This year I’m re-landscaping the backyard out of necessity. Prior owners installed ceder trees and juniper bushes which means that each year allergy sufferers live for a month within the “life-in-death” nightmare described by Samuel Taylor Coleridge. It’s nearly hell!
They also poorly engineered a deck and built it without a permit and mounted it to the foundation of the house. What I mean is the numskulls took the protective siding off the house and without flashing or caulking just bolted the deck beams into the sill plate and stem wall. It’s now rotted and needs to be replaced. We knew the yard needed work when we bought the house, but the expense is insane! For removing rocks (that were put down directly in the dirt… that means without any tarp or weed guard), tearing down a rotting deck, removing several of the ill-placed deck posts, regrading the lawn for drainage and installing a new sprinkler system (the old one died) the cost went over $9k.
Word to the wise out there… clearing out a yard can be as expensive as putting in a new one. This holds particularly true if the previous owners didn’t think ahead, didn’t pull any permits, and didn’t do the yard right.
So since we have to invest so much money into the yard, I’ve thought of doing some magic on it. If Disney could make a castle look bigger than it really is, why can’t I make a yard look bigger, too?
The August 15th 2010 post on Ray Kleim’s Haunted Dimensions about Fred Joerger made me think about how this could be done. Objects at the back of the yard need to be slightly smaller and slightly up hill compared to items closer to the door and windows of the back yard. To avoid flooding issues, I refuse to grade the yard to slope uphill from the house, but placing items such as bird baths on a brick to raise it an inch is doable. Here’s the “formula” I discovered. Whether it’s the correct math or not, I don’t know. It’s just from observation.
The size of the distant item can be mimicked by a smaller yet closer item of size X when the percent difference of the two objects are reflected by the distance between them (Distance B) and the distance of the smaller item to the eyes of the beholder (Distance A).
Viewer …[distance A]… Small Item …[distance B]… Large Distant Item
Viewer …………………[Total Distance]……………… Large Distant Item
If the small item is 50% the size of the large item, distance A and B are the same. If the small item is 25% the size of the large item, distance A is 25% of the Total Distance. To create a perceived distance that extends my back yard another 5 feet, the fence plank dimensions along the back need to be reduced by a percent of B/T given that B = perceived additional distance and T = total actual + perceived distance.
Since my yard from the back door to the back fence is approximately 45 feet, the formula would be 5/(45+5) or 5/50 or 10%. So if the planks are 6′x6″, I would shave 10% off of all sides, making them actually 90% their actual size. This would require shaving roughly 7″ from it’s height and 1/4″ from each side of the plank. To make it look near perfect, I’d need to raise the ground along the back fence by 3″ to 4″. As mentioned before, I don’t plan on regrading the yard, but I could add a couple of inches more rock along the bottom of the fence.
What would all this achieve? The perception, from looking out the back windows of the house, of a yard that’s 225 sq feet larger than it actually is. The trade-off is that from the back of the yard looking towards the house, the yard would “feel” smaller.
Learn about forced perspective from the following videos:
LOTR Forced Perspective Moving Camera (and platform)
Ames Room Illusion – Temple Grandin