What is the value of freeboard for high level bridges?

bunds at that point, for high level bridges, the freeboard should not be less than 600 mm. stream exceeds the limiting velocity that can be withstand by the particles of the bed material.

What is meaning of HFL in bridge?

H.F.L. : Highest flood level is the level of highest flood ever recorded or the calculated level for design discharge.

What do you mean by free board?

Definition of freeboard 1 : the distance between the waterline and the main deck or weather deck of a ship or between the level of the water and the upper edge of the side of a small boat. 2 : the height above the recorded high-water mark of a structure (such as a dam) associated with the water.

What part of a bridge has to be the strongest?

Strength. An arch bridge is stronger than a beam bridge, simply because the beam has a weak point in the center where there is no vertical support while arches press the weight outward toward the support.

What are the 3 main parts of a bridge?

The main components of a bridge are the foundation, substructure, and the superstructure.

Is essential to keep bridges in better Seviceable condition?

Even if the bridges are well designed and properly constructed, periodic maintenance, if needed, is very essential to keep them in good serviceable condition. Therefore, the bridges should be regularly inspected and properly maintained.

What is clearance in bridge?

Clearance of bridge span is generally measured from the water surface (or ground, if there is no water) to the undersurface of the bridge. Enough clearance should be considered in the bridge design to ensure the traffic safety under the bridge.

What is the skew of a bridge?

Skewed bridges are characterized by their skew angle, defined as the angle between a line normal to the centerline of the bridge and the centerline of the support (abutment or pier).

What is free board in dam?

Freeboard is the vertical distance of a dam crest above the maximum reservoir water level. It is clear that the goal of constructing completely stable dams cost effectively is challenging.