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As per my SE A minimum of 100mm bearing should be given to the beams at both ends. The beams can bear onto the existing (sound) masonry walls, be they block or brick. If you wish to provide padstones, all well and good.

Thanks Bit the bullet. Neighbours & the wife still happy

SE drawings do not identify this factor. Design member bearing length -100mm. Allowable padstone stress = 1.4MPa 3.6 N Blockwork

I need to fit 2 RSJ spanning a gap of 4.44 m. RSJ length calculated at 4.64 m. This allows 100mm to bear onto the brickwork. The problem I have is that the two supporting walls are double skin without cavities. This leaves now additional gap to allow the RSJ to fit. Next door will not be...

Thanks for all the replies. 6 yard skip now on hire for £135 all in.

Just demolish 4m cavity wall, and removed all the plaster from the walls. Room size 4m x 4.5m. What size skip would be best suited, for the discarded materials? Thanks

Thanks for the reply. Unfortunately I won't be able to achieve the same height on the external coarse beam. Do you think it will be best to relay the missing two coarses on top of the beam?

http://media.diynot.com/17000_16097_37958_37873928_thumb.jpg http://media.diynot.com/17000_16097_37959_98388389_thumb.jpg http://media.diynot.com/17000_16097_38665_98894573_thumb.jpg http://media.diynot.com/17000_16097_38666_25172692_thumb.jpg 25172692 shows the exposed wall plate [/img]

Just taken away a supporting wall. Acro's now in place. Unfortunately I have dislodged the two coarses of bricks, which are supposed to be between the proposed steels & the wooden wall plates. There are two steels to be fitted. One on the supporting coarse & the other one on the outside...

Just taken the wall away. Unfortunately I have dislodged the two coarses of bricks, which are supposed to be between the proposed steels & wall plates. There are two steels to be fitted. One on the supporting coarse & the other one on the outside coarse, for a future planned extention flat...

http://media.diynot.com/17000_16097_37958_37873928_thumb.jpg http://media.diynot.com/17000_16097_37959_98388389_thumb.jpg[/img]

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