Cast in many industrial products have long been used mortgages (anchor) bolts with special heads, such that not only pull, but rotate can’t.
With the advent of high strength composite self-hardening compositions that bolt you can “lay” in the body of the finished product (plastic or metal) and making it pre-nest, and then simonaityte.
Recommend to read
VALVE FROM THE FLOOD
There are cases of disconnection of water in homes for a long time not only for repair of water system, but also for its economy. Such breaks is fraught with the danger of flooding the...
NOT OUTSIDE, BUT INSIDE
In winter, a suit for window boxes"refrigerators" to store perishable products. It is not very convenient for many reasons: it is necessary to open the Windows; the produce into the...