Playground use zone calculator

Calculate the use zone

Calculator

Use zone footprint

Equipment type

Deck or climber Swing bay Slide Spinner or rocker

Equipment length (feet) For a swing bay, the width of the frame.

Equipment width (feet) Front to back, along the swing arc for a swing.

Key height (feet) Swing: pivot height. Slide: platform height. Otherwise: fall height.

Surfacing cost per sq ft (optional) Leave at 0 to skip the cost line.

Clearance, sides
Clearance, front and rear
Total surfaced footprint
Estimated surfacing cost

The rules the calculator applies

Six feet in every direction is the general use zone for equipment over 30 inches high¹. It is measured from the perimeter of the structure outward, at ground level, and it has to be clear of obstructions as well as surfaced.

Swings are the exception that changes site planning. The front and rear use zone is twice the pivot height, measured from the point the swing hangs from. The sides stay at 6 feet from the frame. For a to-fro tire swing on a single pivot, the zone is a circle of 6 feet plus the length of the suspending chain measured from the pivot.

Slides need 6 feet at the sides and the rear. At the exit, the zone extends from the end of the chute by a distance equal to the slide platform height, never less than 6 feet and never more than 8 feet for slides over 4 feet high.

Spinning and rocking equipment is measured from the outer edge of the moving part at full extension, at the lowest point of any tilt.

Equipment	Sides	Front and rear
Deck, climber, composite	6 ft	6 ft
Swing bay	6 ft from frame	2x pivot height
Slide	6 ft	6 ft rear, platform height at exit (6 to 8 ft)
Spinner, orbiter	6 ft from outer sweep	6 ft from outer sweep
Spring rider	6 ft	6 ft

Use zone rules by equipment type. Where a manufacturer specifies more, the larger figure applies.

Obstructions and separation

A use zone is not just surfaced area, it is clear surfaced area. Anything a falling child can hit counts as an obstruction: fences, curbs, tree trunks and surface roots, benches, waste bins, sign posts, drainage grates, light poles, retaining walls and the edge of a hard path.

Separation between structures has its own rule. Two structures both under 30 inches high can sit 6 feet apart with overlapping use zones. If either is over 30 inches, they need 9 feet between them and their zones must not overlap. That single line is what makes small sites hard, and it is covered in detail in fall height and use zones.

Turning the footprint into a surfacing order

Once you have the area, two more pages finish the job. The surfacing depth calculator turns the fall height into a depth and a volume, and the surfacing cost calculator prices the material and the ten year upkeep. If the total is over budget, look at fall height before you look at area: the depth requirement drops in steps, and the area does not.

What to do next

For a public site, take the footprint into the layout stage and check circulation as well as clearance, using layout and circulation. For a school or park project, budget breakdown shows where surfacing sits in the total. For a home installation, go straight to the playset fit checker.

Frequently asked questions

Can the use zone of a slide overlap the use zone of a swing?

No. Swings and slides both need their own protected area, and the CPSC handbook is explicit that swing use zones should not overlap with anything, including other equipment and circulation routes. A slide exiting into a swing arc is one of the most common serious layout errors.

How much surfacing does one swing bay need?

More than people expect. A two-seat bay with an 8 foot pivot height needs 16 feet of clearance in front and 16 feet behind, so roughly a 32 foot long corridor, plus 6 feet at each side of the frame. That is commonly 600 to 900 square feet of surfacing for a single bay.

Does the use zone include the space under the equipment?

Yes. The use zone is the surfaced area under and around the equipment, measured from the perimeter of the structure outward. Surfacing has to be at rated depth across the whole of it, not only in the middle.

What if my site cannot fit the use zone?

Then the equipment does not fit, and the fix is to change the equipment rather than the clearance. Lower structures under 30 inches may share use zones and open up small sites. Small site design works through the options.

Use zone calculator