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COLORADO
CTL|Thompson, Inc. Corporate Offices
7306 South Alton Way
Centennial, Colorado 80112
(303) 825-0777 phone
CTL|Thompson Structural Engineers
Denver, Colorado 80204
(303) 825-0777
CTL|Thompson Materials Engineers, Inc.
Denver, Colorado 80223
(303) 825-3207
CTL|Thompson, Inc.
Colorado Springs, Colorado 80918
(719) 528-8300
CTL|Thompson Structural Engineers
Fort Collins, Colorado 80524
(970) 206-9455
CTL|Thompson, Inc.
Glenwood Springs, Colorado 81601
(970) 945-2809
CTL|Thompson, Inc.
Pueblo, Colorado 81008
(719) 595-1287 phone
TEXAS
CTL|Thompson Texas, LLC
Dallas, Texas 75220
(972) 831-1111
CTL|Thompson Texas, LLC
Austin, Texas 78757
(512) 832-8883
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SHARING OUR EXPERIENCE
Our leading experts have authored numerous white papers that have been presented to and published by industry associations and trade organizations in their various publications. Please click on the article to submit a request for the full report.
White Papers Available:
Author: Howard A. Perko, P.E.
Synopsis: A theoretical model is developed to support the well known
empirical relationship between capacity and torque for helical
foundations and anchors. The model is applied to determine the capacity
and installation torque for several helical foundations and anchors of
different geometric configurations.
Authors: Howard A. Perko, P.E.; Robert W. Thompson, P.E.
Synopsis: The objectives of the present investigation are to augment the
validity of the empirical suction compression index relationship, and
expand its applicability to relatively undisturbed samples from the
Denver, Colorado area.
Author: Howard A. Perko, P.E.
Synopsis: The use of helix piers in compression for foundations has increased considerably over the last 20 years due to their ease of use and speed of installation. Despite their increased use, there remain unresolved concerns about their buckling resistance in weak soils and their lateral capacity.
Author: Howard A. Perko, P.E.
Synopsis: In order that helix foundations provide support for the design life of a structure, it is important that they be protected from corrosion. Galvanizing is the most often incorporated method of corrosion protection used by helix foundation manufacturing companies.
Author: Howard A. Perko, P.E.
Synopsis: Construction in urban environments often requires working in close vicinity to existing structures. Underpinning of adjacent buildings and shoring of excavations can be challenging components of these projects. A case study involving underpinning, excavation, and shoring activities associated with a new underground MRI Facility is presented.
Authors: Robert W. Thompson; Howard A. Perko; and William D. Rethamel
Synopsis: Swelling pressure is defined many ways and is dependent on the testing procedure. Along the Front Range area of Colorado swelling pressure is usually determined using an oedometer and loading the sample after swelling.
Authors: Ronald M. McOmber, P.E., David A. Glater, P.E., C.P.G.
Synopsis: Deep sub-excavation is being widely used in the Denver area as a means to reduce risk of poor foundation and floor slab performance due to heave of expansive soil and bedrock. The method was first applied in the mid-1990s in expansive, steeply dipping bedrock in north-central Jefferson County, near Golden, Colorado.
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