All concrete cracks. So one doesn't have to worry about hairline cracks. If it is an old structure, cracks may develop because of corrosion of reinforcment bars. One should open up the plaster/concrete cover and check for the amount of corrosion. If it is nominal, one can plaster up again with waterproofing chemical. If the corrosion is more, there are methods of strengthening a beam. One should have this beam inspected by a structural engineer. If such hairline cracks have developed along with excessive deflection at the mid-span section of a beam. One should vacate the building and get it strengthened by a structural engineer.
Yes, the hairline crack in a crockpot liner can be repaired.
I've never heard of a crack in the column but since it has something to do with the steering, I would have it at least looked at.
NO
The only thing I can get from that question is that there is a hairline crack in the cap.
apparently
Hairline fracture
depends on age etc but about 4 weeks
Yes it will crack. I think any and all concrete will crack. Maybe not enough to leak water but hairline cracks. Coat your pool with good waterproof sealant if leaks start.
The tank would have probably have been distressed in the past. A hairline crack may not be visible for a long time, then suddenly appear, as if the crack appeared for no reason.
if its not a safety hazard, you can leave it, but if it bothers you, it can be replaced if you still have some extra tiles
Replaced,no question.
You perhaps have a hairline crack in your distributor cap?