A Ruby gem providing calculators and validators for BS EN 14960:2019 - the British/European safety standard for inflatable play equipment.
- Anchor Calculations: Calculate required ground anchors based on dimensions and wind loads
- Slide Safety: Calculate runout distances and wall height requirements
- User Capacity: Calculate safe user capacity based on play area and user heights
- Material Validation: Validate material specifications against EN 14960 requirements
Add this line to your application's Gemfile:
gem 'en14960'And then execute:
$ bundle install
Or install it yourself as:
$ gem install en14960
You can run this Gem on RubyRuby.dev - just create a Gemfile with these contents:
source "https://rubygems.org"
gem "en14960"And then you can test the calculations like:
result = EN14960.calculate_anchors(
length: 5,
width: 4,
height: 3
)
puts result.value # => 8
puts result.breakdownCalculate required anchors for inflatable play equipment:
result = EN14960.calculate_anchors(length: 5, width: 4, height: 3)
puts result.value # => 8
puts result.breakdown
# => [
# ["Front/back area", "4m (W) × 3m (H) = 12m²"],
# ["Sides area", "5m (L) × 3m (H) = 15m²"],
# ["Front & back anchor counts", "((12.0 × 114.0 * 1.5) ÷ 1600.0 = 2"],
# ["Left & right anchor counts", "((15.0 × 114.0 * 1.5) ÷ 1600.0 = 2"],
# ["Calculated total anchors", "(2 + 2) × 2 = 8"]
# ]Calculate minimum runout distance for slides:
# Basic runout calculation
result = EN14960.calculate_slide_runout(2.5)
puts result.value # => 1.25 (meters)
# With stop wall
result = EN14960.calculate_slide_runout(2.5, has_stop_wall: true)
puts result.value # => 1.75 (meters)Calculate containing wall requirements for different platform heights:
result = EN14960.calculate_wall_height(2.0, 1.5)
puts result.value # => 1.5 (meters)
puts result.breakdown
# => [
# ["Height range", "0.6m - 3.0m"],
# ["Calculation", "1.5m (user height)"]
# ]Calculate safe user capacity based on play area:
result = EN14960.calculate_user_capacity(10, 8)
puts result.value
# => {
# users_1000mm: 80, # 1.0m tall users
# users_1200mm: 60, # 1.2m tall users
# users_1500mm: 48, # 1.5m tall users
# users_1800mm: 40 # 1.8m tall users
# }
# With maximum user height restriction
result = EN14960.calculate_user_capacity(10, 8, 1.5, 0)
puts result.value[:users_1800mm] # => 0 (not allowed)
# With obstacles/negative play space
result = EN14960.calculate_user_capacity(10, 8, nil, 15)
# Reduces usable area by 15m²Validate materials against EN 14960 requirements:
# Rope diameter validation
EN14960.valid_rope_diameter?(20) # => true (within 18-45mm range)
EN14960.valid_rope_diameter?(10) # => false (too thin)
# Access material standards
standards = EN14960.material_standards
puts standards[:fabric][:min_tensile_strength] # => 1850 (Newtons)
puts standards[:rope][:min_diameter] # => 18 (mm)You can also use the calculator modules directly:
# Using AnchorCalculator directly
result = EN14960::Calculators::AnchorCalculator.calculate(
length: 10,
width: 8,
height: 4
)
# Using MaterialValidator directly
EN14960::Validators::MaterialValidator.valid_fabric_tensile_strength?(2000)
# => trueThe gem provides access to all EN 14960:2019 constants:
# Height categories
EN14960.height_categories
# => {
# 1000 => {label: "1.0m (Young children)", max_users: :calculate_by_area},
# 1200 => {label: "1.2m (Children)", max_users: :calculate_by_area},
# 1500 => {label: "1.5m (Adolescents)", max_users: :calculate_by_area},
# 1800 => {label: "1.8m (Adults)", max_users: :calculate_by_area}
# }
# Access all constants
EN14960::Constants::SLIDE_HEIGHT_THRESHOLDS
EN14960::Constants::MATERIAL_STANDARDS
EN14960::Constants::ANCHOR_CALCULATION_CONSTANTSThis gem implements calculations based on BS EN 14960:2019, including:
- Section 4.2.9: Containment requirements (wall heights)
- Section 4.2.11: Slide runout requirements
- Section 4.3: Number of users calculations
- Annex A: Wind load and anchor calculations
- Material specifications: Fabric, thread, rope, and netting requirements
After checking out the repo, run bundle install to install dependencies. Then, run bundle exec rspec to run the tests.
To install this gem onto your local machine, run bundle exec rake install.
Bug reports and pull requests are welcome on GitHub at https://github.com/chobbledotcom/en14960.
The gem is available as open source under the terms of the GNU Affero General Public License v3.0.
