BS 5628 PART 3 PDF

Based on standard fire test data extending over 50 years (Davey & Ashton ), Table 15 of BS provides the fire resistance of walls for various forms of. Find the most up-to-date version of BS at Engineering BS Code of practice for the use of masonry – Part 3: Materials and components, design and workmanship.

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6.1 External masonry walls

Requirements for the design strength of bricks are given in BS Sulfate-resisting ppart will be required in the mortar. Simplified calculation methods for unreinforced masonry structures incorporating corrigendum October In saturated conditions, sulfate-resisting cement mortar is required for S1 designation bricks. Where no standard exists, Technical Requirement R3 applies see Chapter 1.

Design Materials Sitework Appendices Index. Battens should be of the size specified in the design and pre-treated with preservative treatments. For recommended mortar mixes, see Appendix 6. Timber should be a naturally durable species or pre-treated with preservative. Calcium silicate bricks do not contain significant amounts of soluble sulfates and may be suitable where sulfate bearing soil and ground water conditions exist.

Design considerations, selection of materials and execution of masonry incorporating corrigendum September All retro-fill insulation materials UF foam, blown mineral fibre and expanded polystyrene beads should be installed by installers trained by the assessment holder and approved jointly by the assessment holder and the assessing organisation. Alternative concrete blocks should not be used without the designer’s ;art. Other factors may dictate the strength of blocks required in certain circumstances, eg sulfate-resistance may require blocks of greater strength.

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Sulfates may attack the cement used in the block. Sulfate-resisting Portland cement should be to BS Materials and components, design and workmanship.

BS 5628-3:2005

Reference should be made to Design clause 6. Again there may be more recent versions of the document. Sand for render should be sharp sand to BS ENpreferably from the coarse end of the grading scale. The Amber 55628 status indicator indicates that some caution is needed when using this document – it is either: Simplified calculation methods for unreinforced masonry structures. Sand with excessive fine material will shrink and crack.

B blocks should not be used below dpc where there are sulfates in the ground, unless suitability is confirmed by the block manufacturer. Normally, other lintels should be long enough to have a minimum mm end bearing each side of the opening. General rules – Structural fire design.

Design Approaches: Prescriptive Design Methods: Masonry Structures: BS

Lintels shall be of the type and dimensions appropriate to their position within the structure. In concrete blockwork, prat construction joint may be a simple vertical joint filled with mortar and sealed. Materials for external masonry walls shall comply with all relevant standards, including those listed below.

Want access to British Standards? For three storey dwellings or dwellings with storey heights over 2.

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The proportions will depend on the level of sulfates in the ground. Bricks used internally or fully protected may be unsuitable in external situations. Pxrt design may show that strengths lower than 7.

It is advisable to know where they come from, both geographically and within the previous building. Where partial cavity insulation is used, it should be held in place by retaining devices which may be clipped to the wall ties.

NHBC Standards

Materials and components, design and workmanship incorporating Corrigendum No. In Northern Ireland, stainless steel or non-ferrous ties should be used where the cavity is fully filled with insulation and 75mm wide or more.

Materials and components, design and workmanship No longer current but cited in Building Regulations. Design of masonry structures. In Scotland, galvanised ties may be used.

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General rules – Structural fire design incorporating corrigendum October