Chance Technical Design Manual

BUILDING CODE COMPLIANCE PER ICC-ES ESR-2794 The following tables provide the nominal, LRFD design, and ASD allowable compression strengths of new construction pile caps used with Type SS5 and SS175 square shaft helical piles, and Type RS2875.203, RS2875.276, RS3500.300, and RS4500.337 round shaft helical piles as evaluated per ICC-ES Acceptance Criteria AC358. The last table on page 7-95 pro vides the nominal, LRFD design, and ASD allowable tension strengths of new construction pile caps used with Type SS5 and SS175 square shaft helical piles, and Type RS2875.203, RS2875.276, RS3500.300, and RS4500.337 round shaft heli cal piles as evaluated per ICC-ES Acceptance Criteria AC358. These strengths are published in ICC-ES ESR-2794. The

strengths listed are based on three different concrete founda tion strengths and two different soils conditions—firm and soft. The pile head is assumed to be either pinned or fixed within the concrete foundation depending on cover and reinforcing, and the piles are assumed to be braced. The helical pile must be embedded at least 7.5 inches into the concrete foundation when designed as fixed end condition. Per the International Building Code (IBC) 2006 Section 1808.2.9.2 & IBC 2021 Section 1810.2.1, piles can be considered fixed and laterally supported at 5 feet below the ground sur face in firm soil and at 10 feet in soft soil.

DRAWINGS & RATINGS

NOMINAL STRENGTHS OF NEW CONSTRUCTION PILE CAPS LOADED IN COMPRESSION 1,2,3,4,5,6,7,8,9

NOMINAL COMPRESSION STRENGTH (kip) {kN}

2500 psi CONCRETE 6

3000 psi CONCRETE 6

4000 psi CONCRETE 6

CATALOG NUMBER 9

PILE MODEL

FIRM SOIL SOFT SOIL PINNED FIXED PINNED FIXED PINNED FIXED PINNED FIXED PINNED FIXED PINNED FIXED SOFT SOIL FIRM SOIL SOFT SOIL FIRM SOIL

54.4 {242} 100 {445} 54.4 {242} 100 {445} 71.5 {318} [71.5 {318}]

60.0 {267} 100 {445} 60.0 {267} 100 {445} 71.5 {318} [71.5 {318}]

13.6 {60} 25.8 {115} 13.6 {60} 25.8 {115}

26.6 {118}

54.4 {242} 100 {445} 54.4 {242} 100 {445}

62.3 {277} 100 {445} 62.3 {277} 100 {445}

13.6 {60} 25.8 {115} 13.6 {60} 25.8 {115}

26.6 {118}

54.4 {242} 100 {445} 54.4 {242} 100 {445}

66.9 {298} 100 {445} 66.9 {298} 100 {445}

13.6 {60} 25.8 {115} 13.6 {60} 25.8 {115}

26.6 {118}

C1500458(G)

SS5

50.5 {225}

50.5 {225}

50.5 {225}

C1500459(G)

SS175

26.6 {118}

26.6 {118}

26.6 {118}

C1500465(G)

SS5

50.5 {225}

50.5 {225}

50.5 {225}

C1500467(G)

SS175

55.2 {245} [42.4 {188.6}] 90.7 {403} [76.2 {339}] 45.2 {201.0} [33.2 {147.7}] 156.3 {695.3} [141.0 {627.2}]

71.5 {318} [64.6 {287.4}] 110 {489.3} [100.7 {448}] 66.1 {294.0} [56.0 {249.1}]

80.1 {356.3} [80.1 {356.3}] 121.9 {542.2} [116.7 {519.1}] 80.1 {356.3} [73.9 {328.7}] 186.2 {828.3} [181.6 {807.8}]

80.1 {356.3} [80.1 {356.3}] 128.0 {569.4} [125.2 {557}] 80.1 {356.3} [80.1 {356.3}] 186.2 {828.3} [186.2 {828.3}]

55.2 {245} [42.4 {188.6}] 90.7 {403} [76.2 {339}] 45.1 {201.0} [33.2 {147.7}] 156.3 {695.3} [141.0 {627.2}]

73.9 {328} [64.6 {287.4}] 110 {489.3} [100.7 {448}] 66.1 {294.0} [56.0 {249.1}] 175.3 {779.8} [166.3 {739.7}]

86.3 {383} [80.8 {359.4}] 121.9 {542.2} [116.7 {519.1}] 80.1 {356.3} [73.9 {328.7}] 186.3 {828.7} [181.6 {807.8}]

92.9 {413} [89.8 {399.5}] 128 {569.4} [125.2 {557}] 87.1 {387.4} [84.2 {374.5}] 191.7 {852.7} [189.2 {841.6}]

55.2 {245} [42.4 {188.6}] 90.7 {403} [76.2 {339}] 45.2 {201.0} [33.2 {147.7}] 156.3 {695.3} [141.0 {627.2}]

73.9 {328} [64.6 {287.4}] 110 {489.3} [100.7 {448}] 66.1 {294.0} [56.0 {249.1}] 175.3 {779.8} [166.3 {739.7}]

C1500781(G) C1500797(G)

RS2875.276

121.9 {542.2} [116.7 {519.1}] 71.5 {318} [71.5 {318}] 166.1 {739} [166.1 {739}]

128.0 {569.4} [125.2 {557}] 71.5 {318} [71.5 {318}] 166.1 {739} [166.1 {739}]

C1501356(G) C1501357(G)

RS3500.300

C1500781(G) C1501977(G)

RS2875.203

166.1 {739} [166.1 {739}]

C1072726(G) C1072727(G) RS4500.337

Notes: For SI: 1 inch = 25.4 mm, 1 kip = 4.448 kN, 1 kip∙in = 113 N∙m. 1 Refer to Section 4.1.3 of ICC-ES ESR-2794 for descriptions of fixed condition, pinned condition, soft soil, and firm soil. 2 Strength ratings include allowance for corrosion of zinc-coated new construction pile caps over a 50-year service life and presume the supported

structure is braced in accordance with IBC Section 1810.2.2. 3 Capacities apply to the specific pile cap and pile models listed.

4 The fixed end condition requires that the foundation itself be fixed and that the pile and pile cap be embedded in the foundation with adequate concrete cover and reinforcing to resist 56.4 kip∙in, 116 kip∙in, 71.66 kip∙in, 138.3 kip∙in, 138.3 kip∙in, and 263.72 kip∙in nominal bending moment for SS5, SS175, RS2875 (including RS2875.203 and RS2875.276), RS3500, RS3500/SS175 combo, and RS4500 pile models, respectively. The center of the shaft must be at least 6 inches away from the end/corner of the concrete footing. 5 See Section 4.1.2 of ICC-ES ESR-2794 for applicable limit states that must be evaluated by a registered design professional. 6 Refer to the specified compressive strength of concrete at 28 days [minimum of 24 MPa is required under ADIBC Appendix L, Section 5.5.1]. 7 Values in brackets [ ] are for use in Seismic Design Categories D, E, and F. 8 The concrete footing design and reinforcement design, including the concrete thickness above the new construction pile cap, must be determined by a registered design professional. 9 (G): The cap is available as galvanized and nongalvanized (bare steel). Catalog items with “G” suffix are galvanized and without “G” are bare steel.

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