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Originally posted by Harte
The Romans certainly did have cranes. Huge cranes. Many, many of them in fact.
If somebody was foolish enough to decide to build that way today, it would be incumbent on them to arrange to have some such cranes cobbled together.
However, if you look into it, you'll see that the quarry at Baalbek is actually at a higher elevation than the temple so the stones were never "lifted" there in the first place.
Regarding the pieces that make the gigantic columns, the stone carving of these pieces is far more impressive than the mere lifting into place of these pieces.
Originally posted by bsbray11
Originally posted by Harte
The Romans certainly did have cranes. Huge cranes. Many, many of them in fact.
Capable of lifting what kinds of loads? This is something new to me.
The simplest Roman crane, the Trispastos, consisted of a single-beam jib, a winch, a rope, and a block containing three pulleys. Having thus a mechanical advantage of 3:1, it has been calculated that a single man working the winch could raise 150 kg (3 pulleys x 50 kg = 150), assuming that 50 kg represent the maximum effort a man can exert over a longer time period. Heavier crane types featured five pulleys (Pentaspastos) or, in case of the largest one, a set of three by five pulleys (Polyspastos) and came with two, three or four masts, depending on the maximum load. The Polyspastos, when worked by four men at both sides of the winch, could already lift 3000 kg (3 ropes x 5 pulleys x 4 men x 50 kg = 3000 kg). In case the winch was replaced by a treadwheel, the maximum load even doubled to 6000 kg at only half the crew, since the treadwheel possesses a much bigger mechanical advantage due to its larger diameter. This meant that, in comparison to the construction of the Egyptian Pyramids, where about 50 men were needed to move a 2.5 ton stone block up the ramp (50 kg per person), the lifting capability of the Roman Polyspastos proved to be 60 times higher (3000 kg per person).
Originally posted by merka
The wiki link also mention even larger Roman crane systems for more weight.
They probably built a crane system specific to the site to raise it.
read the 12th planet by Zecharia Sitchin,
Originally posted by TheWalkingFox
*Sigh*
Better yet, read one of any number of accredited works by actual professionals in the field, of which there are thousands, and leave Sitchin in the airport bookstore.
I'm beginning to wonder if people get paid to plug his books around here...
Originally posted by TheWalkingFox
reply to post by Bornofosiris
read the 12th planet by Zecharia Sitchin,
*Sigh*
Better yet, read one of any number of accredited works by actual professionals in the field, of which there are thousands, and leave Sitchin in the airport bookstore.
I'm beginning to wonder if people get paid to plug his books around here...
Originally posted by OoTopNotchoO
and they also used balloons made of cement
Originally posted by Bornofosiris
... they called 'eris nibiri' or 'Plane of crossing' as we all know now as Eris, this is a massive planet with a 3600 year retrograde orbit around the sun.
Originally posted by OoTopNotchoO
reply to post by merka
Perhaps some cement balloons out in the Pacific could be found. I read they were painted with many different colors. Wonder if any got past South America that maybe Columbus thought was a UFO as it could have caught fire. Don't ask me how they made the cement balloons , thats almost as difficult for me to answer as would be building pyramids.
Originally posted by merka
Originally posted by OoTopNotchoO
and they also used balloons made of cement
LOL, that I'd like to see!!!
The landing sequence must have been tough. A 1000+ ton (or more like 10,000 ton?) cement ballon collapsing over you got to hurt.