Rammed aggregate piers?

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Author Message David G. Axt, CCS, CSI ,SCIP Senior Member Username: david_axt Post Number: 1843 Registered: 03-2002 Posted on Thursday, December 17, 2020 - 03:31 pm:    What CSI specification number shat I recommend to Civil for Rammed Aggregate Piers? Thanks. David G. Axt, CCS, CSI, SCIP Specifications Consultant Axt Consulting LLC Dave Metzger Senior Member Username: davemetzger Post Number: 785 Registered: 07-2001 Posted on Friday, December 18, 2020 - 11:16 am:    David: There is an existing number, 316613.13 Rammed Aggregate Piles (316613 is Special Piles). MasterFormat seems to use "piles" and "piers" somewhat interchangeably. David G. Axt, CCS, CSI ,SCIP Senior Member Username: david_axt Post Number: 1844 Registered: 03-2002 Posted on Friday, December 18, 2020 - 03:57 pm:    Thanks! David G. Axt, CCS, CSI, SCIP Specifications Consultant Axt Consulting LLC George A. Everding, FCSI, CCS, CCCA, AIA Senior Member Username: geverding Post Number: 920 Registered: 11-2004 Posted on Friday, December 18, 2020 - 04:12 pm:    Piles are driven, piers are drilled. (Is what I was taught) ken hercenberg Senior Member Username: khercenberg Post Number: 1326 Registered: 12-2006 Posted on Friday, December 18, 2020 - 04:19 pm:    I presume this to be accurate https://civiltoday.com/geotechnical-engineering/foundation-engineering/deep-foundation/117-difference-between-pile-and-pier-foundation Dave Metzger Senior Member Username: davemetzger Post Number: 786 Registered: 07-2001 Posted on Friday, December 18, 2020 - 04:46 pm:    From MasterFormat 2020 Edition 31 62 00 Driven Piles Includes: driven deep pile foundations of various materials for support of structures. May Include: reinforcement in cast-in-place concrete piles and concrete-filled steel piles. Alternate Terms/Abbreviations: pressure injected footings: compacted-expanded base-concrete piles 31 63 00 Bored Piles Includes: bored and deep augured pile and drilled shaft and caisson construction for support of structures. test and production piles. May Include: pile, shaft, or caisson reinforcement. Alternate Terms/Abbreviations: micropiles: screw piles. fixed end caission piles: rock socketed piles. 31 63 23 Bored Concrete Piles 31 63 29 Drilled Concrete Piers and Shafts 31 64 00 Caissons Includes: sunken or driven load-bearing enclosures to protect excavation for foundations, promote substructure construction, and become part of permanent structure. casing and reinforcement. 31 66 00 Special Foundations Includes: foundations of a special design including load-bearing wall products and systems, crib stabilized, reinforced, and unit walls. May Include: retaining walls Is that clear as mud? Guest (Unregistered Guest) Unregistered guest Posted on Friday, December 18, 2020 - 05:07 pm:    I currently on a project that is using "Drilled Displacement Columns" Could fit in any of above categories? Yeah...clear as (Bay) Mud! John Bunzick Senior Member Username: bunzick Post Number: 1832 Registered: 03-2002 Posted on Saturday, December 19, 2020 - 02:53 pm:    I thought piles supported the building in large part by the friction between the soil and the pile on the sides of the pile. In contrast, piers supported the building by resting on suitable material at the bottom. Mark Gilligan SE, Senior Member Username: mark_gilligan Post Number: 946 Registered: 10-2007 Posted on Tuesday, December 22, 2020 - 03:02 am:    To further confuse the discussion I seem to recall that they are differentiated by their aspect ratio. Since rammed aggregate piles are more properly a means of soil improvement with the geotechnical engineer taking the lead my advice is to call them what the geotechnical engineer wishes to call them. The geotechnical engineer should also write the technical portions of the specification scetion.