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What store can you find sheet metal?
Stores that make duct work and fit ventilation. There are usually one or two in every large town.
What are the types of air duct?
There are three main types of air ducts: sheet metal, pre-insulated, and flexible duct work. Sheet metal air ducts can be made of galvanized steel or aluminum, and may be insulated inside or outside with fiberglass. There are pre-insulated air ducts, which are relatively inexpensive to install, made of fiberglass duct board, polyurethane foam panels, or phenolic foam panels. Air ducts can also be flexible ducts, made of flexible plastic over a wire coil.
How do you seal duct vents?
With duct tape I install and maintain duct work for a living if you want to seal the joints just wrap the tape around the duct. If you need to cover a hole you will need to screw a piece of metal on the duct over the hole and tape over the edges of your patch. this is the simplest and cheapest way I know to do it.
What is duct that you put on insulation?
You insulate any ductwork where you want to control the temperature diffences between the inside and outside of the duct. One example would be the combustion air duct, usually a round sheet metal line that comes from the outside and ends near the furnace and/or water heater. Typically this would be insulated with fiberglass padding held in place with a plastic coating. Larger, rectangular ductwork can be insulated with internal or external insulation, not always fiberglass, of verying thicknesses.
Why the return duct of AHU is larger than supply duct?
The air is returning at a lower velocity, so you need a larger size duct.
Does anybody got experience whether to prefer metal piping or duct board for residential air heating?
Metal ducts cost more to fabricate.
Individual sections of round sheet metal duct should be held together with?
Min of 3 screws
Should galvanized sheet metal be used to patch stove pipe?
Yes, the kind you use for duct work.
What is Pittsburghh joint in HAVC duct work?
Refer to the SMACNA reference for metal duct construction. The Pittsburg joint is used for most commonly fabricated metal retangular ducts. Most modern sheetmetal fabrication shops use a mechanized piece of equipment to create the Pittsbugh joint on one edge of the sheet metal that is being formed into a retangular duct. The Pittburgh joint is basically a series of bends in the sheetmetal that create a female joint that will accept the male end of the rectangular duct. The female joint includes an extended section of sheet metal that is mechanically or manually hammered over the male edge of the sheet metal once it is positioned within the Pittsburgh joint. It is much easier to understand when viewing a piece of flat piece of sheet metal that is being formed into a section of duct with a mechanized piece of equipment found in most sheet metal shops. I have created a Pittsburgh joint with a manual hand break for specialized duct fittings. I hope the information has been helpful. Ralph Pimentel C.B.O. Member ICC ICBO IAMPO Member Sheet Metal Workers Local #77 National Building Consultants Member State of Kansas Home Inspector Board, Vice Chairman
What store can you find sheet metal?
Stores that make duct work and fit ventilation. There are usually one or two in every large town.
How do you calculate the area of HVAC duct offset and elbow?
In order to calculate the area of HVAC duct offset and elbow, one must first measure the distance between the two. Then the elbow must be larger than any cross section to maintain airflow.
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.
How do you calculate the area of a duct elbow?
Area of Duct = (Weidth+Height) X 2 X (Length1+Length2)
Can duct tape set off a metal detector?
No, duct tape can't set off a metal detector.
What are the types of air duct?
There are three main types of air ducts: sheet metal, pre-insulated, and flexible duct work. Sheet metal air ducts can be made of galvanized steel or aluminum, and may be insulated inside or outside with fiberglass. There are pre-insulated air ducts, which are relatively inexpensive to install, made of fiberglass duct board, polyurethane foam panels, or phenolic foam panels. Air ducts can also be flexible ducts, made of flexible plastic over a wire coil.
How you calculate the area of HVAC duct offset and elbow in square feet?
200+200
What are various oprations in tin smithy?
Tins smiths, work with sheet metal on construction jobs, construct steel shingles for doors and windows, they inspect and maintain, repair, and do duct work
