This short video clearly shows how to saw-cut an Allan Block to make a 90-degree bend. The block requires cutting so that it will fit perfectly when using the 6- or 9-degree batter blocks. This is a MUST SEE video if you build Allan Block retaining walls or sell them. Joseph Kowalski, P.E. www.RetainingWallExpert.com Current State PE Registrations
Drilled pier walls are constructed by drilling a shaft into the ground and then filling that shaft with concrete. The concrete is reinforced with steel. This is an excellent way to stop a landslide when the soil above the rock is sliding downhill. In this video, the piers are 3.5 feet in diameter and go down about 35 feet deep! Joseph Kowalski, P.E. www.RetainingWallExpert.com Current State PE Registrations
Everyone involved with a retaining wall project benefits when the wall is constructed properly. To make every effort that a retaining wall is constructed according to the design drawings, the Owner should hire the Design Engineer to visit the site. During Construction Review, the Engineer should compare the actual field conditions and materials to the design drawings. This video is a little longer than most (it’s about 7 minutes) but I promise it is full of good information! Joseph Kowalski, […]
To have a level, attractive, well-built MSE wall (block retaining wall) the first course of wall blocks MUST be perfect. The first course must be straight and level, both side-to-side and front-to-back. Any errors in the base course become amplified as the wall is built up. For the leveling course, you need to use a well graded stone that is compacted in place. After compaction, each block should be carefully installed making sure that it is level and it is […]
One of the most important things you can do when building a retaining wall is to ensure that the wall is in the correct location, and at the correct elevation. You never want to have to “move” a wall because it is a few feet from where it should be, right? Also, you want to place the blocks to ensure that you have sufficient room to install the geogrid layers. This video shows some easy ways to help you with […]
Pier walls and shoring walls can be constructed right up against a property line, because they are made of steel or concrete beams with wood or concrete lagging between the piers. But, these walls are not as attractive as a block retaining wall, so we engineered a way to attach the blocks to the shoring wall. The shoring wall is doing the work, the blocks on the front are just a veneer of block, stone and geogrids attached to the […]
These two retaining walls are made of BIG retaining wall blocks. Each block weighs a couple thousand pounds! At this site in Ohio, we engineered these walls so that the bridge deck could be placed directly on top of the retaining walls. This saved the county money and opened up an important connector across the stream. FOR PROJECT PHOTOS CLICK HERE Joseph Kowalski, P.E. www.RetainingWallExpert.com Current State PE Registrations
This retaining wall video shows best practices for using fences and guardrails along segmental block retaining walls. Summary – it is nearly impossible for a 75-pound retaining wall block to hold back a car, or a person pushing over a fence. You really need to put guardrails and fences behind the wall blocks. We recommend placing the fence or guardrail about 3 feet behind the retaining wall, unless you design a way to support the fence or guardrail without compromising […]
This 13.5-foot high gravity retaining wall was constructed using Redi-Rock blocks. This wall was an alternate bid on a project where a reinforced concrete wall was proposed. The engineering design, construction, and construction review services of this retaining wall saved the Owner money and resulted in a much more attractive wall than a simple, gray concrete wall. Joseph Kowalski, P.E. www.RetainingWallExpert.com Current State PE Registrations
Given the tight space constraints on many projects, Owners are looking to gain parking area wherever possible. When there’s a concrete block retaining wall with parking above, we lose space because of fences, guardrails, barriers and curbs. This Redi-Rock retaining wall system has the ability to squeeze a fence, curb and vehicle barrier into a 24-inch zone, measured from the FACE of the wall. Now that is really gaining some space! Joseph Kowalski, P.E. www.RetainingWallExpert.com Current State PE Registrations
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