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© 2014 Foundation Supportworks
®
,
Inc.
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APPENDIX 4D
SMARTJACK® SYSTEMS
Chapter 4
Miscellaneous Structural Support Products
SJ350TI (Threaded Insert):
Ø
3.500” x 1.00” thick machined and tapped insert,
ASTM A108 Grade 1018.
Yield strength = 56 ksi (min.), tensile strength = 90 ksi (min.).
Allowable compression for system heights up to 9 feet = (will
not govern)
SJ350T36, SJ350T60,
SJ350T84, SJ350T108, SJXT350T108 (Tube):
Ø
3.500” x 0.165” wall x 36”, 60”, 84”, or 108” long,
field cut to length, ASTM A500 Grade C
triple-coated in-line galvanized.
Yield strength = 50 ksi (min.), tensile strength = 55 ksi (min.).
Allowable compression for system heights up to 9 feet = 20.0 k
SJAFTG (Cast Aluminum Base):
0
.85” x 12.00” square AISI/AA 356.0-T6
cast aluminum. Yield strength = 20.0 ksi (min),
tensile strength = 30.0 ksi (min.).
Allowable compression = 8.0 k
SJ350BP (Bottom Plate):
1
” x 3.50” square ASTM A36 plate and
Ø
3.125” x 0.187”
wall x 0.75” long ASTM A53 Grade B confining ring.
Allowable compression (when used against concrete with
minimum f’c = 2,500 psi) =10.7 k
Precast Concrete Footing
Typical base dimensions approx. 12” x 12”. Exact
dimensions and capacities vary with manufacturer. Item
purchased at local building supply center.
Typical Basement Detail
Note:
Threaded insert is welded to tube
for basement applications (SJXT350T108).
Remaining details are consistent with those
shown for crawlspace applications.
Allowable Capacity
The allowable system compression capacity of the assembled SmartJack
®
system is limited to the
least value of the component capacities used in the system assembly. The component capacities are
listed in the technical specifications section.
The allowable load applied to the SmartJack
®
system may be limited by the bearing capacity of the
existing soil. The well-compacted crushed stone or recycled concrete base is a proven method to
increase support for the higher bearing pressure condition immediately below the cast aluminum base
or the concrete footing, and then to absorb and distribute lower pressures to the existing soils. Should
settlement of the SmartJack
®
system occur, adjustments are made easily by extending the all-thread rod.
Rev. 1/15/16