Steel Beam Supporting Cavity Wall Detail

Openings in cavity walls.

Steel beam supporting cavity wall detail.

Essentially your large steel prevents the natural gravitational passage of water. Some of the beams were supporting existing timber floors. 6 if steel beam to steel beam connections are required use appendix 6 5 c. The steel beam is hung from the rolled steel angle rsa with a side plate welded onto it.

Steel beam calculations accepted by building control. M16 bolts fix the beam back to the side plates. Table 4 size of steel beam supporting floor. This is important because the bricks need to be tied back cross bonded into the inner leaf of gable end cavity wall.

Supporting masonry to comply with eurocode 6 or bs 5628. The spacers are at a minimum of 750crs along the length of the beam including close to the support. 1 end of beam built into masonry wall. Plan area of bonded masonry supporting steel beam to be greater than or equal to 0 1m.

3 end of beam fixed to a column or a beam. Figure 1 effective areas supported by steel beams. Note that the wind post is formed from remains of the existing load bearing wall. Walls that face driven rain are particularly vulnerable to water penetration.

Cavity walls consist of 2 skins of masonry separated by a gap cavity. Ends of beams can be laterally restrained using one of the following methods. Steel beam end bearings to be located on substantial load bearing masonry walls or piers. Above the rsj steel beam we dry pack the small gaps up to the first floor support with a semi dry strong 2 1 cement mixture this is compacted into the gaps between the beam and the first floors.

The designer is to ensure that the proposed detail adequately ensures that the end of the beam is laterally restrained. I regularly specify double pfc s for existing new cavity walls but i always specify steel spacers formed with angle one side of which is welded to 1 pfc and the other side is bolted to the other with a minimum of 2 no m16 bolts. 2 end of beam fixed to a masonry wall. If any area shown as void contains a staircase add 2m 2 to the effective area supported by any beam which supports partially or fully that staircase.

The minimum end bearing length at supports to be 100mm. If you install one large steel that picks up a double skin wall you should also install a cavity tray above it.