To what extent of corrosion must the tower foundation bolts reach before they can no longer be used?
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To what extent of corrosion must the tower foundation bolts reach before they can no longer be used?
It shouldn’t be usable when the value is smaller than the strength calculation diameter of the bolt, right?
Personally, I think the lifespan of bolts is longer than that of the feet; we include a large margin of safety in our calculations. Moreover, corrosion of bolts is less severe than that of the feet. If the tower needs to be replaced, the bolts must be checked, and the typical lifespan of a tower is 20 years.
Foundation bolts suffer little corrosion, as apart from the foundation portion, the other parts are generally protected by fire-resistant cement as well
How is the strength check of bolts calculated? Are there any empirical algorithms?
Should a professional inspection be carried out before taking any action?
Foundation bolts are almost corrosion-resistant, as except for the base portion, the other parts are covered by a layer of fire-resistant cement, eliminating the risk of oxidative corrosion.
It still depends on the calculated diameter given in the calculation sheet; inevitably, a part of the anchor bolts will remain exposed outside.
The foundation bolts of the tower are buried underground. Owner of the first floor, how do you determine the extent of corrosion? Do you have to dig them out of the ground to check the degree of corrosion before deciding whether they can still be used?
The design of the anchor bolts provides a large margin of safety, but attention should still be paid to the operating environment.