Hi
We got the hauling bridge that may had tall abutment. The soil in near river was too soft, with rock bottom, and the extended length bridge will lay on the mudstone rock. I believe extending the bridge will give more confidence since the pier near river will be very high, with 18m soft soil and directly to rock.
Since the extending will lay on the rock, i suggesting some caisson foundation or shaft foundation. We are suggesting that height of the abutment max height will be 8-9m for pre-eliminary (not yet counted), while some US code gave max 3-4m, and canada around 10m.
When it very tall, i doubt the caisson will be support out overturning, and will need shaft pile for foundation.
What the max height abutment by the code? or possible assume bottom is rock kayer.
We got the hauling bridge that may had tall abutment. The soil in near river was too soft, with rock bottom, and the extended length bridge will lay on the mudstone rock. I believe extending the bridge will give more confidence since the pier near river will be very high, with 18m soft soil and directly to rock.
Since the extending will lay on the rock, i suggesting some caisson foundation or shaft foundation. We are suggesting that height of the abutment max height will be 8-9m for pre-eliminary (not yet counted), while some US code gave max 3-4m, and canada around 10m.
When it very tall, i doubt the caisson will be support out overturning, and will need shaft pile for foundation.
What the max height abutment by the code? or possible assume bottom is rock kayer.