Goran Alpsten has been commissioned to perform a formal investigation of the causes for a collapse of a steel structure during erection of concrete slab elements for a building at Kista Galleria i Stockholm (Client Kista Galleria KB).
Read more (link to web site of Kista Galleria)  »

StBK have been engaged in a major project, Stockholm Waterfront in the very center of Stockholm, overlooking the famous City Hall building. The project includes an office building, a hotel building and a congress building (Clients Fastighetsaktiebolaget Bangardsposten, and 43 Hotel and Congress AB).

Goran Alpsten performs formal inspection of steel frames in new Office Buildings for SonyEricsson, Lund (Client Vasakronan AB).

Formal warranty inspection of steel frame for new Central building at Arlanda airport. StBK has previously performed inspection and quality audits of the steel frames of many structures at Arlanda, such as new terminal building Pier F, renovation of Pier D and E for adjustment to Schengen requirements, Terminal 2 and 3, Sky City, hangar and office buildings (Client Luftfartsverket).

StBK has performed a status inspection with measurements of dimensions of heavily corroded steel beams encased in a concrete deck under the inner yard of a housing block from 1910 in central Stockholm (Client BRF Eldaren nr 9).

Expert inspection of steel structures in DFDS Terminal buildings at Orebro and Malmo, Sweden (Client KPC Bygg AB).

Expert inspection of the steel structures in Kista Science Tower, Stockholm, the tallest office building in Sweden (Client NCC).

Inspection of the steel structures in the rebuilding projects "Gravlingen" and "Stuten" in central Stockholm with complete renovation and adding more floors on top of the existing buildings (Clients Skanska and Konkret/Drott).

Checking and formal inspection of steel structures of a major Arlanda airport project, including new Central building and Piers D, E and F (Client LFV).

Status investigation of steel structures on top of the Vasa Museum in Stockholm, symbolizing the rig and sails of the Vasa ship from 1628. Status investigations in the Vasa Museum have also included steel structures in walkways and bridges in the ship hall (Client Statens Fastighetsverk).

Contract inspections and warranty inspections of steel framework in buildings in several projects, such as Mitthogskolan, Ostersund; old Saab factory in Malmo; steel chimney at Norrkoping; sport arenas at Huddinge and Ekero (Clients Vasallen AB, Diligentia AB, FHP, and others).

StBK performs yearly inspections of vital steel structures in the grand-stand building "Kongressen" at the Solvalla Trotting-Track in Stockholm. The inspection items include tension rods connected to pylons carrying the structure (Client Stockholms Travsallskap).

Client inspection during fabrication and erection of steel structures in World Culture Museum, Goteborg (Client Statens Fastighetsverk).

Client inspection of steel structures in residential blocks, Kv Klabben, Hammarby Sjostad, Stockholm (Client Prefabutveckling).

StBK performs inspection of steel frames comprising about 800 tons of steel in a new school complex in Oslo, Norway. The assignment includes follow-up of the self-control and spot checking of the steel structures, including 3.77 m high truss beams spanning 55 m over an indoor stadium (Client Peab AS, Oslo).

Goran Alpsten carries out inspection of steel structures i a bridge at Barkarby, a highway bridge from 1932 (Client Ramboll Svenska AB)

StBK has performed formal inspection of steel structures in a highway bridge over E4 at Upplands Vasby (Client Sweco/ Vagverket)

StBK performs client inspection at fabrication and erection of steel structures for a new overhead service platform spanning 60 m in Stockholm Globe Arena. StBK performed inspection also for the original complete Stockholm Globe Arena project (Client Hifab).

Goran Alpsten performs formal inspection of steel structures for a new roof to cover 4,000 sqm of pedestrian walkways in the Vallingby Center west of Stockholm (Client Svenska Bostader).

StBK performs inspection of steel structures for a new art exhibition hall and offices at Bonnierhuset in central Stockholm (Client ebab).

Goran Alpsten performs formal pre-inspection of steel structures in new walls for noise reduction at highway bridges B708 and B1905 vid Rotebro. This is part of the same major contract as the arch bridge over E4 at Upplands Vasby, se photo above (Client Sweco/Swedish National Highway Administration).

Goran Alpsten performs formal inspection of steel frames in rebuilding of office and commercial buildings in Vallingby Center west of Stockholm (Client Svenska Bostader)

Goran Alpsten has performed a recent audit at Hexa-Metal Kft, a structural steel fabricator in Balmazujvaros in eastern Hungary. This is part of a program for regular audits at the workshop in order to verify that Swedish rules for execution and inspection are applied in the fabrication of structural steel components for the Swedish market (Client Prefabutveckling).

Goran Alpsten has participated in a delegation from Skanska AB for assessment of two structural steel fabricators in Serbia for a planned fabrication of steel structures for a large industrial project in Sweden (Client Skanska AB).

StBK has performed contract inspections and warranty inspections of a number of steel bridges, such as six railway bridges at Karlstad and Kristinehamn, Sweden, railway bridge over Raan at Helsingborg, highway bridge over E4 (photo above), pedestrain bridges (Client National Railroad Administration and others).

Investigation of a new 100 m steel chimney in Poland with vibrations problems due to vortex shedding.

StBK has assessed the dynamic wind loading of a new 37 m flight control tower at Satenas, Sweden using the computer program CHIMNEY. The assignment has included an evaluation of accelerations at oscillations due to dynamic wind loading to verify that persons in the tower will not experience unpleasant movements (Client Astadien byggkonsult AB).

StBK har assessed the fatigue life of the steel frame of LKAB iron ore wagons. Data from on-track recordings has been evaluated, and the results are in good agreement with observations of fatigue cracks after 2.5 years of service. The results will be the basis for repairs of existing wagons, as well as design conditions for new wagons (Client LKAB).

Expert inspection of steel structures in railway bridges, Kungsbacka (Client Skanska).

Client inspection of fabrication and site work of steel structures in two railway bridges in Goteborg (Client City of Goteborg).

Client inspection of steel structures in boiler building and flue cleaning building, Hogdalens Kraftvarmeverk, Stockholm (Client AB Fortum Varme).

Investigator with Tore Lundmark, Scandia-consult concerning a collapse involving a 200 ton counterweight in the Saltsjo Bridge, Sodertalje (Client NCC).

Consultations and inspection on site of the collapse of a steel box bridge during casting of the concrete deck (Client Insurance company).

Computerized design of crane runway girders in various projects using the CRANEGIRD software, including SAAB at Trollhattan, Handeloverket at Norrkoping, Alvesta Polarit at Alvesta, Forssells Smidesverkstad at Huddinge, Tibnor at Goteborg, CWO WIAB, SSAB at Oxelosund and Granges Aluminium (Clients FB Engineering, Forssells Smidesverkstad, Goinge Mek, Stalbyggnadsteknik, K-Center Byggkonsult, and others).

Dates for courses TR-steel have been set upp for fall of 2019. The courses are adapted to the new and current European standards.

For more information, or a preliminary or a definite application, see
Course Program TR-steel.

TR-svarm - A competence course for persons responsible for direction, supervision and inspection of welding of reinforcement bars and welded cast-in fastening components. The course is based on the document "Welded cast-in fastening components in concrete - Recommendations for design, execution and inspection" (in Swedish) and a new standard for welding of rebars, SS-EN ISO 17 660.

The validity of the formal competence TR-svarm is five years. The Committee for TR-svarm has adopted new rules for extending this period. A new certificate may be obtained by participating in a new course TR-svarm (2 and a half days, new examination not required) or participating in a new examination (new course not required). This means that special update courses will not be arranged in the future.

A course TR-steel/E for supervisors and inspectors of the erection of simple pre-fabricated steel structures (in Swedish; date to be set later).

The program of the course has been extended to include also steel structures in highway equipment such as road portal signs, lighting masts, screens for noise reduction etc. (see publication 1993:61 from the national Swedish Highway Board).

Program (in Swedish) »

Preliminary Application »

A preparatory course in Steel Construction, 'Prep TR-stal/N' (in Swedish), primarily intended for those wishing to get a basic background of the practical aspects of steel construction. The course is specifically intended for those wishing to attend a later course TR-steel/N.

The course will be carried out during a week in Croatia (location not yet decided).

The program consists of 30 lecture hours. Visits to a structural steel workshop and a building site are being planned and there will also be some time for individual studies under guidance.

A major part of the program is specially suited for participants who wish a thorough review of such computational tasks which may appear for a structural steel supervisor or inspector and which are included in the written examination for TR-steel/N.

Prel. Course Program »

Prel. Application »

The Guidance Committee TR-steel has adopted revised rules for extending the validity of competence certificates TR-steel. The five-year period of validity may be extended by participating in either a special updating course or a new examination test. Because of the revised rules more updating courses have been included in the course program for 2008/2009.

A competence course TR-steel/N in English related to Swedish regulations and rules for steel construction (in Swedish; date to be set later). For more info, click TR-steel in menu to the left.

A new document "Welded cast-in fastening components in concrete - Recommendations for design, execution and inspection" (in Swedish) prepared by Goran Alpsten and Bernt Johansson is now available from Nordcert AB (Publication 2004:3). The publication may be ordered from Nordcert AB,
tel +46 8 34 92 70, fax +46 8 30 70 54, www.nordcert.se.

StBK participated in a basic course on Steel Construction arranged by Byggvaruindustrin in March. The course is intended as a preparatory course to TR-steel/N courses (Client Byggvaruindustrin, Danderyd).

A course on inspection of steel structures has been arranged in Stockholm and Gothenburg with Stalbyggnadsteknik in Uppsala. More courses are being planned.

StBK has participated in a number of internal seminars and courses for structural steel designers at various consulting firms and other companies, such as ELU Konsult AB, Prefab-utveckling AB and Tyréns AB.

Goran Alpsten has participated on Jan. 31 in a seminar on steel structures at the Building Authority in Stockholm. The seminar focused on safety and reliability of load-carrying steel structures in buildings. The program seemed particularly appropriate after the building collapse in Poland a few days before the seminar. The program included a discussion on the role of the Building Inspector with the Building Authority. Other matters discussed were procedures for checking project documents for load-carrying steel structures and for inspection of steel structures.

A new course for structural steel designers is under development in cooperation with the consulting firms Konkret, Scandiaconsult, Strangbetong, Tyréns and WSP.

Goran Alpsten participates as lecturer on welding of reinforcement and cast-in components in CBI Class II och Class I courses concerning prefab elements.

The computer program CHIMNEY for the design of chimneys, towers and similar structures with dynamic wind loading is available in a new revised version including supplemented computer drawings and inspection plan, and a separate supplementary report detailing the results for a structure with added antennas, screens etc.

The computer program CRANEGIRD for the design of crane girders and similar structures with moving loads is available in a new revised version including supplementary details on computer drawings.

CRANEGIRD is very flexible and specially suited for handling the rebuilding of existing crane girders with odd locations of supports, reinforcement of the cross section of parts of the girder, up to five independent cranes etc.

A completely revised computer program COLBUCK is now available for the analysis of compressed structural members starting from fundamental theory of buckling, and considering residual stresses, initial out-of-straightness and load eccentricities. A library with typified residual-stress distributions etc. is available if the user has no specific data.

Design of steel structures for new chimneys, and checking of existing steel chimneys to be equipped with new antennas causing increased wind loading, using the computer program CHIMNEY (Clients NCC, SRK, Stark Telecom, Grabe Miljoteknik, CP Energi AB, GEAB, Mexor and others).

The number of applications using the computer software CHIMNEY now exceeds 1,000. Application # 1,000 concerned a steel stack for an industrial establishment in Ohio, USA for the client UTAB at Vasteras, Sweden.