The FEMA documents are available by telephone from FEMA Publications:
FEMA 178 is also available as ATC22 from Applied Technology Council (ATC):
555 Twin Dolphin Drive, Suite 550, Redwood City CA 94065, phone:
FEMA 310 may be available from American Society of Civil Engineers; that
organization prepared it: ASCE, 1901 Alexander Bell Drive, Reston Virginia,
20191, phone: 703-295-6000.
I have no internet information for ordering these publications.