Q:Secured to a concrete floor with 12 30mm bolts

That can only be answered by analizing it. A crane as you are supposed to know has different loads and directions of impact due to the moving bridge, the trolley, and break loads. So what it can lift depend on the whole structure. Besides depends as much on the type of crane

Q:What kind of force acting in the brake system which encounter the lifting material force and to maintain its level.

Cranes work using hydraulics and cables. The cables are wrapped around pulleys and the pulley is turned using hydraulic power. The brake system is simply stopping the pulley from turning by reducing power. The hydraulic system typically will turn a series of gears which in turn spins the pulley that the cable is wrapped around. It's different than a brake system say on a car where when you hit the brakes, pads squeeze on the interior of the wheel rim slowing it down. Cranes you just reduce power and stop the pulley from turning. They also have emergency stops. Older cranes have wedges that would be released onto the cable and then the wedges would grab the cable and slip into a ring. The narrow end of the wedges would slip into the ring first and then as the wedges increased in diameter the grip on the cable would get tighter and then stop the cable from moving. They also have systems on the pulleys to stop the pulley from spinning. They essentially work the same way as a car break. When the emergency brake is triggered, pads will squeeze on the rim of the pulley to stop it. These mechanisms work by friction. They could also have holes around the pulley and a steel pin would be pushed into one of the holes to stop it from spinning. Of course if the force of the weight exceeded the strength of the pin, it would shear.

Q:A 3000-lb wrecking ball hangs from a 40-ft cable of density 10 lb/ft attached to a crane. Calculate the work done if the crane lifts the ball from ground level to 40 ft in the air by drawing in the cable.

The total work done by the crane equals the potential energy gained by the wrecking ball and the cable; the potential energy gained is W = V_final = Mg L + ρ L g L/2 which is the final potential energy of the wrecking ball and the cable added together. In the case of the cable, you take the center of mass of it which is located right at the center (L/2). The result is then W = 3000*32*40 + 10 * 40 * 32 * 40 / 2 = 4096000 ft-lbf = (4096000)*(0.001285067) BTU = 5263.63 BTU

Q:Please try to give information on the questions bellow: .What the climate was in the Japanese Crane's habitat (high, lows, averages, precipitation) . Plants in the Japanese crane's habitat .2-3 major animals in its habitat .2-3 minor animals in its habitatTHANK YOU SO MUCH!!! .

in the east Hokkaido, the north island of japan. some japanese crane in russia goes to north korea in winter, but cranes in hokkaido stay all through the year.

Q:Many schools I visited claim to teach styles like white crane and even Okinawa/Japanese Karate has come from white crane styles, however I seldom see techniques, kata, forms, or drills that encompass crane concepts of even crane movements. Why is that? At some traditional schools kung-fu/karate it is easy to see the animal influence but at others there is none. Does this also indicate a lack of understanding or incomplete training. What do you think.

Maybe you only got to see the very basics of the styles you observed. Our Kata has crane Rohai, Chinto and Gojushiho especially but they are black belt Kata that even the mudansha (colored ranks) in my school very rarely get to see, let alone outsiders who just come in once to observe a class.

Q:Yesterday around 9pm I saw a crane fly flying around my living room so I got a pillow and threw it over it. Sadly it found a way to get out cause when I was going to the bathroom I saw it right by the tub and I ran out. Those things are always trying to fly to me. Anyways there attracted to light or whatever so I just turned off the light in the bathroom and living room, and shut the door! I heard my sister later in the night go in there but idk if she saw it or not. So should I just go to the bathroom or wait till my sis goes in there?!

Crane flies are totally harmless. Don't worry about it.

Q:Is Fireplace Crane a modern term for the swing-out metal arms that hang over a fireplace for cooking? e.g. like in dutch ovens or pots/cauldrons that hang over a fire. It sounds like a more modern term and I need to know if there is an older term. Thanks.

You would mean one in the hearth, yes. An older term may be to call it a Pot Crane or Chimney Crane. That is most common to what you describe that it is affixed to the chimney and swings about. That does not swing, a lug pole might be from a green wood or iron hung above the fire with chain ... or if a Hearth Crane then a standing legged trestle (stands upon the hearth) and hooks affixed ... some with a pot crane attached. But either. You might also refer to it with it's counterpart, the trammel ... as in crane trammel. The trammel is the device hung from the pole or crane to allow the pot to be adjusted up or down depending on the heat required. In some cases the trammel can be just a series of S-hooks linked together, it can also be a chain with hooks, and is often a specific toothed device wrought by smithy. As a child we used hooks and hooks chain, thoe as a man I owned a sawtoothed trammel but hardly used it as I'd obtained a stew stove. My business partner Ebenezer insisted that a toothed saw trammel was frivolous and kept a chain and hook type in his home.

Q:I need a web site for crane documentation. What I need, is a site, where from I can get, when needed, hydraulic and electric schematics for all kind of cranes (crane trucks, bridge cranes, etc)Thank you,

Go to the manufacturer's websites for technical support. Go to the engineering magazine websites that engineers use to design the cranes. Identify the professional engineering organizations that deal with such equipment.

Q:Operation points of tower crane (tower crane)?

Safe use requires the use of tower crane, issued by the state competent authorities shall abide by the rules and regulations, but also comply with the relevant provisions in the manual: the crane working environment temperature is -20~40 degrees Celsius, the maximum working pressure is 205N/m2, when should stop using the winds of more than 6 level; the same construction site to install more than two sets of tower crane when should pay attention to the location of each tower, take the elevation of different operations, in order to avoid the tower crane jib, balance arm collision accidents; safety device of tower crane, luffing and slewing height, mass and moment limiter, the last two more important, if the two is not detected qualified, will be regarded as the unqualified, because it plays a role to ensure the safety and prevent the tilting of the tower crane. As a construction site, the tower crane torque limiter failure or to replace the operating personnel mistakenly believe that daily only hanging 800-1000kg materials, not what the risk, the results in a process of lifting materials, because of the construction site is narrow, hanging by the operator sight blocked, hanging objects hanging on building the steel frame, caused by tower crane shaking, was the occurrence of major accidents, thanks to the ground work riggers promptly notify the operator immediately stop to avoid rollover accident of tower crane appeared. It is obvious that all safety devices on the tower crane are essential and must be checked regularly to ensure that all the safety devices are in good condition, sensitive and reliable.

Q:I give up...Somebody who understands The Decemberists please tell me what a Crane's Wife is and what the song is about. I love the song, I sing along loudly, but I don't have a clue.

I found this on wikipedia. The Crane Wife is an old Japanese tale. While there are many variations of the tale, a common version is that a poor man finds an injured crane on his doorstep (or outside with an arrow in it), takes it in and nurses it back to health. After he releases the crane, a woman appears at his doorstep with whom he falls in love and marries. Because they need money, his wife offers to weave wondrous clothes out of silk that they can sell at the market, but only if he agrees never to watch her making them. They begin to sell them and live a comfortable life, but he soon makes her weave them more and more. Oblivious to his wife's diminishing health, his greed increases. He eventually peeks in to see what she is doing to make the silk she weaves so desirable. He is shocked to discover that at the loom is a crane plucking feathers from her own body and weaving them into the loom. The crane, seeing him, flies away and never returns.