Tie Down Vector Dynamics Foundation System for Wind Zones IBC 2009 - Manual (Page 2)

Page 2 4/3/2013
TIE DOWN ENGINEERING
VECTOR DYNAMICS INSTALLATION DESIGN INSTRUCTIONS
Introduction
These instructions describe the proper use of the lateral and longitudinal foundation system. You may also refer to
the home manufacturer’s installation manuals that include the Vector Dynamics system as an alternate
foundation system.
General
The Vector Dynamics Foundation System provides the support to resist lateral, longitudinal and over-turning
movement of the home as required by the Federal Manufactured Home Construction and Safety Standards for Wind
Zone I or the Internaional Building Code (IBC) 2009 for 90 mph wind in exposure C when the system is used as
described in these instructions. Please verify state or local wind load requirements prior to installation of the home.
The Vector Dynamics Foundation System resists lateral & longitudinal wind loads by anchoring the two longitudinal
main rails. The system is approved to be used on single or multi section homes:
• Nominally 12 feet to 18’ feet wide- (single section) with main rail spacing of 95 inches or greater
on center; multi section main rail spacing of 75 inches or greater on center.
• Nominal 8 foot or less top plate height at sidewalls with main rail depth of 12” or less.
• Additional systems needed on roof slope over 20 degrees (4.37 in 12” slope) see page 8.
• Maximum eave width (roof overhang of sidewall) of 12” for Zone I.
• Maximum pier height under main rails-see page 6.
The Vector Dynamics Foundation Systems may be used as a part of the vertical or gravity support system
considering that each Vector Dynamics pad has two (2) or (3) square feet bearing area.
To inquire about the use of the Vector Dynamics Foundation Systems with homes of four or more sections, other
widths, on homes requiring pier heights which are not included in these instructions, or in other Wind Zones,
contact Tie Down Engineering, Inc. at 1-800-241-1806.
The Vector Dynamics Foundation System has not been designed for use on exposure “D” homes within 1500 feet
of the coastline.
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, end frame ties and rim plates.