# INSTRUKTA d.o.o. Sarajevo > We design structures that stand the test of time. We design, review and supervise load-bearing structures – from calculation to the last reinforcement drawing, from foundations to roof. We work in Bosnia and Herzegovina, Croatia and Montenegro. Web: https://instrukta.com/ · E-mail: info@instrukta.ba ## About We were founded in 2020, but our engineers' experience goes back decades – on bridges, high-rise buildings, deep excavations and construction sites. - **2020.** company founded in Sarajevo - **3** locations: Sarajevo, Makarska, Podgorica We do structures – and only structures. We design reinforced concrete, prestressed, composite, steel, timber and geotechnical structures, from the first sketch of the load-bearing system to the last reinforcement drawing. Analysis, BIM model, connection details and construction drawings are produced by the same team, so what reaches the site is exactly what was calculated. We hold licences for design, design review and site supervision in the Federation of Bosnia and Herzegovina, Republika Srpska and Brčko District. Through iNSTRUCTA Makarska d.o.o. we work in Croatia and the wider EU market, and through iNSTRUCTA d.o.o. Podgorica in Montenegro. Our projects stand in Bosnia and Herzegovina, Croatia, Hungary, Germany, Peru, Georgia and the USA. ### Recognition for projects we engineered - **Ivo Andrić Birth House**, Travnik – nominated for the European Union Prize for Contemporary Architecture – Mies van der Rohe Award 2024. Architecture: Ledić Arhitektura / Studio Zec. - **Žarka House**, Jahorina – winner of the BIG SEE Architecture Award 2024 (Ljubljana, Slovenia). Architecture: FO4A Architecture. ### Analysis and design - SOFiSTiK, SCIA Engineer, ProtaStructure, Radimpex Tower - IDEA StatiCa, MecWay FEA - GEO5, Fides DV-Partner ### Modelling and drawings - Autodesk Revit, Allplan, Rhino / VisualARQ, ProtaBIM - AutoCAD, BricsCAD, ProtaDetails - Radimpex ArmCAD and MetalStudio, Advance Steel, ProtaSteel ## Services We work exclusively on the structural part of a project – but we do all of it: structural concept, analysis, construction drawings and supervision on site. ### Building construction Residential, commercial and public buildings from concept to detailed design – in reinforced and prestressed concrete, steel, timber and composite systems. ### Civil engineering Bridges, viaducts and overpasses on motorways, urban roads and railways, and rehabilitation of bridges that have reached the end of their service life. ### Structures Static, dynamic and seismic analysis for structures where a standard solution is not enough: long spans, prestressing, complex details and connections. ### Geotechnics Foundations, excavation support, retaining walls, ground anchors and slope stability – including where the neighbouring building stands right at the edge of the excavation. ### Refurbishment Condition assessment of existing structures and design of repair, strengthening, vertical extensions and changes of use. ### BIM Structural information models in Revit, Allplan and ProtaBIM, coordination with architecture and MEP, and openBIM exchange via IFC. ### Drawings Formwork, reinforcement, post-tensioning and steel shop drawings – drawings the site can build from without further questions. ### Renewables Wind turbine foundations, solar plant substructures and load-capacity checks of roofs for photovoltaic installations. ### Supervision and review Site supervision of structural works and review of other engineers' designs – to the same criteria we apply to our own. ## Projects A selection of designed and completed structures. Click a project to open its description, technical data and further images. ### Buildings #### Residential and commercial complex with congress centre – Marijin Dvor, Sarajevo *B3+G+M+22, outer radius 33 m* - **Status:** Under construction - **Client:** EUROPA d.o.o. Sarajevo - **Architecture:** ARGENTARIA d.o.o. Sarajevo - **Our role:** Structural design - **Software:** Radimpex Tower, FIDES DV-Partner An irregular oval tower and a congress centre with underground car park (B3+G+2, 70.60 × 90.0 m below ground), both cast-in-place reinforced concrete. The key issue was soil–structure interaction with the 8,444 m² excavation support, next to existing buildings and below the groundwater level. The detailed design covers formwork drawings for every floor, reinforcement drawings and special details for connections, movement joints and bearings. ![Residential and commercial complex with congress centre, Marijin Dvor, Sarajevo](https://instrukta.com/img/p/europa.jpg) #### Premier Park residential and commercial building – Marijin Dvor, Sarajevo *B2+G+6+M and roof floor, long-span beam systems* - **Status:** Completed - **Client:** PREMIER INVESTMENT GROUP d.o.o. & MDC d.o.o. Sarajevo - **Architecture:** ARGENTARIA d.o.o. Sarajevo - **Our role:** Structural design and site supervision - **Software:** SOFiSTiK, Autodesk Revit, Radimpex ArmCAD A cast-in-place reinforced concrete structure with continuous beam systems on long-span grids, giving open, flexible space with a minimum of walls and columns. The plan is L-shaped up to ground floor (25.9 × 16.9 m + 55.5 × 20.8 m) and rectangular above, 55.5 × 19.05 m. The global 3D analysis was carried out in SOFiSTiK; the Revit BIM model was used for formwork drawings and coordination with the architects. ![Premier Park residential and commercial building, Marijin Dvor, Sarajevo](https://instrukta.ba/img/gallery/01-visokogradnja/04.PremierPark.jpg) #### Žitopromet residential and commercial complex – Mostar *6 buildings, B2+G+13* - **Status:** Completed - **Client:** INVENTUS d.o.o. Mostar - **Architecture:** ARGENTARIA d.o.o. Sarajevo - **Our role:** Structural design - **Software:** Radimpex Tower, SOFiSTiK (check analysis) Six buildings in three blocks. Blocks A and B (B2+G+13, 56.30 × 20.10 m) are cast-in-place reinforced concrete; the car park is precast, with prestressed hollow-core slabs on precast girders and elastomeric bearings. Consultant for blocks A and B was Prof. Ante Mihanović, PhD, of the Faculty of Civil Engineering in Split. The project was modelled in BIM, with formwork and reinforcement drawings for every floor. ![Žitopromet residential and commercial complex, Mostar](https://instrukta.com/img/p/zitopromet.jpg) #### North Gate Hotel – Mostar *B1+G+5, 117.00 × 47.65 m* - **Status:** Designed - **Client:** BABIĆ d.o.o. Jablanica - **Architecture:** ARGENTARIA d.o.o. Sarajevo - **Our role:** Structural design - **Software:** Radimpex Tower An irregular rectangular hotel, 117.00 × 47.65 m at basement and ground floor and 90.72 × 23.95 m from the first to the fifth floor. A hybrid system: cast-in-place columns, beams and cores carry precast prestressed hollow-core slabs made by the client. The analysis covers the interaction of precast and cast-in-place elements; formwork and reinforcement drawings for the cast-in-place part are coordinated with the erection requirements. ![North Gate Hotel, Mostar](https://instrukta.com/img/p/northgate.jpg) ### Civil engineering #### Circular viaduct on the IX Transversal – Sarajevo *R = 61 m, 16 spans of 11.977 m* - **Status:** Completed - **Client:** Novi Grad Sarajevo Municipality / Sarajevo Canton - **Designer:** HYDRO CONTROL d.o.o. Sarajevo - **Our role:** Structural design and designer's supervision - **Software:** Radimpex Tower, SOFiSTiK A cast-in-place reinforced concrete slab on a circular plan of 61 m radius, monolithically connected to pile-founded columns in 16 bays of 22.5°, with four access ramps and a connection to the IX Transversal overpass. Beneath the viaduct about 4,500 m² of pedestrian space was freed, with 4.70 m clearance. The design was developed in six construction stages without interrupting traffic, including temporary supports and deck warping. ![Circular viaduct on the IX Transversal, Sarajevo](https://instrukta.com/img/p/vijadukt.jpg) #### Bridge 9 on Corridor Vc – Ozimice – Poprikuše section *right bridge L = 497.40 m, piers up to 23 m* - **Status:** Pre-construction - **Client:** JP Autoceste FBiH d.o.o. Mostar - **Commissioned by:** SARAJ INŽENJERING d.o.o. Sarajevo - **Our role:** Detailed structural design - **Software:** SOFiSTiK, GEO5 Left and right bridges over a local road, the Bosna river and a main road, 12.46 m wide. Structure A is a cast-in-place post-tensioned solid slab on circular piers up to 23 m high, on caissons and piles, designed for incremental staged construction. Structure B consists of five precast prestressed T-beams on twin hexagonal piers up to 8 m high; over the main road the span is carried by post-tensioned portal frames. The detailed design includes the complete post-tensioning system. ![Bridge 9 on Corridor Vc, Ozimice – Poprikuše section](https://instrukta.com/img/p/m9.jpg) #### Railway overpass for the Port of Brčko – Brčko *integral structure over three spans* - **Status:** Completed - **Client:** BELISAR d.o.o. Brčko and the Government of Brčko District - **Our role:** Structural design - **Software:** SOFiSTiK A new track next to the existing overpass, over a local road and a main road. An integral reinforced concrete solid slab over three spans, without bearings, on abutments and twin circular piers. The supports are skewed to match the existing structure – pier S3 at 69.6°, abutment U4 at 73.3° – so the analysis looked specifically at the effect of the skew. ![Railway overpass for the Port of Brčko, Brčko](https://instrukta.com/img/p/brcko-1.jpg) #### Overpass at the Nević Polje interchange – Vitez – Travnik expressway *L = 111.00 m, post-tensioned slab* - **Status:** Designed - **Client:** JP Autoceste FBiH d.o.o. Mostar - **Commissioned by:** SARAJ INŽENJERING d.o.o. Sarajevo - **Our role:** Detailed design - **Software:** SOFiSTiK, Radimpex Tower, IDEA StatiCa, GEO5 Left and right overpasses over a roundabout, 111.00 and 110.45 m long. A continuous cast-in-place post-tensioned slab, 9.90 m wide, on deep-founded piers because of poor ground. The tendon profile was optimised for minimum structural mass; seismic actions and dynamic traffic effects were analysed. ![Overpass at the Nević Polje interchange, Vitez – Travnik expressway](https://instrukta.ba/img/gallery/02-niskogradnja/05.Petlja.jpg) ### BIM #### Oaza 2 residential and commercial complex – Mostar *6 buildings, B+G+5* - **Status:** Under construction - **Client:** ARGENTUM d.o.o. Mostar - **Architecture:** ARGENTARIA d.o.o. Sarajevo - **Our role:** Structural design - **Software:** Autodesk Revit, Radimpex Tower Five buildings of equal height surround a car park of about 6,300 m² on an irregular plot. The complex was modelled in Revit as a single reinforced concrete model with movement joints; a mixed system of walls, columns and cores follows the different grids of the buildings. Drawings were generated from the BIM model, and clashes were found and resolved before construction started. ![Oaza 2 residential and commercial complex, Mostar](https://instrukta.com/img/p/oaza.jpg) #### Vraca residential and commercial complex – Istočno Novo Sarajevo *B4+G+4 on a steep slope* - **Status:** Designed - **Client:** RESORT 84 d.o.o. Lukavica - **Our role:** Design of the structure, excavation and retaining structures - **Software:** Autodesk Revit, Radimpex Tower, FIDES DV-Partner, GEO5 Six buildings on hilly ground. The buildings, the excavation support and the retaining structures of the access road were modelled together in Revit with precise spatial positioning; the excavation and retaining structures were analysed separately in FIDES DV-Partner and GEO5. ![Vraca residential and commercial complex, Istočno Novo Sarajevo](https://instrukta.com/img/p/vraca.jpg) #### K11 residential building – Kromolj – Sarajevo *B2+G+3, 41.8 × 16.4 m* - **Status:** Completed - **Client:** VEKTOR-INTEGRA d.o.o. Sarajevo - **Our role:** Designer and coordinator of all three design stages - **Software:** Autodesk Revit, Radimpex Tower, GEO5 A reinforced concrete building with underground parking in a densely built part of the city. The excavation support was critical for the neighbouring buildings, so excavation and concreting stages were analysed step by step. During construction the BIM model was used for quantities and for passing data digitally to site. ![K11 residential building – Kromolj, Sarajevo](https://instrukta.com/img/p/k11.jpg) #### Retirement home – hotel concept – Gornji Vakuf-Uskoplje *B1+G+2, 48.6 × 44.1 m* - **Status:** Designed - **Client:** VIPO PRUGA d.o.o. Gornji Vakuf-Uskoplje - **Architecture:** LEDIĆ ARHITEKTURA d.o.o. Travnik - **Our role:** Structural design - **Software:** Autodesk Revit, Radimpex Tower A care home for older people to hotel standard. The regular grid of the cast-in-place reinforced concrete structure allowed flexible planning and simple BIM coordination; partitions and openings were modelled in detail, with connection details between structural and non-structural elements. ![Retirement home – hotel concept, Gornji Vakuf-Uskoplje](https://instrukta.com/img/p/dom-gv.jpg) ### Public buildings #### City Hall – Zenica City Administration – Zenica *tower B1+G+12, car park 48.8 × 88.8 m* - **Status:** Designed - **Client:** City of Zenica - **Designer:** IPSA INSTITUT d.o.o. Sarajevo - **Our role:** Structural consultant - **Software:** Radimpex Tower, SOFiSTiK, IDEA StatiCa Three parts: the city hall tower (B1+G+12), the public wing (B1+G+2) and the underground car park (B3+G, 48.8 × 88.8 m). The public wing is a post-tensioned concrete structure with long spans and cantilevers; the tower and car park are cast-in-place. A detailed seismic analysis and a check of the ground conditions were carried out. ![City Hall – Zenica City Administration, Zenica](https://instrukta.com/img/p/vijecnica.jpg) #### Mračaj City Stadium – Jajce *reinforced concrete, steel and glulam* - **Status:** Designed - **Client:** Jajce Municipality - **Designer:** IPSA INSTITUT d.o.o. Sarajevo - **Our role:** Structural consultant, main design - **Software:** Autodesk Revit, Radimpex Tower, SOFiSTiK, IDEA StatiCa, GEO5 A stadium with stands, a canopy over the training pitch and a buried car park with a stand. A reinforced concrete frame carries precast terraces; the canopy rests on arched girders of variable section with glulam purlins. Concrete, steel and timber design and the geotechnical analyses were all based on one shared Revit model. ![Mračaj City Stadium, Jajce](https://instrukta.com/img/p/mracaj.jpg) #### Pofalići Primary School – Sarajevo *post-tensioned frames of the sports hall* - **Status:** Pre-construction - **Client:** Novo Sarajevo Municipality - **Designer:** IPSA INSTITUT d.o.o. Sarajevo - **Our role:** Structural consultant - **Software:** Autodesk Revit, Radimpex Tower, SOFiSTiK, IDEA StatiCa, GEO5 The school wing is a reinforced concrete frame with cores; the sports hall is a post-tensioned frame structure for longer spans. Both were modelled in Revit, and tendon layouts were drawn for the frames. ![Pofalići Primary School, Sarajevo](https://instrukta.com/img/p/pofalici.jpg) ### Industrial #### MOL refinery – foundations – Budapest, Hungary *foundations on micropiles* - **Status:** Under construction - **Client:** MOL Hungarian Oil and Gas - **Commissioned by:** TECHNOBELL Ltd. Koper and PETROLINVEST d.d. Sarajevo - **Our role:** Foundation consultant - **Software:** SOFiSTiK, Autodesk Revit, Navisworks, Radimpex ArmCAD Foundations on micropiles for three parts of a new process unit, with anchor blocks for equipment. Foundation–pile–soil interaction was modelled in SOFiSTiK. To import loads from several equipment suppliers we wrote our own program that transfers them to SOFiSTiK automatically, so equipment changes need no manual input. ![MOL refinery – foundations, Budapest, Hungary](https://instrukta.com/img/p/mol-1.jpg) #### Liquid fuel terminals – Mostar *loading bays, filter stations, VRU* - **Status:** Designed - **Client:** Operator-Terminali Federacije d.o.o. Sarajevo - **Commissioned by:** SARAJ INŽENJERING d.o.o. Sarajevo - **Our role:** Client's consultant Detailed design covering repair, reconstruction and new build: loading bays, canopies, filter stations and vapour recovery units. Scope: steel skids and frames, reinforced concrete foundations, slabs and retaining walls, and connections for process equipment, with shop drawings. ![Liquid fuel terminals, Mostar](https://instrukta.com/img/p/terminali.jpg) #### Kreis office building – Sarajevo *composite mezzanine in an existing hall* - **Status:** Completed (phase 2) - **Client:** KREIS BH d.o.o. Sarajevo - **Commissioned by:** GLASFASER CONNECT BH d.o.o. Ilidža - **Our role:** Structural design - **Software:** Radimpex Tower, SOFiSTiK, IDEA StatiCa A 48.25 × 31.5 m reinforced concrete hall on 10–13 m grids, designed to be built in three phases. In phase two a new mezzanine was inserted at half of the 7.45 m ground-floor clear height: a composite slab on steel beams bearing on concrete columns strengthened with steel jackets – without demolishing any of the existing structure. Creep, shrinkage and load redistribution were analysed. ![Kreis office building, Sarajevo](https://instrukta.com/img/p/kreis.jpg) ### Reconstruction #### Ivo Andrić Birth House – Travnik *nominated for the EU Mies van der Rohe Award 2024* - **Status:** Completed - **Client:** Travnik Local History Museum - **Architecture:** LEDIĆ ARHITEKTURA d.o.o. Travnik (Amir Vuk Zec and Josip Ledić) - **Our role:** Structural design Repair, adaptation and reconstruction on the principle of minimal intervention: existing elements were kept wherever possible. A visually discreet steel structure was introduced on the ground floor to carry the upper storey, the foundations were strengthened, and the timber roof was restored and largely replaced with glulam beams on a concealed steel substructure. Every connection between old and new was designed individually. ![Ivo Andrić Birth House, Travnik](https://instrukta.com/img/p/andric-1.jpg) #### Reconstruction of the bridge over the Bioštica – Olovo, Tuzla – Sarajevo main road *built 1957, L ≈ 73.40 m* - **Status:** Completed - **Client:** JP Ceste FBiH d.o.o. Sarajevo - **Our role:** Reconstruction design A continuous girder bridge of variable depth over three spans. A new reinforced concrete deck slab with cantilevers was made composite with the old concrete, the pendulum piers were strengthened with carbon fabric, and the bearings and equipment replaced. The check analysis of original and reconstructed states includes long-term effects; the works were carried out under traffic in two phases. ![Reconstruction of the bridge over the Bioštica, Olovo, Tuzla – Sarajevo main road](https://instrukta.ba/img/gallery/05-rekonstrukcije/01.Olovo.jpg) #### Lifting the roof slab of an aparthotel – Makarska *9 jacks, ≈ 250 t, five days* - **Status:** Completed - **Our role:** Lifting method statement and supervision - **Execution:** IMK Sarajevo For a change of use, the 20 cm roof slab, about 250 t including finishes, was separated from its columns and beams and lifted by nine synchronised hydraulic jacks in steps defined to the millimetre. The work was completed in five days despite bora and sirocco winds and minor earthquakes in the wider area. ![Lifting the roof slab of an aparthotel, Makarska](https://instrukta.com/img/p/ploca.jpg) #### Sultan Ahmed Islamic Centre – Zenica *new steel arched roof structure* - **Status:** Completed - **Client:** Islamic Community Council Zenica - **Our role:** Structural design - **Software:** Radimpex Tower, SCIA Engineer, ProtaSteel, Radimpex ArmCAD Extension, reconstruction, repair and adaptation of two existing reinforced concrete blocks. A new steel arched roof was placed over the opening in block A, the reading-room gallery hangs from ties on the concrete beams, and the existing concrete walkway was widened and enclosed with steel to form a terrace. ![Sultan Ahmed Islamic Centre, Zenica](https://instrukta.com/img/p/islamski-1.jpg) ### Repair #### Zenica rolling mill – halls 1 and 2 – ArcelorMittal Zenica *137.7 × 61.2 m, laser-scanned* - **Status:** Designed - **Commissioned by:** SARAJ INŽENJERING d.o.o. Sarajevo - **Our role:** Condition assessment and repair design - **Software:** Autodesk Revit, Radimpex Tower, SCIA Engineer, GEO5, IDEA StatiCa A 1964 steel hall with a crane runway at 9.5 m and worn-out corrosion protection. The structure was laser-scanned, a Revit model was built from the point cloud, followed by a check analysis and a repair plan: replacing and strengthening members, checking connections and new protection. ![Zenica rolling mill – halls 1 and 2, ArcelorMittal Zenica](https://instrukta.com/img/p/valjaonica-1.jpg) #### Skenderija plaza – phase II – Sarajevo *Nilcon floor replaced, 10 m grid* - **Status:** Designed - **Client:** KJP Centar Skenderija d.o.o. Sarajevo - **Our role:** Repair design - **Software:** SOFiSTiK, IDEA StatiCa A 1970s structure with deteriorated precast Nilcon elements and no bracing in the second direction. Instead of strengthening, the floor was replaced with prestressed hollow-core slabs and a structural topping, steel bracing was added for seismic forces, and the beams were strengthened with carbon plates. ![Skenderija plaza – phase II, Sarajevo](https://instrukta.ba/img/gallery/05-rekonstrukcije/02.Skenderija.jpg) #### Repair of the bridge over the Suha – Stupari, Tuzla – Sarajevo main road *Gerber hinge, works under traffic* - **Status:** Completed - **Client:** JP Ceste FBiH d.o.o. Sarajevo - **Our role:** Repair and strengthening design Check analysis of the existing bridge including the Gerber hinge, a new reinforced concrete deck slab with cantilevers acting compositely with the old one, concrete jackets on abutments and piers, and new equipment. All works were carried out under traffic, in stages. ![Repair of the bridge over the Suha, Stupari, Tuzla – Sarajevo main road](https://instrukta.ba/img/gallery/02-niskogradnja/04.Suha.jpg) ### Geotechnics #### Excavation support for the congress centre – Marijin Dvor, Sarajevo *≈ 130 × 72 m, ≈ 12 m deep* - **Status:** Completed - **Our role:** Excavation support design for the contractor - **Software:** FIDES DV-Partner, GEO5, Radimpex Tower An excavation of about 8,500 m² between the Technical School and the Holiday hotel. A ring of reinforced concrete bored piles with a capping beam, shorter transverse piles acting as counterforts, and next to existing buildings a strut formed by a floor slab that becomes part of the congress centre structure. ![Excavation support for the congress centre, Marijin Dvor, Sarajevo](https://instrukta.com/img/p/jama-md.jpg) #### Geotechnical structures on Corridor Vc – Ozimice – Poprikuše section, Žepče *≈ 1.5 km of geotechnical structures* - **Status:** Pre-construction - **Client:** JP Autoceste FBiH d.o.o. Mostar - **Commissioned by:** SARAJ INŽENJERING d.o.o. Sarajevo - **Our role:** Designer of the geotechnical structures - **Software:** GEO5, Radimpex Tower About 1.2 km of cutting slope protection, a third of it anchored reinforced concrete grillage walls; the same system, over about 80 m, secures the tunnel portals. In addition about 160 m of retaining walls and about 105 m of reinforced embankment on a piled slab. Design in GEO5, with the spatial behaviour of the grillages and piled foundations checked in a 3D model. ![Geotechnical structures on Corridor Vc, Ozimice – Poprikuše section, Žepče](https://instrukta.ba/img/gallery/06-geotehnika/01.Autocesta.jpg) #### Site works – Roof Gardens – Trebević, Sarajevo *slope, micropiles, gabions* - **Status:** Completed - **Client:** ROOF GARDENS d.o.o. Sarajevo - **Our role:** Structural design and designer's supervision Five parts on a steep slope: gabion facing at the entrance, a reinforced concrete slab on micropiles carrying parking, retaining walls for the fire and service road, a three-level structure, and a fire access road with a bridge around the complex. ![Site works – Roof Gardens, Trebević, Sarajevo](https://instrukta.com/img/p/roof-vu.jpg) ### Renewables #### Wind turbine foundations – Peru and Georgia *soil liquefaction, standardised foundations* - **Status:** Under construction - **Commissioned by:** WINDTHINK, Istanbul / SARAJ INŽENJERING d.o.o. - **Our role:** Consultant, foundation design - **Software:** SOFiSTiK, GEO5, Radimpex ArmCAD Foundations for a wind farm in Peru, where soil liquefaction was the key issue, and for the Chero and Pirveli wind farms in Georgia, with standardised spread and piled foundations for different sites and ground conditions. ![Wind turbine foundations, Peru and Georgia](https://instrukta.com/img/p/vjetro.jpg) #### Car park canopies with MASS Solar 1 PV plant (800 kW) – Sarajevo International Airport *5.40 m column grid* - **Status:** Designed - **Client:** Sarajevo International Airport - **Consortium:** Enerdyne d.o.o., Bosna-S d.o.o., INSTRUKTA d.o.o. - **Our role:** Structural design Steel canopies over the car park with photovoltaic panels on the roof. The 5.40 m column grid leaves two parking spaces between columns; roof pitches are 6° and 10°, on pad foundations. ![Car park canopies with MASS Solar 1 PV plant (800 kW), Sarajevo International Airport](https://instrukta.com/img/p/aerodrom.jpg) #### FEAL solar panel supports – Široki Brijeg *standard supports for series production* - **Status:** Completed - **Commissioned by:** FEAL d.o.o. Široki Brijeg - **Our role:** Optimisation and design Optimisation of the standard foundation and design of the primary and secondary panel supports for series production. ![FEAL solar panel supports, Široki Brijeg](https://instrukta.com/img/p/feal.jpg) ### Special structures #### Kakanj power plant chimney, h = 300 m – Kakanj *expert opinion and repair proposal* - **Status:** Completed - **Commissioned by:** SARAJ INŽENJERING d.o.o. Sarajevo - **Our role:** Expert opinion - **Software:** SOFiSTiK Assessment of a 300 m reinforced concrete chimney and a repair proposal: comparative analysis of existing and repaired states, including stresses and the installed reinforcement in foundation and shaft. ![Kakanj power plant chimney, h = 300 m, Kakanj](https://instrukta.com/img/p/dimnjak.jpg) #### King Tomislav Memorial Centre – King Tomislav Square, Livno *30 m cantilevers over a 50 m staircase* - **Status:** Concept design - **Architecture:** LEDIĆ ARHITEKTURA d.o.o. Travnik (author Josip Ledić) - **Our role:** Structural design A complex set into the hillside, with a central square, amphitheatre, gallery and a coronation memorial room. Structural concept: giant 30 m cantilevers emerge from the ground and carry the mass that overhangs a monumental 50 m staircase, so the covered stair doubles as seating. Material: fair-faced concrete with an embossed, enlarged interlace motif. ![King Tomislav Memorial Centre, King Tomislav Square, Livno](https://instrukta.com/img/p/tomislav-1.jpg) ### Supervision #### Roof Gardens residential and commercial building – Trebević, Sarajevo *site supervision, RC structure* - **Status:** Completed - **Our role:** Site supervision of the reinforced concrete structure Site supervision of the reinforced concrete structure of a residential and commercial building on Trebević. ![Roof Gardens residential and commercial building, Trebević, Sarajevo](https://instrukta.ba/img/gallery/09-nadzor/01.RoofGardens.jpg) #### Premier Park residential and commercial building – Marijin Dvor, Sarajevo *site supervision, RC structure* - **Status:** Completed - **Our role:** Site supervision of the reinforced concrete structure Site supervision of the reinforced concrete structure of a building for which we also produced the structural design. ![Premier Park residential and commercial building, Marijin Dvor, Sarajevo](https://instrukta.ba/img/gallery/09-nadzor/02.PremierPark.jpg) #### Apartment buildings – Bjelašnica and Jahorina *designer's and site supervision* - **Status:** Completed - **Our role:** Supervision of structural works Designer's and site supervision on a series of smaller apartment buildings on Bjelašnica and Jahorina. ![Apartment buildings, Bjelašnica and Jahorina](https://instrukta.ba/img/gallery/09-nadzor/03.bjelasnica.jpg) ### Croatia #### Biograd na Moru Hospital – Biograd na Moru, Croatia *hospital extension* - **Partner:** TOBIS inženjering d.o.o. Zadar - **Our role:** Structural design, iNSTRUCTA Makarska d.o.o. Structural design of the hospital extension, produced for a partner from Zadar. ![Biograd na Moru Hospital, Biograd na Moru, Croatia](https://instrukta.com/img/p/biograd.jpg) #### Baška Voda Hotel – Baška Voda, Croatia *hotel building* - **Partner:** ARGENTARIA d.o.o. Makarska - **Our role:** Structural design Structural design of a hotel on the Makarska Riviera. ![Baška Voda Hotel, Baška Voda, Croatia](https://instrukta.com/img/p/baska.jpg) #### Residential buildings, Živogošće – Živogošće, Croatia *residential buildings* - **Partner:** ARGENTARIA d.o.o. Makarska - **Our role:** Structural design Structural design of residential buildings on the Makarska Riviera. ![Residential buildings, Živogošće, Živogošće, Croatia](https://instrukta.com/img/p/zivogosce.jpg) #### Villas, Sukošan – Sukošan, Croatia *villas* - **Partner:** ARGENTARIA d.o.o. Makarska - **Our role:** Structural design Structural design of residential villas near Zadar. ![Villas, Sukošan, Sukošan, Croatia](https://instrukta.com/img/p/sukosani.jpg) ### Competitions #### Bridge across Kaštela Bay – Split, Croatia *extradosed bridge, ≈ 1.6 km, navigation clearance 200 × 55 m* - **Status:** Competition entry - **Team:** Joint team with colleagues from 3 Konstrukcije d.o.o., Zadar - **Software:** SOFiSTiK, Autodesk Revit Competition entry for a landmark gateway to the Split region: an extradosed bridge with a hybrid steel–concrete box girder, carried in the main span by stay cables over pylons. The brief required a general arrangement, pier sections, a preliminary analysis, a BIM model, visualisations, posters and a video. ![Bridge across Kaštela Bay, Split, Croatia](https://instrukta.com/img/p/kastela-1.jpg) ### Houses and villas #### Houses and villas – BiH and Croatia *a selection of smaller buildings* - **Our role:** Structural design A selection of smaller houses with unusual geometry: cantilevers, large openings, steep roofs and buildings on steep ground. ![Houses and villas, BiH and Croatia](https://instrukta.com/img/p/vila-1.jpg) ## Licensed software All tools we use for analysis, modelling and drawing production are licensed. Autodesk, Bricscad, Rhino, Allplan, Sofistik, Scia, Idea, MecWay, Prota, Radimpex, Geo5, Fides ## Drawings The drawing is what finally reaches the site. Formwork plans, reinforcement drawings, tendon layouts and shop drawings are produced by the same team that does the analysis. ### Formwork plans From the BIM model in Revit, Allplan or ProtaBIM, finished in AutoCAD, for all structure types. ### Reinforcement drawings Radimpex ArmCAD on AutoCAD and BricsCAD, ProtaDetails at the client's request, and 3D reinforcement in Allplan. ### Tendon layouts Geometry of prestressing tendons, with the stressing sequence and conditions for each construction stage. ### Shop drawings ProtaSteel, Advance Steel, Radimpex MetalStudio and Allplan Profilbauteile. ## Development iNSTRUKTA SI – Structural Intelligence. A digital chain that takes a structure from formwork plan to finished drawing, with Eurocode checks at every step. Formwork plan (DWG) → BIM model (Revit) → Analysis (SOFiSTiK) → Reinforcement (to EN 1992) → Drawings (for construction) Developed in our own practice, and used there. https://instrukta.si ## Contact Our office is open from 9:00 to 17:00. For an enquiry, an email with a short description of the building and the project stage is enough. - **Address:** Vilsonovo šetalište 10, 71000 Sarajevo, Bosnia and Herzegovina - **Email:** info@instrukta.ba - **Managing director:** +387 33 877-422 - **Technical office:** +387 33 644-623 - **Mobile:** +387 61 222-521 - **Fax:** +387 33 877-429 ## Related companies - **Bosnia and Herzegovina:** iNSTRUKTA d.o.o. Sarajevo, Vilsonovo šetalište 10, 71000 Sarajevo, [instrukta.ba](https://instrukta.ba/) - **Croatia:** iNSTRUCTA Makarska d.o.o., Kipara Rendića 4, 21300 Makarska, [instructa.hr](https://instructa.hr/) - **Montenegro:** iNSTRUCTA d.o.o. Podgorica, Vojina Katnića 14C, 81000 Podgorica, [instructa.me](https://instructa.me/) ## Language versions - Bosanski: https://instrukta.ba/ - Hrvatski: https://instructa.hr/ - Crna Gora: https://instructa.me/ - English: https://instrukta.com/ - Deutsch: https://instrukta.de/