FLOOD02929

• County: Statewide
• Community: na
• Basin: Statewide
• Title: Manufactured Home Installation in Flood Hazard Areas
• Date: 9/1/1985
• Prepared By: FEMA
• Floodplain - Doc Type: Educational/Technical/Reference Information

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(3) Diagonalbracing and vertical members.

(4) Longitudinal support beams and vertical
members.

(5) End bracing and vertical members.

Figure 4.46 Elevated Foundation Connections

Depending upon the design loads and type of
elevated foundation and member sizes, the re-
quired connections will be subjected to different
loads. These connections must withstand the
loads so failure of the elevated foundation design
does not Qpcur.

Horizontal Beam
The total load on a horizontal beam is based on
vertical support spacings, wind and roof live loads,
as well as manufactured home width. The bolts
connecting the horizontal beams to the vertical
members, as shown in Figure 4.47 must be
capable of carrying that load, thereby transmitting
it to the vertical member.
Tables 4.21 and 4.22 provide the recommended
number of bolts and their diameter for each
horizontal beam to vertical member connection.
These values are based on design values for
bolts loaded at both ends with loading perpen-
dicular to grain for wood having a design value
of 890-970 psi in wet service conditions. Note that
all bolts must be of corrosion resistant metal and
bolt holes drilled to one-sixteenth inch diameter
greater than the required bolt diameter. To main-

Figure 4.47 Bolts at Horizontal Beam and
Vertical Member

Table 4.21

NUMBER AND DIAMETER DF BOLTS
AT CONNECTION OF HORIZONTAL BEAMS
TO SQUARE VERTICAL MEMBERS _

Vertical MeaDer Manufactured Home
Spacing (ft.) Width (ft.)
12 14
Wind Load = IS or 25 p5r
Roof Live Load = 20 pst
5 4 0 5/8" 4 C 5/8"
6 4 0 5/8" . C 5/8"
7 4 0 5/8" , C 7/8"
8 4 0 5/8" . e 7/811
9 4 0 3/4" 40'1/8"
10 4 0 7/8" 4 0 7/8"
Roof Live Load = 30 psf
5 4 0 5/8" 4 0 5/8"
6 4 Q. 5/8" 4 C 7/8"
7 4 C 5/8" . C 7/8"
8 4 0 7/8" 4 C 7/8"
9 4 0 7/S" 4 0 7/8'
10 4 C 7/8" . C 7/8"
Roof LIve Load = 40 pst
5 4 C. 5/a" 4 0 7/8"
6 4 0 5/8" 4 C 7/8"
7 4 C 7/8" 4 C 7/8"
8 4 0 7/8" 4 C!. 7/8"
9 4 C 7/8 401"
10 4 a. 7/8" ~ 0 III

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