Final answer:
Requirements for ladders vary by type, including wooden ladders needing to be splinter-free and supporting the intended load, metal ladders being corrosion-resistant and careful use due to electrical conductivity, portable step ladders having a locking mechanism, extension ladders extending 3 feet above support points, and fixed ladders requiring safety cages for heights over 20 feet.
Step-by-step explanation:
Requirements for Different Types of Ladders-
When it comes to ladder safety and construction, various types of ladders have specific requirements to ensure they are used properly and safely. Here's an overview of the requirements for different types of ladders:
Wooden Ladders-
Wooden ladders must be free of sharp edges and splinters, constructed with non-slip rungs, and be able to support the intended load. They should be regularly inspected for cracks or decay.
Metal Ladders-
Metal ladders should be made of corrosion-resistant material, especially when used outdoors. They must have slip-resistant feet and rungs, and users need to be careful as metal ladders can conduct electricity.
Portable Step Ladders
Portable step ladders need a locking mechanism to hold the front and back open when in use and should have slip-resistant feet. The steps should be level and secure.
Extension Ladders-
Extension ladders should extend at least 3 feet above the point of support, with proper overlap between sections. They need to have non-slip feet and be positioned at the correct angle for stability.
Fixed Ladders-
Fixed ladders are permanently attached to structures and need safety devices like cages or rest platforms if the ladder is over 20 feet in height. They must be inspected regularly for any damage or wear.