If you buy wine that way consider stacking wooden boxes but not too high.
Earthquake proof wine cellar.
If the wine racks are high to fit high roofed wine cellars bolts can be placed at the top middle and lower parts of the wine rack.
Doing this will secure both the wine racks and the wine bottles.
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Used metal wine racks with black finish.
These wine racks are designed with a 6 1 2 degree angle sloped to the rear which is mounted against the wall.
You mention wine racks but one of the safest places for wines in an earthquake is in a wooden box.
Converting a storage room to a wine cellar.
Protected wine collection by using special straps to secure bottles to the racking.
Same thing with cardboard boxes keeping the wines low to the ground will help eliminate some damage if that works for you.
Here at wci we carry earthquake resistant wine racks that can certainly help give a better degree of protection for your racks during earthquakes or other similar types of occurrences.
By doing this you can prevent your bottles from falling on the floor and shattering which also saves the surrounding bottles from label damage.
To make an earthquake resistant wine cellar you need to keep your bottles locked in place using padding and custom cabinets.