Hi
I just realised that Hilti profis using the strength (fu) of the connected steel to compute weld strength, not the strength of weld material. In the example below, weld material fuw=490MPa, but the weld capacity is checked with fuw=320MPa, which is the fu of steel profile. Can you please explain the reason behind it? Previously I think it used 490MPa which was correct.
Further, it appears that the software only allow to input throat thickness of an integer number, i.e 3,4,5mm... I have weld leg size of 4mm and want to input 2.8mm for throat thickness but not accepted. Can you please clarify?
Thank you.
Hi Austin,
Thank you for contacting Hilti and for your questions.
Profis Engineering uses the lower strength between the profile and welding material, e.g. in the attached case if the ultimate strength of profile is 500 MPa and ultimate strength of welding material is 490 MPa, then 490 MPa will be used in the calculation (please check attached images).
On your second question, the software allows the input of any throat thickness, e.g. in the attached case of 3.5. It is not necessary to be an incremental value of 3, 4, 5. The reason why you cannot input 2.8mm is because the minimum thickness is to be 3mm as per AS 4100 clause 9.7.3.2 (see attached clause).
I hope the above is helpful, but please contact our Technical Support Services if you have further questions >> Technical Advice Services - Hilti Australia
Kind regards,
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