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E-LETTER April/May 2005
BCD News Burns Cooley Dennis, Inc. (BCD) recognizes Mr. Eddie Templeton as a valued member of the engineering staff specializing in non-routine geotechnical analyses and designs. Mr. Templeton began his career with the Vicksburg District Corps of Engineers (COE) upon completing a B.S. in Civil Engineering at Mississippi State University (MSU) in 1978. While there he gained valuable technical experience in slope analyses, seepage-drainage, and settlement evaluations for levees, dams, and other navigation/flood control construction. Mr. Templeton completed a Masters degree from MSU in 1984 while at the COE. He followed his COE experience with a period at Tensar Earth Technologies in Mobile, Alabama where he designed various slope remediation and reinforced earth structures incorporating geogrid soil reinforcement and tie-backs. Mr. Templeton left Tensar in 1991 to begin his career at BCD, attaining partnership in the firm in 1992. Regional engineering and construction companies rely on Mr. Templeton's specialized experience in slope failure remediation and earth retention systems, including soil nailed walls, to develop efficient and constructible designs for such projects as Natchez Bluff Stabilization, LA 3132/I-49 Interchange Bridge Approach Embankment in Shreveport, Louisiana, and the I-20 Mississippi River Bridge in Vicksburg, Mississippi. Further demonstration of his technical knowledge is shown in the following publications authored by Mr.Templeton:
● "Computer Program for Determining Induced Stresses and Consolidation Settlements (CSETT)", Instruction Report K-84- 7, U.S. Army Engineer, Waterways Experiment Station, August 1984. ● "An Investigation of the Compressibility of Selected Soil Specimens Under One-Dimensional Loading", Masters Thesis, Mississippi State University, 1984. ● "Slide Stabilization with Gravel Trenches", International Conference on Case Histories in Geotechnical Engineering, May 1984. Co-Authors: E.G. Wardlaw, L.A. Cooley, R.L. Fleming. ● "Long-Term Failure in Compacted Clay Slopes", International Conference on Case Histories in
file:///C|/DIG_Clients/Burns%20Cooley%20Dennis/Old%20HTML/e-letter%20april-may2005.htm (1 of 4)4/26/2007 10:00:20 AM file:///C|/DIG_Clients/Burns%20Cooley%20Dennis/Old%20HTML/e-letter%20april-may2005.htm Geotechnical Engineering, May 1984. Co-Authors: G.L. Sills, L.A. Cooley. ● "Design and Construction of a 13.7 Meter (45 ft) High, 1:1 Geogrid Reinforced Slope in Highly Cemented Loess Soils", Geosynthetics '93, March 1993. Co-Author: Donald L. Powell.
Featured Issue - Soil Nailing There exists wide acceptance throughout the engineering and construction industry of the excavation and slope stabilization technique identified as "soil nailing". Utilized for stabilization in both temporary and permanent excavations or slopes, soil nailing includes a pattern of drilled and grouted small boreholes reinforced with a high strength metal rod, functioning in a similar manner to a retaining wall tie-back, but more passive in performance. Construction occurs as a top-down sequence - an initial 5 to 6 ft excavation is made, a row of soil nails installed, and steel reinforcing and shotcrete applied as a wall facing. Each nail has an attached steel plate at the surface which is locked into position once the grout and the shotcrete have gained strength. The sequence of construction continues at the next level down, and so forth, until the entire face of the excavation is complete. Various facias can be applied and various drainage techniques behind and within the system are incorporated.
The design and planning sequence for soil nailing typically includes:
1. geotechnical investigation
2. evaluate configuration of excavation - soil nails
3. stability analysis, both external and internal
4. evaluate seepage and drainage control
5. plan soil nail work sequence and layout
6. determine needed quality control measures
A prominent stabilization project featuring the geotechnical investigation and technical design and analysis capabilities of Burns Cooley Dennis, Inc. is the Bluff Stabilization in Natchez, Mississippi. The unique engineering properties of the loess deposits within the bluff overlooking the Mississippi River required innovative approaches to conventional slope stability analysis methods. Incorporation of a soil nail system and permanent soil anchors installed by Hayward Baker provided the most efficient system for long-term stabilization of the bluff.
Soil nailing is a highly specialized construction technique requiring well experienced and knowledgeable contractors to adequately plan and successfully complete a project. The following web sites represent some of the more prominent national soil nailing specialty contractors:
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Hayward Baker - www.haywardbaker.com
Nicholson - www.nicholson-rodio.com
Goettle - www.goettle.com
Schnabel - www.schnabel.com
We hope you enjoyed this issue of the BCD e-letter. If you would like to add someone to the e-mail list, please e-mail us and let us know. If you would rather not receive this e-mail, please let us know and you will be removed from the list.
www.bcdgeo.com
Corporate Office
551 Sunnybrook Road - Ridgeland, MS 39157 (601)856-9911 - Fax (601)856-9774
Construction Materials Facility
278 Commerce Park Drive - Ridgeland, MS 39157 (601)856-2332 - Fax (601)856-3552
Branch Offices
Biloxi - 13061 Hwy 67, Suite D - Biloxi, MS 39532
(228) 392-6881 - Fax: (228) 392-6984
Hattiesburg - 1402 Corinne Street - Hattiesburg, MS 39401
(601) 583-3536 - Fax: (601)583-3548
Memphis - 5271 Mendenhall Park Place - Memphis, TN 38115
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