Cum adica? Necula asta a proiectat prost cladirea si acum o critica ca
nefiind buna?
Sau critica este "motivata" pentru ca a pierdut licitatia?
Dan G
Vali Nas wrote:
On 9/25/07, dand <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>> wrote:
[...] In orice caz, blocurile noi sunt proiectate pentru cutremur
asa ca ideea ca se prabuseste peste catedrala suna cam a "drob de
sare in capul copilului"
Dan G
Eu nu sunt specialist, deci nu pot sa ma pronunt in cunostinta de
cauza. Din ce am citit insa in scrisoarea din 12 martie 2007 adresata
Presedintelui PE de catre ing. Emanuel Necula am inteles ca riscul
exista si este foarte mare.
Va reamintesc ca ing. Necula este un specialist, este inginer de
structura, si este cel care in anii 2004 si 2005 a asigurat, prin
firma proprie de consultanta, servicii de project management si
construction management dezvoltatorului proiectului "Cathedral Plaza",
pana la finalizarea licitatiei internationale si depunerea partii de
structura a proiectului. Nu am sa mai insist aici asupra aspectelor
penale ce deriva din falsificarea de catre organizatori a desenelor si
documentatiei pregatite de firma d-lui Necula, recurgerea la fals si
incalcarea legii drepturilor de autor fiind probabil necesare pentru
obtinerea autorizatiilor si aprobarilor in vederea demararii
constructiei.
Va invit totusi sa studiati scrisoarea d-lui ing. Necula (
http://euro-fam.org/documents/partaged/pub2007/Actions/architectecathedralebucaresten.pdf
<http://euro-fam.org/documents/partaged/pub2007/Actions/architectecathedralebucaresten.pdf>),
in special pag. 3-4 (si inceputul pag. 5), unde sunt prezentate in
detaliu motivele de risc seismic. Astfel, o serie de studii nu au
fost niciodata realizate de catre constructor:
A. The "on site" seismic tests to determine the subsoil seismic
characteristics, especially the frequency of ground motion. Severe
damages can occur if the frequency of the ground motion matches the
natural vibration frequencies of the structures, the shaking response
of the structures being enhanced by the phenomenon called resonance.
[...]
B. [...] The very unstable subsoil conditions were never properly
investigated to ascertain their full impact on the stability of the
new tower foundation system and its impact to the surrounding properties.
C. An improper estimation of the differential settlements within the
property of the new project as well as for the surrounding properties,
have under evaluated the structural effects of these settlements to
the new tower infrastructure and superstructure and the existing
structures, including the Complex of St Joseph Cathedral. [...]
D. There was no structural evaluation of the Complex of St. Joseph
Cathedral. [...] The existing building structures surrounding the new
tower, built with heavy un-reinforced thick masonry walls will not
resist shock waves or large settlements caused by the new tower.
E. A wind tunnel analysis to determine the dynamic effects of the
tower to the surrounding structures, including the re-distribution of
ground snow at the level of the existing lower roofs, was omitted. [...]
F. There was no tridimensional seismic analysis of the new tower
structure taking into account the interaction between the tower
infrastructure (foundation walls, basement slabs, mat foundation,
slurry walls, and piles) and the effect of the multidirectional active
and passive pressures against the surrounding soils supporting the
existing buildings in the close proximity of the tower, caused by
multidirectional sways that occur during a major earthquake. [...]
Am prezentat (foarte pe scurt) fragmente din motivele invocate in
scrisoarea ing. Necula, dar sfatuiesc pe cei interesati sa citeasca
textul complet.
Asa cum am spus, eu nu sunt specialist, deci pot (si trebuie) doar sa
ma bazez pe opiniile profesionistilor. Din cate am inteles din
scrisoarea respectiva, dl. ing. Necula este un astfel de profesionist.
Cu siguranta, sunt pe acest grup persoane avizate si cu pregatirea
corespunzatoare care pot confirma sau infirma seriozitatea motivelor
invocate in scrisoare.
----------------------------
Vali
"Noble blood is an accident of fortune; noble actions are the chief
mark of greatness." (Carlo Goldoni)
"When the power of love overcomes the love of power, the world will
know peace." (Jimi Hendrix)
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