Lintel is a horizontal structure constructed over the openings.
While arches are architectural structures constructed for design are decorative purposeChat with our AI personalities
both are derived from latin word arcus means bow arch is a structure in the shape of arc arc is the imaginary shape you can draw
A bressummer beam carries loads from above but has no window or door below it. Therefore its allowable deflection (long term or short loads) can be greater. A lintel on the other hand has a window or door below it and requires less deflection to ensure that the operation of the window/door is not compromised.
The "inverted arch" is used when a sideways, or inward load, is to be resisted. The "common arch" supports a vertical load.
post and lintel construction
spandrel