Cut joist hangers - is this wrong?

[lngn2]

I've just spotted that our builders seem to have taken an angle grinder to joist hangers in the roof rather than use ones with a cup of the correct depth  The cuts they've made will substantially weaken the hanger I think?! 

 

Is this an issue we need to get them back for.? 

[markc]

Struggling to work out the orientation of the close ups, is this where the rafters meet the wall plate or rafters to ridge?

[joe90]

11 minutes ago, markc said:

Struggling to work out the orientation of the close ups,

To me it looks like a 45’ join, timber at the angle of the roof? Odd!

[lngn2]

Apologies! Ceiling level in a hipped roof. I've highlighted the area in the below.

[Temp]

It looks like a ceiling joist connected to a purlin. Eg the room below is a room in the roof with part sloping ceiling.

 

I think it's probably OK provided the ceiling joists aren't triangulating the roof. 

[lngn2]

As I recall the builders felt the roof needed some extra restraints, so they're semi-structural. Think I'm going to see if Building Control will come and take a look before we seal anything up..!