Guys, sorry for creating a new post about foundation hight. However I am feeling uneasy about the height of the foundations which will be poured on Monday.
I am looking to get a suspended timber floor installed so that the floor is the same throughout the house and thus allows passage of air in the void. I understand there are building regs relating to minimum void height below joists, and wall plates etc. Thus to get my designed floor height I need the top of the foundations to be at least 300mm below ground level, meaning the trench should be 1.4m deep. Allowing 1m for the trench fill foundation. (As seen in drawing and as specified by SE as 600x1000 C35 concrete)
However, the contractors have only dug to a max of 1.1m below ground level (one side is 1m below ground level), though I paid extra to get it dug to 1.4m. I’ve been told “don’t worry, it won’t be a problem for your floor”. Unfortunately they have booked the Concrete to pour the foundations in 2 days.
Given the state of things, the foundations will be approx ground level. This effectively means once the joists go in, the joists closest to the foundations would effectively be sitting on top of the foundations with no void.
How big of a problem is this? And is there a way to install the joists without raising the floor level once the foundations are in?
I am looking to get a suspended timber floor installed so that the floor is the same throughout the house and thus allows passage of air in the void. I understand there are building regs relating to minimum void height below joists, and wall plates etc. Thus to get my designed floor height I need the top of the foundations to be at least 300mm below ground level, meaning the trench should be 1.4m deep. Allowing 1m for the trench fill foundation. (As seen in drawing and as specified by SE as 600x1000 C35 concrete)
However, the contractors have only dug to a max of 1.1m below ground level (one side is 1m below ground level), though I paid extra to get it dug to 1.4m. I’ve been told “don’t worry, it won’t be a problem for your floor”. Unfortunately they have booked the Concrete to pour the foundations in 2 days.
Given the state of things, the foundations will be approx ground level. This effectively means once the joists go in, the joists closest to the foundations would effectively be sitting on top of the foundations with no void.
How big of a problem is this? And is there a way to install the joists without raising the floor level once the foundations are in?