I have some builders doing a single storey rear extension and because I do not want to rely only on their "experience" (last job I did this, last job I did that) I thought I'd post this question here.
They are going to knock through the rear wall of the a mid terrace house to make an opening 4.7m wide. Builders are planning on using 5 props/strongboys for the outside wall and 5 props to hold the floor joists on the inside.
Does that sound about right? I thought the spacing between the props should not be over 900mm or am I talking nonsense?
They are going to knock through the rear wall of the a mid terrace house to make an opening 4.7m wide. Builders are planning on using 5 props/strongboys for the outside wall and 5 props to hold the floor joists on the inside.
Does that sound about right? I thought the spacing between the props should not be over 900mm or am I talking nonsense?