The road profile is very important in the construction of a dirt road and should be between 5% and 6% of a central crown. Compaction is done from the center out on both sides so that the integrity of the crown is not changed.
Drainage:
Table drains and culvert design are in the hands of the design engineer. Any fault in this area is not the fault of the product or the workers on the day of application.
Delamination:
Is caused by layers of soil being compacted at different moisture contents, and the use of heavy steel drum rollers usually in vibration mode. This will happen no matter what is used, from plain water to stabilization products, including lime and cement. Moisture content must be controlled at all times from wetting out the base to layers and final trim. Good work practices are essential. 

Compaction:
This is a large subject and has many different viewpoints held by academics and engineers worldwide. Almost all of these views are held and vented on non-plastic soils, and the teaching in general is to exclude clay from any construction where possible. For clay
areas where highway construction is in progress, all forms of compaction will be used, and mostly in this order: sheep’s foot, steel drum, and rubber tire.

PermaZyme and Dirt Road Construction:

Dirt road construction is low-cost and is the finished product. It does not usually come under the same strict design control as highways. Good work practices must still adhere to at all times. Ideally, all three-roller types should be used during construction, but excellent roads have been constructed using nothing but the steel drum roller, and the water truck used as the rubber tire roller. The point here is that a steel drum roller will bridge soft spots, but the wobbly tire roller will not. Potholes can be the result of poor compaction. Rubber tire rollers
give a better finish to fine soils, and dehydrate the moisture far more rapidly. (Heavy traffic will accelerate the curing, and help seal the surface.)
Rain:
Should be avoided at all times. If rain is expected on the day of construction, use the local knowledge available to gauge the extent of rain that is normal, and use as little water as possible to apply PermaZyme to the soil. Use the rain instead of the water truck and con-
continue to work the soil ready for compaction. It is most important that the road is fully compacted prior to leaving the site. If heavy rain suddenly appears from nowhere, and you are
in the middle of construction, simply grade all treated soil into one windrow and layout later, or when the rain stops, up to seven days after the application of PermaZyme. On returning, make sure the base has moisture content equal to the treated soil to be laid so that delamination does not occur. PermaZyme at 10,000 to 1 in the water truck during this procedure will help ensure sufficient.