©Jason McConnel 2025 ALL RIGHTS RESERVED.
NRPA Playground Safety Inspector Course -
Dimensions Exam Study Guide.
Min. radius - Suspended Members / Swing Seat - Answer✔0.25"
Steps and Rungs - spacing tolerance - Answer✔0.25"
Accessible Route - max. vertical rise w/o 45 degree taper - Answer✔0.25"
Accessible Route - max. vertical rise with 1/4" 45 degree taper - Answer✔0.5"
Ramp and Barrier w/o curb - max. space allowed - Answer✔1"
Minimum diameter - Non-Rigid Component Suspended between two play units or between play
unit and ground within 45 degree of horizontal - Answer✔1"
Neck Width - partially-bounded opening probe - Answer✔1.875"
Max. Diameter - Sliding Pole - Answer✔1.9"
Min. width and length <30 degree from horizonal - Designated Playing Surface - Answer✔2"
Min. curb height - wheel chair access ramps where guardrails or barriers not extending within 1"
of ramp surface OR ramps with two rails and no barrier OR ramps with barrier beyond the ramp
edge - Answer✔2"
Neck length - partial-bounded opening probe - Answer✔3"
min. length - seesaw and spring rocker handgrip intended to be gripped - Answer✔3"
minimum length - spring rocker footrests - Answer✔3.5"
outside diameter - large projection gauge - Answer✔3.5"
Min. height - slide sidewall - Answer✔4"
Min. inside perimeter - suspended rope, cable, or chain - Answer✔5"
min. length - seesaw and spring rocker handgrip intended to be gripped by 2 hands - Answer✔6"
Width - partially bounded opening probe (A) - Answer✔6.1"
Width - torso probe - Answer✔6.2"
, ©Jason McConnel 2025 ALL RIGHTS RESERVED.
min. exit height - slides > 48" High - Answer✔7"
Max. length - rope, chain or cable attached at one end - Answer✔7"
min. horizontal clearance to first rung - horizontal ladder accessed by rung - Answer✔8"
shoulder width - partially-bounded opening probe (B) - Answer✔8.5"
min. clearance between platform and surface - rotating equipment >20" diameter - Answer✔9"
min. space - horizontal ladder rungs for children less than or equal to 4 yrs - Answer✔9"
max. horizontal clearance to first rung - horizontal ladder accessed by rung - Answer✔10"
max. exit height - slides <48" high - Answer✔11"
minimum length - slide exit region - Answer✔11"
min. height - accessible transition platform - Answer✔11"
max. height - balance beam for children 2-5
max. height - balance beam for children 5-12 - Answer✔12"
16"
min. slide chute width - slides for children 2-5
min. slide chute width - slides for children 5-12 - Answer✔12"
16"
min. clearance from seat to surface - to-fro swing seat - Answer✔12"
max. distance between - stepping forms for children 2-5 - Answer✔12"
max. height w/o an access component - adjacent platforms for children 2-5
max. height w/o an access component - adjacent platforms for children 5-12 - Answer✔12"
18"
min. lower handrail height - wheelchair ramps w/ barriers - Answer✔12"
max. standing surface - rotating equipment for children 2-5
max. standing surface - rotating equipment for children 5-12 - Answer✔14"
18"
min. seat height - spring rockers
max. seat height - spring rockers - Answer✔14"
28"
NRPA Playground Safety Inspector Course -
Dimensions Exam Study Guide.
Min. radius - Suspended Members / Swing Seat - Answer✔0.25"
Steps and Rungs - spacing tolerance - Answer✔0.25"
Accessible Route - max. vertical rise w/o 45 degree taper - Answer✔0.25"
Accessible Route - max. vertical rise with 1/4" 45 degree taper - Answer✔0.5"
Ramp and Barrier w/o curb - max. space allowed - Answer✔1"
Minimum diameter - Non-Rigid Component Suspended between two play units or between play
unit and ground within 45 degree of horizontal - Answer✔1"
Neck Width - partially-bounded opening probe - Answer✔1.875"
Max. Diameter - Sliding Pole - Answer✔1.9"
Min. width and length <30 degree from horizonal - Designated Playing Surface - Answer✔2"
Min. curb height - wheel chair access ramps where guardrails or barriers not extending within 1"
of ramp surface OR ramps with two rails and no barrier OR ramps with barrier beyond the ramp
edge - Answer✔2"
Neck length - partial-bounded opening probe - Answer✔3"
min. length - seesaw and spring rocker handgrip intended to be gripped - Answer✔3"
minimum length - spring rocker footrests - Answer✔3.5"
outside diameter - large projection gauge - Answer✔3.5"
Min. height - slide sidewall - Answer✔4"
Min. inside perimeter - suspended rope, cable, or chain - Answer✔5"
min. length - seesaw and spring rocker handgrip intended to be gripped by 2 hands - Answer✔6"
Width - partially bounded opening probe (A) - Answer✔6.1"
Width - torso probe - Answer✔6.2"
, ©Jason McConnel 2025 ALL RIGHTS RESERVED.
min. exit height - slides > 48" High - Answer✔7"
Max. length - rope, chain or cable attached at one end - Answer✔7"
min. horizontal clearance to first rung - horizontal ladder accessed by rung - Answer✔8"
shoulder width - partially-bounded opening probe (B) - Answer✔8.5"
min. clearance between platform and surface - rotating equipment >20" diameter - Answer✔9"
min. space - horizontal ladder rungs for children less than or equal to 4 yrs - Answer✔9"
max. horizontal clearance to first rung - horizontal ladder accessed by rung - Answer✔10"
max. exit height - slides <48" high - Answer✔11"
minimum length - slide exit region - Answer✔11"
min. height - accessible transition platform - Answer✔11"
max. height - balance beam for children 2-5
max. height - balance beam for children 5-12 - Answer✔12"
16"
min. slide chute width - slides for children 2-5
min. slide chute width - slides for children 5-12 - Answer✔12"
16"
min. clearance from seat to surface - to-fro swing seat - Answer✔12"
max. distance between - stepping forms for children 2-5 - Answer✔12"
max. height w/o an access component - adjacent platforms for children 2-5
max. height w/o an access component - adjacent platforms for children 5-12 - Answer✔12"
18"
min. lower handrail height - wheelchair ramps w/ barriers - Answer✔12"
max. standing surface - rotating equipment for children 2-5
max. standing surface - rotating equipment for children 5-12 - Answer✔14"
18"
min. seat height - spring rockers
max. seat height - spring rockers - Answer✔14"
28"
