Doorway below purlin prop

15 Apr 2019
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United Kingdom
I'm looking to split one large bedroom into two.
It will require a new entrance doorway knocking through on the landing.
The wall is a supporting wall.
As it is upstairs there is only three or four courses of bricks above where the doorway will be.
However when checking in the loft there is a purlin prop on this wall.
The prop does not sit above the potential doorway but it is within 60mm of the opening.
Is this allowed?
Would I need to spread the load?
Would i need a lintel above the door or can I remove the bricks above and replace with stud?
If a lintel is fitted this would the require bricks removing below the purlin prop as it is so close.
Any advise please?
Thanks in advance
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Yes you need something strong enough to take the load and transfer it downwards to the foundations - via other adjacent walls
Thanks for the reply.
Sorry if I'm being thick but could you be more specific?
I have added a basic diagram in case my explanation wasnt very good
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