Q:He pushes a can over the scaffold at 15 meters and it takes 3.25 seconds for it to land.I keep doing the problem over and over. the Correct answer is 20.5 m/s, however I keep arriving to the solution of 17 m/s. I solved it by doing Vf^2 = Vi^2 + 2adwhere the initial velocity is zero and the acceleration is -g. I made my coordinate system so that down is negative in which the distance will be negative. This however, did not give me the correct answer. Am I right or is the book right?

The initial velocity is not zero since the scaffold is moving upward when the can gets pushed over. And final velocity, vf, does not represent the speed of the scaffold (if that is what you're trying to solve). y = (vo)(t) - (1/2)gt? 15 m = (vo)(3.25 s) - (1/2)(9.81 m/s?)(3.25 s)? vo = +20.5 m/s

Q:Standard for inspection of portal scaffolding

1.4 willow nails shall be made of ML2 steel specified in GB 715. All accord with the 1.5 electrode should be used in GB 5117 series E43 electrode. Comply with the 2 basic requirements: qualified 2.1 door frame and accessories in different combination conditions, shall be accorded with the inspection results are summarized in table NO:2008JW1658 inspection project and standard units of measurement test results 1# 2# single determine connectivity and interchangeability. When the 2.2 cross support, the connecting rod and other accessories are connected with the door frame, the utility model is in conformity with the retreat mechanism which is used to prevent the exit. When the connecting rod is used with the lock arm, the connecting rod is not limited by the limit. The 2.3 level frame, and the door frame scaffolding should prevent off the hooks, are in line with the fastening mechanism of the fall.

Q:..or anytime around whenThe Scarlet Letter was written.I am doing a paper on why the three scenes at the scaffold were so significant.So I decided to include the history of scaffolds, but I can't seem to find any information on them.help please? :]SOURCES..if possible! :]

Mostly the person would be taken onto the scaffold , a rope fixed around their neck, and then the trap door would open and they would drop through and choke to death , very rarely did the neck break in those days , so relatives and friends would pull on the legs , thus to speed up death. Earlier in history people were strung up from trees , and sometimes stood in the back of a cart which was driven away leaving them dangling. The platform on which the guillotine was stood was also called a scaffold at times. These executions were turned into social events and hundreds of people used to go to look.

Q:A scaffold is constructed by placing two supports under a 13 ft, 9 in (a) board weighing 84 lbs. The supports are each 2 ft, 8 in (b) from their respective ends. Two painters stand on the board; one weighs 158 lbs and stands 4 ft, 11 in (c) from the left end of the board. Where must the 222 lbs painter stand so that each support carries the same weight? (express your distance in feet from the right end of the board (d).)please help!! thanks(:

Total weight = 222 + 158 + 84 = 464 lb So, each support must carry 232 lbs Working in inches: Take moment about Right hand end Board is assumed to be uniform - CG is at the center (232 x 32) + (232 x 133) = (158 x 106) + ( 84 x 82.5 ) +(222 x d)7424 + 30856 = 16748 + 6930 + 222d 222d = 14602 d = 65.77 inches Distance of 222 lb painter should be 5ft 5.77inches from Right end

Q:Erection of steel scaffolding tools and safety supplies

Anti falling device, professional tool bag, work boots (soft bottom shoes), safety lighting, transportation tools, pulley, skateboard rope, dustproof mask, special conjoined clothes, ear plugs

Q:Erection of scaffolding accessories

When the scaffolding height of more than 20m, should be in the scaffolding outside every 4 steps to set a level of reinforcement bar, and even walls should be in a horizontal layer set pieces; set of longitudinal reinforcement bars should be continuous, and the formation of the level of closed loop; on the bottom step lower door frame scaffolding should be sealed in the mouth bar, door frame and should be located on both sides of long rod should adopt sweeping bar; fastener rack pole fastened by. Construction should pay attention to the door frame and accessories should not be mixed with the same hand rack.

Q:1.How does Pearl react when Dimmesdale calls Hester and herself to mount the scaffold with him?

The answer can be found in the novel The Scarlet Letter by Nathaniel Hawthorne. Read that and you'll have the answer!

Q:On Wednesday day I'm planning to get this done (the top piercing). I've been thinking about it for a while now really want it.What problems can I have with this piercing?How long does it take to heal ect?Thanks =)

i've not had scaffolding but i've got a wide range of cartilage piercings and they take about 12weeks to heal... i would just say be careful not to catch it and keep it clean. good luck :)

Q:Bracket cast-in-place beam bracket must use bowl buckle scaffold, can not use fastener type scaffolding, there is no mandatory requirements, or specification file requirements!

5.2.5, the calculation of the column, a clear calculation of the type of stud.6.2.4, clear the structure of fastener type column.Local documents, it is not possible to regulate, do not allow the use of fastener type scaffolding. But the top of the column, to use the provisions of backwater, specification.

Q:improper design of formwork and scaffolding, not adequate braces and supports, improper handling, corrosion of material is several factor of formwork and scaffolding failure. it is estimated that more than 3000 accidents involving falls from scaffolds and 30 fatalities

Well, it seems you came close to answering your question. But are falls a scaffolding failure? For me failure means that the scaffolding sagged or fell - which may result in injuries with or without falling as when the failing scaffolding falls on a worker on the ground. I would think that major causes of failure as I defined it would be inadequate or failed attachments to the building and failure of ground support for the structure. Question needs to be improved to define what you need in answer and avoid conflict between question and detail.