This Reference Specification covers requirements for drilled pier construction and applies to drilled piers of 30 in. ( mm) diameter and larger. The Contractor. ACI – Specifications for the Construction of Drilled Piers – Download as PDF File .pdf), Text File .txt) or read online. ACI Reference Specification for the Construction of Drilled Piers. standard by American Concrete Institute, 01/01/ View all.

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Place concrete within the time limit during which the excavation remains clean and stable and the concrete maintains the required slump.

Shopbop Designer Fashion Brands. Citations are based on reference standards. If sections or parts of ACI Specification Checklists assist the specifier in selecting and specifying project requirements in the Project Specifications.

Drilled pier—A foundation element, with or without an enlarged bearing area, extended downward by drilling through earth materials, water, or both, to an acceptable design depth and filled with structural concrete. Amazon Restaurants Food delivery from local restaurants.

Product details Paperback Publisher: Provide steel casing for shaft excavation where required. Specify variations from slurry properties given in Table 2. Responsibilities for project participants must be defined in the project specifications. Compensation should be established based on unit bid prices for added probes and deeper probes.


If the socket requires a specific groove width, depth, and spacing, this should be specified.

/R Reference Specifications for the Construction of Drilled Piers and Commentary

This specification covers requirements for drilled pier construction. Mix, store, and transport slurry using equipment made for these purposes. Advanced Search Find a Library. Normally, the constructed pier diameter will equal or exceed the design pier diameter because the drill tools typically drill a slightly oversized shaft due to minor scraping as the tools come in and out of the pier.

In rock, acceptance of the bearing stratum will often depend on a predetermined seam criteria to be used in evaluating probe holes drilled to confirm rock stratum. For most piers with partial-length reinforcement, 1. If movements greater than 6 in. No simple post-construction method is available to conclusively determine the absence or presence of a pier defect.

One is when a permanent steel casing has been inserted in an oversized hole that might cave and collapse against the casing so that the amount of void space cannot be observed. Share your thoughts with other customers.

A significant reduction in shaft diameter will usually require an increase in the concrete strength to maintain stresses below acci values. In these cases, additional specified procedures are advisable to minimize the likelihood of undetected defects of significant magnitude. Make diameter of excavation such that the void space outside any temporary casing is minimized.


R Specification for the Construction of Drilled Piers: ACI: : Books

More like this Similar Items. Controlled slurry—Slurry that is controlled to conform to specified properties. Work—The entire construction or separately identifiable parts thereof that are required to be furnished under the Contract Documents.

Provide site supervisor and drillers, each with a minimum of 3 years of acceptable experience in installing similar types of drilled piers. Amazon Second Chance Pass it on, trade it 33.61, give it a second life.

In situations where the excavated material is suitable for fill, the location 3366.1 on-site disposal can be specified.

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Discover Prime Book Box for Kids. For side-resistance piers, the level of bearing stratum and material type are confirmed by observation 363.1 soil or rock from cuttings and rate of penetration. Your request to send this item has been completed.

Any deviations should be based on local experience with the soil formation and recommendation of the Design Geotechnical Engineer. Add a review and share your thoughts with other readers.