How are 7-13 Foot Beach Umbrellas Measured?
All beach umbrellas are measured around the top curve of the canopy. A 7 to 7.5 foot umbrella can fit up to 4 people seated upright. A 7 to 7.5 foot umbrella is also good for two people reclining in loungers.
Expect these umbrellas to weigh between 6 and 14 lbs, depending on the materials used in the umbrella design. For example, wood umbrella poles weigh as much as 3 to 4 lbs more than beach umbrellas with aluminum pole. For more strength than aluminum, consider a steel pole and figure in an extra pound.
Besides the pole, the ribs or umbrella skeleton are a consideration when calculating the technical specifications of beach umbrellas. Fiberglass ribs are considered the best choice for high wind. The ribs will flex with the wind but not bend permanently. They are also lighter than steel umbrella ribs.
A built in anchor can add up to half a pound. Marine grade acrylic fabric can also add 5 pounds to an umbrella compared to lighter weight polyester.
The next two sizes, 8 and 9 foot beach umbrellas, are pretty much the largest umbrella that is conveniently portable for beach use. These large beach umbrellas are great for groups of 6 to 8 people seated upright or seated on beach towels. Two adults in lounge chairs will be comfortably shaded with an 8 foot to 9 foot beach umbrella. Expect an extra large beach umbrella to weigh between 9 and 16 pounds. But of course, the materials used in the design will make the weight vary.
Beach umbrellas in the 7-9 foot umbrella category have different diameter poles ranging from 1.25 inches to over 1.5 inches. The standard sand anchors and umbrella mounts are 1.37 inches thick which would accommodate only some of the umbrellas in the 7-13 foot umbrella category. Make sure you check the diameter of the pole before purchasing the umbrella anchor or sand grabber.
Built-in anchors are common with some of the aluminum pole 7.5 and 8 foot beach umbrellas. Larger umbrellas may have a wood pole because they are considered stronger than aluminum. Wood umbrella poles are not available with built in sand anchors. However, if you like the wood look, umbrellas with wood grain finishes on the pole and wood like ribs are available. They are generally called market umbrellas and some have built-in anchors or can fit in a sand anchor.
Umbrellas 10 feet and larger are generally considered commercial or concession grade patio or sidewalk umbrellas. The majority are made for patios, pools or decks and are designed for permanent mounting or for use with an umbrella base.