What is the spacing on rafters in a mobile home?

Typical construction layout for mobile home floor joists is 24'' on center. Some older models may be laid out 48'' on center depending on type and size of floor joist used.

Ans 2 - MOST mobile homes made since 1975 have 16" spacing of floor joists. Mine and many others I've seen are 16" spacing. -I've looked at and re-floored many.

My ceiling rafters are also 16" spacing. - Never seen 24" spacing.