Padstones

[Wolverhampton123]

Hi guys, just a little confused my drawing states that 215 width padstones are required, but the two steels bolted together are 270 wide, see attached so confusing. Surely the padstone with would be the same has rsj?

 

[Wolverhampton123]

More detailed

 

[tony1851]

Assume the wall is a 225mm thick solid brick wall?

If so, it's a poor design; the beam flanges will indeed overlap the wall. There's nothing inherently wrong with that because they will still bear on the padstone (the load is regarded as transmitted down through the webs, which will both be within the width of the padstone).

But it's clumsy. A neater solution would have been to use one beam - a 203 x 203 x 46,which would have been more than adequate and would have sat comfortably on the padstones with no overlap.

The figures for the padstone are unnecessarily detailed for the loads involved, and just serve to impress clients; they can be done just as quickly and efficiently by hand, and without all the superfluous, pointless guff. Incidentally, the padstone size shown on the main drawing differs from the padstone size stated in the calcs?

 

[Wolverhampton123]

My point Tony, and thanks for the reply, the two rsj's bolted together are 270mm, which to be honest is the cavity wall thickness, the rsj is fine. The padstone calculation seems way out..

 

[Wolverhampton123]

If I'm reading correctly padstone according to plans is 175mm rsj 270mm

 

[tony1851]

I think the design shows the padstone 215mm wide x 215mm long x 175 (or 150 high).

 

[^woody^]

Just buy a bigger one.

 

[Wolverhampton123]

I understand you can't cut padstones down, but finding the correct size is a nightmare, I will need the padstone to sit on external and internal brick work 280mm wide, the rsj is 270mm wide..(No cold bridging internal)

Any suggestion of of a suitible padstone size emailed and called guy who done calcs no reply.. Iv included a few images...

I had a builder in previous to install the rsj, but he said to add the padstones later when kitchen out and wall ready to come down.

 

[^woody^]

Use blue bricks or concrete lintels

 

[Wolverhampton123]

Thanks woody, just spoke to a mate he said there builders used Rd curbs and cut down no problem with building control? I'm always over thinking things my trouble..

 

[mikeey84]

I understand you can't cut padstones down

I've had padstones cut down before?!

 

[tony1851]

As above, you can cut padstones down with a disc cutter.

Some builders cut down pre-cast reinforced concrete lintels to whatever length they need.
Not seen kerb stones used - they are usully chamfered, which might cause an issue?

Just get a short length of 215 x 100 concrete lintel from the buider's merchants (sometimes they sell off damaged lengths cheap), and cut it to the width of the wall. These have the advantage that they have reinforcing wires.

 

[Wolverhampton123]

Thanks Tony made it all straight forward now mate, much appreciated