Body base sketch model portable#

They sometimes have a small upper platform and a hand rail to assist in moving up and down the steps.

Mobile Safety Steps are self-supporting structures that have wheels or castors making them easy to move.

Hook ladder or pompier ladder, a rigid ladder with a hook at the top to grip a windowsill used by firefighters.

Some variations feature a central one-way hinge with extensible locking legs. stairs), as a trestle or when fully extended a Fixed ladder.

Folding ladder, a ladder in the step ladder style with one or more (usually no more than three) one-way hinges.

Fixed ladder, two side members joined by several rungs affixed to structure with no moving parts.

65 ft (20 m), 50 ft (15 m) and some 35 ft (10 m) extension ladders for fire service use 'bangor poles', 'tormentor poles' or 'stay poles' to help raise, pivot, steady, extend, place, retract and lower them due to the heavy weight.

Extension ladder or 'telescopic ladder', a fixed ladder divided into two or more lengths for more convenient storage the lengths can be slid together for storage or slid apart to expand the length of the ladder a pulley system may be fitted so that the ladder can be easily extended by an operator on the ground then locked in place using the dogs and pawls.

A system of counterweights is used to let the lower sliding part descend gently when released.

Counterbalanced ladder, a fixed ladder with a lower sliding part.

Christmas tree ladder, a type of boarding ladder for divers which has a single central rail and is open at the sides to allow the diver to climb the ladder while wearing swimfins.

Chicken ladder, a ladder comprising a single central stile with each rung projecting on either side and used by chickens to climb into a coop.

Cat ladder (US chicken ladder), a lightweight ladder frame used on steep roofs to prevent workers from sliding.

May be rigid or flexible, also boarding step(s), and swim ladder.

Boarding ladder, a ladder used to climb onto a vehicle.

Bridge ladder, a ladder laid horizontally to act as a passage between two points separated by a drop.

Attic ladder, pulled down from the ceiling to allow access to an attic or loft.

Assault ladder, used in siege warfare to assist in climbing walls and crossing moats.

Body base sketch model portable#

Accommodation ladder, portable steps down the side of a ship for boarding.Rigid ladders are available in many forms, such as:

The ladder is depicted as long and flexible, possibly made out of some sort of grass.

The painting depicts two humans using a ladder to reach a wild honeybee nest to harvest honey. A ladder is featured in a Mesolithic rock painting that is at least 10,000 years old, depicted in the Spider Caves in Valencia, Spain. Ladders are ancient tools and technology. They are commonly made of metal, wood, or fiberglass, but they have been known to be made of tough plastic. Rigid ladders are usually portable, but some types are permanently fixed to a structure, building, or equipment. The vertical members of a rigid ladder are called stringers or rails (US) or stiles (UK). There are two types: rigid ladders that are self-supporting or that may be leaned against a vertical surface such as a wall, and rollable ladders, such as those made of rope or aluminium, that may be hung from the top. A ladder is a vertical or inclined set of rungs or steps used for climbing or descending.