BS 5628-3 PDF

BS Incorporating Corrigendum No. 1. 1 31 January See Committees responsible for this British Standard The. BS Code of practice for the use of masonry – Part 3: Materials and components, design and workmanship. amendments of BS Parts 1, 2 and 3 ‘Code of Practice for Use of Masonry’. Mortar Testing. All test cubes shall be made and tested in accordance with.

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Usually minor arches of segmental, parabolic or semi-circular form up to about 2 m span can be proportioned empirically, provided care is taken to ensure that there is an adequate amount of masonry over the arch ring and between it and any line of floor loads. However, when designing walls, the origin is generally assumed to be airborne sound rather than impact sound. Calcium silicate bricks can suffer deterioration if they are impregnated with strong salt solution and then subjected to intense freezing.

Lay hollow blocks on shell bedding with the vertical joints filled. All materials expand and contract in response to thermal changes. It is important to weight the covers to prevent the wind lifting them.

BS 5628 Part 3 Masonry

Specification for extruded boards. BSLoading for buildings — Part 1: Closer spacing may be necessary for walls which are less well restrained, e. Few natural stones bz not give adequate service between eaves and DPC in buildings of domestic ns.

Where movement joints or edge 5268-3 are required for walls designed to resist fire, they should be filled with a non-combustible material, such as mineral fibre, which still allows the movement joint to function.

If there is any danger of the work being frozen then consideration should be given to the use of insulation under the covers. Normally in brick masonry, open cross joints perpend joints or, in block masonry, part open cross joints perpend joints serve as weepholes. DPC stepped to suit finished ground level Figure A. When a wall is to be built to a batter or slope, the 562-83 should be erected at the desired angle from the vertical, and measurements taken as before.


Arrange deliveries so that the materials do not arrive at site too early and that excessively large quantities are not delivered at one time. The design should contain provision regarding the effect on the stability of the masonry where heavy fittings are to be fixed to a wall. This movement will be in opposition to thermal expansion of the cladding.

Insulation materials are produced in different forms to suit the various installation methods used see Table 8 and A. Adequate overhangs and drips or the provision of drainage to take water away from the masonry will reduce the degree of wetting.

L-shaped copings and clip-over copings can be more satisfactory in some situations. Water run-off from limestone and magnesian limestone can attack sandstone, some granites and some bricks. It is not intended that the voids in perforated bricks are filled with mortar.

Calcium silicate and concrete masonry do not contain soluble sulfates.

In particular check that: They should extend about two-thirds into the wall; headers extending through the full thickness of the wall are not recommended as they tend to permit damp-penetration. The user is referred to the particular recommendations of any technical approval in this case.

Materials and components, design and workmanship. As such [6] can restrict the choice of construction. Cavity tray overlaps in front of the vertical DPC. Movement joints in masonry walls are generally deep in relation to their width. For the selection of a sealant for use with a particular type of natural stone, the sealant manufacturer should be consulted to avoid problems such as migration staining.

BS Part 3 Masonry – Free Download PDF

Moisten the faces of the stones adjacent to beds and joints prior to final pointing. Alternatively, they should be suitably reinforced see Annex B and 5. The design should take into account the choice of masonry units and mortar in the following and similar situations where masonry is likely to become and can remain substantially wet for long periods of time. They should not be regarded as defining acceptability of appearance.


BSWorkmanship on building sites — Part Specification for prefabricated lintels. NOTE Recommendations about the use of natural stone panels as cladding to structural masonry and steel and concrete frames are given in BS Hand-mix mortar on a clean watertight platform. If the frame is to be fixed later, the DPC should be left with a suitable projection to facilitate this.

Special corner units are supplied by some manufacturers.

Cover with a tarpaulin or a polyethylene sheet so that all the bags are protected from wind and rain. Some have, however, been ratified by CEN.

BS 5628-3:2005

Where required continuous support should be provided to avoid excessive sagging and deformation. Returns of mm or more should be regarded as having sufficient inherent flexibility to accommodate the stress caused by the opposing forces see Figure It should be noted that the DPC or cavity tray impairs the structural ba of the parapet and the wall beneath it, and of the coping and the parapet.

Suspended timber floors at other levels should be built into the walls or supported by offsets, corbels or joist hangers. Ties should be evenly distributed over the wall area, except around openings, and preferably should be staggered. BS for calcium silicate units and BS for precast concrete masonry units, give tolerances for each individual dimension. Code of practice for sealing joints in buildings using sealants. To match existing thicker walls, or for decorative purposes, bond patterns incorporating headers may be 562-3 for half brick leaves, but they will require the use of half-bricks, or bats, as the headers.