Live Load Retaining Wall

Steel has very high tensile strength but can bend easily due to its small cross section.

Live load retaining wall.

Missing concrete or pool consolidation and foreign object intrusion in the wall base section will reduce support to the steel and can cause wall failure. Eh static soil lateral load. Surcharge loads acting on retaining walls are additional vertical loads that used to the backfill soil above the top of the wall. Ls live load surcharge.

For crib walls for extreme event limit state i live load surcharge is not considered where. Retaining wall to support a fill. Prior to completing any retaining wall design it is first necessary to calculate the forces acting on the wall. Ev the self weight of the soil above the heel of a footing in a semi gravity retaining wall or of the reinforced soil in a mse.

The weight of a building or another retaining wall above and set back from the top of the wall are examples of dead load surcharges. Retaining wall design the applicable train live load surcharge is the cooper e80 which can be approximated as 1 880 pounds per square foot per foot psf ft of rail. 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. Traffic and street traffic for temporary shoring design adjacent to the public way.

Eqe dynamic. Dc the self weight of structural components. Surcharge loads shall be applied where vehicular load or pedestrian loads are expected to act on the surface behind a shored excavation or retaining wall within a distance equal to the height of the excavation or wall. Surcharge loads acting on retaining wall.

In the conventional design of retaining walls and bridge abutments the lateral earth pressure due to live load surcharge is estimated by replacing the actual highway loads with a 600 mm layer of backfill. Chapter 14 retaining walls july 2020 14 7 14 1 introduction retaining walls are used to provide lateral resistancefor a mass of earth or other material to accommodate a transportation facility. Construction since it is the most critical section of wall stem in wall design. Each of these walls must be designed to resist the external forces applied to the wall from earth pressure surcharge load water earthquake etc.

Design relationships table 1 summarizes the influence of increasing the wall batter increasing the unit width increasing the unit s in place density and using better quality backfill on the maximum. For comparison this surcharge is significantly larger than highway live load surcharge which is typically simplified to 250 psf ft. This original recommendation was made several decades ago when the highway truck loads were much lighter.