The carpenter gag or construction gag is a staple of physical comedy: large lumber merely missing unsuspecting heads; tools flying; wet concrete welcoming any descending pratfall. Classic stuff.

My book Clowns has long been out of print, but you can borrow it for two weeks at a time from the Internet Archive. More information is available here.
Visual and verbal humor for the cognitively and artistically curious! Available here.
“A book to treasure!”
—Bill Irwin