Q:How many tons of tower crane QTZ80A lifting?

Lifting torque = mass * radius of gyration (amplitude). That is to say, the bigger the weight is small.

Q:I ve read about crane flies and many experts say they do not bite nor sting. Ifor that is the case, what is the little piece of their abdomen that looks like a stinger?

ovipositor?

Q:We had a very large tree removed from beside our house. The crane parked in the driveway and caused four very large depressions and crushed concrete.

It all depends on the terms of your policy. Since we don't have the ability to read your policy - we don't know. Your best bet is to ask your agent. Or you can file a claim and let the claims department inspect the damage and determine if it's covered or not.

Q:Because they look a lot alike. Such as if you reinforced the design a little bit will it work?

It might - but the center of gravity and the tripod might not be able to hold the weight of the jib, camera, counter-weights... and personally, I think it would be a pretty expensive mistake to watch my $2,000 camcorder fall and brake because the camera crane collapsed under the weight. A mic tripod is designed to handle about a pound of weight. A consumer camcorder, the jib and counterweights (and maybe a mic or whatever else you throw on there) can be between 5 pounds and 50 pounds. That's why companies like Kessler make what they make. And that's why the companies that makes lesser camera cranes (Cobra, CameraCranes, and others) never use a mic tripod. They use a heavy duty camera tripod or other LARGE, STRONG, item - not a mic stand.

Q:When the earthquake happened, the children wanted to know what they could do to inform other students and raise awareness for the people in Japan. So, we decided to do a show on the earthquake, and to also making the cranes, the origami cranes.thank you! a foreigner. （detail）

I personally would write it as... So, we decided to do a show on the earthquake and to make origami cranes. However, for proper English grammar, your idea of saying to also make the cranes is correct for an addition with and. The sentence fragment ... and to also making the cranes... would not work because also is a interrupter to show continuation and is not a verb. To make is an infinitive so adding also would not allow the conjugation of the infinitive due to the rule that a verb cannot follow a verb unless if the second verb is in an infinitive form. And is never used with commas unless there are items in series such as ducks, chickens, and hens. And is not correct after a comma unless if there are items in series. In addition, the items in series rule can change slightly if there is a description with the items or a sentence fragment such as with the sentence... There are several large hens with an egg; a few with large wings; and a few with a large pile of food. In this situation a semicolon(;) is used to help people know that it is a series with a group of sentence fragments. If you need help contact me or find help with items in series, types of sentences, sentence fragments, and sentence interrupters. I am learning to speak Spanish so I am willing to help anyone with English because I know how difficult it can be to learn English.

Q:How do I get on the cranes on the Highrise map in MW2?

watch that video its the easiest way to learn it and not have someone explain through text and what the hell is that first guy saying??

Q:It got me thinking.

I have not seen the movie, but I think I saw what you're talking about on a preview. I would think that the safeties involved in the control system for a crane would make it highly unlikely to happen. There is no absolute assurance, only probabilities or likelihoods. You just hope that you have enough failsafes in the system so if one part of the system fails, the others will take over, or shut the whole thing down properly.

Q:What type of crane done the lift?what type of object was the crane lifting?what was the weight of the load being lifted?

It is MTC 78000 in offshore industry.It can able to lift nearly 2000 tonnes and is one of the world's biggest slewing cranes.

Q:Tower cranes sometimes have very long booms, but seem to usually have fixed counter-weights at fixed positions behind the cab. Why doesn't it flip backwards when there is no load, or flip forwards when a load is way at the far outward end of the boom? It seems to be a very large range of moment arms given that the counter-weight has a fixed one.

I think the counter weights are connected to a pully system that directly interacts with the boom and hook movement. This way it can put more or less pull on the weights according to the amount of weight or position of the weight on the crane.

Q:how does a crane operator's knowledge of where the centroid is generally located for most uniform objects help them perform their job more safely?

If an object is uniform, it's a fair bet the centre of mass will be at the centre of the shape. If lifting with slings, he will have them placed equidistant from centre, at an angle to each other not exceeding 60 degrees. He will then lift a little, and can tell by the angles from vertical of each sling whether or not the CM is under the centre of the crane cable. If not, he will lower the load, and have someone adjust the sling positions. Having slings equally loaded ensures a level load when lifting, and when a load is level it is a much safer lift than when it tilts one way or the other. A tilt would mean greater force in the sling on the low end. The load could slip out, or the excess force could break the sling.