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From what I have read: The crane "grows" using a jib, hydraulics, and sections. When the building is completed, the arms are dissassembled on the roof (they may be removed by another crane attached to a truck, or by other equipment on the roof?), and the process is then reversed (each section removed floor by floor by equipment inside the building). The jib is lowered as each section is removed, until there is nothing left, and the jib assembly is removed at ground level. I may need correction on this one though
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Why you only measure tall buildings in meter and not in kilometer?
It doesn't make sense to measure buildings on the order of a kilometer, since no building comes close to reaching that height. Why say that the tallest building in the world is "0.828 kilometers" tall when you could just say it's "828 meters" tall?
A flagpole 4 m tall stands on a sloping roof A support wire 5 m long joins the top of the pole to a point on the roof 6 m up from the bottom of the pole At what angle is the roof inclined to horizonta?
55.77
How do you figure roofing number of squares on roof?
You measure the roof to get the square feet. There are 100 square feet in a square. On a straight single peak roof it's height times length on one side and double it. Then divide the total square feet by 100. This final number will give you the number of squares you have. If the roof is a flat, commercial roof, it is the same (100 sq. ft = 1 SQ). However, if it is a metal panel commercial roof, you need to add in "stretch factor" or the added amount of square footage if the panels were to be stretched flat. A good estimate for this is: If the ribs on the metal panel are 1" tall, add 10% to your square footage; if the ribs are 1.5" tall, add 15% to your total square footage. So, if you have a metal roof that is an R-panel (_/-\_), the ribs are 1.5" tall and the roof is 100 SQ (or 10,000 sq ft), take 10,000 sq ft + 15% (1500) = 11,500 sq ft (115 Squares).
A brick is released with no initial speed from the roof of a building and strikes the ground in 2.00 s encountering no appreciable air drag How tall in meters is the building?
19.6m
If 6 by 3 meter flat roof how many square meters in it?
6 meters (length) x 3 meters (tall) = 18 meters2 There are 18 square meters.
