What CSI specification number shat I recommend to Civil for Rammed Aggregate Piers? Thanks.
David:
There is an existing number, 316613.13 Rammed Aggregate Piles (316613 is Special Piles).
MasterFormat seems to use “piles” and “piers” somewhat interchangeably.
Thanks!
Piles are driven, piers are drilled. (Is what I was taught)
I presume this to be accurate
https://civiltoday.com/geotechnical-engineering/foundation-engineering/deep-foundation/117-difference-between-pile-and-pier-foundation
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?
I currently on a project that is using “Drilled Displacement Columns” Could fit in any of above categories? Yeah…clear as (Bay) Mud!
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.
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.