You're probably thinking of the top tube, AKA cross bar.
Crossbar
In a beam the vertical part is called the web and the horizontal part is called the flange. For an 'I' beam the middle vertical part is the web and the top and bottom horizontal parts are the flanges.
The horizontal beam above a door or window is sometimes called a lintel. This part of the door or window is a portion of the frame in most cases.
This is called a beam :)
Lintel : Horizontal beam used as a finishing piece over a door or window.
Horizontal beam width = 4.0 degrees Vertical beam width = 1.6 degrees
Stone, metal or wood depending on need. A lintel is the part, not what it is made of.
column
the beam has a total volume of 60ft 3 what is the maximium horizontal gap that the beam can span
No it is not
1) What do you mean by sail extender? The rope to hoist (raise) the sail is called the halyard. The vertical beam supporting the sail is the mast, the horizontal beam supporting the sail is the boom.2) It's called a SPRIT - see: Dictionary.com
mechanical engineering