Post and beam fixing

Joined
30 Apr 2009
Messages
54
Reaction score
0
Location
Wiltshire
Country
United Kingdom
I'm removing a wall and replacing with an oak post and beam. First floor, directly supporting half a dozen rafters.
Post and beam sizes checked by SE.
His advice for fixing the bottom of the post was to take down a couple of courses of brickwork (rat trap bond, internal wall that was external in the dim distant past) , install a pad stone below floor level and sit the post on that secured by angle brackets screwed to post and pad stone. Fixing nicely hidden.

Having started investigations whilst timber is ordered I find that just my luck there is the end of a floor joist (2" wide) under where the post will land on the wall so I can't just drop a pad stone down below floor board level.

I can build up around the joist with a couple of courses of engineering bricks, but what would be best to bridge over the joist that I could fix the post base to and would not be ugly to look at. Or look out of place at the bottom of an oak post.

EDIT: Post 150mm square.
 
Sponsored Links
Joined
11 Jan 2013
Messages
5,419
Reaction score
1,163
Location
Durham
Country
United Kingdom
How deep is the subfloor beneath the joist? Can you put blocks under the joist then trim the end of it out of the way of your padstone?
EDIT Oops, if your post base is at first floor level thats not going to work. Boo
 
Joined
30 Apr 2009
Messages
54
Reaction score
0
Location
Wiltshire
Country
United Kingdom
How deep is the subfloor beneath the joist? Can you put blocks under the joist then trim the end of it out of the way of your padstone?

Thanks, but it's on the first floor, so unless I build a pillar in the living room that's not an option ;)
 
Sponsored Links
Joined
30 Apr 2009
Messages
54
Reaction score
0
Location
Wiltshire
Country
United Kingdom
Just came across spreader plates. Any reason a 15mm (300x200 or so) plate sat on engineering bricks built up around the joist end could not be used?
It would be low enough profile to be at floor level.
 
Joined
30 Apr 2009
Messages
54
Reaction score
0
Location
Wiltshire
Country
United Kingdom
Not without doing extensive damage to the ceiling and wall of the room below.
 
Joined
7 Jan 2011
Messages
1,353
Reaction score
163
Location
Warwickshire
Country
United Kingdom
Any reason a 15mm (300x200 or so) plate sat on engineering bricks built up around the joist end could not be used?
It would be low enough profile to be at floor level.

I reckon that's a question for your SE, as surely the BCO will want to know the SE has signed off on it?
 
Joined
11 Jan 2013
Messages
5,419
Reaction score
1,163
Location
Durham
Country
United Kingdom
I think your spreader plate would be fine but def run it past your SE first. He may come up with some other cunning plan if you're lucky.
TBH you'd probably be OK with engineering brick spanning the joist (with some slate shimming so the timber supported the brick- not gonna be fastgrown softwood is it) :)
 
Joined
30 Apr 2009
Messages
54
Reaction score
0
Location
Wiltshire
Country
United Kingdom
I reckon that's a question for your SE, as surely the BCO will want to know the SE has signed off on it?

I think your spreader plate would be fine but def run it past your SE first. He may come up with some other cunning plan if you're lucky.
TBH you'd probably be OK with engineering brick spanning the joist (with some slate shimming so the timber supported the brick- not gonna be fastgrown softwood is it) :)

SE is away for a week and I want to get moving, or at the very least have some workable ideas to present to him. Thought I would ask here to save wasting his time with totally unworkable solutions.

For instance I could move the post sideways (towards the centre of the beam) and drop down into the space between 2 joists. This would mean the beam (100wx200d) would project past the post by around 250mm. Would that still be okay to support the rafter (slate pitched roof) resting on it, or would it just snap at the post and the SE laugh at the suggestion :eek:
 
Last edited:
Joined
30 Apr 2009
Messages
54
Reaction score
0
Location
Wiltshire
Country
United Kingdom
Just to provide an answer that might be of use to future 'searchers'.
SE says moving post and having a short (300mm) cantilevered end would not be a problem, so that's probably the route I shall take.
 
Joined
30 Apr 2009
Messages
54
Reaction score
0
Location
Wiltshire
Country
United Kingdom
Just for completeness, oak is now in and the roof is still up, props came out a few weeks ago . Did it all myself in the end. Inspector is happy, so am I.

post4.jpg
 

DIYnot Local

Staff member

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.


Are you a trade or supplier? You can create your listing free at DIYnot Local

 
Sponsored Links
Top