new joist floor around chimney

[marsaday]

Do i attach joist hangers into the chimney stack or do i trim and go around them?

i will be spanning the joists into the party wall and off a spine wall. Span is about 4m's. i have a chimney breast in the way and it is 135cm wide. Can i hang 3 joist hangers off here or do i double up the joists at both sides of the chinmey breast and run joists between these 2 doubled up joists ? if i do this should the joists between the doubled up joists be also douubled up themselves?

 

[noseall]

Double up the trimming joists and the trimmer then fix the trimmed joists to the trimmer with jiffy hangers.

Clear as mud?

 

[marsaday]

i think so.

the trimming joists sit either side of the chimney breast and so these are doubled up. the joist spanning between these 2 joists (and sits next to the chinmey breast) is called the trimmer?

how can i draw a diagram for you. what should i use as this would be so much easier. i have tried doing something in word but i cannot upload it,

 

[noseall]

It is also possible to use build in type hangers, but i would only use these if i were building them in as opposed to retrospectively installing them.