Transmission And Substation Foundations - Technical Design Manual

A Basic Guideline For Designers APPENDIX C: HELICAL PILES & ANCHORS

Table C-5 - SS175 - P2 Shaft Compression Strength and P3 Helix Strength in Firm or Soft Soil

ASD Allowable Axial Compression Strength, kip (kN) Firm Soil Soft Soil Fixed Pinned Fixed

Section Type & Helix Count

Pinned

Lead, Single Helix

30.2 (134.3)

See Helix Strength Table Above 94.7 (421.2) 61.8 (274.9) 54.6 (242.9) 51.8 (230.4) 98.4 (437.7) 98.4 (437.7)

See Helix Strength Table Above 61.7 (274.5) 61.7 (274.5) 54.6 (242.9) 51.8 (230.4) 61.7 (274.5) 61.7 (274.5)

Lead, Single 12” Helix

28.7 (127.7)

15.4 (68.5)

Lead, Single 14” Helix Lead, 2-Helix 8”-10” Lead, 2-Helix 10”-12” Lead, 2-Helix 12”-14” Lead, 2-Helix 14”-14”

25.9 (115.2)

30.2 (134.3)

15.4 (68.5)

Lead, Multi-Helix

30.2 (134.3) 30.2 (134.3)

15.4 (68.5) 15.4 (68.5)

Extension

TABLE C-6 - SS175 – P1 Pile Cap Compression Strength And P2 Shaft Compression Strength In Firm And Soft Soils ASD Allowable Strengths Of New Construction Pile Caps Loaded In Compression 1,2,3,4,5,6,7,8

ASD Allowable Compression Strength kip (kN) 2500 psi Concrete 6

3000 psi Concrete 6

4000 psi Concrete 6

Catalog Number

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

32.6 (145) 52.7 (234) 32.6 (145) 52.7 (234)

33.7 (150) 52.7 (234) 33.7 (150) 52.7 (234)

8.1 (36) 15.4 (69) 8.1 (36) 15.4 (69)

16.0 (71)

32.6 (145) 60.0 (267) 32.6 (145) 60.0 (267)

34.6 (154) 60.0 (267) 34.6 (154) 60.0 (267)

8.1 (36) 15.4 (69) 8.1 (36) 15.4 (69)

16.0 (71)

32.6 (145) 60.0 (267) 32.6 (145) 60.0 (267)

36.4 (162) 60.0 (267) 36.4 (162) 60.0 (267)

8.1 (36) 15.4 (69) 8.1 (36) 15.4 (69)

16.0 (71)

C1500458(G) SS5

30.2 (134)

30.2 (134)

30.2 (134)

C1500459(G) SS175

16.0 (71)

16.0 (71)

16.0 (71)

C1500465(G) SS5

30.2 (134)

30.2 (134)

30.2 (134)

C1500467(G) SS175

TABLE C-7 - SS175 – P1 Repair Bracket Compression Strength And P2 Shaft Compression Strength In Firm And Soft Soils ASD Allowable Strengths Of C1500299 Remedial Repair Brackets & Helical Piles 1,2,3,4,5

ASD Allowable Strength in Axial Compression kip (kN) 2500 psi Concrete 5

Bracket Catalog Number

T-Pipe Catalog Number

Pile Model

3000 psi Concrete 5

4000 psi Concrete 5

Firm Soil 34.7 (154)

Soft Soil 27.7 (123)

Firm Soil 39.3 (175)

Soft Soil 27.7 (123)

Firm Soil 47.9 (213)

Soft Soil 30.2 (134)

C1500299

C1500488

SS175

C-8 | www.hubbell.com/hubbellpowersystems