13 Drill Shaft

GLOSSARY OF TERMS

Adhesion

ADSC

Aggregate

Air Lift

Allowable Load

Anchor Pier

Artesian Water

Attapulgite

ASTM

Auger

Axial Load

Backfill

Bailing Bucket

Batter

Bearing Stratum

Bell

Belling Bucket Underreaming Bucket

The property of a substance (in our case, cohesive soil) to stick, cling, or adhere to a solid structural element such as a concrete pier or pile, and thus establish a resistance to shearing movement between the soil mass and the structural element. Association of Drilled Shaft Contractors (The International Association of Foundation Drilling Contractors), Address P. O. Box 75228, Dallas, TX 75228. The stone used in making concrete. Fine aggregate is sand; coarse aggregate, gravel or gravel-size crushed stone. A device used to clean material from the bottom of a fluid-filled shaft, usually constructed using an open-ended steel pipe into which compressed air is injected near the bottom in an upward direction. The load which cannot be exceeded without incurring (in the opinion of the designer) risk of damaging structural movement. A pier designed to resist uplift or lateral forces. Subsurface water underlying a confining bed which has sufficient pressure to rise above existing ground (or water surface) when encountered in cased holes during drilling. A clay mineral consisting of complex magnesium aluminum silicates. It occurs naturally near Attapulgus, Georgia where it is mined as Fullers earth. Also made into commercial drilling mud useful in salt or brackish water environments. American Society for Testing and Materials A helical rotary tool for drilling a cylindrical hole in soil and/or rock. That portion of the load on a pier or pile which is in the direction of its axis. Any material placed in an excavated area, for the purpose of raising the grade in the area. A bucket-like tool for removing water from the hole during drilling or in preparation for concrete placement. Angle with the vertical, normally expressed as a ratio of horizontal to vertical (i.e., 1:4= 1 horizontal to 4 vertical). A soil or rock stratum that is expected to carry the drilled shaft load (either by end bearing or by sidewall friction, or by a combination of the two). Enlargement of the lower end of a shaft excavation, to increase the bearing area of the drilled shaft (Also called underream). A drilling bucket tool with expanding cutters that can enlarge the bottom of the drilled hole, to form a bell or underream. See Bucket Auger, Drilling Bucket.

Bentonite

Boulder

Bucket Auger (or Drilling Bucket)

Cage

Cake (Filter Cake)

Calcarenite

Calcilutite

Calyx (or Shot) Barrel

Capillarity

Carbonate Rocks

Casing

Caving (or Sloughing)

Changed Conditions

Chert

Clay

The mineral, sodium montmorillonite, a highly expansive colloidal clay; the basis for a type of commercial drillers mud A rock, usually rounded by weathering and abrasion, greater than 200 mm in size. A cylindrical rotary drilling tool with a hinged bottom containing a soil cutting blade; spoil enters the bucket and is lifted out of the hole, swung aside, and dumped by releasing the latch on the hinged bottom. Reinforcing bars preassembled for quick placing in a drilled shaft. A layer of clay or clayey soil, built up on the wall of a boring drilled with slurry (drilling mud, bentonite, etc.), having the effect of forming an impermeable lining to prevent (or diminish) loss of water from the hole, and maintain slurry pressure against the wall of the hole. Mechanically deposited carbonate rocks consisting of sand size carbonate grains (1/16 to 2 mm diameter) Refers to a rock composed of more than 50% silt and clay size carbonate particles. A core barrel without hard-metal cutting teeth, with which the rock is cut (or ground up) by chilled steel shot which roll and are ground up under the rotating steel edge of the barrel. The upward movement of water, due to effects of wetting and surface tension, that occurs through the very small void spaces that exist in a soil mass. Rocks composed of more than 50% by weight, of carbonate minerals. An open-end steel pipe installed by drilling, driving or vibrating; to support the wall of a hole; to seal out groundwater; or to protect the concrete of the shaft from contamination by sloughing of the sides of the hole. A soil that tends to fall into an uncased hole, during or after the drilling. Usually a cohesionless soil. Job conditions, which differ, substantially from conditions as represented in the plans and specifications, and/or the contract documents. A hard, dense microcrystaline sedimentary rock, consisting chiefly of interlocking crystals of quartz. It may contain amorphous silica (opal). Chert occurs principally as nodular or concretionary segregations, or nodules, in limestone and dolomite, and less commonly as layered deposits, or bedded chert. The term flint is equally synonymous. A mineral particle of any composition having a diameter less than 0.002 mm.

Cleanout Bucket

Coarse-Grained Soil

Cohesion

Cold Joint

Concrete Pump

Continuous Flight Auger

Coquina

Core Barrel

Crane Carrier

Crowd

Cuttings

Dense

Desander

Dewatering

Diatomaceous Earths

Dolomite

A cylindrical tool used for removing cuttings from the shaft bottom. The bucket typically has a bottom that opens up when turned clockwise and closes when turned counterclockwise. The soil types which have particles large enough to be seen without magnification. The coarse-grained soils include the sand and gravel (or larger) soil particles. The bonding or attraction between particles of certain fine-grained soils that enhances shear strength and is independent of confining pressure. Surface where concrete placement was interrupted then later resumed. A truck mounted pump specially designed to transfer fluid concrete through lines (hoses and pipes) to deliver ready mix to locations not readily accessible otherwise. A string of helical augers and a cutting head, used to bore a hole in the earth, into which a pile section may be set, concrete cast in place, or tieback grouted. A soft, porous limestone made up largely of shells, coral, and fossils cemented together. A cylindrical rock-drilling tool, designed to cut an annular space around a central cylindrical core of rock, which can then be removed to classify the material or in the case of a drilled shaft removed to deepen the hole. A specially built truck for mounting a drill rig or for carrying a crane. The soil types which have particles large enough to be seen without magnification. The coarse-grained soils include the sand and gravel (or larger) soil particles. Particles of soil or rock resulting from the cutting action of drilling or augering a hole. See also Spoil. Compact A specially designed piece of equipment consisting of a series of screens and hydrocyclones which remove sand and silt particles from the slurry used in constructing a fluid-filled excavation. (1) The removal of water from a construction area, as by pumping from an excavation or location where water covers the planned working surface. (2) Lowering of the groundwater table in order to obtain a dry area in the vicinity of an excavation which would otherwise extend below water. Silts containing large amounts of diatoms-the siliceous skeletons of minute marine or freshwater organisms. A carbonate rock composed of more than 50% by weight, of the mineral dolomite.

Downdrag

Drilled Pier/ Drilled Shaft

Drilling Bucket

Drilling Mud, Mud, or Slurry

Elastic Movement

Elephants Trunk

End Bearing

Extractor

Fill

Fine-Grained

Fixed-Head Pier

Friction/ End-bearing Pier

Friction Shaft

Fullers Earth

A downward force exerted on a drilled shaft, pile, or other structural element by settling soil. Sometimes called negative skin friction. A reinforced or unreinforced concrete foundation element formed by drilling a hole in the earth and filling it with concrete. Also called a caisson, or a large-diameter bored pile. A closed rotary boring tool with its cutting edge at its base. Spoil is removed from the bucket by lifting it out, swinging it to one side of the hole, and releasing the hinged bottom of the bucket. A fluid mixture of water and clayey soil, or commercial drillers mud which may be bentonite or attapulgite. Movement under load which is recoverable when the load is removed. A collapsible conduit of fabric or plastic which, when coupled to the bottom of a concrete hopper, directs the concrete to a point near the center of the reinforcing cage to prevent concrete from striking the cage or the sides of the shaft. The portion of load carrying capacity a shaft or pile has due to the end area bearing on the material below. A device for pulling piles or casings out of the ground. It may be an inverted steam or air hammer with yoke so equipped as to transmit upward blows to the pile body, or a specially built extractor utilizing this principle. Vibratory hammers/extractors may be especially effective. Any man-made soil deposit. Fills may consist of soils that are free of organic matter and that are carefully compacted to form an extremely dense, incompressible mass, or they may be heterogeneous accumulations of rubbish and debris. Refers to silt and clay-sized particles which exist in a soil. A pier whose top, when deflected laterally with application of lateral force, is so restrained that the pier axis at the top must remain vertical during such movement. A pier that achieves support from the combination of side friction and tip (end) bearing. A pier that derives its resistance to load by the friction or bond developed between the side surface of the pier and the soil or rock through which it is placed. Soils having the ability to absorb fats or dyes. They are usually highly plastic, sedimentary clays.

Full-Scale Load Test

Geotechnical Engineer

Grains

Grain Size

Gravel

Ground Loss

Groundwater Level

Hardpan

Head

Hollow-Stem Auger

Hydraulic Pump

Impervious

A load test made on a full-scale shaft or other structural element, with the load carried at least to the structural design load, and preferable to twice (or more) the design load. An engineer with specialized training and knowledge of structural behavior of soil and rocks, employed to do soil investigations, to do design of structure foundations, and to provide field observation of foundation investigation and foundation construction. Discrete particles larger than 0.074 mm. They may form the rock framework, similar to sand grains in a sandstone, or they may be subordinate to smaller particles in the rock. A term relating to the size of grains. (See above) Small stones or fragments of stone or very small pebbles larger than the particles of sand, but often mixed with them. Generally 4.76 to 75mm in size. (Stones 75 to 300 mm are usually called cobbles. Subsidence of surface of ground adjacent or close to a shaft excavation, caused by soil moving into the excavation laterally during drilling, or during dewatering after drilling is complete. Common in soft organic soils or clays, and cohesionless soils below the water table. A shallow pit, excavated adjacent to a boring location, used to contain drilling mud (slurry) during drilling. A term that should be avoided by the engineer. Originally, it was applied only to a soil horizon that had become rocklike because of the accumulation of cementing minerals. The name implies a condition rather than a type of soil. Shortened form of the phrase pressure head, referring to the pressure resulting from a column of water or elevated supply of water. An earth auger with an end bit on a hollow center shaft. The hydraulic pump is the same and performs the same functions as the electric submersible pump except it is hydraulic. Impervious soil is soil in which the spacing of the soil particles is so close as to allow only very slow passage of water. For example, movement of water through a typical clay (an impervious soil) may be only 1/1,000,000 as fast as through a typical sand.

Kelly bar (or Kelly)

Laitance

Lateral Load

Limestone

Load Cell

Matrix

Micrograined

Mud

Mud Pit

Mudding-In

Multiple Underreams

Moisture Content

Natural Moisture Content

Necking

Negative Skin Friction

The kelly bar transfers the rotary and pull-down force to the drilling tools. The kelly bar is also used to raise and lower the tools in the shaft. It may be solid or hollow with two or more bars telescoping inside each other. The ability of the bar to telescope, allows excavation to greater depths than the boom height would otherwise allow. A fluid mixture of water, cement, and fine sand that appears at the top of concrete soon after pouring That portion of load that is horizontal, or at 90 to the axis of a pier or pile, or of the supported structure. A carbonate rock composed of more than 50%, by weight, of the mineral calcite. A device for measuring the pressure exerted between the soil (or rock) and a structural element (e.g., the bottom or side of a pier); used with a hydraulic or electrical indicating or recording instrument at ground surface. The natural material in which any fossil, pebble, crystal, etc., is embedded. A grain-size term pertaining to carbonate particles smaller than 0.0625 mm and larger than .004 mm diameter. See Drilling Mud A shallow pit, excavated adjacent to a boring location, used to contain drilling mud (slurry) during drilling. The technique of stirring soil and water by and auger; sometimes with the addition of commercial drillers mud, to form a slurry as the hole is advanced by auger drilling. Additional underream cut in a bearing soil, at elevations above the bottom underream, to force shearing resistance in the soil into a larger peripheral surface. The reduction in diameter in a section of a drilled shaft. Moisture content in-situ, at the time of measurement or investigation. May be subject to seasonal variation. The reduction in diameter in a section of a drilled shaft. Effect of settling soil that grips a pile or pier by friction and adds its weight to the structure load. Also called Downdrag.

NX Core

Oolite

Over Reaming

Piezometric Head

Plasticity

Rebar

Reverse Circulation

Rig, Drilling Rig

Rock

Rock Auger

Rock Socket

Rotary Boring

Rotary Drill Rig

Sand

Seepage

Rock core taken with an NX core barrel, which cuts a core 60mm in diameter. Small spherical or subspherical carbonate accretionary grain generally less than 2.0 mm in diameter. Enlarging the diameter of the shaft to remove any slurry cake build up. (See Artesian Pressure) Term applied to fine-grained soils (such as slays) which when moist can be remolded without raveling or breaking apart. A bar of reinforcing steel. A counterflow method of circulating drilling fluid and spoil in a drill hole. In the direct circulation method, drilling fluid is pumped down a hollow drill pipe, through the drill bit, and back to the surface in the annular space around the drill pipe; and the cuttings are carried to the surface by the flow. In the reverse-circulation or counterflow system, drilling fluid is pumped out of the drill stem at the top circulated through a pit where cuttings are removed, and returned to the annular space around the drill stem. Circulation is upward inside the drill stem and downward outside it. A machine for drilling holes in earth or rock. A naturally occurring mineral substance cohesively bound by chemical bonds and forming the basic structure of the earths crust. An auger-type drilling tool, equipped with hard-metal teeth to enable it to drill in soft or weathered rock. That portion of a shaft, which penetrates into a rock formation beneath less competent overburden. A method of boring using rotary (as opposed to percussive) means of excavation. A rotary drilling machine powered hydraulically, pneumatically, electrically or mechanically to bore exploratory holes or for installation of drilled shafts, caissons, or in-situ piles. The equipment may use a continuous-flight auger or a rotary table and Kelly bar with various attachments and tools to perform the work. Cohesionless soil whose particle sizes range between 0.074 and 4.76 mm in diameter. Small quantities of water percolating through a soil deposit or soil structure.

Segregation

Settlement

Shaft Inspection Device (S.I.D.)

Sidewall Grooving

Sidewall Shear

Silt

Skin Friction

Slurry

Soil Auger

Sonotube

Spacers

Spoil

Squeezing Ground

Standard Penetration

Test (SPT) (N)

Separation of poured concrete into zones of coarse aggregate without fines, and sand-water-cement without coarse aggregate. (1) The amount of downward movement of the foundation of a structure or a part of a structure, under conditions of applied loading. (2) The downward vertical movement experienced by structures or soil surface as the underlying supporting earth compresses. The shaft inspection device is an instrument that allows the inspector to see the bottom of the drilled shaft. It has a video camera that is lowered to the bottom of the drilled shaft. It can also measure the thickness of sediment on the bottom of the shaft and sample sidewall soils. The cutting of circular or spiral grooves in the walls of a drilled shaft hole in rock or soil, with the objective of improving sidewall support. Frictional resistance to axial movement of a pier or pile, developed between the soils surrounding the shaft and the peripheral surface of the shaft. (Does not include resistance to movement of an enlarged base, due to development of shearing strains within the soil below the base). A fine-grained nonplastic soil; often mistaken for clay, but quite different in its behavior. (Particle sizes ranging from 0.002 to 0.074 mm). Resistance to shearing motion between the concrete of the shaft and the soil or rock in contact with it. See Drilling Mud The soil auger is used for cutting and removing the soil from the shaft volume. It typically has several flights of 30 degrees or less. A cylindrical form of treated cardboard, for forming round columns of concrete; a commercial product. Spacers are used to keep the steel cage centered in the drilled shaft and insure proper concrete cover. The spacers should be concrete wheels o other approved non-corrosive spacing. Soil or rock removed from an excavation; to be wasted or used elsewhere as fill. A soil formation, usually of clay, silt, or organic material, which tends to bulge or squeeze into the hole during drilling, or afterward if the hole is left uncased. The number of blows required to drive a 2-inch O.D., 1-3/8 inch I.D., 24-inch long, split soil sampling spoon 1 foot with a 140 pound weight freely falling 30 inches. The count is recorded for each of three 6-inch increments. The sum of the second and third increments is taken as the N value in blows per foot. (This is ASTM Designation D 1586).

Strain Gauge

Swelling Soil

Telltale

Template

Temporary Casing

Test Hole

Tremie

Tremie Pipe

Twisting Bar

Underream

Underreamer, Belling Tool

An instrument or device for measuring relative motion (compression, elongation, or shear) between two points in a mechanism or in a structural member such as a drilled shaft A soil subject to volume increase caused by wetting, oxidation, buildup of crystals, or relaxation after load removal. A strain indicator, usually comprised of a sleeved free-standing rod cast in place in a drilled pier or pile to measure relative movement between the anchored (embedded) tips of two or more rods or between the rod anchor and the top of the pier or pile. A fixed template is required during all excavation and concreting operations when drilling from a barge. This is to maintain shaft position and alignment. A template is not required on land if the contractor can satisfactorily show that he can maintain proper position and alignment without it. Casing left in place until concrete has been placed, or casing placed as protection for workmen or inspector. With the test hole, the contractor must demonstrate that his construction methods will work. A test hole is typically the same size as the shafts to be constructed. (1) (verb)To place concrete below water level though a pile, the lower end of which is kept immersed in fresh concrete so that the rising concrete from the bottom displaces the water without washing out the cement content. (2) (noun) The hopper and drop pipe used to place the concrete underwater. The tremie pipe is used to place concrete in the drilled shaft. In shafts constructed by the wet method, the tremie pipe must extend to the bottom of the drilled shaft. In shafts constructed by the dry method, the tremie pipe must extend to within five feet of the shaft bottom. The tremie pipe serves several purposes. It transports the concrete through the slurry. It keeps the concrete from segregating during placement. Also, it helps keep the concrete from mixing with the drilling slurry at the slurry/concrete interface. A tool attached to the kelly, used for screwing down casing through caving or squeezing soil. Sometimes used for pulling casing. Enlargement of the lower end of an augered or drilled pier hole to increase its bearing area. Also called bell. See Belling Bucket.

Unit Weight

Uplift

Vibratory Driver/ Extractor

Vug

Walking Off

Water Content

Water Table

The weight per unit volume of a material such as soil, water, concrete, and so on. Typically expressed as pounds per cubic foot, rams per cubic centimeter, or kilograms per cubic meter. An upward force exerted on a pier, pile, or other structural elements, by expanding soil or rock, hydraulic pressure, or structural loading. A pile-driving and extracting machine which is mechanically connected to a pile or casing and loosens it while driving or pulling by oscillating it through the soil. Power source may be either electric or hydraulic. A small cavity in a vein or in rock. Tendency for a rotating bit to deflect laterally when encountering harder, deflecting layer of rock or irregular surface. The ratio of the quantity (by weight) of water in a given volume of soil mass to the weight of the soil solids, typically expressed as a percentage. The subsurface elevation at which free water will usually be present. Also called groundwater.

VOLUMES OF A SHAFT

EXAMPLESEQUATIONS

SHAFT VOLUME D2 V= x L3

25

4V= x L

V= x 253.142 x 94

V= x 2528.284

3

L

Shaft diameter= DShaft length= L= 3.142

D2 V= x L

D

V= 176.75 ft3 or176.75/27= 6.55 cyds

V= 7.07 x 25

4

SHAFT VOLUME EXERCISE 1

Shaft diameter= 4Shaft length= 30

4 D2

4V= x L

V= x

4

30= 3.142

D2 4

V= x L30

V=

V= x

V= ft3 orV= cyds

SHAFT VOLUME EXERCISE 242

D2 4V= x L42

30

Shaft diameter= 42Shaft length= 30= 3.142

D2 4

V= x L30

V=

V= x

V= x

V=

V= ft3 orV= cyds

CI9RCUMFERENCES

D = diameter = 2 times R (radius)Reinforcing

CIRCUMFERENCE OF SHAFT/REINFORCING CAGE

= 3.142

CIRCUMFERENCE OF SHAFT (C) = DR

cage

Concretecover

CIRCUMFERENCE OF CAGE

C = (D 2 x Reqd Concrete Cover)

SI CONVERSION FACTORSAPPROXIMATE CONVERSIONS FROM SI UNIT

Symbol When You Know Multiply By To Find Symbol

LENGTH

mmmmkm

millimetersmetersmeterskilometers

0.0393.281.090.621

inchesfeet

yardsmiles

inftydmi

AREAAREA

mm2 square millimeters 0.0016 square inches in2m2 square meters 10.764 square feet ft2ha hectares 2.47 acres ackm2 square kilometers 0.386 square miles mi2

VOLUMEml millimeters 0.034 fluid ounces fl oz l liters 0.264 gallons galm3 cubic meters 35.71 cubic feet ft3m3 cubic meters 1.307 cubic yards yd3

MASS

g grams 0.035 ounces ozk kil 2 205 d lbkg kilograms 2.205 pounds lb

TEMPERATURE0C Celsius 1.8 C + 32 Fahrenheit 0F

WEIGHT DENSITY

g/cc grams per cubic centimeter 62.4 poundforce/cubic foot pcfg g p p pkN/m3 kilonewton/cubic meter 6.36 poundforce/cubic foot pcf

FORCE and LOAD

N newtons 0.225 poundforce lbkN kilonewtons 225 poundforce lbkg kilogram (force) 2.205 poundforce lbMN meganewtons 112 4 tons (force) tMN meganewtons 112.4 tons (force) t

PRESSURE and STRESS*

kPa* kilopascals 0.145 poundforce/square inch psikPa kilopascals 20.9 poundforce/square inch psiMPa megapascals 10.44 tons per square foot tsfkg/cm2 kilograms per square cm 1.024 tons per square foot tsf

*Notes: 1 kPa = kN/m2 = one kilopascal = one kilonewton per square meter. For dimensionless graphs and equations, a reference stress of one atmosphere can be used, such that a = patm = 1 bar = 100 kPa 1 tsf 1kg/cm2.

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PROJECT CONTRACT NO

BENT STATION SHAFT DIAMETER

DRILLED SHAFT CONTRACTOR CERTIFICATION NO. DATE

Slurry Type & Manufacturer :Soil Shaft Length

Water Table Elev. Slurry Meets Specifications? Y NTop Shaft Elev. Rock Socket Length

Construc. Shaft Length Bucket Airlift PumpOther:

Visual Tape/ProbeRecord 5 depths to the bottom of finished shaft:

Casing (Temp / Perm) Casing (Temp / Perm) Casing (Temp / Perm) 1 3Type Type Type

OD (in.) OD (in.) OD (in.) 4Thickness Thickness Thickness

Top Elev. Top Elev. Top Elev.

Length: Length: Length: 2 5

Ave. Shaft Bottom Elev.:Meet Cleanout Specification? Y NMeet Alignment Specifications? Y N

START LOG

INSPECTOR SIGNATURE DATE

NOTES:

TYPE OF CONSTRUCTION

DRILLING SLURRYDIMENSIONSSoil Auger Dia.

DATE/TIME EXCAVATEDSTART

Grd. Surface Elev.

DEPTH ELEVATION

Record and describe all materials encountered during drilled shaft excavation, water table information, depths of seepage and seepage rates, obstructions encountered, equipment used and equip. breakdowns (use additional sheets if necessary).

FINISH SOIL OR ROCK MATERIAL DESCRIPTION AND NOTES

Msd Avg. Shaft Bot Elev.

CLEANOUT METHOD

INSPECTED BY

FINISH:

Msd Top Rock Elev.

Reference Elev.

ELEVATIONS

Rock Auger Dia.

CASING INFORMATION (if applicable)

BOTTOM INSPECTION

BRIDGE NO.

SHAFT NO.

DRILLED SHAFT EXCAVATION LOG

DRY WET

734-2604 (4-2005)

PROJECT BRIDGE NO. CONTRACT NO

BENT STATION SHAFT NO. SHAFT DIAMETER

DRILLED SHAFT CONTRACTOR INSPECTED BY CERT. NO. DATE

REFERENCE ELEVATION SHAFT TOP ELEVATION AT START AT FINISH

DEPTH TO WATER OR SLURRY SHAFT BOTTOM ELEVATION REBAR DESIGN ELEV.

TOP OF ROCK ELEVATION SHAFT LENGTH

SHAFT CONCRETE INFORMATION

Placement Method Volume in Lines Begin Pour: Date: Time:

Free Fall # ID Length Volume End Pour: Date: Time:

Tremie cy Shaft Completion Time:

De-Airing Method cy (including casing removal)

Tremie Plug cy Total Concrete Volume Delivered (TVD)

Tremie Cap Total Volume in Lines (VL) cy Total Concrete Volume In Shaft; cy

Relief Valve cy(=TVD-VL-VW)

Total Concrete Volume Delivered (TVD)


NOTES:

CASING REMOVALOD Finish

Truck No.

Concrete Volume

Arrival Time

Start TimeSlump

Depth To Concrete

NOTES(delays, additives, breaching, casing removal)Finish Time

Tremie Depth

Permanent Casing

Top Elev. Bot. Elev. Start

DRILLED SHAFT CONCRETE PLACEMENT LOG

REBAR CAGE TOP ELEVATION:

WITHIN SPEC?

Estimated Waste Concrete (VW)

REBAR CAGE CENTERED WITHIN SPEC?

YES NO

YES NO

734-2597 (11-2011)




CONCRETING CURVE

Shaft Top

Shaft BottomCONCRETE VOLUME PLACED (cubic meters)

Volume Delivered TVD m3 Notes/Comments:

Volume in Lines VL m3

Wastage VW m3

Volume Placed VP m3(= TVD-VL-VW)

Theoretical Volume VT m3((D2/4)(Shaft Length,m))

OP m3

734-2603 (2-2006)

DRILLED SHAFT CONCRETE VOLUMES

Prior to pouring concrete, a plot should be made showing the theoretical concrete surface (by depth or elev.) vs. concrete volume placed. During concrete placement the actual concrete surface vs. the actual concrete volume placed is then plotted.

DEP

TH/E

LEVA

TIO

N (m

ete

Overpour (VP-VT)

VOLUME CALCULATIONS

BRIDGE NAME PROJECT: CONTRACT NO.:

BRIDGE NO. BENT STATION SHAFT NO. SHAFT DIAMETER INSPECTED BY CERTIFICATION NO. DATE

DRILLED SHAFT CONTRACTOR PRIME CONTRACTOR

Time Excavation Started:

Date/Time Bottom Inspected:

Date Concreting Started:

Plan "As-Built"Measurements Measurements

ReinforcementElev. Before Conc.

Shaft Diameter Ref. Elev. Elev. After Conc.

Shaft Length* Ground Surface or *Was longer shaft approved for payment? Mudline Elev. OUTER (Perm/Temp)

Concrete Volume (cy) Diameter

Concrete Mix Design Groundwater Top Elev.

Concrete Placement MethodElev.: Length

Concrete Slump @ time or pour MIDDLE

Water Inflow Rate gal/min (est.) Diameter

Bottom of Shaft Cleanliness Meets Specification? Top Elev.

Proper reinforcement and CSL tubes installed: Length

Description of bottom of shaft: INNER

Diameter

COMMENTS (Obstructions Encountered, etc.): Top Elev.Length

CSL Test Performed:

CSL Test Results Approved: *If not approved, describe results and resolution

Shaft Approved by:


http://www.oregon.gov/ODOT/HWY/CONSTRUCTION/HwyConstForms1.shtml

734-2598 (8-2009)

As-built location within tolerances?

Mark Deviation from Plan

Note: Forward completed reports to ODOT Bridge Section.

STOPPED

Rock Socket Diameter (if appl.)

Top Elevation

Bottom Elevation

DRILLED SHAFT INSPECTION REPORT

STOPPED BOTTOMTOP

Casing

Bottom of ShaftElevation

Top of RockElevation

N

Yes No

Tremie Free Fall

NoYes

Yes No

No*Yes

CONTRACT NO.

NAME:TITLE:

SIGNATURE:

DATE:Submit a new certificate for subsequent shipments if any of the above information changes.

PROJECT NAME (SECTION)

BID ITEM NO. BID ITEM NAME

FOREIGN MATERIALS (OR OF UNKNOWN ORIGIN) DESCRIPTION AND VALUE OF IRON OR STEEL PRODUCT AS IT IS DELIVERED TO THE PROJECT

DOMESTIC MATERIALS DESCRIPTION

FOREIGN MATERIALS SOURCE INCLUDING MATERIAL OF UNKNOWN ORIGIN (NAME AND ADDRESS

DOMESTIC MATERIALS SOURCE (NAME AND ADDRESS)

AUTHORIZED REPRESENTATIVE* COMPANY* NAME AND ADDRESS:

*May be Contractor, Sub-Contractor or supplier

I declare under penalty of perjury under Oregon and Federal laws that the foregoing is true and correct.

This certification is made for the purpose of establishing materials acceptance under the Contract Special Provisions titled 00160.20(a) Buy America. All iron or steel manufacturing processes, including protective coatings, for the domestic materials described above occurred within the United States of America. Manufacturers' certificates verifying the origin of the above described domestic materials will be kept on file for three years following final payment. Copies will be furnished to the Engineer upon request.

CERTIFICATE OF MATERIALS ORIGIN

734-2126 (9-2006)Original to Project Manager Construction Forms Website: http://www.oregon.gov/ODOT/Hwy/Construction/ConstForms1.shtml

Soil and Rock Classification for Inspectors

Soil and rock classification is typically the duty of the geologists during the subsurface investigation. However, during construction, the inspector is tasked with verifying the subsurface conditions by classifying the materials encountered during excavation. Basic information can easily be collected by the inspector to validate (or possibly not) the foundation investigation. Included here are basic guidelines for filling out the Soil or Rock Material Description and Notes section on the Drilled Shaft Excavation Log.

For more details on soil and rock classification, consult the ODOT Soil and Rock Classification Manual available at http://www.oregon.gov/ODOT/HWY/GEOENVIRONMENTAL/geology_geotechnical1.shtml .

The first challenge in the classification process is the determination of whether the material is rock or extremely weathered, partially cemented or altered material which is more like a soil. Extremely soft or decomposed rock that is friable and can be reduced to gravel size or smaller by normal hand pressure should be classified as a soil, although geologically such material may be recognized as a rock formation.

Any material contacts, whether inferred or observed should be noted on the Drilled Shaft Excavation Log, along with the inference which lead to the conclusion like change in drilling sound or drilling speed.

Basic Soil Classification

The three soil properties that can be readily recorded include soil name, color and plasticity. Table 1 provides soil names and descriptions.

Table 1. Soil Constituents and their Definitions

Soil Name Size Description Boulders > 12 inches Rock particles Cobbles 12 inches to 3 inches Rock particles Gravel 3 inches to Rock particles Sand to greater than material

retained on a #200 sieve Rock particles

Silt Material passing the #200 sieve

Soil that is nonplastic to very slightly plastic and that exhibits little or no strength when air dried

Clay Material passing the #200 sieve

Soil that can be made to exhibit plasticity (putty-like properties) within a range of water contents, and that exhibit considerable strength when air dried

Oftentimes, more than one soil constituent is present. The processes for naming fine grained (silts and clays) and coarse grained (sands and gravels) soil types with multiple components are included in Tables 2 and 3. Soil names include a description (secondary constituent) followed by the primary constituent with the additional constituent last. An example of a fine- grained soil description is Clayey Silt with some Sand. An example of a coarse-grained soil is Sandy Gravel with trace of Silt.

Table 2. Fine-Grained Soil Subclassification

Terms Percent (by weight) of Total Sample SILT, CLAY PRIMARY CONSTITUENT Clayey, Silty Secondary fine-grained Constituents w/some silt, some clay Additional fine-grained Constituents Sandy, Gravelly 30 50%: Secondary coarse-grained Constituents w/some sand, some gravel 15-30%: Additional coarse-grained Constituents w/trace sand, trace gravel 5-15%: Additional coarse-grained Constituents The relationship of clay and silt Constituents is based on plasticity and normally determined by performing

index tests. Refined classifications are based on Atterberg Limits laboratory tests and a Plasticity Chart.

Table 3. Course-Grained Soil Subclassification

Terms Percent (by weight) of Total Sample GRAVEL, SAND PRIMARY CONSTITUENT Gravelly, sandy 30 50%: Secondary coarse-grained Constituents w/some (gravel, sand) 15-30%: Additional coarse-grained Constituents w/trace (gravel, sand) 5-15%: Additional coarse-grained Constituents Silty, Clayey 12-50%: Secondary fine-grained Constituents w/some (silt, clay) 5-12%: Additional fine-grained Constituents w/trace (silt, clay)

ROCK COLOR: From the ODOT Soil/Rock Classification Manual:

Rock color is not in itself a specific engineering property, but may be an indicator of other significant properties such as ground water (e.g., mottling indicating wet/dry cycles), and alteration/weathering. Color may also be an aid in subsurface correlation.

Color should be determined from the wet samples. Common color names should be used; do not use ish or unusual colors.

ROCK HARDNESS: Rock hardness is a measure of rock strength. Besides characterizing one rock unit as a whole any changes in hardness, in some cases witnessed by the speed of the excavation process, should be noted by the inspector. Table 5 below presents the Scale of Relative Rock Hardness.

Table 5. Scale of Relative Rock Hardness

Term Hardness Designation

Field Identification Approx. Strength*

Extremely soft R0 Can be indented with difficulty by thumbnail. May be moldable or friable with finger pressure.

< 100 psi

Very Soft R1 Crumbles under firm blows with point of a geology pick. Can be peeled by a pocket knife. Scratched with finger nail.

100-1000 psi

Soft R2 Can be peeled by a pocket knife with difficulty. Cannot be scratched with fingernail. Shallow indentation made by firm blow of geology pick.

1000-4000 psi

Medium Hard R3 Can be scratched by knife or pick. Specimen can be fractured with a single firm blow of hammer/geology pick.

4000-8000 psi

Hard R4 Can be scratched with knife or pick only with difficulty Several hard hammer blows required to fracture specimen.

8000-16000 psi

Very Hard

R5 Cannot be scratched by knife or sharp pick. Specimen requires many blows of hammer to fracture or chip. Hammer rebounds after impact.

>16000 psi

*Unconfined compressive strength.

October 20, 2011

Working Safely During Installation of Drilled Shaft Foundations What are Drilled Shafts? Drilled Shafts are used worldwide as deep foundation elements for the support of buildings, parking decks, bridges, overpasses, power lines, cellular towers, and similar structures. As with any type of construction activity, there are numerous hazards assoc iated with the installation of drilled shaft foundations. Employers that recognize and address the hazards associated with the installation of drilled shaft foundations will improve workplace safety and health What are some of the hazards? Some the most dangerous hazards an employees faces when working on a drilled shaft project include:

Falls Struck by and caught in between situations Heavy equipment operation Contact with overhead and underground utilities

How can you reduce or eliminate hazards in drilled shaft foundation construction? The following safe work practices may reduce or eliminate the risk of injury or illness for drilled shaft foundation workers: Equipment Many drilled shaft accidents and fatalities involve equipment such as drill rigs, cranes, front end loaders, and ready-mix concrete trucks. Proper equipment inspection and maintenance according to manufacturers recommendations, clear hand signals, back up alarms, keeping within the recommended load ratings, and using trained and authorized operators, can help prevent accidents. Personal Protective Equipment Using personal protective equipment (PPE) such as personal and passive fall protection, high visibility vests, eye and hearing protection, hard hats, gloves, boots, goggles, and face shields could significantly reduce drilled shaft installation injuries. Utility Location All above ground utilities such as power lines must be located and a minimum clearance distance of 10 feet shall be maintained at all times, for voltages up to 50,000V. Greater distances shall be maintained as the voltage increases. Notify the local power company BEFORE of any activity that must take place closer than the minimum 10 foot clearance, and either de-energize, move, or at the minimum insulate the line(s) so contact is prevented. Underground utilities such as electric, natural or petroleum gas, water, communication, sewers must be located using the local Call Before You Dig system prior to any drilling activity begins. The utility must be physically located and then protected from contact (support, re-locate, or removal) to avoid any accidental contact.

Falls Drilled shafts greater than 30 inches in diameter and deeper than six feet require the use of fall protection for all employees exposed to potentially falling into the open shaft during installation operations or after completion of the shaft. Entry into a Drilled Shaft Entry into a drilled should be avoided whenever possible. However entry may be required for inspection, cleaning, tool retrieval, or rescue purposes. No one is to enter a drilled shaft unless:

the person is trained on: air quality monitoring, fall protection, PPE, communication, entry methods, has a trained topside observer and

the shaft itself is properly cased to prevent cave-in. Additional Ways You Can Improve Drilled Shaft Safety You can start by increasing your awareness of drilled shaft installation hazards and making a conscious effort to prepare for emergency situations including fires, equipment accidents, electrical shocks from equipment and wires, and chemical exposures. Minimize hazards by carefully selecting the products you buy to ensure that you provide good tools and equipment. Insure that equipment operators read and follow instructions in equipment operators manuals. Inspect equipment routinely for problems that may cause accidents. Educate your employees on drilled shaft installation hazards and train them on safe behaviors and emergency procedures. Conduct daily Pre-Task meetings to reinforce positive safety behavior and correct negative behaviors or conditions. Hold weekly tool box safety talks to continue employee safety education and training. Install and use fall protection systems around the opening of a drilled shaft. Create a danger zone and keep un-authorized people away from the drilling activities. Review and follow instructions in material safety data sheets (MSDSs) and on labels that come with chemical products and communicate information on these hazards to your workers. Use the free OSHA Consultation Program. For more information about OSHA and the Consultation Program, call 1-800-321-OSHA or visit www.osha.gov.

Drilled Shaft Installation Safety Tips For the Employer

1. The employer must establish a competent person for each project. This is typically the

Superintendent, Foreman or perhaps the drill rig operator.

2. The competent person must insure that all employees are trained in the safe methods of drilled shaft operations as specified in the company safety manual and OSHA requirements.

3. Transport drilling equipment on the road and jobsite properly. Perform pre-trip

inspections, load and unload equipment correctly, know weights and heights of equipment, secure the load, and insure safe access and work area stability.

4. A competent person must inspect all equipment prior to its use. Damaged or otherwise

faulty equipment must be repaired or replaced before drilling activity begins.

5. Select and provide employees with appropriate personal protective equipment (i.e., hard hats, eye and ear protection, gloves). Train employees on the proper use and care of their PPE and enforce its use.

6. Locate all overhead and underground utilities BEFORE work begins. Identify shaft

location and establish a danger zone around the area. Determine which direction the rig will swing to cast off cuttings, and inform all workers. Coordinate all auxiliary equipment operations during shaft installation to avoid struck by accidents.

7. Shafts 30 inches or greater in diameter and 6 feet or greater in depth require some form

of fall protection at the surface of the shaft. A fall protection plan, including a rescue plan, must be in place prior to drilling any shaft.

8. No employee is to enter a drilled shaft for any reason until they have been trained and

authorized to do so. Air quality monitoring shall be performed prior to and during shaft entry. For all drilled shaft entries, observe ADSC Recommended Procedures for the Entry of Drilled Shaft Foundation Excavations.

9. Insure the concrete truck has adequate access to the shaft. Do not allow adjusting the

chute while the truck is in motion. Have the signalperson guide reversing vehicles. Employees must wear eye protection when pouring concrete. Have eyewash available at all times. If pumping the concrete, make sure all hose connections are sound, safety pinned, and have whip checks in place. One person shall signal the pump operator.

10. Conduct daily pre-task safety and production meetings. Maintain employee safety

education with weekly safety meetings. Never allow your employees to become comfortable with the hazards associated with drilled shaft installation.

Drilled Shaft Installation Safety Tips For the Employee

1. The employer must designate a safety supervisor/competent person for each project.

Make sure you are aware of who this person is so you know who to ask safety related questions.

2. Make sure you are trained in the safe methods of drilled shaft operations using the

company safety manual and attend all safety orientations and daily or weekly safety meetings. Ask questions if you are unsure of any procedures.

3. Use caution when assisting with the loading and unloading of drill rig equipment. Be on

the lookout for low clearance, soft soils, or any unsafe conditions when moving the drill rig on the jobsite.

4. All equipment must be inspected and repaired prior to its use by a competent person.

You may assist the competent person in this task. Help inspect ground conditions to insure adequate and level support for the drill dig.

5. Wear the personal protective equipment that you have been issued. Hard hats, eye and

ear protection, and gloves will protect you from injury, but only if you wear them correctly.

6. Before any drilling begins, ask if the underground utilities have been located. Keep a

watchful eye out for overhead power lines and keep the equipment and yourself at least 10 feet away from them at all times.

7. Determine which direction the rig will swing to cast off cuttings. It may be different for

each shaft you drill. Watch out for auxiliary equipment such as assist cranes, loaders, backhoes, skid steers, or others that may be working near the drilled shafts. The operator may not see you due to poor visibility from the equipment. Use properly sized rigging for all loads. Do not work under a suspended load. Use tag lines whenever possible.

8. Shafts 30 inches or greater in diameter and 6 feet or greater in depth require some form

of fall protection at the surface of the shaft. Set up the fall protection device around the shaft and work from the outside. The drill operator is not to drill the shaft without the fall protection device in place. Erect barricades or place a cover over any open shaft that is not completed.

9. Make sure the concrete truck has adequate access to the shaft. Do not adjust the chute

while the truck is in motion. Signal all backing trucks. Wear eye protection when pouring concrete and wash eyes immediately if splashed with concrete. If pumping the concrete, make sure all hose connections are sound, safety pinned, and have whip checks in place. One person shall signal the pump operator.

10. Do not enter a drilled shaft for any reason until you have been trained and authorized to

do so. The shaft must be cased, and air quality monitoring shall be performed prior to and during shaft entry. There are no exceptions to this rule.

Drilled Shaft Inspector Training Page 1 11/22/13

Drilled Shaft Inspectors Training Homework #1

Multiple Choice: For each of the following questions, circle the letter of the answer that

best answers the question.

1. At the time of concrete placement for a 3-foot diameter drilled shaft, a dry shaft is _____

A. A shaft that requires casing for excavation to its design depth. B. A shaft that requires slurry to stay open. C. A shaft with no more than 3 inches of water present in the bottom of the excavation at the

beginning of the pour. D. A shaft with 12 inches or more of water.

2. Auger bits are generally classified as ____

A. Button bits B. Earth or Rock C. Flighted or unflighted D. None of the above.

3. In determining RQD, core pieces equal to or over ___ in length from the recovered core are used.

A. 1 B. 2 C. 4 D. 6

True or False: For each statement, circle True or False.

True False 4. The Contractor must submit a detailed report specific to the project prepared by a qualified slurry consultant if they propose to use a mineral slurry.

True False 5. Slurry is sometimes used in the Casing construction method.

True False 6. A soil described as Silty Gravel could contain up to 50% silt.

7. Soil properties that can be identified in the field include:

A. Size, Color, Plasticity B. Size, Color, Hardness C. Texture, Hardness, Plasticity


8. Rock properties that can be identified in the field include:

A. Size, Color, Plasticity B. Color, Hardness C. Texture, Hardness, Plasticity

9. The Engineer has how many calendar days to approve or reject the drilled shaft installation plan after receipt of all submissions?

A. 5 days B. 10 days C. 15 days D. 21 days

10. If the Contractors key personnel change or the Contractor proposes a significant revision of the approved shaft installation plan, what must be done?

A. Continue with work as normal B. Explain to Contractor they have to have only those people described in plan can be there C. Hold an additional meeting with the key people before any more work is done D. Call Project manager and let contractor continue work

11. On a Drill Log, the drilling abbreviation LW represents which of the following?

A. Lost Water B. Low unit weight of material C. Saturated sands D. None of the above

12. On which of the following plan set sheets will you find the Hydraulic Data Table?

A. Foundation Data Sheet B. Bridge Plan and Elevation Sheet C. Footing Plan Sheet D. None of the above

13. What is the circumference of an 8-foot diameter drilled shaft?

__________________________ 14. What volume of concrete can be placed in an 8-foot diameter shaft that is 40 feet deep?

__________________________


Using the Plan Set Handout, Special Provisions and the Geotechnical and Foundation Report for the Calapooya Creek Bridge Replacement, answer the following questions. 15. What length of 8-foot diameter drilled shaft (in feet) is planned for this project?

________________________ 16. What is the design shaft tip elevation of the 8-foot diameter drilled shaft?

________________________ 17. At what depth can the driller expect to encounter the mudstone (Calapooya Unit-5) in

the drilled shaft?

_________________________

18. How many crosshole sonic log (CSL) tubes are required?

__________________________ 19. What length of permanent casing is required for the drilled shaft?

__________________________

True or False: For each statement, circle True or False.

True False 20. The required minimum length for testing mechanical splices for a #8 bar is 72 inches.

True False 21. The estimated quantity of drilled shaft reinforcement for Structure 20861 is 10,000 pounds.


Drilled Shaft Inspectors Training Homework #2

Problem Number 1


Problem Number 2

The plans for a bridge show that the drilled shaft diameter is to be 96 and that all concrete cover is to be 6. The length of the drilled shaft is 50. Determine the total number of side spacers required based on the specification below. Also, draw and dimension the location of the spacings on the shaft below.

00512.45(d) Concrete Cover - Maintain the required concrete cover shown by placing concentric spacer bars or other approved devices around the reinforcing cage. Place spacing devices on minimum 10 foot vertical spacings the full length of the shaft. At each 10 foot level, place spacers on a minimum 30 inch circumferential spacing with at least three spaces per level. Do not use wood spacers or concrete dobies.

50









NO Free Fall # ID Length Volume End Pour: Date: Time:

X Tremie 3 8 inch 20 feet cy Shaft Completion Time:


YES Tremie Plug cy Total Concrete Volume Delivered (TVD)

NO Tremie Cap Total Volume in Lines (VL) cy Total Concrete Volume In Shaft; cy

NO Relief Valve cy(=TVD-VL-VW)


Homework #1 Drilled Shaft 12345 CON10000

1 206+12.22 LT #2 8 feet

Diggin Deep Drilled Shaft Construction Abby Normal 41071 7/22/2013

179.3

REBAR CAGE TOP ELEVATION:241.62 242.8 245.5 246.9

REBAR WITHIN SPEC?30.9 ft 174.9 245.8

7:00 AM

7/22/2013 12:00 PM

12:45 PM

Tremie Depth

Depth To Concrete

NOTES(delays, additives, breaching, casing removal)


Truck No.

Concrete Volume Slump

Arrival Time

Start Time Finish Time

Estimated Waste Concrete (VW) 5

7/22/2013

63.2

2 10 cyd 9.5 8:00 AM 7:20 AM 7:28 AM 66 ft 59.9

1 10 cyd 9.8 6:50 AM 7:10 AM 7:15 AM 66 ft

YES NO

YES NO

734-2597 (11-2011)



NOTES:

CASING REMOVALOD

6.3 ft

N/A

3 10 cyd 10 8:15 AM 7:35 AM 7:45 AM 66 ft 54.1

66 ft 47.2

5 10 cyd 9.6 8:50 AM 8:10 AM 8:15 AM 66 ft

4 10 cyd 9.1 8:45 AM 7:55 AM 8:05 AM

42.2

6 10 cyd 8.7 8:10 AM 8:35 AM 8:45 AM 42 ft 36.8

7 10 cyd 9.9 8:25 AM 9:15 AM 9:25 AM 42 ft 30.1

42 ft 24.6

9 10 cyd 9.6 9:40 AM 10:00 AM 10:15 AM 42 ft

8 10 cyd 8.6 9:10 AM 9:35 AM 9:50 AM

19.1

10 10 cyd 9.2 10:10 AM 10:45 AM 10:50 AM 20 ft 13.6

11 10 cyd 7.9 10:40 AM 11:05 AM 11:15 AM 20 ft 9

10 ft 2.2

13 10 cyd 9.9 11:30 AM 11:50 AM 12:00 PM 10 ft

12 10 cyd 8.1 11:10 AM 11:35 AM 11:40 AM

0

Top Elev. Bot. Elev. Start Finish

Permanent Casing

316.5 289.5 10:35 AM 11:00 AM

YES NO

YES NO

734-2597 (11-2011)




CONCRETING CURVE

0

10

20

30

DRILLED SHAFT CONCRETE VOLUMES

Homework #1 Class Drilled Shaft 12345 CON10000

1 206+12.22 LT #2 8 feet



UR

ED

DE

PTH

(Fee

t)

40

50

60

700 20 40 60 80 100 120 140 160 180 200 220

CONCRETE VOLUME PLACED (cubic yards)

Volume Delivered TVD cy Notes/Comments:

Volume in Lines VL cy

Wastage VW cy

Volume Placed VP cy(= TVD-VL-VW)

Theoretical Volume VT cy((D2/4)(Shaft Length,ft)/27)

OP cy

ME

AS

U

VOLUME CALCULATIONS

0.0Overpour (VP-VT)









NO Free Fall # ID Length Volume End Pour: Date: Time:

YES Tremie 4 6 25 cy Shaft Completion Time:


NO Tremie Plug cy Total Concrete Volume Delivered (TVD)

NO Tremie Cap Total Volume in Lines (VL) cy Total Concrete Volume In Shaft; cy

NO Relief Valve cy(=TVD-VL-VW)

Depth To Concrete

NOTES(delays, additives, breaching, casing removal)Finish Time

Tremie Depth

60.3 Initial QCT concrete test - passes

55.6

2

2 300+00



Homework #2 Extra Drilled Shaft 12345 CON10000

8:00 AM

10:35 AM

11:00 AM

309

REBAR CAGE TOP ELEVATION:

#3 8 feet


N/A

WITHIN SPEC?

310315

15 245

309 309.5

7/18/2013

1 10 CY 9.8 7:50 AM 8:00 AM 8:15 AM 65

Estimated Waste Concrete (VW)

2 10 CY 9.5 8:00 AM 8:20 AM 8:28 AM 65

Truck No.

Concrete Volume

Arrival Time

Start TimeSlump

7/18/2013

YES NO

YES NO

734-2597 (11-2011)



NOTES:

CASING REMOVALOD

N/A

N/A

N/A

Finish

8:50 AM 65 50.9

50 41.5

11:30 AM 40 27.4

3:10 PM

Permanent Casing

Top Elev. Bot. Elev. Start

3 10 CY 10 8:15 AM 8:35 AM

8:55 AM 9:05 AM 65 46.2

5 10 CY 9 8:55 AM 9:10 AM 9:30 AM

4 10 CY 9.1 8:45 AM

9:40 AM 10:10 AM 50 36.86

10:40 AM 10:50 AM 50 32.1

10 CY 8.8 9:05 AM

8 10 CY 10 11:05 AM 11:20 AM

7 10 CY 7.5 10:15 AM

12:20 PM 1:30 PM 30 18

11:40 AM 12:00 PM 40 22.7

11 10 CY 9 1:45 PM

10 10 CY 10 12:05 PM

9 10 CY 10 11:30 AM

12 10 CY 9.5 2:15 PM 2:40 PM

N/A

30 9.16

1:50 PM 2:10 PM 30 13.3

N/AN/A

YES NO

YES NO

734-2597 (11-2011)




CONCRETING CURVE

Where is the top of the concrete?

EXTRA CREDIT: What is the ACTUAL diameter of the shaft?

EXTRA CREDIT: Assuming the same rate of use, how much more concrete will the contractor need to order?

0

10

20

30

Diggin Deep Drilled Shaft Construction Abby Normal 2/3/2013


AS

UR

ED

DE

PTH

(Fee

t)DRILLED SHAFT CONCRETE VOLUMES

Homework #2 Extra Drilled Shaft 12345 CON10000

2 300+00 #3 8 feet

40

50

60

700 20 40 60 80 100 120 140 160 180 200 220

CONCRETE VOLUME PLACED (cubic yards)

Volume Delivered TVD cy Notes/Comments:

Volume in Lines VL cy

Wastage VW 2.0 cy

Volume Placed VP cy(= TVD-VL-VW)

Theoretical Volume VT cy((D2/4)(Shaft Length,ft)/27)

OP cy0.0Overpour (VP-VT)

ME

A

VOLUME CALCULATIONS

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