Tie Down Xi2 Frost Free foundation - Manual

U-bolt
Washer
Nut
Compression
Strut
Compression
Strut
Xi2 Foundation Pad
T-bolt
Joist Bracket
with Lag Bolts
T-bolt
Minimum Distance
From Edge: 2-1/2”
Joist Bracket
with Lag Bolts
031512,D1165
Frost Free
Foundation System
Installation Instructions
By Tie Down Engineering
A cost effective Engineered Perimeter Foundation Support for use with Frost Protected designs meeting Model
Installation “Standard”, HUD 24 CFR 3285, International Residential Code (IRC) Appendix E and ANSI A225.1.
Based on design assumptions from the “Standard” for frame plus perimeter pier support:
Max 16’nominal sections width (15’ actual), 12” eave, 300 lb. pier dead load, 35 plf wall dead load, and
10 plf chassis dead load.
Two separate joist support options, depending on needed load (see chart on page 4), allow for replacement of
perimeter piers up to a maximum of 8 ft. for a 40 lb. roof live load. Table 2, 3285.303 perimeter blocking, this
does not include flood and seismic design loads.
Follow the Manufacturers Installations Instructions in conjunction with the “Standards” for site contour and
drainage. This design follows the guidelines for proper site preparation that doesn’t allow moisture under the
home, and without moisture there is no frost heave.
The Xi2 Frost Free Foundation can be installed on concrete footers or steel
ground pans at all required locations. Tie Down ABS footer pads or concrete
footers can be used at all other pier locations with stacked concrete or steel
piers. Follow manufacturers set up Manual, local or state requirements for
proper footer spacing and all other set up requirements.
Heavy Duty
Part #59373
Standard
Part #59372
Instruction #08156
www.tiedown.com
Page 1
Updated:
03/15/12