SHORT ANSWER
START WITH THE GAZEBO MANUFACTURER.
Use the anchoring method and minimum requirements specified for your particular gazebo. A number that is appropriate for one frame, site or weather condition may be inadequate for another, so do not treat a generic weight-per-leg figure as a universal safety rule.
WHAT CHANGES THE ANSWER?
THE IMPORTANT VARIABLES.
Frame strength, leg layout and canopy shape vary between manufacturers.
A larger canopy presents a different loading profile from a compact gazebo.
Sidewalls can catch more wind and materially change the anchoring demand.
Soft ground may permit pegs; concrete and asphalt usually require a hard-surface method.
Open fields, waterfronts and corners between buildings can experience stronger or channelled gusts.
Forecast wind and changing local conditions affect whether the gazebo should be used at all.
LUMPET CAPACITY
UP TO 20 KG PER BAG. STACKABLE FOR MORE.
Each Lumpet holds up to 20 kg of sand. For a four-leg setup, one fully filled bag at each leg provides up to 80 kg in total. If the equipment guidance or site plan calls for more at a leg, additional Lumpets can be stacked when the equipment layout and stability allow.
These figures describe product capacity, not a claim that a particular weight makes every gazebo safe. Use the capacity within the manufacturer's anchoring plan and the actual site conditions.
DISTRIBUTION
TOTAL WEIGHT IS NOT THE WHOLE STORY.
How the weight is distributed and connected matters. A large total placed on only one side is different from an anchoring plan applied at every required leg. Keep each weight secure, inspect the connections and reconsider the setup whenever conditions change.