Retaining Wall Design Example With Surcharge Load

A wall number is assigned as per criteria discussed in.

Retaining wall design example with surcharge load. Retaining walls example 3 16 design of a cantilever retaining wall bs 8 110 the cantilever retaining wall shown below is backþlled with granular material having a unit weight of 19 knm 3 and an internal angle of friction of 30. 14 1 1 1of this chapter. Assuming that the allowable bearing pressure of the soil is 120 knm 2 the. Retaining wall design 10 editionth a design guide for earth retaining structures contents at a glance.

Basement walls they are often buttressed by return walls and floor diaphragms which may make them too stiff for active soil pressures to develop requiring higher design loads and a different design approach. It can be either dead loads for example sloping backfill above the wall height or live load which could result from the highway or parking lot paving or adjacent footing. Each of these walls must be designed to resist the external forces applied to the wall from earth pressure surcharge load water earthquake etc. Soil bearing and stability 8.

Surcharge load on plan surcharge 10 0 kn m2 applied vertical dead load on wall wdead 85 6 kn m. Retaining wall design bs 8002 1994 tedds calculation version 1 2 01 06 ultimate limit state load factors dead load factor f d 1 4 live load factor f l 1 6. Prior to completing any retaining wall design it is first necessary to calculate the forces acting on the wall. Possible modes of failure for free standing concrete cantilever retaining walls are illustrated.

Forces on retaining walls 6. Surcharge loads acting on retaining wall surcharge loads acting on retaining walls are additional vertical loads that used to the backfill soil above the top of the wall. Based on our example in figure a 1 we have the forces due to soil pressure due to water and surcharge load to consider. The live load surcharge is positioned to produce the maximum design load.

1 1 possible modes of failure. However this isnt the case if the retaining wall is. Retaining wall design example with surcharge load. Soil mechanics simplified 4.

Design procedure overview 3. Wisdot regional staff determines the need for permanent retaining walls on highway projects. Retaining wall to support a fill. Retaining walls generally have little vertical load other than self weight and weight of any soil on a footing.

Earthquake seismic design 7. Building codes and retaining walls 5. In figure 1 where a semi gravity wall is shown the live load surcharge is placed over any element of the ers for settlement and bearing analysis while the live load surcharge is placed behind all the elements of the ers for sliding and eccentricity analysis. However this isnt the case if the retaining wall is.