Split PDF files by spesific size

Hello

I have a requirement by my company to split the final PDF to 14.5mb pieces or less ,
i know you have the split option by page but as you can imagine this dose not work for me . Is there any other way i can approach this problem?

Thanks in advance.

@cgatscognity

You can adopt an approach where you can start adding PDF pages into new document and at every page addition, you can save the file to a memory stream and check its size. Once its reached to your desired size, you can save it finally. You can use simple C# method to check the file size from a memory stream.