To this end, a designation system is presented that includes symbols and an identification code. The differing established procedural needs of various organizations are recognized, where not ...

Symbols are included to depict mathematical functions, graphs, process equipment, instruments, and electrical equipment. The symbols are suitable for use in dynamic displays, as on cathode-ray tubes ...

Manual Q gives you time-saving quick fitting loss tables and a complete set of fitting loss tables compiled from the ASHRAE and SMACNA handbooks. Manual Q is your one-stop reference book on the ...

Description: This calculator, complete with detailed instructions, enables HVAC system designers to design an average duct system without additional references. The only calculator in the industry to ...

The Sheet Metal and Air Conditioning Contractors' National Association (SMACNA) has a new president. Tom Martin, who is the president of Cleveland-based T.H. Martin, Inc., is taking the reins of the ...

If you’ve heard the expression “like water off a duck’s back,” you may be surprised to learn that some people believe the phrase to be the original inspiration for duct tape. This durable ...

Symbols show important landmarks, places and areas. They are used because maps are usually too small to contain lots of writing A key is a guide which explains what the symbols on the map mean. It ...

Map symbols show what can be found in an area. Each feature of the landscape has a different symbol. Contour lines are lines that join up areas of equal height on a map. By looking at how far ...

A plane mechanic has finally explained the viral video of “duct tape” on an airliner jet engine — and revealed what it’s really used for. “We looked out of our window and saw this ...

Bile duct cancer is also called cholangiocarcinoma. It is a rare type of cancer that starts in the bile ducts. The bile ducts are small tubes that connect the liver and gallbladder to the small bowel.

Smartphones have progressed significantly over the past few years, with improvements in display, camera quality, and ...

The national average cost for a full ductwork replacement is $1,367 to $5,967, but it can range anywhere from $250 to $12,000, depending on the project’s scope. Many contractors charge per duct ...