Technical Specifications

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ICC-ES Evaluation Report
ESR-4404
Issued August 2019
This report is subject to renewal August 2020.
www.icc-es.org | [phone] | [phone] A Subsidiary of the International Code Council
®
DIVISION: 31 00 00—EARTHWORK
Section: 31 60 00—Special Foundations and Load-
Bearing Elements
REPORT HOLDER:
NATURAL CONCRETE PRODUCTS, LLC
EVALUATION SUBJECT:
HANDI PIER™ HP-R
1.0 EVALUATION SCOPE
Compliance with the following codes:
2018, 2015, 2012, 2009 and 2006 International Residential
Code
®
(IRC)
Property evaluated:
Structural
2.0 USES
The HANDI Pier™ HP-R bearing pin pier for use as the
foundation of exterior porch deck, elevated walkway,
stairway construction and accessory structures as defined
in the IRC for the support of gravity loads when installed in
soils. The bearing pin piers are permitted for use in any of
the weathering classifications defined in IRC Figure
R301.2(3).
3.0 DESCRIPTION
3.1 General:
The HANDI Pier™ HP-R bearing pin piers consist of a
factory-fabricated, pre-cast concrete head that has a steel
sleeved insert and a galvanized steel ½ inch (12.7 mm)
diamater anchor bolt in the center of the top of the head; and
1 inch (25.4 mm) galvanized steel bearing pins which are
jobsite installed through the steel sleeved insert in the head,
and driven into the underlying soil. See Figure 1 for
illustration of HANDI Pier™ HP-R.
3.2 Materials:
3.2.1 Concrete Head: The HANDI Pier™ HP-R concrete
head measures 10 inches (254 mm) in diameter and
11 inches (279 mm) tall, weighs approximately 50 pounds
(22.7 kg), and is formed from air-entrained, fiber-reinforced
normal-weight concrete. The air-entrained concrete has a
minimum compressive strength of f’c = 6,000 psi (41.5 MPa)
at 28 days, and a total air content (percent by volume of
concrete) of not less than 5 percent nor more than 7 percent,
in accordance with IRC Section R402.2.
3.2.2 Steel Sleeved Insert: The steel insert is precast into
the concrete head and holds the proper angles needed for
the bearing pins. The steel material complies with ASTM
A513.
3.2.3 Precast Galvanized Steel Anchor Bolt: The
galvanized steel anchor bolt that is precast into the center
of the top of the concrete head measures a minimum
1
/
2
inch
(12.7 mm) in diameter and complies with ASTM A307 as
Grade A.
3.2.4 Steel Bearing Pins: The four steel bearing pins
supplied with each pier are made of Type E, Grade A
(electric-resistance-welded), Schedule 40, galvanized steel
pipe complying with ASTM A53. The pins have a nominal
1-inch diameter [1.315-inch (33.4 mm) outside diameter;
0.133-inch nominal wall thickness]; and have a minimum
nominal length of 50 inches (1270 mm).
4.0 DESIGN AND INSTALLATION
4.1 Design:
When installed in accordance with this report in minimum
allowable presumptive soil load-bearing value of 1,500 psf
(71.8 kPa) per IRC Table R401.4.1, the HANDI Pier™
HP-R bearing pin pier provides a 2.2 square foot (0.20 m
2
)
of bearing area for a 3,400 lbs of gravity load bearing
capacity for supporting gravity loads.
When installed in accordance with this report in minimum
allowable presumptive soil load-bearing value of 2,000 psf
(95.8 kPa) per IRC Table R401.4.1, the HANDI Pier™
HP-R bearing pin pier provides a 2.2-square-foot (0.20 m
2
)
of bearing area for a 4,400 lbs of gravity load bearing
capacity.
4.2 Installation:
The site soil is prepared by digging a hole with a conical
shape, approximately the shape of the base of the concrete
head and approximately 6 to 8 inches (152 to 203 mm)
deep, leaving loose soils directly below the head. The head
is positioned in the hole to its midpoint, and braced as
needed to plumb. The bearing pins must then be slid
through the holes in the concrete head, and driven into the
soil using an automatic hammer as recommended in the
HANDI Pier™ HP-R published installation instructions,
leaving
3
/
4
inch (19.1 mm) of the pin protruding from the
upper surface of the pier. Once the dead loads have been
applied to the pier, the length of the protruding bearing pin
must be verified and adjusted as necessary to
3
/
4
inch
(19.1 mm). The exposed end of the bearing pins must then
be capped and sealed as recommended in the HANDI
Pier™ HP-R published installation instructions. The
minimum spacing of the installed bearing pin piers is 3 feet
(0.91 m) on center.
5.0 CONDITIONS OF USE
The HANDI Pier™ HP-R bearing pin piers described in this
report comply with, or are suitable alternatives to what is