Simple Joist Bearing Question

[SE2B]

In masonry construction, I have been told it is common practice to slope the bearing plates for joists using grout. (Allowing the joist to slope the typical 1/4 in/ft +/- and also providing a flat surface for them to bear on.)

It makes sense to me, yet I can't find any documentation to prove the "rumor" I have heard. I glanced throught the NCMA TEK notes and came up empty. Does anyone know where I can find something?

 

[whyun]

1/4" per foot is "essentially" level. Try to calculate the horizontal component.

Steeper roof pitch such as 4:12 etc are different, however.

 

[UcfSE]

If the slope of the joists is known, the manufacturer can design the bearings to bear on a flat surface while providing a sloped joist.

 

[DarthSoilsGuy]

i consider myself lucky on steel inspections when the bearing plates line up with the joists on both sides of the span.

 

[csd72]

Are you talking about steel or timber joists. Timber will rot if it is left to bear directly on grout.