How do I calculate the length of a ladder I need to reach a certain …
Trig tells us the height of the top of a ladder tilted at 75 degrees will be .97 the length. For example, a 16' extension ladder (which is really 13' long extended) set up at a 4:1 / 75 degree pitch will touch a wall at about 12'7" (13' * .97). This chart has all you need to know, no math:
Is there a standard height and depth for stairs?
2011年8月1日 · The general rule (in the US) is 7-11 (a 7 inch rise and 11 inch run) (17.78cm-27.94cm). More exactly, no more than 7 3/4 inches (19.7cm) for the riser (vertical) and a minimum of 10 inches (25.4cm) for the tread (horizontal or step). You can find some more information here as well on other stair-related dimensions.
A-frame angle for swing - Home Improvement Stack Exchange
With a beam under 7ft high, add cross-members on the A-frames about 5ft up and hang the swing bench on chains that hang from big horizontal bolts through these cross pieces. Along with the size of the swing bench, the short length of the chains will limit the swing angle. You'll still need to anchor the rear feet, though, as the mass projecting ...
ceiling fan - How can I change light bulbs in a fixture located 20ft ...
A small scaffolding tower might be your best option. This will give you the height and safety you need. Something like this one. While it might be a bit expensive for just changing light bulbs you'll need it when you come to paint the ceiling in this room.
Is there a typical layout to blocking installed for backing in new ...
2019年7月2日 · Its entirely up to you, so you should schedule a walk-through specific to that, and another specific to electrical (fixture and device locations). Make estimations at height based on your preference of hardware and related items (towels, clothing). Oversize somewhat to give flexibility later (12" in height isn't too much).
How can I create a platform on my stairs strong enough to …
A scaffold for a staircase would be nice, but there's no place around here that rents them out for a reasonable price. I came across an idea on YouTube to set a ladder up against a wall and then lay a board across the staircase and one of the rungs on the ladder, but there's no way I can transport a board of such length in my sedan.
Under what circumstances is 5/8" drywall required?
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safety - Is ladder less safe at greater angles? - Home Improvement ...
2023年5月15日 · 7. The rule of thumb is a 1:3 ratio--1 unit out for every three up. Three feet would only be suitable for a ladder up to 9 feet high. Three feet out for a 25 foot ladder is absurd. You'd topple before hitting the halfway point. It should be at least eight feet out. So yes, slope matters, and too steep a slope can easily result in an arcing ...
Join two extension ladders together to make an a-frame ladder?
2021年10月22日 · The flair at the top allows the other extension ladder to rest fully inside of it. The 30' ladder was extended only about 8 feet in order to reach my 20' ceiling. The other ladder was extended to a height of about 16 feet because extending it more made the whole thing hard to set up. So the 30' ladder actually stuck out over the gorilla ladder.
wood - How to calculate the maximum safe load on a horizontal …
2015年10月13日 · Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.