The standard practice of building roads the world over entails identifying a contractor who has the capacity to build bitumen roads within the accepted standard procedures.
This practice was followed in Nyeri to the letter. We have used standard conditions of contract as per the FIDIC conditions. (International conditions of contract for engineering works).
Whatever standards are to be achieved have to be certified by the Central Region Materials Laboratory in Nyeri and whatever has been done has been subjected to those tests as per the specified standards and after the completion of the works, we usually wait for SIX MONTHS to observe all the defects related to the works.
After the six months, a schedule is prepared for all the identified defects which the contractor must make good (correct them) and a certificate of making good defects issued to the contractor and thereafter their retention money can be released.
After the works are completed during payments, retention money usually totaling 5% of the certified amount is usually retained.
Now, the chippings seen on the road that are being mistaken for peel offs of the road, are usually applied on the road deliberately after re carpeting so that they can be run over by the vehicles to help in the identification of areas of weaknesses if any and also ensure the finished surface has the required grip on the vehicle tires. On the areas reserved for parking lots, due to the fact that vehicles have not been running over them at the required speed, this process has not yet taken place.
The roads in Nyeri have been re-carpeted to the required standards and specifications and the process as explained above has to take place.