Tel: 1-206-279-3300

1st European Deep Excavation Design Workshop

Dec. 3-4th, 2018

Bucharest, Romania

Deep Excavation Software

DeepEX 2017 talk to it and design your deep excavation!

Excavations in 3D, VR, AR

Holographic model of a deep excavation with HoloDeepEX

Get the Free 3D Viewer


Free 45 min webinar

Deep Excavation Design

Fully booked!

Free Helical Pile Design Webinars:

To be announced

New Deep Foundation Software

DeepFND - Deep Foundation Software, caissons, CFA, drilled piles, driven piles, concrete, timber


New helical pile software HelixPile
Signup for a free trial and get our free pdf on the five most common errors in deep excavation design
Our Software Solutions
DeepFND 2017: Deep Foundation software (NEW!)
DeepEX 2018: Deep Excavation software
Soldier pile walls
Sheet pile walls
Secant pile Walls
Tangent piles
Diaphragm Walls
Soldier and Tremied Concrete
Soil Mix walls
Combined king pile sheet piles
Slope stability
Cost estimation for braced excavations
Waler-Strut Cofferdams
SnailPlus 2018: Soil nailing - soil nailing walls
SiteMaster: Inclinometer software (adopted by Geokon)
HelixPile: Helical Pile Software
RC-Solver: Concrete Design ACI-318, EC2, EC8
Steel-Beam: Steel beam column design, full equations, AISC, EC3

Embedded wall design codes

Braced excavation design requires both skill and careful evaluation of many factors that can affect performance. Traditionally in the US, braced excavations are designed with a serviceability approach where soil parameters are conservatively estimated and the performed analysis yields the service displacements, moments, and forces. Design forces are then calculated by applying a global safety factor on the service design results, while the wall embedment is determined by calculating limit equilibrium safety factors against wall rotation and passive resistance that range from 1.2 to 1.5.

Our deepex software COMES PACKED WITH ALL CODES AND STANDARDS. Please CLICK here to arrange a free online PRESENTATION with our technical experts

In Europe, in contrast to the US, an ultimate limit state design approach has been adopted in geotechnical design including the design of braced excavations. In this design philosophy both wall and supports are designed based on an ultimate limit condition. The ultimate design forces are typically determined by reducing the characteristic soil strength parameters or by multiplying the effects of actions and dividing the effects of resistances by various safety factors. At the end, a safety factor of one or greater is required for all structures and other types of safety factors.

In the US, there is an increasing trend of promoting ultimate limit state design in geotechnical design, including braced excavations. In the author’s experience the ultimate limit state method works reasonably well for most limit equilibrium methods but can produce very inconsistent results in many cases when numerical analyses are employed. Hence, the advantages and limitations of the ultimate limit state design should be carefully weighted by practitioners and academia in the US before, and if, the ultimate limit state philosophy is incorporated in a legally binding building code.

The following sections within the deep excavation library examine how current design codes affect braced excavation design practice.