Combination swing frame & monkey bars
STEP 1. Do the cutting
The top bars
Cut the top bars out of 1-1/2" x 1-1/2" (38mm x 38mm) wood. If you cannot source that size, then near enough will do.
In all you will need about 4.4m (14 1/2ft) allowing for a bit of waste.
Cut 7 pieces [b] to the lengths as given in the drawing below. Also angle each end as shown in the drawing below.
Note: You will need to round the corners of the bars with sandpaper, planer, or other, in order to make them easier on the hands of kids that grip and swing from them.
The legs and beams
Cut the legs and beams out of 2x3 (75mm x 50mm) wood. You can upgrade to 2x4 (100mm x 50mm) if you cant obtain the former, or you want to make the structure more substantial.
In all you will need 6 pieces [a] & [c] @ 8ft (2.4m) long.
The end rails
Cut the end rails out of 1x6 (150mm x 25mm) wood.
In all you will need about 16ft (4.8m) allowing for a bit of waste.
Cut two top end rails [d] 26" (650mm) long, angled back 15 degrees off square at each end.
Cut two bottom end rails [e] 60" (1500mm) long, angled back 15 degrees off square at each end.
Refer to the plan drawing below.
The plywood braces
Half a standard size sheet of 5/8" (15mm) thick plywood will do the trick to cut all the pieces.
A standard size sheet is 4ft x 8ft (1200mm x 2400mm). So half of that is a square 2ft x 2ft (1200mm x 1200mm).
Cut four pieces [f] to the dimensions given in the plan drawing below.