Replace shower by bath

[Hl.house]

Do i need building regs to replace Shower by bath re. joists strength, any other issues?
Forgot to add, current bathroom window is fixed pane mostly, just a little pane on the top opens up. Will i need to do anything with the window if i touch the bathroom?

 

[PrenticeBoyofDerry]

Do you think your joist need strengthening?
Normally you would not need building controls to be involved in swapping a shower for bath.
You have an open-able window, so should be fine.

 

[Hl.house]

How do I know if joist need strengthening? I just bought the house and there was just a shower no bath. The openable window pane is much smaller(30cm in height and 80cm width) than fixed window pane.

 

[PrenticeBoyofDerry]

The regulations on window openings state "no minimum opening"
What depth are joists and what is the supported span? (it is not normally and issue, but things are not always normal!)