To make the The Ultimate Outdoor Gym, you’ll need the following materials, most of which are available from the nearest building supplies or hardware store:

• Lots of logs and cord wood

• Lumber

We suggest using the lumber calculator included with the Brojects App (free for iPhone and iPad).

• Hardware

The usual assortment of screws, nuts, bolts, hinges plus a handful of pulleys and lifting hardware for our workout stations.

• Old tractor tire

Any large-diameter old tire will suffice.

• Trampoline

Since we’ll be fitting this into the tire, we’ll need their diameters to roughly match.

• Lengths of metal tubing

3/4″ to 1″ in diameter. You could use a solid metal rod if necessary — but it will be much harder to bend for fashioning the pull-down bar.

• Rope

Or if you want to go fancy, stainless or galvanized steel aircraft cable.

• Old row boat and oars

• Bungee cord

To add resistance to your rowing machine.

• Aluminum dock kit

Complete with plastic decking, uprights and aluminum stringers. Perhaps you have some left over from your Ultimate Swim Up Bar build?

• Resistance bands

For polymetric exercises.

• Beer keg

Full or empty depending on how much weight you like. We prefer to begin with full kegs and empty them as we go!

• Mirror

• Dowels

To make the towel rack.