Common Types of Ladder

A ladder is a set of steps attached vertically with poles or ropes. It is used to climb up or down. Here, we have listed common types of ladders used in daily life. 

Common Types of Ladder

Extension Ladder (लम्बवत सीधी सीढ़ी)
Step Ladder ("Λ" आकार वाली सीढ़ी)
Step Stool ("Λ" आकार वाली छोटी सीढ़ी)
Telescopic Ladder (ऊँचाई में कम-ज्यादा हो सकने वाली सीढ़ी)
Platform Ladder ("Λ" आकार तथा चौड़े पायदान वाली मध्यम सीढ़ी)

Other Types of Ladder

Articulated Ladder (आकार बदल सकने वाली सीढ़ी)
Rope Ladder (रस्सी की सीढ़ी)

Extension Ladder (लम्बवत सीधी सीढ़ी)

An extension ladder is a simple ladder with a set of steps attached with two vertical poles. This type of ladder requires external support to balance itself.
Pros:
Can be used for long heights
Easy to manage
Cons:
Requires external support
Sometimes unstable

Step Ladder ("Λ" आकार वाली सीढ़ी)

A step ladder is a "Λ" shape ladder. It consists of two sets of extension ladders that are connected together at the top.
Pros:
No external support required
Easy to manage
Foldable
Stable
Cons:
Can't be used for longer heights (because of height vs weight ratio)

Step Stool ("Λ" आकार वाली छोटी सीढ़ी)

A step stool is a "Λ" shape stool (2 or 3 step ladder).
Pros:
No need for external support
Foldable
Good for kitchen
Less expensive
Stable
Cons:
Can be used for shorter heights only

Telescopic Ladder (ऊँचाई में कम-ज्यादा हो सकने वाली सीढ़ी)

A telescopic ladder is an advanced version of the extension ladder. It is made of tubular aluminium and 360° hinges. the hinges allow extension and reduction in height (as per requirement).
Pros:
Can be used for both shorter and longer heights
Easy to manage
Portable
Requires less storage space
Cons:
Requires external support

Platform Ladder ("Λ" आकार तथा चौड़े पायदान वाली मध्यम सीढ़ी)

A platform ladder is a "Λ" shape ladder. It consists of wider footrests, two sets of poles, and a guardrail.
Pros:
No external support needed
Foldable
Comfortable
Easy to manage
Cons:
Can't be used for longer heights (because of height vs weight ratio)

Articulated Ladder (आकार बदल सकने वाली सीढ़ी)

An articulated ladder is a type of ladder that can change its shape. It consists of two poles, a set of steps, and locking hinges.
Pros:
No external support needed
Foldable
Portable
Cons:
Limited height range
Unstable in some positions

Rope Ladder (रस्सी की सीढ़ी)

A rope ladder is made of rope and footsteps. It consists of two ropes and a set of steps that are evenly spaced and tied with the ropes.
Pros:
Foldable
Portable
Can be used for both shorter and longer heights
Cons:
Requires a hanging medium