I need a ladder, but can't work out what length!
If a ladder has an open length of say 5.2m how high up will it go? I understand it should sit 25 degrees from vertical, so there must be a formulae?
2007-04-21 09:58:33 · 6 answers · asked by Anonymous in Home & Garden ➔ Maintenance & Repairs
1 foot out for every 4 feet up calculate the distance you need to reach divide by 4 subtract from the distance final safe distance is your answer. Ex. 20ft ladder should only be extended to a safe working height of 15ft.
2007-04-21 13:17:00 · answer #1 · answered by ldsbrmp 2 · 0⤊ 0⤋
To be placed safely, a ladder should sit 1/4 or 25% of the height of the building and allow 3 feet above the roof. For example, you have a 16ft. ladder (5.2m). You can safely use it on a 12' roof.
2007-04-21 10:41:40 · answer #2 · answered by Rex 2 · 0⤊ 0⤋
Sorry this isn't metric:
Needed Height/ Height with 3' extension above the roof
9-foot max. 16-foot
9 to 13 feet 20-foot
13 to 17 feet 24-foot
17 to 21 feet 28-foot
21 to 25 feet 32-foot
25 to 28 feet 36-foot
28 to 31 feet 40-foot
2007-04-21 10:05:28 · answer #3 · answered by fluffernut 7 · 0⤊ 0⤋
Have you ever heard of an extension ladder? With an extension ladder you can reach varying heights. Unless your trying to get an answer for your homework.
2007-04-21 10:04:54 · answer #4 · answered by Anonymous · 0⤊ 0⤋
the easiest way to work out how long a ladder can go is this ..you ALLWAYS leave a minimum of two rungs in the clear in other words you NEVER extend to the last rung ..only as far as the second rung down
2007-04-21 22:16:04 · answer #5 · answered by boy boy 7 · 0⤊ 0⤋
About 4m.For safety.
2007-04-21 10:02:14 · answer #6 · answered by taxed till i die,and then some. 7 · 0⤊ 0⤋