Introduction

This is the missing piece to complete hollowcore workflow. Run hollowcore and other similar pre-stressed flooring product member calculations in the Tekla Structures interface. You can use the tool without any calculation softwares installed, but you can’t run the calculations. Calculation engine for the tool is sold separately by globally proven solution provider CADeON. Calculations are customizable for any precast manufacturer using Eurocode based calculation.

Start

To use the entire extension package meant for hollowcore calculations, install also extensions "Holloecore Load Manager" and "CADeON SA" from Tekla Warehouse.

Open the tool by double-clicking the “Hollowcore integration” component in the Applications and components catalog.

Dialog

Ribbon
Strand pattern data table
Slab data table

Assign slab	Once strand patterns are defined you can assign slabs to those strand patterns. Select the model object, cast unit or floor component. Select the desired strand pattern row from the list Press “Assign slab” All selected slabs will be then assigned to that strand pattern and they will get UDA property saved to the objects with that strand pattern name. NOTICE: Slabs are not automatically calculated at this point if the tick-box for “calculate in assigning” is not selected.
Remove slab	Remove one or multiple slabs from the set strand pattern. Select the slab rows you want to remove and press “remove slab”.
Calculate	Runs the calculation for selected slab row(s) in the slab data table.
Open calculation	Opens the calculation in the Calculation module user interface. You can edit extra parameters and the results are automatically calculated accordingly. If you change the calculation parameters, the calculation is saved as a changed version. In the slab data table, the tool automatically changes the value of “Use modified values” to “Yes”. It means that the calculation results are according to the changed parameters. If you set that option back to “No”, the calculation is according to the original parameters. If you change the Concrete grade the tool will write an UDA named “HCI_CONCRETE_GRADE” where the value is according to the concrete grade used in the calculation.
Calculate optimized strand pattern	Calculates one or multiple slabs with the optimization logic in the calculation module. Select the model object, cast unit or floor component. Press “Calculate optimized strand pattern NOTICE: Strand patterns do not need to be defined but the tool creates a strand pattern that is the calculation result.
Open report	Opens the printed PDF document of the selected slab row in the slab data table.
Color by strand pattern	Colors the assigned slabs in the model and the corresponding strand pattern rows in the strand pattern data table. Image
Color by utilization	Colors the calculated slabs in the model with gradient green color according to the utilization ratio (light green 0% - dark green 100%, >100% red) Image
Customize strand pattern	Opens a dialog for adding and removing strand patterns per slab profile. Set strand patterns are added to the strand pattern data table. P32(320X1200), 5 P32(320X1200), 7 P32(320X1200), 9 P40(400X1200), 5 P40(400X1200), 7 P40(400X1200), 9 If your strand pattern also contains e.g. the distance of strands from bottom and/or strand pull-force, those should be part of the strand pattern code. P32(320X1200), 5-35-1100 P32(320X1200), 7-35-1100 P32(320X1200), 9-35-1100 P32(320X1200), 5-40-1200 P32(320X1200), 7-40-1200 P32(320X1200), 9-40-1200 P40(400X1200), 5-35-1100 P40(400X1200), 7-35-1100 P40(400X1200), 9-35-1100 P40(400X1200), 5-40-1200 P40(400X1200), 7-40-1200 P40(400X1200), 9-40-1200
Customize support length	Opens a dialog for adding and removing default support lengths per slab profile. Set support lengths are listed as dropdown options in the slab data table cells for support length. Support length is set automatically for the default support length according to the slab profile. P32(320X1200), 60 P40(400X1200), 80 Image
Customize topping	Opens a dialog for adding and removing structural concrete topping thickness in millimeters. Set concrete toppings are listed as dropdown options in the slab data table cells for topping. Topping value “0” means that there is no topping. Notice: Topping weight is automatically added as self weight in the calculation, so don’t add structural toppings weight as load to the model. Image
Customize fire resistance	Opens a dialog for adding and removing fire resistance time in minutes. Set fire resistance times are listed as dropdown options in the slab data table cells for fire resistance. The fire resistance value needs to be between 15-240 minutes. Image
Options	Opens a dialog for additional settings
Open log file	Opens a log file of the tool.
Select in model	When selecting a row(s) in a slab data table, the slab gets selected in the model.
Zoom to part	When selecting a row in the slab data table, the model view zooms in on that slab in the model.
Hide rows with no slabs	Hides the rows from a strand pattern data table that has no slabs assigned to it.
Show only favorite	Shows only the strand pattern data table rows that have been marked with the favorite star icon.
Calculate in assigning	Automatically runs the calculation when assigned to a strand pattern or when moved to another strand pattern with drag and drop.

Options dialog

Project properties	Type the project properties or refer to project UDAs e.g. PROJECT.DESIGNER
Calculation definition UDAs	Names of the UDAs that the tool will write and use for calculation
Store calculation results UDAs	Names of the UDAs where the calculation results are written to the slabs.
Filter cuts	Use this option to filter desired cuts away from the calculation. The tool will ignore those cut objects in calculation integration.
Profile mapping file	Map the Tekla Structures slab profile name and material to the calculation engine’s profile name and concrete grade. For the mapping you might need to add also the manufacturer info that is required information for the calculation. Please notice that for concrete grade you need to give the concrete cylinder strength and strength at the transfer. Image
Calculation module	Select the calculation module from the list of available options.

Limitations

If the hollowcore is narrowed from both sides, the calculation is incorrect.
Calculation does not know the deflection of the entire and its slabs, so you need to consider that separately e.g. in cases where hollowcores are supported by hangar products