Steel Beam Supporting Cavity Wall Detail

Figure 1 effective areas supported by steel beams.

Steel beam supporting cavity wall detail.

Note that the wind post is formed from remains of the existing load bearing wall. 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. The spacers are at a minimum of 750crs along the length of the beam including close to the support. This is important because the bricks need to be tied back cross bonded into the inner leaf of gable end cavity wall.

Walls that face driven rain are particularly vulnerable to water penetration. 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. Plan area of bonded masonry supporting steel beam to be greater than or equal to 0 1m. Some of the beams were supporting existing timber floors.

Supporting masonry to comply with eurocode 6 or bs 5628. Steel beam end bearings to be located on substantial load bearing masonry walls or piers. 2 end of beam fixed to a masonry wall. If you install one large steel that picks up a double skin wall you should also install a cavity tray above it.

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. Steel beam calculations accepted by building control. Essentially your large steel prevents the natural gravitational passage of water.

1 end of beam built into masonry wall. 6 if steel beam to steel beam connections are required use appendix 6 5 c. Openings in cavity walls. The steel beam is hung from the rolled steel angle rsa with a side plate welded onto it.

The designer is to ensure that the proposed detail adequately ensures that the end of the beam is laterally restrained. In these cases they were packed with oak timbers struts to spread the floor loads correctly across the rsj steel beams. The minimum end bearing length at supports to be 100mm. Table 4 size of steel beam supporting floor.

Ends of beams can be laterally restrained using one of the following methods. 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.