5TH SESSION OF THE INTERNATIONAL COMMITIEE OF EXPERTS
MOSTAR 26, 27, 28 OCTOBER 2000.
AGENDA
Thursday
26. October 2000,
10.00-11.15
Opening of the session, presentation and adoption of the agenda of
the 5th session of the ICE ( Chairman-Professor Leon
Pressouyre).
11.15-12.30
Presentation of the progress of the works and discussion ( Dr. Colin
Kaiser
UNESCO Representative in B&H, Messes. Cisic, Rozic and Pequeux PCU) .
12.30-14.00
Lunch
14.00-16.30
Presentation[1]
of the draft final report on Geological investigations
prepared by Joint
Venture CONEX-Yeralti Aramacilik
16.30-18.00
Discussion by ICE and adoption of the proposed project for
strengthening of the foundation, or additional discussion with the
contractor for better clarification of the project.
20.30
Official dinner organised by Mr. Colin Kaiser, UNESCO
Representative in B&H and Professor Leon Pressouyre, The chairman of
the ICE. (Hotel “ERO”).
Friday,
27. October 2000
09.30-11.30
Presentation[2]
by LGA company, responsible for Laboratory tests on stone, mortar, lead
and iron
-
Presentation of the results of the laboratory tests on the
following ancient and new materials:
a) Old
stone
b) New
stone
c) Analysis
of the old iron and proposal for the new composition of the iron
d) Analyses
of the different types of the mortars find in the structures of the
Old
e) Analysis
of the old lead and proposal for the new composition of the lead
of
the new bridge.
11.30-13.00 Discussion by ICE and adoption of
decisions
tests in the regard to the usage of tested and proposed materials.
13.00-14.30
Lunch
14.30-16.30
Presentation by General Engineering[3]
- Design, Photogrametry and
Presentation consist of the following topics:
a)
the preliminary design for the old bridge which have to be
discussed
by the ICE
b)
preliminary calculations
c)
Other proposals and issues related to the calculation which have to
be
raised and discussed
during the presentation.
16.30-18.00
Discussion by ICE and adoption of the decisions or remarks related
to the preliminary design of the Old Bridge. Only after agreement on phase
A will General Engineering be able to begin with the Phase B of their
assignment.
20.30
Official dinner organised by the Project Coordination Unit ‘ PCU
Saturday, 28. October 2000
10.00-11.30
Discussion on the reuse of the old stone, based on the
presentations made by the LGA and General Engineering[4].
Discussion has to reach agreement the following points:
a)
To use old stone in the structural parts of the bridge or not.
b)
If old stone could be used in the structural parts, in which form:
to be re-cut or
to be put in to the
original position without additional treatment.
c)
For reuse old stone in non structural parts
-To
reuse the old stone in the previous positions if the location can
defined insertion into new location
d)
How to treat old stone
in the new structure.
11.30-13.0
a) Discussion on the process of selection and pre-qualification of the contractors to
be used for the bridge reconstruction.
b) Composition of the Evaluation committee.
13.00-14.30
Lunch
14.30-16.00 Preparation of the decisions and
conclusions of the 5th session
Adoption
of decisions. Proposal for the date for the 6th session .
[1]
After the presentation the contractor (CONEX-YERALTY ARMACILIK)will
leave the meeting room and wait for the eventual second call in order
to clarify some of the questions raised by the members of the ICE .
The Contractor’s team could not consist of more then three persons.
2
After the presentation the contractor (LGA) will leave the meeting
room and wait for the eventual second call in order to clarify some of
the questions raised by the members of the ICE . The Contractor’s
team could not consist of more then three persons.
[3]
After the presentation the contractor (General Engineering) will leave
the meeting room and wait for the eventual second call in order to
clarify some of the questions raised by the members of the ICE . The
Contractor’s team could not consist
of more then three persons.
[4] The above mentioned companies are requested to be present in Mostar on 28 October, in order to respond to possible additional questions and requirements related to reuse of the old stone and other old materials.
Decisions
of the 5th Session of the International Committee
of Experts for the Rebuilding of Stari Most
and the Rehabilitation of the Old Town of Mostar,
26-28 October 2000.
1.
The ICE endorses the revised plan of operations for the project
presented by the PCU and expresses its satisfaction at the implementation of
ongoing activities by the PCU.
2.
The ICE asks the PCU to assure timely and appropriate information for
assignments, including towards embassies in Bosnia and Herzegovina, who will
be asked to publicize the assignments in their countries in order to reach a
reasonable number of companies.
3.
The ICE reiterates the decision of the 4th Session
regarding the drainage system on both riverbanks behind the abutment walls
and also regarding archaeological investigations in the project for the
restoration of the two towers.
4.
The proposals of the joint-venture Yeralti Armacilik-CONEX regarding
the reinforcement of the foundations of the Old Bridge and the consolidation
of soil behind the abutments are adopted and the joint-venture is asked to
correct its final report, which will become the basis for the tender
documentation.
5.
The future contractor for the foundations will be asked to ensure
that no ecologically damaging materials or processes will be used, and he
will be held responsible for any damage to the environment.
6.
LGA is asked to propose only INOX steel for interior dowels and
clamps for the Old Bridge, and forged
iron for visible clamps and the fence that is as similar as possible to the
original materials.
7.
The ICE notes that, according to the laboratory tests the stone from
Mukosa quarry has the same characteristics as the old tenelija stone used in
the Old Bridge. Therefore, the
ICE recommends, after using the maximum quantity of old stone in zones of
lower tension, that the tenelija stone from the Mukosa quarry should be used
on a regular basis according to the specifications established by General
Engineering.
8.
The ICE expresses concern about the suggestions made by LGA
concerning new mortar. The ICE
asks LGA to carry out more complete analysis and investigation of the old
mortars in order to prepare the composition of new mortars that will satisfy
all archaeological requirements. It
must be known if the composition of the old mortars is acceptable from the
viewpoints of statics and durability.
The origin of the colour of red mortar must be clarified, i.e.
whether made of bauxite, ground brick, or natural red earth (terra rossa,
pouzzalana). The
composition of the new mortars must be submitted to the PCU and UNESCO as
soon as possible in order to avoid any delay in the implementation of the
plan of operations.
9.
The ICE suggests that the large blocks of stone still in the Neretva
riverbed, which cannot be reused in the restoration process, should remain
in their present location in the Neretva riverbed as a testimony and
monument to the destruction of the Old Bridge.
At the same time it is suggested that a small significant selection
of blocks located on the platform, and of archaeological interest, should be
preserved in view of museum display.
10.
The ICE asks General Engineering to prepare proposals for the
repair/restoration of the abutment walls against future floods.
The ICE insists that rebuilding the Old Bridge does not imply the
repair of small damage: a proper balance must be found between static
security, durability and visual effect.
11.
Regarding the pavement of the Old Bridge it was decided that all the
old krecnjak stone should be reused and that the remaining parts should be
composed of suitably prepared krecnjak stone in order to attain the same
appearance.
12.
The ICE welcomes again the adoption, on 12 June 2000 by the City of
Mostar of the Rehabilitation Plan, prepared by UNESCO in 1997. Nevertheless it deeply regrets that a management plan based
on the UNESCO plan has still not been prepared for adoption by the City of
Mostar, which unfortunately has facilitated uncontrolled urban development.
13.
The ICE stresses that conservation in Mostar cannot be divided
according to municipal districts and recalls to the City of Mostar the
urgent necessity of preserving the architectural, historical and
environmental values of Mostar as a whole, particularly in connection with
the project for the Old Bridge and the nomination for the World Heritage
List. To this effect
Messers Beschaouch and Pressouryre are requested to prepare a letter for the
signature of the Director-General of UNESCO addressed to the authorities of
the City of Mostar.
14.
The ICE welcomes the recommendation of the PCU that the ICE should
reinforce the technical expertise of the evaluation committee for all
future assignments.
Next
meeting – last week of January or first week of February 2001.