ILLOGICAL DESIGN
POOR CETERUS PARIBUM
OUTCOME VARIABLE NOT WELL DETERMINED
DESIGN- 30
MEANS – WRONG FORMULAE- 10
SAMPLE SIZE- NOT DETERMINED – 0
GRAMMAR- 10
EXPERIMENTAL DESİGN
Problem:Nowadays bridges are flimsy? and we try to find the best bridge.
Previous art:Old bridges show weaknes to resonance.Some bridges collapse for
this reason.
Gap:There are a lot of bridges on the world but in Turkey works limited top
building bridges.
Objective:improve the works and try to build bridge which is strongest one.
HypothisesSPELLING:
a) My hypothesis is that a cable-stayed bridge will support more mass than a
similar built suspension bridge. SUPPORTED MASS IS NOT SAME AS
RESONNANCE
b)NULL HYP Suspension bridge can support more mass than cable stayed
bridges.
ENGINEERING CONSTRAINTS
Desired functions:My bridge must be flimsy????, cheap,longSPACING
life,useful,wide,carry more weight.QUANTITATE THESE
Design criteria:It should be harmonic with environment.It must be high
because some ships and boats must be passed under the bridges easily.
Material selection:steel ropes,iron chain,support beams,conrete,asphalt,two
main colums.
METHODOLOGY
Manufacturing:Firstly two main colums established.Then steel ropes attached
and part of roads placed with crane.After that found the support beams.Then
poured the asphalt.
Performance test:In the tests 400 vehicle are going on the bridge at the same
time easily.If you sevice it regelarly it can be used for 175 years.Normally we
quaranteed that for 110 years.It is durable to 10 beufort(wind resistant).This
bridge carry 1600 tons.
STATISTICAL ANALYSIS
I compare with 200 bridgesWHERE DID YOU FIND 200 BRIDGES? each two
groups.First one is consist fo cable stayed bridges.Second one consist of
suspension bridges.
Ceterus paribum:General effect are similar on the places such as weather,
resistance.Only differrence is type of bridges.
My cable stayed bridges held 1600 +-32 tons.Then suspension bridges average
900+-27 tons. DID THEY COLLAPSE ABOVE THAT WEIGHT?
((99*2+99*3)/198)=1.58 WRONG
T=(1600-900)/1.58*0.14=3.16
T=3.16
SAMPLE SIZE?
RESULTS
For experimental group my mean is 1600 for control group my mean is 900.
Standart deviations:experimental group:2 control group:3
Comparison of the means show on the statistical analysis.this is 1.58
Conclusion:This experiment show that suspension bridges carry less mass than
cable stayed bridges.To sum up cable stayed bridges are more durable than
suspension bridges.