Printed from: https://finalhbks.asgoodasready.com/footpaths/boardwalks-and-bridges/abutments-and-end-seats/
The abutments or end seats keep the beam ends dry, and provide secure anchorage to prevent their movement in use and during flood. The diagram here shows how to calculate the correct distance of the end seat from the bank. The end dam keeps surfacing and downslope material off the beam ends. Various types of abutments...