Up the Creek Column - 7
9. We used a plumb bob to mark the ceiling above the
sub-roadbed edge and used an ultrasonic stud finder to
locate the ceiling joists.
10. We notched the spline to accommodate some con-
duit and installed a beveled 2x4 cleat to secure a loose
end of the spline. Murphy law was in action; there was
no ceiling joist close by.
9
10
11
Ouch! Now it was $30 per sheet and I’d need 17 sheets! No
way, Jose!
11. Mounting the Masonite spline on the ceiling with
3-1/2” deck screws is work! Note the washers used
to prevent the screw heads from splitting the splines.
I made my own washers from Masonite with a 1” hole
cutter, but metal washers would also work. We needed
to coax the spline just a tad to keep it lined up with the
ceiling marks.
Plumb bob marks
Joist locations found
with stud finder
Washers prevent the
splines form splitting
2 x 4 beveled cleat
Glue-laminated beam
MRH-Jul 2014
