09:07PM | 08/30/03
Member Since: 08/30/03
1 lifetime posts
Where do I start? My dh built a retaining wall with Allen Block Stones. The wall is 3 stones high plus a cap stone. My dh compacted gravel in the base and behind the wall. Then we added soil as we are using it as a planter. A drainage tube runs along the length of the wall (38'long).

I just found out that my dh never used any landscape fabric (not mentioned its use on the Allen Block website) between the gravel and the soil. Should I put him thru the agony of removing the soil and gravel, lay down the landscape fabric and then load in the gravel, cover gravel and then put in the soil? What kind of disaster could result from my dh's ignorance?

Also, I noticed on the Allen Block website that a reinforcement grid is needed for every 2 blocks in height. We are 3 blocks. Home Depot told us we didn't need it. Allen Block suggests we do. Is this a cash cow for Allen Block? Is it really necessary? Each stone is not quite 1' high, and the cap stone is about 3".


02:16AM | 09/02/03
Member Since: 01/14/03
265 lifetime posts
The landscape fabric between the gravel backfill and the native soil and loam serves to keep the fine particles in the native soil and loam from migrating into the gravel when rainwater infiltrates into the ground on its way to the drain pipe. Without the fabric, eventually the gravel may, keyword here is "may", become clogged with these fine particles and slow the drainage. In an application like you describe, I'm not sure that I'd go to the bother of tearing everything up now that it's complete to add the fabric. If you wall was twice the height, then I'd suggest fixing it.

As to the geogrid reinforcement fabric, with a wall only three blocks high, unless the load behind the wall is a hill that rises many feet at an extreme angle, again, I wouldn't worry. Installing the fabric requires that you excavate back into the slope behind the wall for a distance prescribed by the block manufacturer and then laying the fabric and backfilling over it. That can require removing a significant part of the slope behind the wall. If the land behind your wall is fairly level, or even just slopes gently, don't bother.

[This message has been edited by treebeard (edited September 02, 2003).]

Click_to_reply_button Inspiration_banner


Post a reply as Anonymous

Photo must be in JPG, GIF or PNG format and less than 5MB.


type the code from the image


Post_new_button or Login_button

A Washington State couple called on BC&J Architects to transform their 400-square-foot boathouse into a hub for family bea... Built on a rocky island in the Drina River, near the town of Bajina Basta, Serbia, this wooden house was cobbled together ... Large steel-framed windows flood the interior of this remodeled Michigan barn with daylight. The owners hired Northworks A... Edging formed with upside-down wine bottles is a refreshing change. Cleverly and artistically involving recycled materials... If you’re up for a weekend project, why not try turning an old picture frame into scaffolding for a living wall? Low-maint... Similar to the elevated utensil concept, hanging your pots and pans from a ceiling-mounted rack keeps them nearby and easy... For windows, doors, and mirrors that could use a little definition, the Naples Etched Glass Border adds a decorative flora... The thyme growing between these stepping stones adds a heady fragrance to strolls along this lush, low-maintenance garden ... Decoupage is an easy way to add any paper design to your switch plate, whether it is wallpaper, scrapbook paper, book page... Twine lanterns add pops of crafty—but sophisticated—flair to any outdoor setting. Wrap glue-soaked twine around a balloon ... When securely fastened to a tree or the ceiling of a porch, a pallet and some cushioning make the ideal place to lounge. V... Reluctant to throw away any of those unidentified keys in your junk drawer? Hang them from a few chains attached to a simp... A stripped-down model, sans screened porch, starts out at $79,000. Add the porch, a heated floor for the bath, and all the... Salvaged boards in varying widths and colors make up the dramatic accent wall in this attic space. The high-gloss white of... Need a window and a door in a tight space? A Dutch door with a window may be your answer. These useful doors are split hor...
Newsletter_icon Google_plus Facebook Twitter Pinterest Youtube Rss_icon