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FEM-Design | Structural Analysis and Design Software

Powerful and intuitive modeling software for structural analysis of building structures.

IMPACT | BIM Software for Precast Design & Planning

A family of advanced BIM precast software to efficiently manage, detail, produce, transport and erect concrete elements.

PRE-Stress | Design Software

PRE-Stress is an advanced software for calculations of prestressed concrete elements, including hollowcore slabs; slabs; beams; sloped beams and double tees. 

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About StruSoft
StruSoft makes life easy for building; structural design; precast concrete design and architectural engineers who work with analysis and design of buildings, structural engineering, 3D modelling, detailing, assembly etc. We provide highly specialised software in “Structural Analysis & Design” – all essential tools for the entire building industry of construction companies, engineering firms and consulting companies. We also provide a complete BIM workflow for precast concrete businesses. Our software helps our clients saving time and money by increasing the quality, efficiency and productivity when engineering buildings.

Mar 30, 2021

COWI design new town hall in Höje-Taastrup with great benefit of PREFAB-Print

      A new town hall will be built in Höje-Taastrup, Denmark. Engineer Nicolae Rares Nonu of COWI analyzed the loads in FEM-Design, and documented in PREFAB-Print which is a plug-in to the FEM-Design. At his suggestion, we developed a solution where data was exported to Excel from PREFAB-Print. Now he can continue to work in a simple way and produce loads in order to calculate the amount of reinforcement. It saves time, he says.  In Höje-Taastrup, just outside Copenhagen in Denmark, a new town hall is being built. With a square design and a beautiful silhouette the city, gets a new gem that can be seen from afar. The town hall has nine floors and a vertical atrium runs throughout the construction. Two lift shafts are an important part of the load-bearing part of the structure. In order to ensure stability in the design, analysis was carried out in FEM-Design by COWI, a well-known international technology company. They have delivered technical solutions for more than 90 years. In addition to the construction industry, COWI is also active in infrastructure, environment, energy and urban planning.  Fast modelling in FEM-Design The first step was to develop a 3D model of the structure. Engineer Nicolae Rares Nonu at COWI in Denmark modeled the building in FEM-Design.  " It was quick, in a couple of days I had drawn up the construction from the ground up," says Nicolae. We adjusted the model according to the Revit model, which we later gained access to. Then we carried out the analysis of loads, mainly self-loads and wind loads, which were used to design the right stability for the new town hall. The project included 25 load combinations. After the FEM analysis was completed, Nicolae used PREFAB-Print to study the results. It is a plug-in to FEM-Design that shows the analysis results for prefab design.  - The information becomes easier to understand when presented graphically and can be exported in a pdf. I don’t have to spend time producing the documentation myself, it is generated automatically.       Pictures: PHL Arkitekter   Useful data from PREFAB-Print in Excel The town hall's load-bearing frame in the central part is constructed with prefabricated concrete elements. To design the elements, Nicolae needed to obtain data on design forces from the model, important information that becomes the basis for calculating the amount of reinforcement. That's why Nicolae asked StruSoft how the information from the PDF document could be further worked on.  "The document from PREFAB-Print was quite extensive and had 300 pages," says Nicolae. “It takes time to look through each page to get the data I need. Therefore, I asked Benjamin to see if he could come up with an Excel-based solution where data could be exported, which he did.”  It changed the way Nicolae worked. - Now it is possible to export data from PREFAB-Print to Excel and get a more flexible and easy way of working. I process data from the analysis, find data on forces and use data to perform calculations in different formulas. This makes it easier to design the reinforcement of the walls of the building. A strong information chain was built up where data from the model and analysis becomes editable and very useful in the project. From FEM-Design, via PREFAB-Print to Excel. A flow that facilitates and saves time in the project that gives Höje-Taastrup a new impressive town hall. It is an impressive and beautiful town hall that is being built in Höje-Taastrup, Denmark. Picture: PHL Arkitekter   Nicolae Rares Nonu. Bild: COWI              

Mar 30, 2021

98% of users satisfied with our customer support!

Our support at FEM-Design and WIN-Statik gets a very high rating from the users. The latest poll gave 98% customer satisfaction! - The support works great! says WSP designer Farshid Green. In this article, support manager Joakim Carlberg explains how we help the user move forward in their calculation work. We continuously measure if our customers are satisfied with the support and recently we did a compilation where the support received a very high rating from the users. A whopping 98% were satisfied!  How does this work? Joakim Carlberg, support manager for FEM-Design and WIN-Statik, gives an insight. - The user submits a supportcase on our portal and once we have answered the case, a questionnaire is automatically sent out. How does the user get access to support? - The easiest way to reach the portal is through our website (strusoft.com/support) or by clicking Support in the program's start menu. There you write your question and can also attach a picture to illustrate the problem. The portal also includes a knowledge guide. - When typing in your problem in the subject box, the portal searches and suggests articles and texts that can be helpful. If it would be difficult for the user to summarize their question in a few words and need to explain in more detail, then there is a possibility for that as well. The support can use screen sharing and remote control in Teamviewer. The user explains and the support provides direct guidance so that the calculation work can continue.  Quick response within the hour The topics vary greatly in the submitted questions, ranging from the function and application of the programme to more technical queries. How long is the response time?  "The user will receive a response within an hour," Joakim says. When the question requires deeper investigation from our side and maybe involve the developers of the programs, then it takes longer. Users are very grateful and happy that they receive a quick response from our support.  Super satisfied designer at WSP Support works great! - says WSP designer Farshid Green. He remembers two events when he needed advice and guidance. In a project, it was important to export data from the center of a wall, which was a rather tricky task.  - They referred me to one of their employees at StruSoft. I was helped to access the wall's data by using Grasshopper and I was then able to solve the task and move forward. In another case, Farshid wanted to deepen his knowledge of a particular form of rigidity in the program.  - I got a technical response very quickly and I am super satisfied with the FEM-Design support!  Our support are thus well rated by the users and we are constantly developing to make it even easier to reach and get help from the support. Everything is structured so that you as a user can be productive in the shortest time and be able to continue the important calculation work.   Easy to reach, go to Support in the start menu.  

Mar 24, 2021

WIN-Statik Tips & Trix del 9

Markant skillnad i utnyttjande vid dimensionering enligt 1ord och 2ord teori för stål Ett ärende som då och då rapporteras till supporten gäller markant skillnad i utnyttjande då dimensionering utförs baserat på 1ord snittkrafter jämfört med 2ord snittkrafter för stål. Vi ser på ett exempel: En pelare IPE 180 med längden 6 m är vänd i riktning z-z dvs böjning kring den veka riktningen ligger i planet. Pelaren belastas av en axialkraft på 35 kN. Vi gör först en analys enligt 1ord teori vilket innebär att ”Second order analysis” avaktiveras.   Dimensioneringen sker nu enligt EC3 kap. 6.3 dvs hänsyn till effekten av böjknäckning tas genom att axialkraftskapaciteten reduceras i förhållande till knäcklängden. Eftersom pelaren är ledad i båda ändar anges knäcklängden i planet till 6 m och upplagsförhållanden ut ur planet till Hinged – Hinged. Eftersom veka riktningen ligger i planet kommer det förstås att bli den som blir dimensionerande och en dimensionering ger nu följande resultat: Pelaren färgas grön vilket innebär att kapaciteten är tillräcklig och böjknäckning i veka riktningen blir dimensionerande med utnyttjandet 0.66. Axialkraftskapaciteten Nb,z,Rd = 53.4 kN och en titt i rutan Capacity visar att denna bygger på knäcklängden 6 m och att reduktionsfaktorn är så liten som 0.063 i veka riktningen. Vi gör en ny analys och denna gång enligt 2ordningen. Dimensioneringen sker nu med hänsyn till tillväxten av 2ord moment enligt EC3 kap 5.2 (7)a. För att kunna dimensionera måste vi nu aktivera initialkrokighet vilket görs med verktyget ”Initial bow imperfection”. Ingen dimensionering enligt 2ord teori kommer att vara möjlig annars eftersom det måste finnas ett 1ord moment för att ett 2ord moment skall bildas och utan det ingen kontroll av böjknäckning. Dimensioneringen i planet kommer nu att göras med hänsyn till 2ord moment medan dimensioneringen ut ur planet görs med samma metod som tidigare dvs enligt EC3 6.3. Efter analysen erhålls ett 2ord moment på 2.686 kNm. En dimensionering ger nu följande resultat: Vi ser nu att utnyttjandet endast blir 0.26 mot 0.66 tidigare vilket förstås kan väcka funderingar. Vi prövar med att öka lasten för att se hur mycket pelaren klarar. Vi ökar från 35 till 51 kN.  En 1ord dimensionering ger nu utnyttjandet 0.96 och vi ser att utnyttjandet 1.0 erhålls för lasten 53.4 kN. En 2ord analys visar nu att 2ord moment vuxit till 12.79 kNm och utnyttjandet är 1.1 dvs över det tillåtna.       Vi hade alltså ett resultat där 1ord dimensionering verkade betydligt mer konservativ är 2ord men det visar sig till slut att pelaren ändå klarar något högre last enligt 1ord jämfört med 2ord. I andra fall kan det vara tvärtom. Vad som händer är att vid 1ord reduceras kapaciteten linjärt men tillväxten av 2ord moment är inte linjär utan momentet växer mycket kraftigt när man närmar sig eller går över det kritiska området. Genom att exempelvis öka lasten ytterligare till 53.4 kN som ger utnyttjandet 1.0 för 1ord ger 2ord utnyttjandet 1.71! Sammanfattning: Dimensionering enligt 1ord och 2ord kan visa ganska stora skillnader i utnyttjande när man ligger en bit ifrån det kritiska området men kommer att närma sig varandra när maximal bärförmågan uppnås. I vissa fall ger 1ord dimensionering något större kapacitet som i det här fallet men i andra fall kan det vara tvärtom.
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