Page 29 - Parquet International december 2014

Unfortunately, as confirmed by the facts, the technical instructions provided during op- erations to the men assigned to actually lay- ing the screeds were not sufficiently helpful. If what I was told is true, to the extent that I could hardly believe my ears, the quanti- ty of water used should absolutely have been controlled better, instead of advising the workers to add more, as these technicians ef- fectively did, without adequately monitor- ing the workplace subsequently and pro- viding it with at least the minimum pro- tection against gusts of
wind.
At any rate, the dam- age was done, and the question of how to re- cover the screeds for the purpose of con- taining the costs re- quired for the recovery of the rest of the work, which could have been very high, given the presence of climate control systems with panels embedded into the cement mix was not an easy one to solve: the “cracks” had to be previously filled, and this required them to be widened in “V” shape by inserting iron bars and then filling the space created with the appropriate sub- stances available in the market. The self-lev- eling screeds also had to be subjected to a re- starting cycle of the radiating heating sys- tem as specified by the standards in force in the sector (UNI EN 1264-1/2/3/4) and the entire cycle had to be brought to completion. This operation was not only absolutely advis- able but in my opinion indispensable, also be- cause the structural sit- uation of the screed could have led to fur- ther shifting and crum- bling of the cement mix in addition to ad- ditional cracks caused by shrinkage.
The second case
In the second case as well, the purpose of the technical inspection conducted in an apart- ment complex located in a historical big city TMcenter was to evaluate the condition of the laying surfaces in traditional concrete cast ex- pressly to underlie a solid wood parquet floor to be laid by total gluing.
Once again, the analysis was made by visu-
al method using a few manual instruments over a total cemented surface area of around 85 m2 on one of the building’s floors. R