CPSI Common Playground Hazards 2 — Questions and Answers

Question 1: What is the definition of 'head entrapment' as used in ASTM F1487?

Any opening that could trap a child's neck
An opening between 3.5 and 9 inches where a child's head can enter but cannot exit (Correct answer)
An opening under 3.5 inches where a child's head cannot enter at all
An opening over 9 inches that traps an entire body

Correct answer: An opening between 3.5 and 9 inches where a child's head can enter but cannot exit

Head entrapment refers to openings between 3.5 and 9 inches — large enough for a child's head to enter but too small for it to exit, creating a strangulation risk.

ASTM F1487 defines the head entrapment zone as openings measuring between 3.5 inches and 9 inches in diameter or in any critical dimension. A child's head can pass through a 3.5-inch or larger opening, but the head cannot easily exit a space smaller than 9 inches once entered (due to the shape of the head, ear protrusions, and panic response). This creates a dangerous entrapment condition that can lead to strangulation. All equipment openings must be either smaller than 3.5 inches or larger than 9 inches.

Question 2: Which clothing item is frequently identified as a strangulation hazard on playground equipment?

Velcro closures
Drawstrings on hoods and waistbands (Correct answer)
Loose laces on athletic shoes
Metal belt buckles

Correct answer: Drawstrings on hoods and waistbands

Drawstrings on hoods and waistbands are a well-documented strangulation hazard — they can catch on equipment and create neck entrapment.

Drawstrings, particularly on jacket hoods and waistbands, are a documented strangulation hazard on playground equipment. A drawstring can catch on a protrusion, fastener, or S-hook and tighten around a child's neck as they slide or fall. The CPSC has issued specific guidance on drawstring hazards. CPSIs should note any equipment features — protruding hardware, S-hooks with gaps, openings — that could catch drawstrings or clothing. Parents and supervisors should be advised to remove or secure drawstrings before play.

Question 3: What is the 'protrusion' hazard category in ASTM F1487?

Surfaces that are slippery when wet
Exposed hardware extending beyond the nut that can snag clothing or cause lacerations (Correct answer)
Equipment that protrudes into the use zone of adjacent equipment
Roots or rocks protruding from the ground in the use zone

Correct answer: Exposed hardware extending beyond the nut that can snag clothing or cause lacerations

Protrusion hazards are exposed fasteners (bolts, screws, etc.) extending more than 2 thread pitches beyond the nut, which can snag clothing or cause lacerations.

ASTM F1487 defines protrusion hazards as hardware (bolts, screws, pins) that extend beyond their attachment points by more than 2 thread pitches. These protrusions create snag hazards (catching drawstrings or clothing, causing entrapment) and laceration hazards (cutting a child who contacts the exposed end). CPSIs must check all fasteners on playground equipment and note any that project beyond 2 thread pitches. Correction typically involves cutting the excess thread flush or replacing with shorter hardware.

Question 4: What is the hazard posed by a slide's surface temperature on a hot day?

Thermal burn injury from contact with overheated metal or dark-colored plastic surfaces (Correct answer)
The slide becomes electrically charged
Sliding speed increases to unsafe levels
UV degradation of plastic only

Correct answer: Thermal burn injury from contact with overheated metal or dark-colored plastic surfaces

Metal and dark-colored plastic slides can heat to temperatures capable of causing serious thermal burns in direct sunlight, particularly in hot climates.

Playground equipment, particularly metal slides and dark-colored plastic surfaces, can reach temperatures of 150-180°F or higher in direct sunlight in warm climates. These temperatures can cause second and third-degree burns on contact, especially on bare skin. CPSIs should note equipment orientation relative to sun exposure, presence of shade structures, and equipment material. Recommendations may include installing shade covers, using light-colored materials for replacement, posting warning signs, or restricting use during peak sun hours.

Question 5: What is the 'tripping hazard' concern for playground use zones?

Wet surfacing after rain
Exposed concrete footings, rocks, roots, or abrupt surfacing height changes within the use zone (Correct answer)
Surfacing that is too soft
Painted surfaces that become slippery

Correct answer: Exposed concrete footings, rocks, roots, or abrupt surfacing height changes within the use zone

Tripping hazards in use zones include exposed footings, rocks, roots, or abrupt changes in surfacing level that can cause falls.

Tripping hazards within use zones are a significant concern because children often run, jump, and move quickly on playgrounds. Hazards include: exposed concrete or metal footings; rocks or roots at or near the surface; abrupt transitions between surfacing materials at different heights; displaced or settled surfacing creating ridges; holes; and equipment parts (handles, steps) at foot level outside the equipment footprint. CPSIs must evaluate the entire use zone, not just the equipment itself, for these ground-level hazards.

Question 6: What is the primary hazard concern with 'trip-wire' level horizontal cables or bars on playground structures?

They corrode and weaken over time
Children running at the playground can clothesline or trip on cables installed at neck or leg height (Correct answer)
They are only a hazard when wet
They create excessive vibration in the structure

Correct answer: Children running at the playground can clothesline or trip on cables installed at neck or leg height

Horizontal cables or bars at neck or leg height create clotheslining or tripping hazards for running children who may not see them.

Horizontal cables, bars, or other elements installed at neck height (approximately 18 to 52 inches above the ground) create a 'clothesline' hazard for running children — a running child can be suddenly stopped at the neck by an unseen cable, causing severe injury. Similarly, cables at ankle or shin height create tripping hazards. ASTM F1487 addresses this concern, and CPSIs must evaluate all structural elements for accessibility to running children and note any components at hazardous heights.

CPSI Common Playground Hazards 2

What is the definition of 'head entrapment' as used in ASTM F1487?