I've been toying with the amount of overhang that I'm going to shoot for and thought that some of you might enjoy checking this calculator that figures an "Overhang Annual Analysis ". This helps you determine the amount of overhang you need above your window for either shading the window at specific times or allowing sun to shine in at specific times. This graphs out the entire year focusing on the 15th of each month and for each hour of the day.
You'll need to input your latitude which can be found by using this google map app... Google Maps Latitude, Longitude Popup This starts in Europe so you'll have to drag back to the USA. Simple clicking on a location gives the exact longitude/latitude. With the satellite overlay you can easily get really close to your location.
The overhang calculator is pretty easy to use. You can click on each label and a description of that value is explained. It's a really neat application.
Using the calculator I'm going to shoot for southern windows that are 4' tall and 2' below the lowest part of a 2' overhang. This will give me complete shade from May to August, 24% shading in March, 41% in September, and less than 10% shading in October. From November through Februrary the southern windows will receive full sun.
I'm still toying with my west window...trying to figure out a compromise between cool shade in the hot south Alabama summer and getting some warm afternoon sun coming in in the winter.
Anyhow, just thought I'd pass this on in case anybody was interested.
Best wishes,
Ed
You'll need to input your latitude which can be found by using this google map app... Google Maps Latitude, Longitude Popup This starts in Europe so you'll have to drag back to the USA. Simple clicking on a location gives the exact longitude/latitude. With the satellite overlay you can easily get really close to your location.
The overhang calculator is pretty easy to use. You can click on each label and a description of that value is explained. It's a really neat application.
Using the calculator I'm going to shoot for southern windows that are 4' tall and 2' below the lowest part of a 2' overhang. This will give me complete shade from May to August, 24% shading in March, 41% in September, and less than 10% shading in October. From November through Februrary the southern windows will receive full sun.
I'm still toying with my west window...trying to figure out a compromise between cool shade in the hot south Alabama summer and getting some warm afternoon sun coming in in the winter.
Anyhow, just thought I'd pass this on in case anybody was interested.
Best wishes,
Ed
