Tel: 1-206-279-3300

Upcoming Workshop Series

60 hours

Data, databases, and Machine Learning for Geotechnical Engineers

Data, databases, and machine learning for civil engineers

Sep, Oct, Nov, Dec 2020

The future of civil engineering is approaching

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

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

Geotechnical Investigation - New York - New Jersey

Good quality geotechnical investigations are very crucial to the success of every construction project. A proper geotechnical investigation will identify underground and soil conditions and will determine the proper geotechnical design parameters. Unfortunately, many projects lack a proper geotechnical investigation. As a result, engineers are all too often forced to use overconservative design parameters. In a worst case scenario, an inadequate geotechnical investigation will not properly identify soil conditions and will result in "unexpected" delays, failures, and added construction costs.

A good quality geotechnical investigation identifies:

a) Soil layers and types, bedrock elevations if possible

b) Soil density and strength, as well as other mechanical soil properties

c) Ground water conditions

d) Obstructions and existing underground structures

A soil investigation may include the following items:

1. Reconnaissance 2. Exploration 3. Field Tests
Visual inspection Geophysical Penetration tests
Airphotos Electrical Vane tests
Geologic reports and maps Pits - sampling and testing Water table - pore pressure tests
Records of past construction Borings - sampling and testing Pumping tests
Load tests
Compaction tests

The above geotechnical data are then assessed for risks posed by site condition and used in designing earthworks, structure foundations. A proper geotechnical investigation will also aid in properly identifying critical points to monitor during earthwork and foundation construction.

Geotechnical site investigations are almost always needed in major projects and help gain an understanding of the project area. Soil and rock samples are typically collected with a dril rig and appropriate samplers. The soil samples are then transported to a geotechnical laboratory where a number of geotechnical tests are carried out. In situ tests typically include the Standard Penetration Test and the Cone Penetrometer Test.

The Standard Penetration Test is one of the oldest geotechnical field tests. It is an in-situ dynamic penetration test designed to provide information on the geotechnical engineering properties of soil. It involves the insertion of a standard sampler within a borehole. The rods are hammered with a standard 140lb weight that drops a distance of 30 inches. The number of blows required for driving the sampler through three 6-inch intervals is recorded. The sum of the blows over the last two 6-inch intervals is referred as the Standard Penetration Number.

Deep Excavation LLC provides competitive geotechnical engineering services for any sized project. We are licensed in the US and in Europe. Through our associate network we can extend our services all arround the world to meet your needs.

Please contact us for more information