I don't speak Italian, but I don't think you've included enough information for this to matter. I would guess they mean the end reactions calculated as if there were two simple span beams instead of one contiuous one. You could check this against the standard formulas for continuous beams over stiff supports.

going from the formulas for the Ti's, looks like the A,B's are the simple span end reactions combined with the reactions caused by the interior moment, MI:
A1 = simple span reaction at the left end of the first span
B1 = simple span reaction at the right end of the first span
A2 = simple span reaction at the left end of the second span
B2 = simple span reaction at the right end of the second span

Open Source Structural Applications: https://github.com/buddyd16/Structural-Engineering

yes, midspan reaction = B1+A2

another day in paradise, or is paradise one day closer ?

Many thanks all, cleared it for me!

It'me that I posted that figure. I asked if it was necessary any translation, but someone replied that it was not necessary. Any way all above answers are correct. I here attached the complete set of formulas

• https://files.engineering.com/getfile.aspx?folder=67629517-bebf-4d71-a749-e

It looks like a pretty good listing of loadings for beams. Does anyone have an idea from what reference text this came from ?

original book : "Stahl im hochbau" - Verlag Stahleisen - Dusseldorf - 1969 (but 1st edition 1935)
my copy (word by word translation in Italian) : "L'acciaio nelle costruzioni" - ediz. Cremonese - 1973 (out of print - few copies available on line)

PS : I already did (for my personal use) the digitalization of formulas for beams and frames. I can post if no problems with copyright : let me know

german original text > translated in Italian > translated in English !

fortunately math is an international language !

another day in paradise, or is paradise one day closer ?

rb1957 : ... so what's the reason of this thread ?

PS : can I post or not ? or no need because of computers ?

Italian is the proper language for engineering. All educated people agree on that. ( paraphrasing from a fav movie of mine.)

Robyeng, would be good if you can post. I'm from an Italian background and would like to see an Italian structural engineering reference.

Of course any ref to DIN Standards are obsolete (in case, I am ready for help in translation)

• https://files.engineering.com/getfile.aspx?folder=7d311a32-46a1-4ba9-8966-f

These kind of formulas you can find in most of the 'older' Engineering text books....