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ESR-1854 I Most Widely Accep1-1 1 Trusted .Rage-9-of-1 r
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<br /> outside-diameter(73 mm)pile has been installed,the pile is conforming to ASTM A500, Grade C, except they have a
<br /> cut approximately 6 inches above the bracket. Two 1-inch- minimum yield strength of 65,000 psi (448 MPa) and a
<br /> diameter (25 mm) all-thread bolts are installed in matching minimum tensile strength of 76,000 psi(524 MPa).
<br /> hex nuts which are factory-welded to each side of the
<br /> bracket sleeve. A 3/4-inch-thick (19 mm) support strap is 3.3.4 Brackets:
<br /> then placed over the all-thread bolts and centered on top of 3.3.4.1 Plates: The 3/8-inch- and 112-inch-thick (10 and
<br /> the pile. The support strap is then attached to the bracket 12.7 mm) steel plates used in the brackets conform
<br /> with two 1-inch(25 mm)hex nuts screwed down on the all- to ASTM A36, but have a minimum yield strength of
<br /> threads. This bracket is only used with the helical pile 50,000 psi (345 MPa) and a minimum tensile strength of
<br /> system.Figure 8 contains additional details. 70,000 psi (483 MPa). The '/4-inch- and 5/s-inchthick
<br /> 3.2.3.6 New Construction Brackets #4075.1, #4078.1 (6.4 and 15.9 mm) steel plates used in the brackets
<br /> and#4079.1: These brackets are used with the helical pile conform to ASTM A36, having a minimum yield strength of
<br /> system in new construction where the steel bearing plate of 36,000 psi (248 MPa) and a minimum tensile strength of
<br /> the bracket is cast into the new concrete grade beam, 60,000 psi(413 MPa).
<br /> footing or pile cap concrete foundations. The brackets can 3.3.4.2 Channels: The steel channel used in the brackets
<br /> transfer compression,tension and lateral loads between the conforms to ASTM A36, having a minimum yield strength of
<br /> pile and the concrete foundation. The 4075.1 has a 36,000 psi (248 MPa) and a minimum tensile strength of
<br /> 4-inch-thick-by-4-inch-wide-by-8-inch-long (15.9 mm by 80,0Q0 psi(413 MPa).
<br /> 102 mm by 203 mm)bearing plate with two predrilled holes.
<br /> The 4076.1 has a 1-inch-thick-by-9-inch-wide-by-9-inch-long 3.3.5 Sleeves: The carbon steel round tube used in the
<br /> (25 mm by 229 mm by 229 mm) bearing plate with four bracket assembly as a sleeve conforms to ASTM A500,
<br /> predrilled holes. The 4079.1 has a 3/4-inch-thick-by-8-inch- Grade C, except it has a minimum yield strength of
<br /> wide-by-8-inch-long (16 mm by 203 by 203 mm) bearing 65,000 psi (448 MPa) and a minimum tensile strength of
<br /> plate with four predrilled holes. The 4075.1 and 4079.1 80,000 psi(552 MPa).
<br /> bracket steel bearing plates are factory-welded to a 3,3.6 Threaded Rods,Bolts and Nuts:
<br /> 31/2-inch-outside-diameter (89 mm) steel sleeve with a
<br /> predrilled 13/18-inch-diameter (20.8 mm) hole. The 4076.1 3.3.6.1 Helical Piles : The threaded pin and box used in
<br /> bracket steel bearing plate is factory-welded to a 27/8-inch- connecting the 27/8-inch-diameter (73 mm) helical lead
<br /> outside-diameter (73 mm) steel sleeve with predrilled shafts and extensions together conform to ASTM A29,
<br /> 131is4nch-diameter(20.6 mm)holes.The 4075.1 and 4079.1 Grade 4140, having a minimum yield strength of 55,000 psi
<br /> brackets are used with the 27/8-inch-diameter helical piles. (379 MPa) and a minimum tensile strength of 80,000 psi
<br /> The 4076.1 bracket is used with the 3.5-inch-diameter (552 MPa). The threaded pin and box used in connecting
<br /> helical piles. The bracket is embedded into the foundation the 3/-inch-diameter (89 mm) helical lead shafts and
<br /> unit to provide the effective cover depth and to transfer the extensions together conform to ASTM A29, Grade 4140,
<br /> tensile and compressive forces between steel bearing plate having a minimum yield strength of 55,000 psi (379 MPa)
<br /> and surrounding concrete. The bracket is attached to the and a minimum tensile strength of 80,000 psi(552 MPa).
<br /> pile shaft with either one or two 314-inch-diameter(19.1 mm) 3.3.6.2 All Ether Fastening Assemblies (Including
<br /> through-bolts, as shown in Table 38 of this report, to Brackets): The threaded rods conform to ASTM A307 and
<br /> complete the transfer of tension forces to the pile shaft. ASTM A449. The nuts conform to ASTM A563, Grade DH.
<br /> Figure 9 contains additional details. The threaded rods and nuts are Class B hot-dipped
<br /> 3.2.3.7 #4550.2875.1 Tieback Bracket Assembly: This galvanized in accordance with ASTM A153. Through-bolts
<br /> assembly is used with a helical pile and is only designed for used to connect the new construction bracket and tieback
<br /> tension loads. The assembly consists of two major bracket assembly to the pile to transfer tension forces
<br /> components, a tieback connection with rod and a tieback conform to ASTM A325 Type I and must be hot-dip
<br /> plate. The tieback connection is a 23/4-inch-diameter galvanized in accordance with ASTM A153.
<br /> (60 mm) steel sleeve with two predrilled holes to accept 4.0 DESIGN AND INSTALLATION
<br /> through-bolts for the connection to the helical pile pipe.
<br /> One end of the steel sleeve has a 11/2-inch-diameter 4.1 Design:
<br /> (38 mm) hex nut factory-welded to the sleeve to accept a
<br /> 11/2-inch-diameter (38 mm) all-thread rod that extends 4.1.1 Helical Pile: Structural calculations and drawings,
<br /> through the wall being supported. The tieback plate is an prepared by a registered design professional, must be
<br /> 8-inch-deep (203 mm) channel with a stiffening plate submitted to the code official for each project, based on
<br /> with a 17/8-inch-diameter (48 mm) hole in its center. The accepted engineering principles, as described in IBC
<br /> assembly is secured with a 11/2-inch-by-1/2-inch (38 by Section 1604.4 and 2015,2012 and 2009 IBC Section 1810
<br /> 12.7 mm) wedge washer and nut. Figure 10 shows and 2006 IBC Section 1808, as applicable.The load values
<br /> additional details. (capacities)shown in this report are based on the Allowable
<br /> Strength Design (ASD) method. The structural analysis
<br /> 3.3 Material
<br /> Specifications: must consider all applicable internal forces (shear, bending
<br /> 3.3.1 Helix Plates: The carbon steel plates conform to moments and torsional moments, if applicable) due to
<br /> ASTM A36, except they have a minimum yield strength of applied loads, structural eccentricity and maximum span(s)
<br /> 50,000 psi (345 MPa) and a minimum tensile strength of between helical foundations. The result of the analysis and
<br /> 70,000 psi(483 MPa). the structural capacities must be used to select a helical
<br /> 3.3.2 Helical Pile Lead Shafts and Extensions:The lead foundation system based on the structural and geotechnical
<br /> demands. The minimum embedment depth for various
<br /> shafts and extensions are carbon steel round tubes that loading conditions must be included based on the most
<br /> conform to ASTM A500, Grade C, except they have a
<br /> stringent requirements of the following: engineering
<br /> minimum yield strength of 65,000 psi (448 MPa) and a
<br /> tensile strength of 76,000 psi(524 MPa). analysis, tested conditions described in this report, site-
<br /> minimumspecific geotechnical investigation report, and site-specific
<br /> 3.3.3 Piling Sections: The piling sections, connectors, load tests, if applicable. For helical foundation systems ;
<br /> starters and guide sleeves are carbon steel round tube subject to combined lateral and axial (compression or
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