5th Week Day 2

Study actual works of steel design and done some welding connection design as practice.

Work of Steel Design refered : Designer : Leena, Checker : Chen


Study the theory of RC Retaining Wall.
BS8002 using internet

Design of RC Retaining wall take into consideration of:

Sliding Control
- The Horizontal Force must be less than the resisting force of Friction and Cohesion(Cohesion might not be taken due to conservative reasons, by adding a key will result in higher resisting force yielded)

Overturning Control
By taking the moment at toe(Tip angle at bottom of retaining wall face), we will calculate the total clockwise and anticlockwise moment. The moment that will cause the RC Retaining wall to bend forward at the face is the overturning moment and the countering moment must be higher than the overturning moment by certain FOS.

Bearing Capacity Control
The Bearing capacity is the strength of soil holding the total vertical force exerted by the RC walll which is cause by the Weight of soil, Surcharge and also the weight of RC walll itself. The Bearing Capacity of the soil can be calculated using EC 7 (Eurocode) or using BS. The bearing Capacity must be higher than the total vertical force by certain FOS. (Around 2~3 according to Soil institution)