Measure and plan
First decide where the fire pit needs to be, making sure it’s not too close to any fences, trees or other flammable materials in the garden. You can make the fire pit any size or shape you like, but as this one will be doubling up as a barbecue, we constructed it to be a 44 x 78cm rectangle.
It’s important to do a ‘dry fit’ – arranging the bricks in position without mortar – to make sure you have enough bricks to complete the project and to see if it looks right. If you’re building on to soil, you’ll need to lay some concrete foundations first. So dig a 30cm-deep trench in the dimensions of your firepit and fill it with hardcore to a depth of 20cm, with a 10cm layer of concrete or Postcrete on top.