Tel: 1-206-279-3300

Online Slope Stability, Soil Nailing, and Inclinometer Monitoring Workshop

4 hours each day, 8 PDH

Slope stability, soil nailing, and inclinometer worksho

July 15, 16, 2020

Upcoming Workshop Series

60 hours

Data, databases, and Machine Learning for Geotechnical Engineers

Data, databases, and machine learning for civil engineers

Aug, Sep, Oct 2020

The future of civil engineering is approaching

Online Deep Excavation and Soil nail wall design Workshop

16 PDH

Apr. 22,23, 29, 30, 2020

Deep excavation in Las Vegas

Early registration ends soon!

DeepEX 2020

Solving Deep Excavation Design

DeepEX 2017 talk to it and design your deep excavation!

Deep Foundation Software, Pile Rafts, Pile Groups

From soil estimation to axial and lateral pile capacity

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

From soil estimation to helical pile settlement estimation.

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
What do you want to design?
DeepFND 2020: Deep Foundation software (NEW: Pile-Group/Pile Raft Analysis!)
DeepEX 2020: 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
Snail-Plus 2019: 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

Free Webinar: Sep. 18, 2018 12:00 PDT (3:00 PM EST)

Design and analysis of 100ft soldier pile excavations for 2nd and Broadway Station in Los Angeles, CA

Presented by: Pirooz Barar, P.E., Babak Mamaqani, Ph.D. P.E., PB&A Inc


The Regional Connector Transit Corridor (RCC) and Westside Subway Extension, Purple Line (PL) are part of Los Angeles metro expansion projects and are both under construction. The presentation will highlight the design and construction methods utilized in the soldier pile support of excavation for the 2nd and Broadway Station. Predicted deflections are compared with actual readings. The 2nd/Broadway Station required a cut and cover excavation 500 ft long by 97 ft deep, underneath 2nd Street.

A decking system was integrated into the shoring system to accommodate live traffic during construction and provide lateral support at the top. The shoring system of the station consisted of soldier beams with tiebacks and/or struts. DeepEX was used as the primary software to design shoring system.

Soldier pile design in Los Angeles for 2nd and Broadway Station, free webinar

The stage construction feature in DeepEX allows user to model all construction sequences and design the shoring system for the most critical stage which may not occur at the final excavation stage.

The challenge in 2nd/Broadway station was to underpin LA Times building which was partially protruding into the station. A unique underpinning system, consisted of ground anchored concrete panels, was designed to support the building surcharge and prevent settlement. The initial design was slightly modified in collaboration with contractor (RCC-JV) to ease and expedite the construction. Extensive finite element analysis modeling was also performed to determine deformations during construction. Currently, excavation has reached bottom of the station and inclinometer readings were in consistent with predicted deflections and both shoring system and underpinning were efficiently supported the excavation.