In order to read a secure pdf, you will need to install the fileopen plugin on your computer. Specification for precast concrete masonry units published by bsi on july 31, 1981 specifies materials, tolerances and minimum performance levels for precast concrete masonry units blocks and bricks. Amd 3944 published 15 march 1982, amd 4462 published 29 february 1984, amd 14523 published 29 august 2003 supersedes drafts. Dec 03, 2003 british standard bsi summary and reference.
Method for specifying precast concrete masonry units. Complete document precast concrete masonry units part 1. Bsi bs 60731 precast concrete masonry units part 1. Descriptors, construction systems parts, blocks building, dimensional. Determination of thermal characteristics of standard and.
The blocks are wirecut to the required dimensions and are cured in high pressure steam autoclaves to increase their physical and chemical stability. Products classified as noncombustible under bs 476. Specification for hotrolled sections incorporating amendment no. Provides a method for specifying precast concrete masonry units complying with the requirements of bs 6073. Specification for precast concrete masonry units bs 6180. Find the most uptodate version of bs 60731 at engineering360. The properties of compressed earthbased ceb masonry. Minimum density is 2100 kgm3 when tested in accordance with the method of bs 6073 2. Pdf characterisation of the compressive strength of sandcrete. Specification for precast concrete masonry units description this british standard specifies materials, tolerances and minimum performance levels for precast concrete masonry units blocks and bricks. Testing for strength the sample specimen shall be tested in compression. This british standard, having been prepared under thedirection of the cement,gypsum, aggregates and quarry products standards committee, was published under theauthority of the executiveboard and comes into effect on31 july 1981.
Specification for precast concrete masonry units ms 2282. Taking, examining and testing in compression rock cube concrete flow bs 1881105. Raw materials are checked against chemical and physical specifications and the final product is checked to bs 6073 1. Guide for specifying precast concrete masonry units.
With over 100 years of experience the british standards institute is recognised as the uks national standards body. Appendices give methods of measuring dimensions and determining strength and drying shrinkage. This part is a specification for precast concrete masonry units giving criteria for materials, minimum performance levels and maximum permissible dimensional deviations for solid, cellular or hollow units. Part 1 and part 2, though the latter material is generally used in lightweight aggregate blocks. Concrete bricks in accordance with bs 6073 part 2 precast concrete masonry units may be within any of the format ranges indicated in table 4. Arthur lyons, materials for architects and builders, fourth editionbutterworthheinemann 2010 440 pages pdf 15,8 mbmaterials for architects and builders covers the broad range of. Bs 25999 is an internationallyaccepted standard, developed by the worlds leading international. Read the following statements to determine if bs 25999 is the right choice for your organization. Tensartech tw3 wall system earth retaining structures.
Bs 6073 part 2, method for specifying precast concrete masonry units gives sizes and strengths in common use together with other useful information. Guide for specifying precast concrete masonry units from nsai. Publisher information british standards institution. Their committees work with the manufacturing and service industries, government, businesses and consumers to facilitate the production of british. To obtain the normalised strength from the declared unit strength to bs. Calcium silicate bricks in accordance with bs 187 specification for calcium silicate sand lime and flint lime bricks have the same standard format as. Normalised strength of aggregate epic concrete blocks. All bsi british standards available online in electronic and print formats. Raw materials are checked against chemical and physical specifications and the final product is checked to bs 60731. This is a pdf file of an unedited manuscript that has been accepted for. Specifies materials, tolerances and minimum performance levels for precast concrete masonry units blocks and bricks. Test sieves of metal wire cloth bs 4102 2000 test sieves technical requirements.
Test sieves of metal wire cloth bs 410 2 2000 test sieves technical requirements. Strength average compressive strength should be not less than 3 nmm2 and the lowest block from a sample of 10 blocks should not be less than 2. Bsi bs 60732 precast concrete masonry units part 2. Specification for materials, fabrication and erection. Bsi bs2573 partm2 80 w lb24bb9 o004984 2 w bs 2573. This is usually handled and transported to block plants in dry powder form in tankers and silostored at the works. Bsi bs 6073 1 precast concrete masonry units part 1. This specifies a method of test for measuring the lateral spread of flame along the surface of a specimen of a product orientated in the vertical position. Standards referenced by this book show below hide below bs 5080 2 1986. The design and use of masonry products is specified in the various parts of bs 5628. Any material of density 300kgm or more, which when tested to bs 476.
Code of practice for the use of masonry, parts 1, 2 and 3. Bsi bs 2573 partm2 80 w lb24bb9 o004984 2 w bs 2573. How bs 25999 answers these questions bs 25999 provides an organization with guidance and details necessary to build and improve its bcms. Appendix d withdrawn a routine rapid control test of compressive strength of blocks by manufacturer fibre board test documented inhouse method spr 91 a drying shrinkage of autoclaved aerated concrete bs en 680. This part of bs 6073 is a method for specifying precast concrete masonry units, intended to be read in. Document history partially superseded by bs en 772 2. Part 1 and gives the compliance procedure for the special category of manufacturing control. Schedule of accreditation united kingdom accreditation service. The test was performed in accordance with the procedure specified in bs 476. Specification for precast concrete masonry units amd 3944 amd 4462 withdrawn publication year 1981 document status. Highstrength structural bolting assemblies for licensed copy.
Use of quartet blends containing fly ash, scoria, perlitic. Highstrength structural bolting assemblies for licensed. Bs 5628 is based on traditional uk brick and block sizes but the 2005 edition gives unit strengths to bs en 77. Piawaian yang dirujuk bagi pengeluaran sijil perakuan bahan. A class 1 classification is the best of four performance levels defined.
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