THE CONVERSION OF ROUND HOLE AND SQUARE HOLE GRADING CURVES
H. Luehr, H Friede · Beton · 1971
THE CONVERSION OF A ROUND HOLE GRADING CURVE TO THE CORRESPONDING SQUARE HOLE GRADING CURVE CAN BE CARRIED OUT BY MEANS OF THE GRADING CURVE DISPLACEMENT VALUES V AND V', BY MEANS OF CALCULATION AND ALSO BY MEANS OF NOMOGRAPHS. AN EXAMPLE OF THE CONVERSION IS GIVEN.