A inclined or a vertical set of steps or rungs make a ladder. The ladders are of two types: rigid ladders which can be leaned on a vertical surface and rope ladders which are attached to the top. Some types of rigid ladders are fixed to the buildings and some are portable. The rigid ladders have evolved from wood to aluminum and fiberglass. If you need a lighter ladder you can pick one made from aluminum and if you work with electrical wires take one made from fiberglass (ele…
For more information click the following article source link for the full story:
http://www.articlesbase.com/home-improvement-articles/leader…
