Draw An Elliptical Arch
how can i draw an elliptical arch on a sheet of plywood?
i am putting a eliptcal arch between two rooms but cant figure out the proper way to do it the arch has to cover 94inches and is 18 inches deep i am making it out of plywood so i dont have to plaster it
Without going too crazy....picture this.
First, would not use plywood, but you can, just easier to use drywall since once built it is tape & mud as usual & will also paint up better.
Stand the panel on its side, measure & draw a 94"x18"
rectangle.
Take a chalkline & pin it to one corner then let out enough string so that it will touch the line at 18" & end on the other corner at 94".
This gives a smooth "catenary" arch.
Carefully tap the string to transfer the curve the panel without disturbing it.
You can trace over the line w/ pencil to "heavy i t up" & not lose it .
Cut it out & use it as a pattern for the other side
Would be a good idea to allow for a "header" to attach the arch to the ceiling so allow for a 2x4 to run across the opening which means adding that amount to the 18" depth.
What amounts to studs can be attached to one site of the arch ( built on the floor) & then fixed to ceiling & side walls.
Include intermediate pieces between te studs to provide support for fixing the front & back along the curve.
The other side is then fixed to the header & studs.
The underside of the arch can be done a couple of ways.
A strip of drywall can be attached to the studs directly or to a
strip of masonite which is easily bent to shape.
If drywall is used, pre- form it by wetting it down & allowing it to droop in the same catenary curve as used for the panels
Raise the ends to the depth of the arch & let it dry before screwing it in place .
This method is fairly common & probably easiest for a "wall thickness" archway.since no math is involved trying to construct an ellipse.
Finishing the bottom edge of the arch is the tricky part using plywood or drywall& if you can find flexible corner bead , grab it.
That is the basic idea for an evenly curved .wide arch.& you will need think some out details before you start.
Best regards
Beginner Drawing Lessons : How to Draw an Elliptical Arch
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About the Author:
A lady keen on furniture info, fashon trend and product review.
Article Source: ArticlesBase.com - Office and Outdoor Furniture - Invest in Style and Comfort
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