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About Sean J Murphy, LA
Expertise
I can answer almost any question related to design, installation, pricing of landscaping and hardscaping. I am not a horticulturist though so I can not answer questions on pests or diseases of plants. I also can answer questions related to pools, water features, ponds, lighting, grading, drainage, walls, patios, decks and much more.

Experience
I have been doing landscaping since I was 8 years old. My family owned a nursery in Florida when I was a teen and I owned and operated several lawn and landscape companies over the years. I have since completed 6 years of in Landscape Architecture at Purdue University and have a Bachelors degree in Landscape Architecture. I have been practicing professionally for 13 years in Atlanta and the south east US. I have worked for some of the best and most well know firms and personalities in landscaping and my work has won many awards. I have worked for the likes of Disney, the 1996 Olympic games, and REIT Post Properties(Atlanta, Dallas, Austin, NY, Tampa, Orlando). I know many of the plants in Georgia and Florida plus surrounding states. I have passed the Georgia Landscape Architects Licensure Exam and can legally call myself a Landscape Architect Lisc. # 001156
I am currently the Department Manager of the Planning and Landscape Architecture Department of a local Multi-Disciplinary firm and used to own and operate Amenity Architects LLC. you may preview our work at www.amenityarchitects.com. My new employer is SoutheasternEngineering, Inc. see www.seenginering.com I am also part owner in the family business Murphy's Garden Art also see at www.murphysgardenart.com.

Organizations
American Society of Landscape Architects, Keep Smyrna Beautiful, ULI, Smyrna Downtown Development Authority, Smyrna Downtown Task Force,

Publications
Landscape Architect and Specifier News, Atlanta Homes Magazine, Landscape Architecture Magazine, Coastal Living, Magazine

Education/Credentials
Pinellas County Center for the Arts 1984 - 1988, Bachelors Degree in Landscape Architecture - Purdue University, 1994, Mike Lynn Graphics Workshop 1994, University of Georgia Wetland Delineation Certification 1995, Post University Mini MBA 2000, Edinburgh College of Art - 1 year co-op 1993, Intern Smallwood Reynolds Stewart and Stewart Architects Atlanta1993, ISA Certified Arborist 2009

Awards and Honors
ASLA Merit Award 1994 Mined Land Project IN, ACI 1st Place for Hardscape Design / Installation 1999 Biltmore Atlanta. Coastal Living Idea House Design 2005/2006. South Eastern Flower Show People's Choice Award for best garden design, Many more...too many to list.

Past/Present Clients
Disney Imagineers (while employed by others), Georgia Governor Roy Barnes, The State of Georgia, City of Suwanee Ga, City of Norcross Ga, City of Powdersprings Ga, City of Stockbridge GA, Post Properties, Bayfair Homes, John Willis Homes, Pulty Homes, Serenbe Development, Mayor of Smyrna-Georgia Max Bacon, Representative for Atlanta Falcons QB Michael Vic,


 
   

You are here:  Experts > Home/Garden > Exterior Decorating > Landscaping & Design > Retaining Wall Repair

Landscaping & Design - Retaining Wall Repair


Expert: Sean J Murphy, LA - 10/14/2009

Question
I have a 7 foot high cinder block retaining wall that was installed in front of an older cement block retaining wall that started to bow out.  There is a 5 inch space between the 2 walls.  Should this space be filled in with gravel? cement? or left alone?

Answer
Was the new wall installed with any steel reinforcing in the cores and then grouted with concrete? Was the new wall built with a substantial footing going back about 30" or more on the side where all the dirt is? Since you say there is an old wall behind it, I suspect not.
If not, the new wall will likely fail as the old wall pushes into it because it was not engineered or constructed properly. Without steel and a footing tied in with steel the wall is just like a bog board standing straight up. It has nothing to hold it there but its own weight.

But to answer your question, you don't need to to anything with the space between except to close it off from critters in whatever way works for you. However I suppose that adding concrete might make the hole apparatus stronger.

Good Luck

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