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    TECHNICAL SURVEYS AND DIAGNOSTICS OF STRUCTURES

    ACCREDITED LABORATORY OF KI

    LOADING TESTS ON BRIDGES

    OTHER PROJECTS

    ROOFING OF MAIN RAILWAY STATION HALL IN PRAGUE
    Realization: 2013
    Client: SUDOP PRAHA, a.s.

    The diagnosis of lower closed column parts of riveted steel structure of the roofing of the Main Railway Station Hall in Prague was performed as a part of the reconstruction project. The roofing was constructed by the S. Bondy, bridge-factory Prague-Bubnyin 1901.Within diagnostic works the visual inspection of inner surfaces and diagonal braces of closed column parts was performed. Then an extensive set of measurements of corrosive loss of steel elements, including the sizes and dimensions of cross sections of columns, was performed. The samples of steel were taken as well. The tensile tests, weld-ability tests, including tensile and bending tests of weld joints, and microscopic analysis were performed. The result of the diagnostic works was the base for the quality evaluation of these steel structure componentsfrom the point of corrosion, the determination of the strength class and the steel weld ability.

    2013-Zastreseni_haly_zst_Praha_hl._n



    NÁVAROV CHATEAU
    Realization: 2013
    Client: Mrs.RadkaTurková

    The subject of this set of technical surveys was several buildings in the Návarov Chateau compound (chateau, landlord house, corn-loft, stable, barn, gazebo and farming house).The exploration works were mainly focused on the assessment of wood structures from the point of view of wood-decaying attacks and the masonry structures from the point of view of dampness and salt penetration. Foundations of some structures, including the assessment of load capacity of soils, were also the subject of the survey works.

    2013-ZAMEK_NAVAROV



    SUPREME COURT HOUSE IN PRAGUE
    Realization: 2013
    Client: AED Project, a.s.

    The subject of works was the assessment of technical states of 831 wooden windows due to their planned replacement. Within the technical survey a visual inspection of windows, an assessment of coatings and wood state, a fixing of window frames in jambs, a leaking of precipitations into interiors, a functionality of window frames and opening mechanisms and a rough evaluation of windows from the point of view of thermal insulation were done. The assessment of the technical state of windows, that was one of the project bases for the window replacing, was the result of this survey.

    2013-Budova_vrchniho_soudu_v_Praze



    CENTRAL BUILDING OF FORMER ELECTRIC ENTERPRISES OF CAPITAL CITY PRAGUE
    Realization: 2013
    Client: Tichý & Kolářová, s.r.o.

    The original ceramic facing of the facade of the building mentioned above that was built in 1930-34 and from 1958 entered in the Culture Heritage list was the aim of this extensive set of the diagnostic works. Within diagnosis works the condition of the facing was detailed mapped and the composition of the facade that was assessed in thermal viewpoint, was determined. Thereafter the in-situ tests and the extensive set of the laboratory tests on the facing were carried out. The gripping of the facing to the base, the elastic modulus, the tensile strength, the bending strength, the frost resistance test supplemented with the test by ultrasound impulse, the porosity, the free porosity, the thermal movement, the moisture absorption, the microscopic analysis of the glost ware and the glazing, the resistance to sudden changes of temperature. On the basis of the results of the diagnostic works and the laboratory tests the current condition of the ceramic facing was assessed, the residual durability was determined and the proposals and recommendations were formulated.

    2013_BUDOVA_EL._PODNIKU_HL._M._PRAHY



    ROOFING OF MAIN STATION PLATFORMS IN PILSNER
    Realization: 2012 – 2013
    Client: SUDOP PRAHA, a.s., IKP Consulting Engineers, s.r.o.

    In connection with the rebuilding of the roofing of the platforms in the Main railway station in Pilsner a diagnosis of the cast-iron and steel structures of the roofing of some platforms was carried out. The aim of this work was to find out the basic dimensions and the corrosion condition of the steel structure, an assessment of the state of the cast-iron columns, finding out the thicknesses of the walls of the cast-iron columns, an assessment of the mechanical properties of steel and cast-iron, finding out the way of the anchoring of the roofing into the masonry buildings and an assessment of the condition of the wooden under-coating.

    2012-2013_HLAVNI_NADRAZI_PLZEN



    SHOOTING RANGE IN LIBEREC
    Realization: 2012
    Client: Studio Anarchitekt, s.r.o.

    The aim of this technical survey of the Shooting Range built in empire style and entered on the Culture heritage list was to find out the strength and the moistness of the masonry, a structural solution of the modern in-buildings and an appraisal of the wooden ceilings and the rafters. Further work was focused on the foundations and the foundation conditions and last but not least on the mapping of the underground tunnels in the area of the shooting range.

    2012_STRELNICE_V_LIBERCI



    BUILDINGS AT ORCHARD OF BENEDICTINE MONASTERY IN BROUMOV
    Realization: 2012
    Client: ADR, s.r.o.

    In connection with a planned reconstruction of the buildings at the orchard of the Benedictine monastery in Broumov a technical survey of the waterworks tower, the central house, the house of an administrator, the shed and the parts of the perimeter walls around the orchard was carried out. The explorative work was focused on finding out the strength and the moistness of the masonry, the condition of the roof covering of same buildings and a foundation condition of the perimeter wall. A geotechnical survey for an assessment of the current soils in connection with the planned construction of roads in the orchard was carried out.

    2012_KLASTER_V_BROUMOVE



    VIKTORIE PILSNER SPORTS CENTRE AT STRUNCOVY ORCHARDS
    Realization: 2012
    Client: PPAA, s.r.o.

    In connection with the reconstruction of the Football Sports Centre at the Struncovy Orchards in Pilsner a diagnosis of the structure of the grandstand made from reinforced concrete was carried out. The main aim of the diagnosis was particularly to find out the dimensions, the concrete strength and way of the reinforcement of the structural elements, including design characteristics and a corrosion state of the reinforcement.

    2012_STADION_VE_STRUNCOVYCH_SADECH



    CHURCH OF THE MOST SACRED HEART OF OUR LORD IN PRAGUE
    Realization: 2011
    Client: GeoTec – GS, a.s.

    A diagnostic investigation and an assessment of the technical condition of the church structures were performed in connection with the planned construction of underground parking garages in Jiriho z Podebrad Square. The diagnostic investigation dealt mainly with the dimensions and the material of the load-bearing structures, including their mechanical properties. The results of the investigation were compared with available historical documentation. On the basis of the results and the data that was collected, a structural analysis of the church was made, including an assessment of the impact of the planned construction work on the church.

    2011-KOSTEL_JIRIHO_Z_PODEBRAD



    MIRROR MAZE IN PRAGUE – PETRIN
    Realization: 2011
    Client: B.B.D., s.r.o.

    The aim of the study was to assess the condition of the wooden building constructed in 1981 as the pavilion of the Club of Czech Tourists, in the area of the Industrial Palace at Holesovice, where the Jubilee Exhibition had taken place. Two years later, the building was removed to the Petrin Gardens. In the course of the diagnostic work, the composition of the enclosing shell and the roof were revealed, including the dimensions and the condition of the steel structure above the dioramic view of the Conquest of the Old Town by the Swedes.

    2011-BLUDISTE



    PRUNEROV II POWER STATION
    Realization: 2008 – 2010
    Client: ŠKODA PRAHA Invest, s.r.o.

    Within the Prunerov II Power Station general rehabilitation project, an extensive set of technical surveys, diagnostic work and structural analyses were performed at the Klokner Institute. The surveys covered more than 30 buildings of various types, the most significant being the boiler plant, the generator hall, the cooling towers, the coal supply system, and the ensemble of water treatment buildings. The final output was an assessment of the structures and buildings with regard to their service life and reliability until 2040, together with proposals for reconstructing them, including an estimation of the costs for reconstruction.

    OLYMPUS DIGITAL CAMERA

    OLYMPUS DIGITAL CAMERA



    THE PRINTING-HOUSE BUILDING IN NA PORICI STREET IN PRAGUE
    Realization: 2010
    Client: NEMEC POLAK, s.r.o.

    An extensive survey of the reinforced concrete skeleton with complementary load-bearing masonry structures focused on detecting the structural system and the pattern of the reinforcement bars (including the steel corrosion) of the concrete elements, identifying the materials and their mechanical properties, the moistness of the masonry, and the composition of the floor structures.

    2010-TYPOGRAFIE



    THE WALTER INDUSTRIAL AREA IN PRAGUE – JINONICE
    Realization: 2010
    Client: Cigler Marani Architects, a.s., Pembroke Jinonice, a.s.

    A structural diagnosis of three buildings in the Walter Industrial area in Prague was carried out. Three load-bearing structures formed reinforced concrete skeletons with complementary masonry walls. The diagnostic works focused on detecting the pattern of the reinforcement bars of the concrete elements, the mechanical properties of the concrete and of the reinforcement bars, and determining the strength and the moistness of the masonry.

    OLYMPUS DIGITAL CAMERA

    OLYMPUS DIGITAL CAMERA



    ICE MAKING PLANT IN PRAGUE – BRANIK
    Realization: 2009
    Client: ATLANTE Invest, s.r.o.

    The ice-making plant, a late art nouveau monument in the industrial zone in Branik, was the subject of an extensive study. The study focused on the reinforced concrete structures of the main ice-storage room with brick and stone masonry outer walls and a brick masonry building around it. The survey of the main ice-storage room, approximately 14 metres in clear height and with outer walls up to 2 metres in thickness, focused on detecting the structural system and the pattern of the reinforcement bars (including the steel corrosion) of the concrete elements, identifying the materials and their mechanical properties (concrete, masonry, stone), and the foundations. The masonry and wooden structures and the foundations of the brick masonry building were assessed.

    2009-LEDARNY



    PRAZDROJ BREWERY IN PILSEN
    Realization: 2009
    Client: Plzeňský Prazdroj, a.s., Tebodin Czech Republic, s.r.o.

    Several reinforced concrete structures were the subject of two technical surveys at the Pilsner Prazdroj Brewery. Mechanical tests on the concrete and the reinforcement bars were carried out, and an analysis was made of the concrete due to the suspicion that aluminous cement had been used.

    2009-PIVOVAR_PRAZDROJ



    KAJETANKA HOMESTEAD IN PRAGUE
    Realization: 2006 – 2009
    Clients: D. A. Management, Loxia, a.s., Bozner, s.r.o.

    Several technical surveys and diagnostic works were carried out on the structures of the two main homestead buildings, i.e. the castle and the orangery, then on the retaining walls, a masonry wall and a small house next to the main entrance. The survey focused on the mechanical properties of the building materials, the wooden structures and the foundations. Static assessments of the retaining walls were also performed.

    2006-2009-USEDLOST_KAJETANKA



    VRANY CASTLE
    Realization: 2009
    Client: SATER – PROJEKT, s.r.o.

    The survey of a rococo castle in the Kladno district focused on the condition of the wooden floor structures and the roof framing, the mechanical properties of the masonry, including the arches, the moisture impacting the masonry, and the penetration of salts. During the works, many structural adaptations were dated. A radon survey was also performed.

    2009-ZAMEK_VRANY



    EMBASSY OF THE CZECH REPUBLIC IN RUSSIA
    Realization: 2008
    Client: Ministry of Foreign Affairs of the Czech Republic

    A set of technical surveys and diagnostic works were carried out on the three main buildings of the Embassy of the Czech Republic in Moscow (two residential buildings, one representative building) and on other secondary technical buildings, roads, sewer inlets, collectors, public lighting, etc. Assessments were made of building structures, technical distribution systems e.g. piping, heating, wiring, etc., and various pieces of technical equipment.

    2008-ZU_CR_V_MOSKVE



    QUEEN ANNE’S SUMMER PALACE IN THE PRAGUE CASTLE AREA
    Realization: 2006 – 2007
    Client: Prague Castle Administration

    This extensive technical survey of Queen Anne’s Summer Palace focused on the upper terrace above the arcades. The survey dealt mainly with the structure of the terrace, the mechanical and physical properties of the building materials, and recommendations and proposals for the subsequent reconstruction, including consultations during the reconstruction work.

    2006-2007-LETOHRADEK_KRAL._ANNY



    THE CSOB BANK BUILDING IN NA PRIKOPE STREET IN PRAGUE
    Realization: 2007
    Client: D a M, s.r.o.

    An extensive survey of the reinforced concrete skeleton of the CSOB bank building focused on detecting the structural system and the pattern of the reinforcement bars (including the steel corrosion) of the concrete elements, identifying the materials and their mechanical properties (concrete, masonry), identifying the composition of the floor structures and obtaining basic information about the foundations. The survey was mostly carried out at weekends and at night, so as not to disturb the operation of the bank. To indicate the scale of the work, more than 130 destructive drill-hole probes were executed.

    2007-CSOB_PRIKOPY



    THE PLECNIK FOOTBRIDGE AND THE PACCASI GATE CHAMBER AT PRAGUE CASTLE
    Realization: 2006
    Client: Prague Castle Administration

    The survey focused on mapping and assessing the overall condition of the footbridge, with reference to the moistness of the masonry, and the condition of the drainage elements and the waterproofing. The plastering, drainage and new waterproofing of the footbridge were designed on the basis of the survey, together with reconstruction of the adjacent courtyard and rehabilitation of the walls and the floor structure of the Paccasi gate chamber.

    2006-PLECNIKOVA_LAVKA



    FLORENC SUBWAY STATION IN PRAGUE
    Realization: 2005
    Client: GeoTec – GS, a.s.

    Within the framework of flood protection measures for the Prague subway after the devastating floods in 2002, an extensive and detailed study was made of the structures of Florenc metro station. The vertical and horizontal structures were diagnosed, and valuable knowledge was gained about how the construction work had really been carried out (including extensive results of material tests and experiments, which formed the basis for the subsequent construction project). Within the diagnostic work, a load test of the vestibule floor structure was also performed.

    2005-METRO_FLORENC

    DETERMINING THESTRENGTH INTHE JOINTBETWEENGEO-GRILLES AND KB-KLOK SYSTEM CONCRETE ELEMENTS
    Realization: 2008
    Client: KB – BLOK SYSTÉM, s.r.o.

    On the basis of acontract,tests were performed onsets of smooth natural GEOSTONE – FLAT concrete elements with KB-GRID (E’GRID) 65R, KB-GRID (E’GRID) 90R, KB-GRID (E’GRID) 130Rgeo-grilles, to determine the strength inthe jointbetween the geo-grilles and the concrete elements according to the ASTM D 6638-01standard.



    DETERMINING THESHEAR STRENGTHINTHE BED JOINTBETWEEN KB-BLOK SYSTEM CONCRETEELEMENTS ANDINSERTED ANCHOR GEO-GRILLES
    Realization: 2008
    Client: KB – BLOK SYSTÉM, s.r.o.

    On the basis of a contract,tests were performed on sets of smooth natural of GEOSTONE – FLATconcrete elements with inserted Miragrid5XT 65/25-30 and Tensar 80RE anchor geo-grilles to the determine THE usable and limit shear strength in the bed joint according to the ASTM D 6916-03standard.



    LOADING MECHANICAL TESTS OF PROFILED SHEET METALS CB PROFILE150/280 1.25 S320
    Realization: 2008
    Client: CB PROFIL a.s.

    On the basis of a contract, mechanical loading tests were performed pmCB PROFIL 150/280 1,25 S320 steel profiled sheet metals in a tripleexperiment–1) as a continuous girder with two spans, 2)at the innersupport, and 3)at the end support, according to the ČSN EN 1993-1-3 standard.



    STATIC TESTS ONPORO¬THERM 44 CB MASONRYAND POROTHERM 44 ½ K BRICKS BASED ON POROTHERM 30 CB AND POROTHERM 30 ½ CB BRICKS IN ORDER TO DETERMINE THE CHARACTERISTIC COMPRESSIVE STRENGTH OF THE MASONRY
    Realization: 2008
    Client: Wienerberger cihlářský průmysl, a. s.

    On the basis of a contract, loading tests were performed to determine the characteristic compressive strength of POROTHERM 44 CB bricks based on POROTHERM CB mortar for thin joints and founded on POROTHERM 30 CB bricks bricked and layered on to POR-THERM CB founding mortar according to theČSN EN 1052-1 standard.



    DETERMINING THE SHEER STRENGTH IN THE BEDJOINTBETWEEN KB-BLOK CONCRETE ELEMENTS ANDINSERTED ANCHOR GEO-GRILLES
    Realization: 2009
    Client: KB – BLOK SYSTÉM, s.r.o.

    On the basis of a contract, tests were performed on sets ofsmooth natural GEOSTONE – miniFLATconcrete elements with Miragrid 5XT 65/25-30 andTensar 40REinserted anchor geo-grilles in order to determine the useable and limit shear strength in the bed joint according to the ASTM D 6916-03 standard.



    TESTS ON KB-BLOK SHAPED CONCRETE BRICKSIN ORDER TO DETERMINETHE INITIAL SHEAR STRENGTH AND THE COMPRESSIVE STRENGTH OF THE MASONRY
    Realization: 2009
    Client: KB – BLOK SYSTÉM, s.r.o.

    On basis of acontract, testswere performed to determine the initial shear strength and the compressive strength of KB 1-15A and KB 1-20Amasonryaccording to ČSN EN 1052-3 and related standards.



    MECHANICAL LOADING TESTS ON PROFILED METAL SHEETS WITH CB PROFILE 135/310 0.75 S320, 160/250 0.75 S320 A 160/250 1.25 S320
    Realization: 2009
    Cient: CB PROFIL a.s.

    On the basis of a contract, mechanical loading tests were performed on CB PROFIL 135/310 0.75 S320, 160/250 0.75 S320 and 160/250 1.25 S320profiled metal sheets in a triple experiment: 1) as a continuous girder with two spans, 2.at the innersupport, and 3.at the end support, according to the ČSN EN 1993-1-3 standard.



    TESTS ON THE LOAD CAPACITY OF MASONRY MADE FROM PORFIX P2-420, PORFIX P2-500 AERATED CONCRETE AND PORFIX P4-580 SHAPED BRICKS, IN ORDER TO DETERMINE THE COMPRESSIVE STRENGTH OF THE MASONRY
    Realization: 2010
    Client: PORFIX CZ a.s.



    On the basis of a contract,load capacity tests were peformed on PORFIX P2-420 shaped bricks 375 mm in thickness, PORFIX P2-500 shaped bricks 300 mm in thickness,and PORFIX P4-580 shaped bricks 300 mm in thickness, made from aerated concrete, according to ČSN EN 1052-1 and related standards,in order to determine the characteristic compressive strength of the masonry.



    DETERMININGTHE STRENGTH IN THE JOINT BETWEEN GEO-GRILLES AND KB-BLOK CONCRETE ELEMENTS, AND DETERMINING THE SHEAR STRENGTH IN THE BED JOINT BETWEEN KB-BLOK CONCRETE ELEMENTS ANDTHEINSERTED ANCHOR GEO-GRILL
    Realization: 2010
    Client: KB – BLOK SYSTÉM, s.r.o.

    On the basis of a contract, tests were performed on sets of GEOZIQZAQ BLOK and GEOGARDEN STONE concrete elements with 5XT 65/25-30 geo-grilles to determine the strength in the joint between the geo-grilles and the concrete elements, and to determine the shear strength in the bed joint according to the ASTM D 6638-01 and ASTM D 6916-03 standards.



    TESTS ON FACADE AND ROOF ANCHORS
    Realization: 2010
    Client: SIPRAL a.s.

    A widerangeoftestswereperformedonsteelfaçade and roofanchors and anchornodes.Elongationtestswereperformed on theanchorsatvariousangles.



    TESTS ON GLASS-CEMENT FACADE ELEMENTS
    Realization: 2010
    Client: SIPRAL a.s.

    Static tests were performed on glass-cement façade elements with various types of steel anchors (sprinkled or additionallyassembled anchors) with three types of loading – axial loading, axial and cross loading, loading to break. Six potentiometricdisplacement sensors and force sensors were used.

    The laboratory of the Klokner Institute performs static loading tests on railway bridge structures and other bridges according to ČSN 73 6209 – Loading tests on bridges. In the static tests, a comparison is made between the elastic components of the bending of the main load bearing structure and the theoretical values. The values for the permanent deformations that are identified are also specified.

    • STATIC LOADING TEST ON A BRIDGE, HORNÍ MOŠTĚNICE,REALIZATION: 2006, CLIENT: BÖGL & KRÝSL, K.S.
    • STATIC LOADING TEST ON A BRIDGE, REALIZATION: 2007, CLIENT: HRUŠOV, PSVS A.S.
    • STATIC LOADING TEST ON THE BRIDGE OVER THE D47, REALIZATION: 2007, CLIENT: BÖGL & KRÝSL, K.S.
    • STATIC LOADING TEST ON ANNÍN BRIDGE, REALIZATION: 2007, CLIENT: JHP MOSTY, S.R.O.
    • STATIC LOADING TEST OF A BRIDGE, REALIZATION: 2008, CLIENT: OSTROV N. OHŘÍ, SSŽ A.S.
    • STATIC LOADING TEST ON BRIDGESO 6223, REALIZATION: 2008, CLIENT: BÍLOVEC, SKANSKA A.S.
    • STATIC LOADING TEST ON THE BRIDGE OVER THE LOUČSKÝ BROOK VALLEY, REALIZATION: 2009, CLIENT: SMP CZ, A.S.
    • STATIC LOADING TEST ON ARAILWAY BRIDGE, REALIZATION: 2009, CLIENT: ČESKÉ VELENICE, VIAMONT DSP S.R.O.
    • STATIC LOADING TEST ON ZBIROH RAILWAY BRIDGE, REALIZATION: 2010, CLIENT: VIAMONT DSP S.R.O., 2010
    • STATIC LOADING TEST ON A FOOTBRIDGE IN PRACHATICE, REALIZATION: 2010, CLIENT: STRABAG, A.S.

    LONG-TERM MONITORING OF STRUCTURES AND STRUCTURAL ELEMENTS

     

    • Installation of optic-fiber extensometers on the surface of a concrete structure,SOKP SO 514, Realization: 2009
    • Installation of optic-fiber extensometers before concreting, SOKP SO 514, Realization: 2009
    • Measurements of changes in the widthof cracks in the concrete of an administrative building, Realization: 2010
    • Installation of optic-fiber extensometers into thin-walled beams made from UHPS, Realization: 2010, Client: SKANSKA a.s., Prefa Tovačov
    • Long-term monitoring of cracks on the support of a bridge structure, Realization: 2010