Steel Beam Supporting Cavity Wall Detail

Cavity walls consist of 2 skins of masonry separated by a gap cavity.

Steel beam supporting cavity wall detail.

If you install one large steel that picks up a double skin wall you should also install a cavity tray above it. Plan area of bonded masonry supporting steel beam to be greater than or equal to 0 1m. 1 end of beam built into masonry wall. Walls that face driven rain are particularly vulnerable to water penetration.

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. M16 bolts fix the beam back to the side plates. The steel beam is hung from the rolled steel angle rsa with a side plate welded onto it. Openings in cavity walls.

This is important because the bricks need to be tied back cross bonded into the inner leaf of gable end cavity wall. Steel beam end bearings to be located on substantial load bearing masonry walls or piers. 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. 3 end of beam fixed to a column or a beam.

Essentially your large steel prevents the natural gravitational passage of water. Supporting masonry to comply with eurocode 6 or bs 5628. 6 if steel beam to steel beam connections are required use appendix 6 5 c. Figure 1 effective areas supported by steel beams.

The designer is to ensure that the proposed detail adequately ensures that the end of the beam is laterally restrained. 2 end of beam fixed to a masonry wall. Table 4 size of steel beam supporting floor. Note that the wind post is formed from remains of the existing load bearing wall.

The spacers are at a minimum of 750crs along the length of the beam including close to the support. Ends of beams can be laterally restrained using one of the following methods. 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. Cavity walls are common in houses built from the 1920 s onwards typically when making an opening in a cavity wall two steel beams are used with separate steel beams supporting the inner and outer leaves.

T able of c ontents c hapter 1 m asonry c avity w all d etails s hear c onnected c hapter 2 m asonry c avity w all d etails a djustable t ies c hapter 3 b rick v eneered s teed s tud b ackup w all d etails s hear c onnected c hapter 4 b rick v eneered s teel s tud b ackup w all d etails s lotted t ies c hapter 5 s ingle w ythe l oadbearing m asonry w all d etails c hapter 6 m. Some of the beams were supporting existing timber floors.