Tuesday, October 16
8 am – Noon | Concurrent half-day Short Courses (choose one)
Knowledge for Better Design of Geosynthetic Reinforced MSE Structures
Instructor, Michael Simac, EARTH Improvement Technologies
This course is intended for geotechnical, civil, and structural engineers who wish to expand their abilities to plan, analyze, design and investigate geosynthetic reinforced Mechanically‐Stabilized Earth (MSE) structures. Previous MSE design experience is helpful but not required. After a brief introduction of MSE design guidelines and procedures, this session will focus on the most common problems associated with poor MSE structure performance, and how to address those issues from an engineering design perspective. This knowledge of past experiences will allow designers to focus their analytical, investigative, observational, and geotechnical data interpretation techniques to improve performance on future MSE designs, through more focused design procedures, better construction drawings and details, specifications, internal drainage design, and quality assurance testing for special inspection requirements. The MSE designer’s interaction with the project team; Owner, Contractor, Architect, Site/Civil and Geotechnical Engineers, will be discussed as to its effects on site planning, utility location and performance, and overlapping design / professional responsibilities.
Designing with Geosynthetics – Construction Protocols
Instructor, L. David Suits, LDS Geosynthetic Consulting Services
The course is intended for geotechnical, civil, and environmental engineers, construction contractors, and other personal involved with constructing with geosynthetics. After a brief review of the types of geosynthetics and the applications for geosynthetics in roadways, the proper construction protocols and the importance of following the correct protocols will be presented. The areas that will be discussed include drainage, erosion control, pavement overlay, embankments, and reinforced soil slopes. As good construction depends on good, clear specifications, there will a brief review of geosynthetic specifications. There will also be a presentation on sustainable construction with geosynthetics.
12:15 – 1:30 pm | Lunch – Discussion Panel
Incorporating Geosynthetics in the Enhancement of Transportation Infrastructure in Texas
Panel members TBA
1:45 – 3:30 pm | Technical Lectures
Use of Geosynthetics in Airport Pavements
Benjamin Mahaffey, P.E., Civil Engineer, FAA
The FAA issued the draft Advisory Circular 150/5370-10H, which includes language regarding the use of geosynthetics. In parallel, the FAA’s Airport Pavement R&D Section started research into the structural/performance improvements that these geosynthetic products may provide within an airport pavement structure. This presentation will discuss; on-going research, proposed full-scale accelerated pavement tests at NAPTF, and future goals for incorporating geosynthetics within FAA specifications.
Capillary and Moisture Control in Roadway Structures using Wicking Geotextiles
Brian Baillie, P.E., Engineering Business Manager, South Central Region, Tencate
This presentation will review the effects of capillary rise on foundations and various subgrade soil materials. It will also review new research available and present solutions commonly used in the past, along with newly available technologies used to minimize or mitigate the effect of capillary rise on geotechnical foundation systems.
Effect of Differential Settlement on the Performance of the GRS-IBS
Murad Abu-Farsakh, Ph.D., P.E., Research Professor, LSU/LRTC
This presentation covers the FE numerical results of the performance of GRS-IBS due to differential-settlement underneath the reinforced soil foundation, underneath the reinforced zone, and underneath the retained soil in terms of reinforcement strain, lateral facing deformation, the bump at the approach roadway – bridge slab intersection, and lateral facing pressure. Four differential settlement (2, 4, 6, and 8 in.) were selected in this study under three different service loading conditions.
3:30 – 5:00 pm | IFAI Expo / CAMX Showfloor Tour beginning in the Geosynthetics Pavilion (IFAI Show Floor)
5:30 – 7:30 pm | IFAI Expo Opening Reception
Wednesday, October 17
8 – 9 am | Morning Plenary
The U.S. Army Corps of Engineers Role in Advancing our Nation’s Infrastructure
Jeb Tingle, Research Civil Engineer, U.S. Army Research and Development Center
9:15 – 10:45 am | Panel Discussion – Organized by Geosynthetic Materials Association (GMA)
Geosynthetic Solutions for Levee Infrastructure
Panel members: Doug Brown, Tensar; John Lostumbo, Tencate; Mike Bernardi, Strata; TBD, Propex; TBD, HUESKER
11 am – Noon | Technical Lectures
Reinforced Soil Slopes
Sachin Mandavkar, Technical Manager, Maccaferri
Traditionally, grade changes are created with embankment or vertical retaining wall structures. Conventional embankment slope requires large footprint area which is a concern in case of rights-of-way limitation. Reinforced soil slope (RSS) is an economical alternative to conventional embankment slopes within limited rights-of-way and MSE walls. Cost-benefit and other advantages are discussed in this presentation with case histories of RSS in highway application.
Design and Construction of Geosynthetic Stress Relief Wall for US Bank Stadium
Stephan Gale, Gale-Tec
The new 1 Billion-dollar Minnesota Vikings Stadium required 40 ft high perimeter foundation walls. Because of weathered poor-quality bedrock, a cast in place concrete wall would require a large footing for overturning resistance. The solution that saved $5.5 million dollars was a Concrete Block basement wall with a Geosynthetic reinforced Geotextile wrapped Stress Relief Wall that was offset from the basement wall by 3 ft. The presentation will review design and construction.
12:15 – 1:15 pm | Lunch
1:30 – 3:15 pm | Technical Lectures
Marsh Land Shoreline Protection – Buoyancy Compensated Erosion Control Modules
Austin Huang, Ph.D, P.E., LG, D.GE, F.ASCE, Principal, Merit Engineering
BCECM (Buoyancy Compensated Erosion Control Module) system is specifically Custom designed for Louisiana Shoreline marsh land and 500´ was installed and tested for 3 years (2014 – 2017) under prevailing storm conditions in the LA-0016 Non-Rock Alternative to Shoreline Protection Demonstration Project with USDA-NRCS. Seven surveys have shown that the BCECM controlled shoreline erosion and stopped over 90% of the devastating loss of shore lands. It effectively and consistently reduces wave energy.
Statement on the Long-Term Flow Rate of Multi-linear Drainage Geocomposites to Landfill Leachate
Pascal Saunier P. Eng., Business Development Manager – East, AFITEX-Texel Geosynthetics inc.
Tubular drainage geocomposites permit to increase the performance of landfill leachate collection systems and limit the hydraulic head on both primary and secondary liner systems. This presentation reviews the results of long term biological and hydraulic conductivity testing on tubular drainage geocomposites carried out in Europe, Africa and USA with the Geosynthetic Institute.
GCL- Not only a Clay Layer in between Geotextiles
Ismail Coksayar, Managing Director, Geomas Geokompozit San. Muh. Tic. A.S.
In this presentation, different design and application issues with geosynthetic clay liners (GCLs) will be discussed along with the solutions GCLs offer. The basic design of the carrying layer, bentonite layer and cap layer can be changed to fit a particular application. Bentonite liners, polymer-enhanced materials, reactive liners and organoclay liners will be presented together with alternative carrying and cap layers.
A Next Generation Geomembrane Solution for Water Management at the USACE Engineer Research and Development Center
Andy Durham, P.E., Senior Geosynthetics Engineer, Owens Corning
The Engineer Research and Development Center (ERDC) at the U.S. Army Corps of Engineers facility in Vicksburg, MS is home to the Rapid Repair Levee Breach facility, used to simulate emergency levee repairs during substantial hydraulic events. This facility was constructed in 2009, but fell into disrepair after a liner failure and subsequent erosion and sedimentation damage. Due to schedule and budget constraints, the ERDC agreed to an innovative solution for lining one of the storage basins at the facility. A prefabricated Reinforced Composite Geomembrane (RCG) was installed, saving significant time and labor over a conventional, field-welded geomembrane. With substantially higher strength, puncture, and tear resistance than conventional materials, this liner provided the required performance with a rapid, cost-saving installation technique.
3:30 – 5:00 pm | GeoDallas Reception in the Geosynthetics Pavilion (IFAI Show Floor)
Speakers subject to change.