[Doris56]

What is code for the slope away from the house for a concrete porch?

 

[jomama45]

There is no code, per se, that I've ever seen, but the industry standard on concrete is "typically" 1/4" per foot on exterior flatwork. Certainly 1/8" per foot is the absolute minimum. If it's a covered porch, it's usually acceptable to be between those two ranges.

 

[Doris56]

OK. So how would a vinyl railing be installed so that it doesn't look really slanted? Can the railing be leveled?

 

[jomama45]

The top rail needs to run level, regardless of the pitch. You may need to alter the height of the spindles to retain a consistent spacing under the railing if the pitch is drastic.