:1989 | Classification of adhesives for construction Classification of adhesives for use with flooring materials |
| BS 5606:1990 | Guide to accuracy in building |
| 01/122607 DC : DRAFT JULY 2001 | BS 5325 - CODE OF PRACTICE FOR INSTALLATION OF TEXTILE FLOOR COVERINGS |
| BS 8204-4:1993 | Screeds, bases and in-situ floorings Code of practice for terrazzo wearing surfaces |
| BS 5325:1996 | Code of practice for installation of textile floor coverings |
| BS 5075-3:1985 | Concrete admixtures Specification for superplasticizing admixtures |
| BS 5075-1:1982 | Concrete admixtures Specification for accelerating admixtures, retarding admixtures and water reducing admixtures |
| BS 915-2:1972 | Specification for high alumina cement Metric units |
| BS 5075-2:1982 | Concrete admixtures Specification for air-entraining admixtures |
| BS 8110-1:1985 | Structural use of concrete Code of practice for design and construction |
| BS 146-2:1973 | Specification for Portland-blastfurnace cement. Metric units |
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