Center posts prevent the failure of struts due to their own weight.įig.4: Bracing Excavation Method Anchored Excavation Methods Bracing system consist of wale, strut, center posts, end braces, and corner braces.Įarth pressure transfer to horizontal struts through wale, and the purpose of corner and end braces is to reduce wale span without increasing strut number. The economical method may be distinguished based on analysis, design, and evaluation results.įig.3: Cantilevered Full Open Cut Excavation Method Bracing Excavation Methodīracing excavation as shown in Figure 4 is the placement of horizontal struts in front of retaining wall to held excavation wall material pressure. Therefore, it cannot categorically be claimed that which method is more cost effect. The latter needs retaining wall to support foundation wall soil and prevent collapse of foundation wall but it neither require backing nor slopes. However, if the slope is considerably gentle or the excavation is largely deep, it will costly.įig.2: Full Open Cut Excavation with Side Slopes The former is assumed to be economical since the side of excavation would be sloped and does not need any support to held foundation wall. It divided into two major types including sloped full open cut as shown in Figure 2 and cantilever full open cut as illustrated in Figure 3. Factors Affecting Selection of Excavation MethodsĮxcavation Methods for Deep Foundation Construction Full Open Cut Method.Excavation Methods for Deep Foundation Construction.
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