The upper part C gets bigger! LOL! OK, topic is The Heiwa Challenge - very popular - and you suggest that there is a structure, where, dropping little part C on big part A, part C gets bigger ... while one-way crushing down part A. All due to gravity alone?
Anyway, just prove it!
Heiwa, you are completely wrong. You assume one solid mass from above hits one solid mass below, like
Gage's demonstration of one cardboard box bouncing off a larger cardboard box below, or your ship bouncing off another ship.
At this point I ignore the rest of your explication since your math describes the wrong model.
To understand the basic concepts and do the complex math one needs to analyze building chaotic failure ,
an education in civil/structural engineering is mandatory. You can't pick it up from the web or be a
naval engineer.
Bazant is convincing, not only because he is one of the top civil/structural engineers in the world, but
also because his analysis has stood the test of time from his peers. For a naval engineer I'm surprised at how enormously wrong you are. Run your ideas through a civil/structural
engineer to see what he says before you post, really. It would improve your arguments.
WTC Collapse Sequence
1. The initial failure was the columns collapse as evidenced by video (not exploded).
http://tinyurl.com/oqzfjz
2. The columns below were not crushed. The floors collapsed inside the columns when the floor above it
crushed the floor below it. Evidence of video and photographs show uncrushed column assemblies upright
at the base, and the "spire" center core columns that remained upright for 20 seconds after the floors
assemblies swept past them, proving the columns were not crushed from the weight or impact from the
columns above and the cores were not CD'ed.
http://tinyurl.com/op5a9f
3. After the floors pancaked at the rate of 9-10 floors per second, the exterior columns (36 foot long
,three column, three story bolted at base plates ) became excessively laterally unbraced,too slender and
the columns buckled at the bolted connections and toppled. Try balancing one stick at the end of another
stick. At 80 floors the columns were 960 feet high, WTC7 was 300 feet away.
The columns were not horizontally ejected by any force, they toppled. Bracing is a
well understood condition in structural engineering.
4. Whereas each floor only supported its own weight, (100# / SF, DL+LL) each column supported the
weight of ALL the floors above it in addition to the roof loads and lateral tension, compression, shear
wind loads.The floor assemblies were DL light, meant to carry only a live load of 50#/sf, the floor above
it weighing 100#/sf fell 12 feet atop it. This caused the secondary, global failure.
5. The WTCs were built with lightweight, fire vulnerable (high surface area to steel weight ratio)
truss joists instead of solid beams, light weight concrete floors (110 #/ sf vs 150 # / sf regular
weight), sprayed steel fire resistant insulation instead of plaster, tile ,concrete, and all gyp board
core walls (Shaftwall was invented for this job) instead of concrete fire rated walls. The Empire State
Building weighs 38 #/ Cu Ft, The WTC weighed 8 - 9# /Cu Ft. Cork weighs 10 #/ cu Ft. The WTCs were
light, fire vulnerable long span web joist floor system buildings.
http://tinyurl.com/ojzuwt