Henriette Firepit February 27th, 2018 - 11:13:38
Seat distance from the firepit is critical. Too close and the fire will be too hot; too far away and the heat wont reach you. You can vary the distance with each seat but we found that for a pit 800mm in diameter the seats should be about 1m away from the pit. This allows people to walk in front of each other around the fire. Once the rock seats are in place the next job was to pour concrete around the pit and around the bottom of the seats so that the outside line of concrete joins all the stones about halfway. The back of the rocks protrudes out into what will become turf.
Once the stone lining was completed we used an excavator to place the large stone seats. Depending on the size of the stones they may have to be dug into the ground or set higher on gravel to give them an approximately consistent height. Bearing in mind that a comfortable adult seat height should be 300 - 400mm the stones need to conform to this measurement. By the time the concrete is poured and the paving laid the finished ground height will be 150mm higher than existing ground level, meaning that the rocks should stand 450 - 550mm above the ground.
Procedure: First, we excavated a pit approximately 1metre (3 feet) in diameter and 800mm deep. The ground we were working on was very rocky so we used a backhoe and it was difficult to carve a smooth hole as you can see by the photos. Next we dug a drainage channel from the bottom of the hole to a lower point beyond the extent of the fire area. This was essential in this circumstance due to the heavy rainfall and the heavy soil. If your soil is porous it may not be necessary to provide drainage to the pit. In the channel we laid the plastic drainage pipe and covered it with gravel. Because we wanted to line the pit with the 600mm granite slabs we placed extra gravel in the bottom of the pit to set the stones on upright in a circle.
When you buy a new copper firepit there are some safety issues that you will want to follow. One of the most important things to keep in mind is the weather. If your area has issued a fire warning of any type you wont want to start a fire outdoors. In dry areas it is better to be safe than to be sorry. If there is no fire warning remember also that you need to keep your fire under control. Make sure that your fire doesnt get too big, and keep a screen on the firepit so that there wont be any burning embers or ashes flying away from the fire.