Tie Down Concrete Foundation System - Manual (Page 3)

Xi2 System Requirements for Roof Pitches Higher than 20 degrees
Wind Zone I Wind Zone II Wind Zone III
5:12 6:12 7:12 9:12 5:12 6:12 7:12 9:12 5:12 6:12 7:12 9:12
34 2 2 2 2 2 2 2 2 2 2 3 3
36 2 2 2 2 2 2 2 3 2 2 3 3
38 2 2 2 3 2 2 2 3 2 3 3 3
40 2 2 2 3 2 2 2 3 3 3 3 3
42 2 2 3 3 2 2 3 3 3 3 3 3
44 2 2 3 3 2 2 3 3 3 3 3 3
46 2 3 3 3 2 3 3 3 3 3 3 4
48 2 3 3 3 3 3 3 3 3 3 3 4
50 3 3 3 3 3 3 3 3 3 3 3 4
52 3 3 3 3 3 3 3 3 3 3 4 4
54 3 3 3 3 3 3 3 3 3 3 4 4
56 3 3 3 3 3 3 3 3 3 3 4 4
58 3 3 3 3 3 3 3 3 3 3 4 4
60 3 3 3 3 3 3 3 3 3 3 4 5
62 3 3 3 3 3 3 3 3 4 4 4 5
64 3 3 4 4 3 3 4 4 4 4 4 5
66 3 3 4 4 3 3 4 4 4 4 4 5
68 3 4 4 4 3 4 4 4 4 4 5 5
70 3 4 4 4 3 4 4 4 4 4 5 5
72 3 4 4 4 4 4 4 5 4 4 5 5
74 4 4 4 5 4 4 4 5 4 5 5 5
76 4 4 4 5 4 4 4 5 4 5 5 6
78 4 4 4 5 4 4 4 5 4 5 5 6
80 4 4 4 5 4 4 4 5 4 5 5 6
Module
Length
(Feet)
101113,D974
Additional Systems:
On a single section home
the 3rd system is placed
in the middle of the
home. When using 3 or
4 systems (double and
triple sections) install
on opposite corners, if
needed, a 5th system
would be in the center of
the unit on either side.
Xi2 Longitudinal Stabilization for Wind Zone I, II & III
Single Section
Up to 16’ Nominal
Double Section
Up to 32’ Nominal
Triple Section
up to 48’ Nominal
NOTE: On triple section homes in
WZII & III an additional longitudinal
system is required. It should be
installed on the center section.
3285.402(c)(3) All new manufactured homes must have longitudinal stabilization in all wind zones.
When using longitudinal
stabilization only, systems
must be as evenly spaced
as possible, no more than
10’ from the end of the
home. Longitudinal struts
do not replace anchors on
single section homes.
Use One Strut (per end)
For WZ I
Use Two Struts (per end)
For WZ II & III
Sample Placement for Wind Zone I Shown