Week 3 Challenge

AIM: To fix the span length as per IRC 5 guidelines and also to find the scour depth and uplift pressure and also how to control the uplift pressure.

1.How hydrology and geotechnical studies (preliminary and detail studies, zone of influence) are used in fixing span as per IRC standards and type of bridge. Mention the clauses applicable for the same.

Determine the scour depth at the pier and abutment location having silt factor =3

Design discharge = 1000 cumecs

Linear waterway = 128 m

1b. what measures can be taken to avoid scour at bridge for shallow foundation. Also draw the section of measures on the downstream and the upstream side.

(Note: Draw all the drawings to the scale and neatly)

1.c What is uplift and how it can affect the foundation. (loss of contact)

Calculate the uplift in U trough of below section with height 3,4,5 meters. with water level on top of ramp wall level .

What are different measures that can be taken to avoid uplift.

This fig above Is part of the question