Geosynthetic Reinforced Mechanically Stabilized Earth (MSE) Walls

*Open only to Central Ohio Section Members
*Seating is limited to the first 25 people
*Bring your own lunch

Precast concrete block and vegetative faced retaining walls reinforced by geogrids or geotextiles are in a period of enormous growth. Estimates are that 35,000 of these walls exist and that they accommodate the entire range of practical design considerations. This webinar gives a perspective on the evolution of retaining walls in general and follows with results of a recent cost survey. It is seen that geosynthetic reinforced MSE walls are the least expensive of all wall categories and at all wall heights. Three design methods are then compared to one another using a numeric example showing that the modified Rankine method is the most conservative, the FHWA method is intermediate, and the NCMA method is the least conservative.

A survey of walls which suffered either excessive deformation or actual collapse is included. The causes for these cases of inadequate performance are (i) backfilling with fine grained silt and clay soils, (ii) lack of adequate quality control and inspection, and (iii) lack of proper drainage routing and control. The presentation includes a discussion of improper procedures with respect to these concerns. Lastly, the transition from precast concrete block to vegetated facings is illustrated by many actual situations in the transportation, geotechnical and geoenvironmental areas.

RSVP to newsletter@centralohioasce.com by Friday, September 20, 2013.

See the ASCE website for more info.

The Central Ohio Section of ASCE sponsors free continuing education webinars as a service to our members. These webinars are produced by ASCE and normally cost $250 or $300 for ASCE members. However, the Central Ohio Section is paying the registration fee and inviting any interested section members to attend for free. Just RSVP to newsletter@centralohioasce.com by the deadline. Seating is limited, so do not delay.

You can see the complete list of webinars available from ASCE National on their website. If you see one you like, let us know. If you and your company would like to host one, let us know that too. If you open it up to any interested Central Ohio ASCE section members to come, we will pay the registration fee.