Use a compass to accurately draw the hole. Bore a hole thru the sheet metal big enough to allow pointed tin snips to start cutting. Follow the line with tin snips until the hole is completed.
Asked in Geometry, Math History, Mathematicians
How do you calculate area in square meter of a duct elbow 45 degree?
To calculate the square meters of a duct you must add the total length of the straight duct work plus the loss of length from the elbows. A standard elbows measurement is 15 feet for each elbow with a 4 inch diameter or 20 feet for an elbow with a 6 inch diameter. ...
Asked in Construction Tools
What is the diameter of the tap drill for a 1 inch 8 UNC threaded hole?
7/8 diameter drill or .875
Can you use a down draft as an updraft furnace?
yes u can if u are good with duct work put a down draft furnace in a basement and pipe it up one floor well not recommended it will work i did this to help a lady get threw winter who had low funds and it has worked quite well u need to build a custom box for the furnace to sit on to make this work and pipe directly from box and use smallest duct work u can i.e...
Asked in Jobs & Education, Home & Garden
How many yards of concrete will it take to fill a 24 inch by 84 inch hole?
Concrete is reckoned by the cubic yard. But the hole mentioned only has two dimensions given - so I have to make an assumption, that it is an 84 inch deep round hole whose diameter is 24 inches. If this is the case, I work out the volume of the hole like this: volume of cylinder is pi times diameter times diameter times depth divided by four. 24 inch = 0.67 yard 84 inch = 2.33 yard So the volume is...
How do I patch 1 to 3 inch diameter holes in stucco?
Use something like Duct Tape to make a backing and fill the hole as much as possible with this. The use a putty knife to get the stucco material in the hole and to cover it, going up and down and side to side. You can then immediately paint over the patched spot, no need to wait on it to dry! ...
Asked in Scientific Method
Would 25-inch-diameter tire or a 50-inch-diameter tire make more rotations when traveling 100 feet?
How do you repair a furnace duct?
Contary to popular belief, 'duct' tape is not for fixing broken furnace ducts. It was originally developed for sealing the joints between duct sections, and is a poor substitute for properly riviting the sections together. If you have a large leak in a duct section, you might consider replacing the whole section rather than trying to patch it. If the leak is only a few inches in diameter, cut a piece of sheet metal about the same thickness as the metal...
Asked in Math and Arithmetic, Geometry
What is the radius of a circle with a 12 inch diameter?
A circle with a 12 inch diameter has a 6 inch radius.
Can a 31 inch tire go on a 30 inch rim?
No. The 'inch' figure for tires is related to the diameter of the interior 'hole' in the tire while the figure for wheels is linked to the outside diameter of the wheel. Trying to fit a 31 inch tire on a 30 inch rim would result in a 1/2 inch gap all the way around between the tire and wheel. Cheers ...
Asked in Geometry
How many gallons are requie to fill a 19 inch diameter hole that is 1700 feet deep?
Approx 642665 US gallons.
Asked in Math and Arithmetic
How many 0.50 inch diameter pipe will fit into one 1.50 inch diameter pipe?
Three 0.50 inch diameter pipes will fit into one 1.50 inch diameter pipe (hypothetically). The 0.50 inch diameters stack on top of each other until you have 1.50 inches! ...
What is the difference between 17 and 16 inch tires?
17 inch diameter rim versus 16 inch diameter rim
Asked in Geometry
How many square inch in a 20 inch diameter circle?
There are 100*pi square inches in a 20 inch diameter circle
Asked in Volume
What is the gallons per inch in a 59.5 inch diameter cylinder?
A 59.5-inch diameter cylinder holds 1,733 gallons per inch of length/height. ...
Where can I buy a bushing unit for a squrriel cage fan/blower unit in a home furnace made by American Furnace St. Louis The bushing is rubber and has a brass insert that's about 3/4 inch in diameter. Each end of the fan shaft has this bushing on it. ?
You should contact an air conditioner repear company to fix the furnace for you. ...
Asked in Math and Arithmetic, Algebra, Geometry
What is the circumference of 9 inch diameter circle?
The circumference of 9 inch diameter circle is about 28.27 inches.