Gaga pit calculator

Pick your size. See the whole budget.

Choose a standard timber length and wall height. See the kit price and an estimated local timber budget.

Top-down view of the octagonal pit, with one side length and the size across
Side view of one wall: timber boards stacked, with a full-height steel corner support at each end and no upright posts
2.4 m

Your pit is about 5.8 m across.

Wall height
Gaga kit, 80 cm walls$549
Local timber, estimate 32 lengths of 2.4 m timber$950
Estimated kit + timber budget$1,500
Get my kit quote

Your PDF quote covers the kit, free delivery and a timber shopping list. Pay by card, bank transfer or purchase order (30-day terms).

Ships in 1–2 days with tracking. Timber is estimated at $12.50 a metre; local prices vary.

No posts to concrete. Built in a day.

A school lawn with a stack of timber posts, a freshly dug post hole and a wheelbarrow of wet concrete beside bags of cement, each crossed out 16 timber posts 8 post holes to dig 16 bags of concrete to mix

None of this. Just bolt on the steel corner supports.

A pit with wooden corner posts needs 16 posts, two at each corner, each concreted 30 to 40 cm into the ground with about 2 bags of concrete per corner, and a post set in the wrong spot is hard to fix. The steel corner supports replace all of that: about $400 of post timber and concrete, plus the digging, mixing and clean-up. They are forgiving too: if something needs adjusting, loosen the bolts, move it and tighten.

Full-height steel corner supports bolt onto the outside of every corner, so the corners are the strongest part of the pit and the inside stays clear.

  • Two people, one day. Stack the timber, bolt on the steel corner supports, done.
  • Free delivery, Australia-wide. Ships in 1–2 days, with tracking.

Want help finding a local timber supplier? Ask us.

How we estimate the timber budget

An octagon is about 2.4 times its side length across, flat to flat: 1.8 m sides make a pit about 4.3 m across, 2.4 m sides about 5.8 m, and 3.0 m sides about 7.2 m. Each pit has 8 sides of 200 mm high timber: 3 rows for 60 cm walls, 4 rows for 80 cm walls. You need 8 sides × rows lengths of timber, each as long as the side, priced at about $12.50 a metre. For 2.4 m sides and 80 cm walls that is 32 lengths of 2.4 m (about $30 each), about $950 in all, so with the $549 kit the budget is about $1,500. Local timber prices vary by supplier. The kit includes a timber list for standard 2.4 m sides; the online list gives the lengths for your chosen size. See the timber shopping list.