The downhole camera system was developed because of demand by gpes clients to be able to visually observe the drilled shaft sidewall soil strata. Oclcs webjunction has pulled together information and resources to assist library staff as they consider how to handle. Manual for non destructive testing and evaluation of drilled shafts. Bottom of socket ft m length of socket ft m steel casing casing thickness inmm. Jul 07, 2010 new fhwa drilled shaft manual is done. Geodesigns drilled shaft inspection camera dsic can observe the condition of the bottom surface of a drilled shaft and measure the amount of any sediment. The drilled shaft inspection manual will help the inspector understand the proper construction procedures necessary for inspecting and installing a drilled shaft foundation. Ca s 1 inspection record for drilled shafts back title. Simon1 the sediment thickness at the bottom of a drilled shaft before the placement of concrete plays a signi. Construction procedures and design methods publication no. In general, drilled shafts will have a higher resistance against axial and lateral loads than driven piles. Augered castinplace pile seminar 2004, new york, ny. Guide for inspection of elevators, escalators, and moving walks see other formats.
Fhwaif99025 updated june 2000 errata page 5, line 15. All contributors are commended for their volunteer efforts. July 7, 2010 robert thompson although i have known for several weeks that the manual was finished i work for one of the authors, after all. The drilled shaft inspector s manual will provide the individual with a working knowledge of drilled shaft installation. The special inspection manual is organized into ten chapters with five appendices. An investigation of the natural microscale mechanisms that cause volume change in expansive clays. While its use is not required, this checklist has been prepared to provide the field inspector a summary of easy toread stepbystep requirements relative to the proper construction of drilled shafts section 516 of the standard specifications. User s manual for laterally loaded pile analysis program for the microcomputer, com624p version 2. Amp is the professional testing agency under contract with iaei and nfpa to assist in the development, administration, scoring and. Slurry sand content and concrete interaction in drilled shaft construction. In the case of super structure members such as bridge girders, the inspection process can. It should also be helpful to train beginning geotechnical engineers with limited first hand experience or for geotechnical engineers who are training inspectors. However, uncertainty about the behavior of the drilled shaft has forestalled widespread adoption.
Drilled shafts installed in lakes or rivers require use of a casing placed from above the water surface to a minimum embedment into the river or lake bottom. Geoinstitute international conference on drilled foundations, orlando. Drilled shafts fhwa us department of transportation. New device for measuring drilled shaft bottom sediment thickness. These procedures have been incorporated in the august 2004 update of this handbook. It measures both the thickness of soft material or debris that may be covering the bearing strata, providing a force and displacement in numerical and graphical form. Drilled shaft inspector s manual with pileco pile capacity guide on. International association of foundation drilling, frederick c. Drilled shaft inspectors manual with pileco pile capacity guide on. This manual may be used as a guide for the construction of test drilled shafts and production drilled shaft foundations. However, formatting rules can vary widely between applications and fields of interest or study. Identify and interpret applicable 455 specifications. Dfi, csl task force of dfi codes and standards, drilled shafts and testing. Oclcs webjunction has pulled together information and resources to assist library staff as they consider how to handle coronavirus.
Drilled shaft inspectors manual, second edition, 2004, dfi, adscdrilled shaft inspectors manual adscdfi joint caissondrilled shaft committee. Course number fhwanhi2070 course title drilled shaft foundation inspection drilled shaft foundation inspection is a standalone course developed to provide a basis for local, regional, or national qualification of drilled shaft foundation inspectors. Shaft quantitative inspection device squid for drilled. The goal of this course is to provide inspectors with practical. Originally, drilled sha were designed to support a load by point bearing in hard material such as rock or shale. Drilled shaft foundations the purpose of a drilled shaft foundation is to transmit load from a structure to the soil without settlement. Users manual for laterally loaded pile analysis program for the microcomputer, com624p version 2. Drilled shafts have been used on a limited scale for many years as an alternative to driven piles in a variety of foundation problems. Testing agency applied measurement professionals, inc. Our evaluation of this tipbearing surface enables us to design highcapacity drilled shafts that can save time and money during construction. The drilled shaft inspectors manual will provide the individual with a working knowledge of drilled shaft installation. Drilled shaft inspectors manual, second edition, 2004 proceedings of the 14th annual members conference, 1989, baltimore, md realizing dfis potential a parallel to baltimores renaissance dfincsuasce seminar, design and construction options for heavy load bearing foundations, 1988, raleigh, nc.
A drilled shaft transfers load friction and point bearing shafts with or without bells are. Structures, california foundation manual and new york state department of. Resistivity tomogram, pennsylvania bridge site in karst hiltunen and roth, 2004. Deep foundations institute dfi drilled shaft technical. The shaft quantitative inspection device squid system is a new technology for quantitatively assessing the quality of the bottom surface of a bored pile or drilled shaft. Drilled shafts construction procedures and lrfd design. Drilled shaft diameters can range from 1 to 10 feet, and lengths up to 150 feet can be achieved using common drilled shaft construction equipment. Slurry sand content and concrete interaction in drilled shaft.
Continuous inspection the ibc specifies the frequency of each inspection task as either periodic or continuous. Before placing the rebar cage, the bottom of the shaft will be cleaned out thoroughly. Construction procedures and lrfd design methods update and revision of nhi manual by o. The second edition of the ibc was published in 2003 and contained very minor revisions to chapter 17. Amazon second chance pass it on, trade it in, give it a second life. Drilled shaft inspector s manual with pileco pile capacity guide. The intent of this manual is to provide guidelines for inspectors of drilled shaft construction otherwise referred to as drilled piers, caissons or bored piles.
Cas1 inspection record for drilled shafts back title. Numerous and frequentlyupdated resource results are available from this search. Many designers have been uncomfortable designing shafts for end bearing because of. Deployment of the geosynthetic reinforced soil integrated bridge system from 2011 to 2017, synthesis. New device for measuring drilled shaft bottom sediment. As in any foundation, drilled shafts must be designed to carry dead and live load, and be stable enough to resist the forces of wind, water current and the effects of scour and moisture changes in the soil. It is used as the reference manual for use with the threeday national highway institute nhi training course no. In order to allow downhole visual inspection of the bottom of the shaft, the contractor was required to case the hole for the full length. Drilled shaft inspectors manual florida department of. To promote, for our members, the utilization and advancement of both drilled shaft construction and drilled shaft design. Deep foundations institute dfi drilled shaft technical committee. To promote, for our members, the utilization and advancement of both drilled shaft construction and. Test document for the constuction manual div 01 gen req.
Drilled shaft report example please note a sample foundations report is included here for reference. Amount of uncertainty in the methods utilized to design drilled. Bottom cleanliness has an important effect upon shaft bearing, shear near the bottom of a shaft, and shaft settlement. This manual embraces both construction and design of drilled shafts, and addresses the. Drilled shaft the international association of foundation. Design methods, technical manual prepared for federal highway. Drilled shaft inspectors manual with pileco pile capacity. Drilled shaft inspectors manual, second edition, 2004 2004 drilled shaft committees of dfi. If the shaft has any secondary reinforcement, or even a second rebar cage, it can be noted by. The structural steel inspectors workbook, 2014 edition, is written by bob shaw of the sstc and published jointly by the sstc and the international code council. New device for measuring drilled shaft bottom sediment thickness j. Sidi and sidii placed in service in 1994 have visually inspected the drilled shafts for many bridges over the years.
Drilled shaft inspectors manual with pileco pile capacity guide. Specific task training program drilled shaft foundation construction inspection s32 class reference guide revised february 2016 6 the drilled shaft. Q f r r a a should be q f r r t a page 110, figure 6. Drilled shaft foundations should be designed at the service limit state to meet the tolerable movements for the structure. The comments contained in this article apply to both the ibc 2000 and the ibc 2003. First edition, 1990 drilled shaft inspectors manual, second edition, 2004. Drilled shaft inspector course cbt florida department of. This manual is intended to provide a technical resource for engineers responsible for the selection and design of drilled shaft foundations for transportation structures. Inspectors manual for construction rehabilitation of concrete pavement student guide. Specific task training program drilled shaft foundation construction inspection s 32 class reference guide revised february 2016 6 the drilled shaft.
The minimum clearance between reinforcing bars shall be 17. These guidelines along with the drilled shaft inspectors manual, prepared by. This committee often collaborates with adscs drilled shaft committee. Do not define the top of the drilled shaft in the normal manner a set distance below finished grade.
Dec 12, 2012 this manual is intended to provide a technical resource for engineers responsible for the selection and design of drilled shaft foundations for transportation structures. A drilled shaft was installed through about 12 m of soil and socketed approximately 3 m into an underlying rock formation. Reliable information about the coronavirus covid19 is available from the world health organization current situation, international travel. Increasing the size of the base is commonly referred to as underreaming or belling. This item shall govern for the construction of foundations consisting of reinforced concrete drilled shafts andor nonreinforced concrete drilled shafts, with or without bell footings of the size and at the location shown on the plans. The intent of this manual and course is to provide an introduction to the construction and inspection of drilled shafts. Home drilled shafts drilled shaft inspectors manual. Some revision of the inspection and testing committees 1979 edition was performed in 1991 with no final product resulting. It is provided as an example of content, format, and organization representative of a typical foundation investigation and recommendation report for a drilled shaft foundation.
Available in pdf on flashdrive or now available printed manual 6x9 since march 2016. To become familiar with drilled shaft installation techniques, a working knowledge of the tools used by contractors is also essential. The term field inspector fi refers to field station personnel who serve as construction representatives and perform inspection and observation activities on behalf of a regional contracting officer. January 1, 2004 see all formats and editions hide other formats and editions. This workbook can be used as a training tool or study guide for structural steel building inspectors, especially for those preparing to take the s1 andor s2 special inspector.
As a critical part of the drilled shaft quality control fhwa, 1999, inspecting the bottom cleanliness of drilled shafts has always been challenging to contractors, engineers, and field inspectors, especially in the situation of the wet construction method, when direct visual. Drilled shaft inspectors manual, second edition, 2004, dfi, adsc drilled shaft inspectors manual adscdfi joint caissondrilled shaft committee the drilled shaft inspectors manual is the result of a joint effort between the deep foundations institute dfi and the association of drilled shaft contractors adsc. A design then evolved using smaller diameter shafts with bell footings. Manual for non destructive testing and evaluation of. Rhyner, dfi chair and dan cadenhead, adsc chair soft cover, 72 pgs. The additional capacity is a result of the size of the drilled shaft. The drilled shaft inspectors manual is the result of a joint effort between the deep foundations institute dfi and the association of drilled shaft contractors adsc.
Shaft quantitative inspection device squid for drilled shaft qa. Manual on design and construction of driven pile foundations. Bells can be constructed at 45 degree or 60 degree angles. Drilled shaft inspector s manual, second edition, 2004 2004 drilled shaft committees of dfi. The strength limit state for lateral resistance is only structural 4.
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