Tie Down Steel Pier System User Manual

Steel Pier System

Installation Instructions for Wind Zone I, II & III
By Tie Down Engineering

Updated: 8/9/06

• Easy installation

• 3 Sq ft pad & pier replace standard support pier and base

• Arms of pier easily handle longitudinal stabilization requirements

• Heavy galvanized coating* on bracket and struts

• Screw type peir adjusters... No need to use installation jacks to adjust home to system

REQUIREMENTS

• Install in any type of soil, 4B(175-275 lbs.) or better.

• Maximum vertical projection at sidewall is 9’. Higher walls may be used when the design loads are
adjusted accordingly.

• Main rail spacing must be 75.5” - 99.5”

• Wind Zone II & III generally require sidewall anchors. Check manufacturers requirements.

• Additional vertical anchor ties that are unique to a home's design may be required by the home
manufacturer. These locations may include shear walls, marriage line ridge beam support posts, and rim
plates. The longitudinal component of the Xi2 system replaces end frame ties. Check manufacturers
set-up requirements.

• Maximum pier height is 48” pier.

• Systems must be placed as evenly as possible, no more than 10’ from end of home.

• Additional systems may be needed for roof slopes greater than 20 degrees, (4.37” in 12” Pitch ) See Page 4.

• Two systems designed to work in conjunction with each other.

* Xi2 components exceed HUD code 3280.307g "Anchoring equipment exposed to weathering shall have a

resistance to weather deterioration at least equivalent to that provided by a coating of zinc on steel of not

less than 0.30 ounces per square foot of surface coating...."

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Xi2 Longitudinal Pier Placement

Single Section

Up to 16’ Nominal

Double Section

Up to 32’ Nominal

Triple Section

up to 48’ Nominal

When pier with LSD struts is used only as longitudinal stabilization, systems must be as evenly spaced as
possible, no more than 10’ from the end of the home.

Xi2 Lateral Stabilization Pier Placement

30”

Anchor*

Xi2 Pier

Placement

3rd System

for Placement

Single Section Home - WZ I & II

0 - 76’ Box 2 Xi2 Systems

Over 76’ Box 3 Xi2 Systems

Single Section Home - WZ III

0 - 64’ Box 2 Xi2 Systems

Over 64’ Box

* For Wind Zone I - 30” anchor w/vertical strap or frame tie w/stabilizer plate, within 10’ of end of home on single sections.

NOTE: Diagram represents single section up to 16’ width, double section up to 32’ width,

and triple section homes up to 48’ width.

3 Xi2 Systems

Double Section Home - WZ I & II

0 - 76’ Box 2 Xi2 Systems

Over 76’ Box 3 Xi2 Systems

Double Section Home - WZ III

0 - 64’ Box

Over 64’ Box

2 Xi2 Systems
3 Xi2 Systems

Triple Section Home - WZ I & II

0 - 76’ Box 2 Xi2 Systems

Over 76’ Box 3 Xi2 Systems

riple Section Home - WZ III

T

0 - 64’ Box

Over 64’ Box 3 Xi2 Systems

2 Xi2 Systems

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