Hollow Core Slab Design Calculation

[Keri Gamrath]

Youcan choose from a predefined list of hollow core slab cross-sections or create your own. If you have a CAD drawing of your section, you can use the import function and the program will find the hollow-core profile and automatically generate the section for you. You will need to configure the prestressing wires/strands though using the Strand Pattern Manager.

Add topping to your prefab element and make a complete calculation taking into account the cast-in-place concrete layer. You can add reinforcement to the topping layer and have it to work together with the prestressed hollowcore. You can also perform a fire calculation.

It is very easy to add prestress tendons/wires/strands and standard reinforcement to your element. Applying the bars can be done manually or through the pattern manager and you can customise and save any layout for future projects.

The self-weight is automatically applied for the element and any topping if present. Depending on the type selected for the load the program will automatically add the correct factors according to the National Annex and generate the load combinations.

Calculate the hollowcore slab according to Eurocode and get a fast and accurate presentation for the whole lifespan of the element. The code check makes all the verifications according to Eurocode including checks for spalling. You can check the specific verifications for each stage. Get a full documentation for your hollowcore element calculation in seconds with all verifications, including fire calculation.

PRE-Stress Users working with the IMPACT Design software can also import data and benefit from a full integration of hollowcore calculations whilst detailing hollow core slab floor layouts in both AutoCAD and BricsCAD and now in full 3D with the IMPACT Project Manager.

Bio: Anders Nilsen is Sales Manager at StruSoft and based in Denmark. He joined StruSoft in 2019 and has a background as a civil engineer with ...show more lots of practical experience in all our structural software. In addition to sales, Anders also manages our sales and customers experience teams in Denmark and Poland. show less

Bio: Isak Bjrhag works as Business Development Manager for new markets. Isak has many years of experience both with hands on practical engineering and working with our ...show more customers helping them to succeed with our structural engineering software. This can be achieved through specific training, presentations or hands on demonstrations for specific cases. Please feel free to contact Isak if you are interested in a demo or want to expand your knowledge in our structural software. show less

Bio: Joni has helped and trained hundreds of engineers in structural analysis in Finland. He works in both civil and mechanical engineering fields with structural analysis. ...show more Joni has over 15 year of experience in structural design of many types and sizes of steel, concrete and timber structures. Joni is the Product Owner of our JIGI software and Country Manager for Finland. Please free to contact Joni if you need any help to solve your structural analysis problems. show less

Bio: Mohsen Ghaemi is the Regional Manager for StruSoft in our Structural Business Unit. He has a PhD in Structural Civil Engineering (Topology optimisation). Mohsen has ...show more been with StruSoft since 2002 and has more than 20 years of experience with the FEM-Design software and its development, as well as in customer relationships and sales. Please feel free to get in touch with Mohsen directly. show less

Bio: Fredrik Lagerstrm MSc has 8 years prior experience before joining StruSoft working as a civil engineer using FEM-Design, WIN-Statik & PRE-Stress in his daily practice. ...show more In 2011 Fredrik joined StruSoft as a Technical Sales and Education Manager. Fredrik works closely with both Sales and Development to get feedback directly from our Swedish Customers to in turn help our Developers to implement the requested new features in an accurate way. Please feel free to get in touch with Fredrik if you require any technical help or support with our structural software. show less

Bio: Ciprian Tibea is the Head of Sales for Baltics & Romania and has been with StruSoft since 2018. Ciprian has a PhD in Civil Engineering ...show more (Ultra High Performance Concrete Subjected to Shear Action) and a Masters Degree in Entrepreneurship and Business Administration. Prior to StruSoft, Ciprian was working as a research engineer for Consolis for 6 years and for 1 year with a local company in Romania working on structural design projects with advanced Finite Element Software (Diana and Atena). Ciprian is your main Structural Sales contact for markets outside Europe, the Baltics and Romania. Please feel free to get in touch. show less

Bio: Suhas is the Managing Director of StruEngineers India, a Design & Detailing Service company 100% owned by StruSoft. Suhas has a BSc in Civil Engineering ...show more and has been providing design support services to the Precast Industry, worldwide, over the last 20 years. Suhas was one of the original founders of StruEngineers which was established 10 years ago and previously worked for Neilsoft in Pune. StruEngineers provides local support in India for all StruSoft software and Suhas is a specialist with IMPACT AutoCAD. If you are based in India and looking for more information or support please feel free to get in touch directly with Suhas. show less

An example with the model of a precast hollow core slab used for ceiling construction. The model was analyzed in the IDEA StatiCa Beam app using a composite section. Comprehensive calculation with different material characteristics for each part of the section and including construction phases.

Actually I am thinking to model precast pretensioned hollow core slab in Structural Bridge Design. Can the software help to calculate the prestress losses calculation and check design based on Eurocode 2 ?

Structural Bridge Design is intended to be used for the structural analysis and design of bridges to BS5400, Eurocode 2, AASHTO and AS5100, but the methods are generally very similar to those for buildings so with a little bit of "engineering judgment" it may be possible to use the software to carry out the calculations for hollow core slabs used in building construction.

The standard beams used in the software are standard bridge beams, but, any section shape and arrangement of prestress tendons can be used by using "user defined" sections and manually defining tendon locations.

The design can be carried out to Eurocode 2 and full consideration of prestress losses is taken into account, based upon the casting, prestressing and construction methods used for bridges. I'm not familiar with the manufacturing methods used for standard hollow core slabs for buildings, especially with regards to curing temperatures and how and when transfer of the prestress into the concrete occurs, but I'm sure that this can be accommodated by adjusting the many parameters available within the software.

After digitalizing its hollow core slab calculation tasks with Elematic EliSLAB software, Serbian precast manufacturer Put Inženjering has saved on raw material and labor. Strand optimization saved so much steel that the software paid itself back in a couple of months.

This priority has not gone unnoticed at Put where the structural engineers are impressed with the interface and how easy it is to add national annexes to the Eurocode or cross sections of any precast technology provider.

A smart, dedicated software tool for reinforcement calculation in hollow core and solid slab design. You simply feed in your requirements, and the software takes care of the entire estimation work, including load, stress, and strand calculations.

The document summarizes the analysis and design of a multi-story institutional building with hollow core slabs. It discusses using Staad.Pro software to analyze and design the building's hollow core slabs, beams, columns, footings, and stairs. The production process of hollow core slabs is also outlined, including bed preparation, stressing strands, casting, curing, transport, and erection. Key activities to be performed include calculating loads, designing hollow core slabs, connecting slab panels, designing beams and columns, and designing footings.Read less

The library of cross-sections can consist of each kind of composite hollow core slab. You can easily parameterize the thickness of the topping. Then you just pick a set of hollow cores you want to calculate and pick the appropriate strand patterns for it. Then the checks are performed, and you can see whether the hollow core slab is properly designed or not.

Finally, you can calculate what is called load-capacity diagrams. Using the batch processor module, you can calculate the maximum span for a predefined template of a hollow core slab. You can analyse the influence of individual parameters, like load, concrete grade, time of loading, creep factor, set of strand patterns on the maximum allowable span.

All articles published by MDPI are made immediately available worldwide under an open access license. No special permission is required to reuse all or part of the article published by MDPI, including figures and tables. For articles published under an open access Creative Common CC BY license, any part of the article may be reused without permission provided that the original article is clearly cited. For more information, please refer to

Feature papers represent the most advanced research with significant potential for high impact in the field. A Feature Paper should be a substantial original Article that involves several techniques or approaches, provides an outlook for future research directions and describes possible research applications.

Abstract: Hollow-core slab (HCS) floors supported on steel beams require the use of steel reinforcement as connections to avoid slab displacement caused by lateral loads. However, current North American design codes offer limited provisions on the design and behavior of such connections. In this study, the results of an experimental investigation conducted on such connections to assess their capacity and mode of failure are presented. Eleven full-scale assemblies of HCS reinforcing bar connections to steel beams were tested to failure under monotonic in-plane loading (compression, tension, or shear). Test results revealed that connections tested under compression failed by bar buckling without yielding. Under tension, the connection bar reached close-to-yielding or yielding strains at the unrestrained portion of the bar, followed by grout splitting in the shear key or the grouted core. Finally, the mechanism of failure of specimens subjected to shear was governed by bar yielding. Keywords: hollow-core slabs; in-plane forces; integrity ties; end-bearing connection; side-bearing connections

3a8082e126