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The various zones and components of a typical  LOCK+LOAD faced wall are illustrated in this section.   LOCK+LOAD has unique aspects that require different construction procedures than other MSE walls. First and most importantly, LOCK+LOAD  allows and  requires full compaction all the way to the face of the  wall  (back of the panel). Also, each row of  LOCK+LOAD is founded upon the compacted fill of  the row below.  Download a detailed Installation Procedures as a PDF. The following sketches illustrate general concepts  and procedures for installation of a LOCK+LOAD   fascia on an MSE wall. 
1. Set and Align Base Row  Begin at a corner and align the first row of  LOCK+LOAD modules to a string line, on a prepared  foundation grade, with the panel backs plumb.  Panels can be easily plumbed by tilting the  counterfort and hand grading as needed. 
2. Place Module Fill & Compact  Once the modules are aligned 3/4” crushed rock is  placed in the counterfort zone to a depth of ~2/3  panel height and compacted the reinforced zone fill is then placed to a like elevation. Compaction begins  over the tail of the counterfort  and then moves toward the wall face and then back  to the end of the reinforced zone.
3. Place Geogrid Soil Reinforcement Place the first layer of geogrid with the strength axis  perpendicular to and abutting the wall panel. Again note, that the geogrid is turned up and touches the panel back. This row is then backfilled, and  compacted to the panel top to prepare the base for  the next row of LOCK+LOAD modules. 
4. Set and align Next Row  The second row of LOCK+LOAD modules are  aligned just behind and level with the top of the  row below. Once alignment is set the panel backs  are easily plumbed by tipping the counterforts and  grading as required.   Place & compact module and reinforced zone fill  as before. When complete a third tier can be set  and aligned. 
5. Place Geogrid per Plans  Geogrid is always placed per the engineered wall  design but typically is at the panel midpoint on  every other row of LOCK+LOAD modules begining  at the second row from the wall top.   Grid is to be placed flat and free of wrinkles. 
6. Continue Wall Erection to Final Height  Backfill, compaction, and LOCK+LOAD module  placement proceeds row by row until final wall height  is reached and the wall construction is complete.
Module Fill
Geogrid
Counterfort 
Reinforced Zone
Panels
Graded Foundation
Installation