Aca Devnya Hisory

ARCHITECTURE &CONSTRUCTION AGENCY

Bulgaria, 9000 Varna1, ILARION MAKARIOPOLSKI Str., Fl. 2, Tel./Fax: +359 52 687555, +359 52 687 556

e-mail: [email protected]

The Architecture&Construction Agency (ACA) has been founded as a private company in 1993 with a separate department for design of steel and reinforced concrete structures. During the last years ACA took active part in the technological modernization of the cement industry in Bulgaria.

Various customers and investors have chosen ACA to design industrial and civil structures including unique industrial facilities. The Agency is renowned for its quality design, strict dead lines keeping and flexibility when design modifications do need to occur. The design process is entirely computerized and uses up-to-date technology. ACA design team has an expert level in using specialized software such as ArchiCAD for architectural drawings, AutoCad for detailed and workshop drawings, SAP2000 for static, dynamic and earthquake analysis of structures.

When contracted ACA performs full engineering of industrial facilities.

ACA OFFERS ITS CUSTOMERS:m Pre-design investigation, expertise, consulting services, advice

on legal matters related to the design, construction and reconstruction of each particular project;Expert evaluation of the condition of existing structures and facilities;Preparation of contract drawings and bidding documentation;

m Complex design and approval of the project.Preparation of basic design drawings, engineering calculations and reports presented for approval by the customer and the State AuthoritiesWorkshop and detailed drawings, engineering calculations and reports presented for approval by the customer and the State Authorities including Independent Monitoring Agency;

m Author's Control during erection and construction including preparation of 'Executive/As-Built' documentation with all modifications occurred at site

m Additional services as preparation of an estimate based on the design documentation, project construction time schedule, project business plan, project coordination till plant start-up, etc.

ARCHITECTURE&CONSTRUCTION AGENCY

ACA CONSULTS ITS CUSTOMERS ON: m Legal matters related to the design, construction and

reconstruction m Local code related to the design of each particular projectm Structural, constructional and technological matters related to

the industrial sectorm New and traditional materialsm Specialized software

ACA DESIGNS INDUSTRIAL FACILITIES SUCH AS: m Steel and reinforced concrete industrial facilities and structuresm Steel silos, hoppers, bins, reservoirs, ducts

ACA DESIGN TEAM m ACA has a team of highly qualified full-time engineers and

draftsmen well experienced with modern computer technology and software packages such as ArchiCAD, AutoCAD, SAP 2000;

m ACA works in close relationship with renowned companies from the construction and industrial sectors including steel fabrication and erection firms;

m ACA extends its team of engineers with young university graduates with excellent academic background and promising career start

Address for information and correspondence:Architecture&Construction Agency, Engineering DepartmentBulgaria, 9000 Varna1, ILARION MAKARIOPOLSKI str., Fl. 2Tel./Fax: +359 52 687 555, +359 52 687 556 Contact name: Georgi Vitanov

+359 52 630 898, +359 52 630 899 e-mail: [email protected]


6400 Димитровгpag 6400 DimitrovgradБългария Bulgariameл. 0391 23421 Tel +359 391 23421фakc 0391 23512 Fax +359 391 23512

REFERENCE

To Whom It May Concern

Architecture&Construction Agency Ltd. (ACA) has been chosen by ItalCementi Group toperform full engineering services on the Coal Mill Project in the Vulkan Cement Plant,Dimitrovgrad, Bulgaria. The total of 9 months design and construction duration time for theproject began in March 2000 and finished in December 2000 with installation start-up. The newCoal Mill Facility is now used to supply Kilns 3&4 with grounded mixture of coal and cokeinstead of the expensive natural gas.ACA in cooperation with TAI (Italian engineering company that supplied basic design for theproject) and CTG (Engineering Department of ItalCementi Group that approved all drawingsduring design) prepared and supplied the following documentation:− civil works foundations (engineering calculations, reports and detailed drawings)

− steel supporting structures (engineering calculations, reports and detailed drawings)

− ducts, chutes, compensators (engineering calculations, reports and detailed drawings)

− coal dust silo (engineering calculations, reports and detailed drawings)

− steel structure covering the coal mill, cladding with corrugated steel sheets, stairways,galleries for belt conveyors, service platforms, etc. (engineering calculations, reports anddetailed drawings)

− steel doors (detailed drawings)− authorization of the electrical installation documentation (project drawings and reports

supplied by and in cooperation with the Italian Company Seit)For this particular project ACA engineering team used software packages such as ArchiCad forarchitectural drawings, AutoCad 2000 for detailed and workshop drawings, MATHCAD forcalculation reports, SAP 2000 for modeling and static, dynamic and earthquake engineeringcalculations based on FEM, etc. The final documentation was supplied by ACA as a hard copyand computer files.

Peгucmpupaно в Okpъжeн Съg - Xackoвo Registered in Haskovo District Courtnog фирмено geло N° 39/1990 under Company Pile No.39/1990Данъчен N» 1260000485 Tax registration No.1260000485BУЛCTAT 836145646 Ю BULSTAT 836145646 Ю

ВулканVulkanItalcementi Group

ACA team of young and highly qualified Civil and Structural Engineers (all university graduates)managed to supply in short terms an excellent Job on a unique for the Bulgarian Industry coal mminstalfation. During the design development of the project substantial restrictions appeared due tothe fact that some new equipment had to be placed inside an old existing building increasingheavily the job complexity. During the whole contract and duration of the project ACA engineersprovided reiable services in the field of the Industrial Civil and Structural engineering as well asWorkshop Detailing. All ItalCementi project requirements and deadlines were kept within narrowlimits ACA engineering department took full advantage of the modem IT and computerSology thus being able to send, receive and process massive number of computer drawingsper day. ACA easily achieved a high quality end product, which was initial compulsoryrequirement by ItalCementi for granting the full engineering service contract. Personally wasvery impressed by the professionalism of ACA engineers in their everyday contact with theirCTG, TAI and Seit colleagues. The result was cost effective coordination and quick approval ofdrawings.I do consider ACA engineering team as very experienced and professional in the area of industrialconstruction and modernization and have the pleasure to sign this recommendation addressing itto any Bulgarian or foreign investor.

P. Grancharov, M.Sc.Modernization and Reconstruction Project Manager

Sincerely Yours,

9160 Девня 9160 DevnyaПромишлена зона Industrial ZoneБългария Bulgariameл. 0519 2420 Tel +359 519 2420meл. 052 691484 Tel +359 52 691484фakc 0519 3214 Fax +359 519 3214

REFERENCE

To Whom It May Concern

Architecture&Construction Agency Ltd. (ACA) received its first contract with DevnyaCement in 1997 to perform engineering and structural services on the project 'Coal MillFacility for Kilns 5&6'. This facility in operation since 1999 supplies Kilns 5&6 withgrounded mixture of coal and coke instead of the expensive natural gas.ACA in cooperation with Loesche GmbH (German manufacturer and supplier of thecoal mill unit) prepared and supplied the following documentation:− civil works foundations (engineering calculations, reports and detailed drawings)

− steel supporting structures (engineering calculations, reports and detailed drawings)

− ducts, chutes, compensators (engineering calculations, reports and detailed drawings)

The next contracts awarded by Devnya Cement to ACA in cooperation with ChristianPfeiffer (Austrian manufacturer and supplier of grinding equipment) were forengineering services for the reconstruction of Cement Mills 3&2&1 with modificationfrom open to closed technological cycle (filters, separators and related equipment).Cement Mill 3 project ended in 1998, Cement Mill 2 project ended in 1999 and CementMill 1 project is planned for year 2002. ACA supplied workshop drawings for allrelevant steel supporting structures and service platforms.In 2000 Christian Pfeiffer (supplier of the new equipment for Cement Mills 3&2&1)together with ItalCementi Group contracted ACA to perform an earthquake analysis ofthe existing cement mill building and to estimate the influence of the new structures andloads on the building. A detailed model of the building was created. The earthquakeanalysis proved that certain structural elements of the existing cement mill buildingneeded modification and reinforcement due to new substantially greater dead and serviceloads. ACA engineering department prepared detailed drawings for the reinforcement.The project was finished at the end of 2000.For the contracts mentioned above ACA engineering team used software packages suchas ArchiCad for architectural drawings, AutoCad 2000 for detailed and workshopdrawings, MATHCAD for calculation reports, SAP 2000 for modeling and static,dynamic and earthquake engineering calculations based on FEM, etc. The finaldocumentation was supplied by ACA as a hard copy and computer files.

Peгucmpupaно 6 Окръжен Съд -- Bapнa Registered in Varna District Courtnog фupмeно geло №4997/1993 under Company File No.4997/1993Данъчен N» 1038008192 Tax registration No.1038008192BУЛCTAT 8131098330 BULSTAT 8131098330

Девня ЦиментDevnya CementItalcementi Group

ACA team of young and highly qualified engineers (all university graduates) provedtheir ability to offer in short terms high quality engineering solutions to the complexdemands for modernization and reconstruction in the Bulgarian cement industry in thelate 90's. During the design development of the projects supervised by me allrequirements and deadlines were kept within narrow limits.The high quality end product that ACA persistently achieved would be a great advantageto any organization especially if cost effective coordination and quick approval ofdrawings is needed.I do consider ACA engineering team as very experienced and professional in the area ofindustrial construction and modernization and have the pleasure to sign thisrecommendation addressing it to any Bulgarian or foreign investor.

Sincerely Yours,

P. Grancharov,

M.ScModernization and Reconstruction Project Manager

Christian PfeifferSystems and components

REFERENCE

Christian Pfeiffer started to work with Architecture&Construction

Agency in 1998 on the cement mill No. 3 modernization project located

at the Devnya Cement Plant, Varna, Bulgaria. The deadline for the

project was 6 months, a very short time for such reconstruction. The job

consisted of partial modification of the main structure of the cement mill

building and an addition of a new structure for our equipment. Based on

our technological flowsheet and preliminary drawings ACA engineering

team in short time managed to produce quality workshop and detailed

documentation for fabrication and erection purposes.

After the initial successful business relationship in 1998 during the

next two years Christian Pfeiffer and ACA managed to modernize and

reconstruct also Cement Mill No. 2 and part of Cement Mill No. 1.

Due to new and substantially greater dead and service loads on

the cement mill building an earthquake survey and structural

modification for strengthening of the existing building was necessary.

ACA received an order and its team accomplished the job in less than

three months. The final documentation consisted of a very detailed

earthquake analysis and workshop drawings for steel structure

modifications.

It was a pleasure for us to work with ACA young and ambitious

engineering team during the past three years. I would also recommend

ACA as a reliable partner for engineering services to any eventual investor in

the Bulgarian Industry or abroad.


Coal Dust Silo SteelSupporting StructureVulkan Cement Plant,Dimitrovgrad, BulgariaOperational January, 2001

Steel Supporting Structures

Steel Structures coveringMachines and Equipment

Warehouses Steel Structureswith Unlimited Dimensions

Steel StructuresFoundations

Heavy Duty EquipmentFoundations

Reinforced ConcreteFacilities(Reservoirs, Hoppers,Bins, etc.)

Civil Structures

Coal Mill FoundationVulkan Cement Plant,Dimitrovgrad, BulgariaOperational January, 2001


Raw Materials Steel Silos

Steel Reservoirsfor Water and Fuel

High and Low PressureSteel Vessels

Coal Dust Silo Vulkan Cement Plant,Dimitrovgrad, BulgariaOperational December, 2000


Steel Structures forBelt Conveyor Galleries

3D Truss Steel Structures

Belt Conveyor Gallery, Coal Supply to Grinding Unit Vulkan Cement Plant,Dimitrovgrad, BulgariaOperational December, 2000


Calculation Model forFloating Facilities

Belt Conveyors

Chain Conveyors

Roller Conveyors

Static&Dynamic&EarthquakeAnalysis of all kinds of Steel Structures

Mobile Steel Structures

Driving&Driven Mechanisms



Hot/ColdHigh/Low Pressure Gas Ducts

PneumaticalTransportationDucts

Duct from Hot Gas Generator to Coal Mill Vulkan Cement Plant,Dimitrovgrad, BulgariaOperational December, 2000

Feeding Duct from Coal Dust Siloto Kilns 3&4 Vulkan Cement Plant,Dimitrovgrad, BulgariaOperational December, 2000

Aca Devnya Hisory

Technology

design of steel

design documentation

design modifications

complex design

quality design

months design

drawingsduring design

design process