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Copyright 2011 – Magnum Piering, Inc. Helical Pile Product Numbering Presentation by: Howard A. Perko, Ph.D., P.E. Director of Engineering, Magnum Geo-Solutions,

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Presentation on theme: "Copyright 2011 – Magnum Piering, Inc. Helical Pile Product Numbering Presentation by: Howard A. Perko, Ph.D., P.E. Director of Engineering, Magnum Geo-Solutions,"— Presentation transcript:

1 Copyright 2011 – Magnum Piering, Inc. Helical Pile Product Numbering Presentation by: Howard A. Perko, Ph.D., P.E. Director of Engineering, Magnum Geo-Solutions, Inc. Copyright 2011 – Magnum Piering, Inc., All Rights reserved. May be distributed and printed by express written permission of the author only. MAGNUM Informational Bulletin ISO-MHP2-11A

2 Copyright 2011 – Magnum Piering, Inc. Helical Pile Numbering System Shaft Sizing Coupling Selection Section Lengths Helical Bearing Plate Sizes Surface Coating Specification Contact Information Outline

3 Copyright 2011 – Magnum Piering, Inc. Product Numbering All MAGNUM helical pile products begin with the extension MH. See pg. 8 Magnum 2011 Product Catalog

4 Copyright 2011 – Magnum Piering, Inc. Product Numbering Next is either L for lead or E for extension section. Note that sometimes the L or E is dropped when referencing the entire pile. See pg. 8 Magnum 2011 Product Catalog

5 Copyright 2011 – Magnum Piering, Inc. Product Numbering Shaft dimension and thickness comprises the main designation for MAGNUMs product numbering system. See pg. 8 Magnum 2011 Product Catalog

6 Copyright 2011 – Magnum Piering, Inc. Shaft Size Selection Magnums Product Catalog Contains a Summary of Popular Sizes (Other Custom Sizes are Available) Available size, diameter, and gauge. See pg. 9 Magnum 2011 Product Catalog

7 Copyright 2011 – Magnum Piering, Inc. Product Numbering Bolted, bolted-reinforced, welded, and welded reinforced couplings are available. Bolted is most common. See pg. 8 Magnum 2011 Product Catalog

8 Copyright 2011 – Magnum Piering, Inc. BR The bolted-reinforced coupling consists of an external and an internal collar sleeve for triple wall thickness to protect bolt holes and provide higher maximum installation torque and subsequently higher capacity. Reinforced Coupling

9 Copyright 2011 – Magnum Piering, Inc. Product Numbering Practically any section length is available from 2 feet up to 40 feet. Maximum length depends on overhead restrictions and equipment capabilities. Sections are joined to reach desired depth. See pg. 8 Magnum 2011 Product Catalog Note: Section lengths are omitted when referencing the entire helical pile.

10 Copyright 2011 – Magnum Piering, Inc. MAGNUM Helical Pile Sizes Magnums Product Catalog Contains a Summary of Popular Sizes (Other Custom Sizes are Available) See summary table for more common lengths. By far, 6-feet is most common for 3 diameter products. See pg. 9 Magnum 2011 Product Catalog

11 Copyright 2011 – Magnum Piering, Inc. Product Numbering Helix thickness. Note K is standard for MH220, MH313, MH325, and MH352. See pg. 8 Magnum 2011 Product Catalog

12 Copyright 2011 – Magnum Piering, Inc. Magnum engineers have performed calculations, finite element modeling, and accredited lab testing to develop helix thickness standards for punching shear and weld strength. K = 3/8 For MH220, MH313, MH325, MH3521 M = 5/8 For MH425, MH431 O = 7/8 For MH530, MH536, MH625, and larger. Helix Thickness Determination

13 Copyright 2011 – Magnum Piering, Inc. Product Numbering Size, style, and number of helical bearing plates needs to be determined based on traditional bearing capacity theory. See pg. 8 Magnum 2011 Product Catalog Note: S=Single Edge Helix (Standard) D=Dual Edge Helix (DCE)

14 Copyright 2011 – Magnum Piering, Inc. Magnum Piering, Inc. sizing charts are provided for cohesive soils, non-cohesive soils, and weak bedrock. Based on the SPT Blow Count and required ultimate capacity, they can be used to size helical bearing plates. Helix Sizing Charts See pgs Magnum 2011 Product Catalog Example Helix Size

15 Copyright 2011 – Magnum Piering, Inc. Nomenclature 10D12D14D= 10 Diam. DCE, 12 Diam. DCE, 14 Diam. DCE, Triple Helix Lead

16 Copyright 2011 – Magnum Piering, Inc. Product Numbering To finish the product number, the surface coating needs to be selected. Most economical is NG = Non-Galvanized. See pg. 8 Magnum 2011 Product Catalog

17 Copyright 2011 – Magnum Piering, Inc. Surface Coatings See pg. 19 Magnum 2011 Product Catalog Note: All structural capacities shown in Magnum catalog are based on non- galvanized, 75 yr life expectancy in normal soil conditions.

18 Copyright 2011 – Magnum Piering, Inc. Surface Coatings See pg. 19 Magnum 2011 Product Catalog Galvanizing may be specified for extended life or when severe pile corrosion situations dictate.

19 Copyright 2011 – Magnum Piering, Inc. Specification For example CAD drawings and written specifications, see the engineering section of Magnums website. Also, check out the examples in Magnums engineering reference manuals.

20 Copyright 2011 – Magnum Piering, Inc. Contact Information Magnum Piering, Inc PIER (7437) 6082 Schumacher Park Drive West Chester, OH 45069


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