For pleasure or for commercial promotion, patio umbrella has become a popular apparatus. Mini-tents could not compete with the patio umbrella that is light and easy to transport.
To derive the maximum utility value of these patio umbrellas, it is necessary to know the making of this simple device. The base of the patio umbrella that serves as anchor is like the foundation to a building.
Primarily, the base of the patio umbrella keeps the equipment anchored securely to the ground stopping it from tipping or floating. Two different types are in use; one along with a table and the other bare without any support. Table forms are an additional support to keep the patio umbrella from tipping and falling.
An umbrella with a longer center pole will need a heavier base, if it is freestanding. The weight of the base plate should be about 50 kg to hold a nine feet freestanding umbrella. Instead of having castors that can be locked, it is better to have an extension of the center pole that will penetrate the ground to give additional support to the stability.
Varieties of materials find use in making of the base plates. Most common materials used are castings of aluminum and iron, fabrications of mild steel and stainless steel and quite a few cheap metal alloys. Base plates are made with different shapes of square, rounds and multifaceted shapes like hexagon etc.
In case you think that the commercial quality is costly, you can make your own base for patio umbrella, from materials available in the garden. A big flowerpot having a height of 10\” and a circumference of 12\” to 18\” will be enough to make a solid base for the umbrella.
The flowerpot may be placed on a level ground with its maximum sized end below. If there is no opening at the top, make one large enough to generously accommodate a PVC pipe you may be having. Pour quick setting concrete through this all the time compacting and keeping the pipe at the center.
If you care for aesthetics, you must buy from the market only, with nice designs and shapes. General norms for the base will be in the order of the weight versus canopy circumference: 6\’ needs 30 kg weight; 9\’ needs 50 Kg and 12\’ needs 75 kg weight to keep the stability of the patio umbrella.
These ratios of weight versus area of canopy will vary in case of offset patio umbrella. There is no center pole in this. The stand is attached to the base by a pole from which the stand projects to hang the canopy of the umbrella, from the top.
In case of offset patio umbrella, these norms will change largely as the cantilever mechanism could be supported with different weight ratios and positioning.
As there is no center pole in these offset umbrellas, the stand will be projecting from the pole of the base allowing the umbrella portion to hang from the top. This model is becoming very popular as it allows more space to move around.
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