Michael McKenna P. Mary Jean Pajak P. Samuel Wilson P. The Structural Engineering exam is not offered outside North America. Florida Requirements and Registration Details Which exam are you taking? Exam registration and authorization The Florida engineering board does not require examinees to submit an application prior to registering with NCEES and scheduling an FE exam. Members: Dylan Albergo P. Scott Drury P. Kevin Fleming P. Jeb Mulock P. Yassi Myers P. John Pistorino P. Denise Ramsey P.
Pankaj Shah P. Babu Varghese P. Georgia Requirements and Registration Details Which exam are you taking? Exam registration and authorization The Georgia board does not require FE examinees to submit an application or an additional fee prior to registering with NCEES and scheduling an exam. First-time applicants.
Lawrence "Dan" Davis P. Russell "Russ" Pennington P. Elmo Richardson Jr P. Darien Sykes P. William Womack P. Taylor Wright P. Neil Wyche P. Guam Requirements and Registration Details Which exam are you taking?
Examinees must first apply to the Guam board for approval to sit for the exam. After the board has notified you of your approval, register online with NCEES see deadline below to reserve your seat for the exam. Masoud Teimoury Ph. Hawaii Requirements and Registration Details Which exam are you taking?
Examinees must first apply to the Hawaii board for approval to sit for the exam in Hawaii. Applications must be filed no later than ninety calendar days prior to the date of the exam. Exam registration and authorization The Hawaii board does not require FE examinees to submit an application or an additional fee prior to registering with NCEES and scheduling an exam. Alan Inaba P. Jay Ishibashi Ron Iwamoto P. Kevin Katayama P. Richard "Rick" Suzuki P. Marc Ventura Roberto Yumol. Idaho Requirements and Registration Details Which exam are you taking?
Exam registration and authorization The Idaho board does not require FE examinees to submit an application or an additional fee prior to registering with NCEES and scheduling an exam.
Members: Glenn Bennett P. Keith Brooks P. Richard Jacobson P. George Murgel Ph. Tom Ruby P. John Tomkinson Raymond Watkins P. Illinois Requirements and Registration Details Which exam are you taking? Members: Brian Berg Jr P. Christy Crites P. Gale Jamison P. Philip Kunz Sean Middleton P. Richard Ray P. James Schlichting P. John Whitt P. Duane Yockey P. Members: David Bibbs P. Steven Bishop S. David Carroll P. Salvatore Di Bernardo P. Christine Freisinger P. Chad Hodel P. Indiana Requirements and Registration Details Which exam are you taking?
Exam registration and authorization The Indiana board does not require examinees to submit an application or an additional fee prior to registering with NCEES and scheduling an exam. Members: Jason Durr P. Stephen Gillman P. Tim Jensen P. Opal Kuhl P. Greg Morical Sam Reed P.
Susan Zellers P. Iowa Requirements and Registration Details Which exam are you taking? After doing so, all IA PE exam applicants must attest to the following 5 statements before they can proceed with the registering for and scheduling an exam: 1. All exam applicants should contact the the Iowa board for instructions on obtaining approval.
Iowa accepts applications year round, and once approved any applicant can register for an upcoming exam. Exam registration and authorization The Iowa board does not require FE examinees to submit an application or an additional fee prior to registering with NCEES and scheduling an exam. Members: Todde Folkerts P. Paul Herold P. Lisa VanDenBerg P. Examinees should contact JPEC directly for details. Kansas Requirements and Registration Details Which exam are you taking?
Note: Approval applications are required beginning February 16, Exam registration and authorization The Kansas board does not require FE examinees to submit an application or an additional fee prior to registering with NCEES and scheduling an exam. Members: Larry "Larry" Graham P.
William Haverkamp P. Joseph Johnson Brenee King Ph. Kimberly Kramer P. John Lilak P. Jennifer Taylor P. Eric Wimmer. Kentucky Requirements and Registration Details Which exam are you taking?
However, you must acknowledge the following statement:. The Kentucky board does not require examinees to submit an application or an additional fee prior to registering with NCEES deadline: p.
You must also acknowledge the following statement: "I am a graduate of an EAC ABET-accredited engineering program and have passed the Fundamentals of Engineering examination; or I have written approval from the Kentucky Board to register for this examination.
All examinees should visit the ABET website at www. Verification of passage of the FE exam submitted directly from the state where you passed the exam. The Kentucky board does not require examinees to submit an application or an additional fee prior to registering with NCEES and scheduling an exam.
However, you must acknowledge the following statement: "I have reviewed and meet the Kentucky education requirements listed on their website; or I have written approval from the Kentucky Board to register for this examination. All others should contact Kyle. Elliott ky. You must also acknowledge the following statement: "I have reviewed and meet the Kentucky education requirements listed on their website and have passed the Fundamentals of Surveying examination; or I have written approval from the Kentucky Board to register for this examination.
Exam registration and authorization The Kentucky board does not require examinees to submit an application or an additional fee prior to registering with NCEES and scheduling an exam. Members: Rudolph Buchheit Ph. Joshua Calico P. Emmanuel Collins Ph. Nicole Galavotti P. Christopher Gephart P. Ryan Griffith P. Gregory Meredith P. Joseph Pyles P. Louisiana Requirements and Registration Details Which exam are you taking?
Exam registration and authorization The Louisiana board does not require FE examinees to submit an application or an additional fee prior to registering with NCEES and scheduling an exam. Members: Edgar Benoit P. Linda Bergeron P. Constance Betts P. James Chustz P. Wilfred Fontenot P. Reginald Jeter P. Jeffrey "Jeff" Pike P. Byron Racca P. Christopher Richard P. Chad Vosburg P.
Janice Williams P. Maine Requirements and Registration Details Which exam are you taking? Examinees must first apply to the Maine board for approval to sit for the exam. Exam registration and authorization The Maine board does not require examinees to submit an application or an additional fee prior to registering with NCEES and scheduling an exam. Members: Brent Bridges P. Mandy Holway P. Judith Pearse P. Joyce Taylor P. Maryland Requirements and Registration Details Which exam are you taking?
If you have questions about the process, email the board: peeitexam dllr. Exam registration and authorization The Maryland board does not require examinees to submit an application or an additional fee prior to registering with NCEES and scheduling an exam. Members: Steven Arndt Ph. Pastor Farinas P. David Mongan P. Sallye Perrin P. Exam registration and authorization The Connecticut board does not require examinees to submit an application or an additional fee prior to registering with NCEES and scheduling an exam.
After the board has notified you of your approval, register online with NCEES to reserve your seat for the exam. The application deadline to the board will be July 1, for the October exams. Members: Anthony D'Andrea P. John Dewolf Ph. Robert Doane Jr P. Robert Lewandowski Kenneth Peterson L. Raymond "Ray" Redniss P. Al Regina Curtiss Smith L. Richard Szewczak P. Delaware Requirements and Registration Details Which exam are you taking? To be approved for the PE exam through the Delaware board , you must have completed one of the two options below: 1.
To be approved for the SE exam through the Delaware board , you must have completed one of the two options below:. Members: Daniel Barbato P. Neeraj Batta P. Michael Clendaniel P. Nicholas Dean P.
William Gamgort Jason Hastings P. Jeremy Kalmbacher P. Karen Maxson P. Charles McAllister P. David Reinhold P. Michael "Mike" Siwek P. Ronald Smith Kenneth Tadler P. Robert Wheatley. Exam registration and authorization The Washington, D. District of Columbia Board of Professional Engineering. Michael McKenna P. Mary Jean Pajak P. Samuel Wilson P. The Structural Engineering exam is not offered outside North America. Florida Requirements and Registration Details Which exam are you taking?
Exam registration and authorization The Florida engineering board does not require examinees to submit an application prior to registering with NCEES and scheduling an FE exam. Members: Dylan Albergo P. Scott Drury P. Kevin Fleming P. Jeb Mulock P. Yassi Myers P. John Pistorino P. Denise Ramsey P. Pankaj Shah P. Babu Varghese P. Georgia Requirements and Registration Details Which exam are you taking? Exam registration and authorization The Georgia board does not require FE examinees to submit an application or an additional fee prior to registering with NCEES and scheduling an exam.
First-time applicants. Lawrence "Dan" Davis P. Russell "Russ" Pennington P. Elmo Richardson Jr P. Darien Sykes P. William Womack P. Taylor Wright P. Neil Wyche P. Guam Requirements and Registration Details Which exam are you taking?
Examinees must first apply to the Guam board for approval to sit for the exam. After the board has notified you of your approval, register online with NCEES see deadline below to reserve your seat for the exam. Masoud Teimoury Ph. Hawaii Requirements and Registration Details Which exam are you taking?
Examinees must first apply to the Hawaii board for approval to sit for the exam in Hawaii. Applications must be filed no later than ninety calendar days prior to the date of the exam. Exam registration and authorization The Hawaii board does not require FE examinees to submit an application or an additional fee prior to registering with NCEES and scheduling an exam. Alan Inaba P. Jay Ishibashi Ron Iwamoto P. Kevin Katayama P. Richard "Rick" Suzuki P. Marc Ventura Roberto Yumol. Idaho Requirements and Registration Details Which exam are you taking?
Exam registration and authorization The Idaho board does not require FE examinees to submit an application or an additional fee prior to registering with NCEES and scheduling an exam. Members: Glenn Bennett P. Keith Brooks P. Richard Jacobson P. George Murgel Ph. Tom Ruby P. John Tomkinson Raymond Watkins P. Illinois Requirements and Registration Details Which exam are you taking?
Members: Brian Berg Jr P. Christy Crites P. Gale Jamison P. Philip Kunz Sean Middleton P. Richard Ray P. James Schlichting P. John Whitt P. Duane Yockey P. Members: David Bibbs P. Steven Bishop S. David Carroll P. Salvatore Di Bernardo P. Christine Freisinger P. Chad Hodel P. Indiana Requirements and Registration Details Which exam are you taking?
Exam registration and authorization The Indiana board does not require examinees to submit an application or an additional fee prior to registering with NCEES and scheduling an exam. Members: Jason Durr P. Stephen Gillman P. Tim Jensen P. Opal Kuhl P. Greg Morical Sam Reed P. Susan Zellers P. Iowa Requirements and Registration Details Which exam are you taking? After doing so, all IA PE exam applicants must attest to the following 5 statements before they can proceed with the registering for and scheduling an exam: 1.
All exam applicants should contact the the Iowa board for instructions on obtaining approval. Iowa accepts applications year round, and once approved any applicant can register for an upcoming exam. Exam registration and authorization The Iowa board does not require FE examinees to submit an application or an additional fee prior to registering with NCEES and scheduling an exam.
Members: Todde Folkerts P. Paul Herold P. Lisa VanDenBerg P. Examinees should contact JPEC directly for details. Kansas Requirements and Registration Details Which exam are you taking?
Note: Approval applications are required beginning February 16, Exam registration and authorization The Kansas board does not require FE examinees to submit an application or an additional fee prior to registering with NCEES and scheduling an exam. Members: Larry "Larry" Graham P.
William Haverkamp P. Joseph Johnson Brenee King Ph. Kimberly Kramer P. John Lilak P. Jennifer Taylor P. Eric Wimmer. Kentucky Requirements and Registration Details Which exam are you taking? However, you must acknowledge the following statement:. The Kentucky board does not require examinees to submit an application or an additional fee prior to registering with NCEES deadline: p. You must also acknowledge the following statement: "I am a graduate of an EAC ABET-accredited engineering program and have passed the Fundamentals of Engineering examination; or I have written approval from the Kentucky Board to register for this examination.
All examinees should visit the ABET website at www. Verification of passage of the FE exam submitted directly from the state where you passed the exam.
The Kentucky board does not require examinees to submit an application or an additional fee prior to registering with NCEES and scheduling an exam. However, you must acknowledge the following statement: "I have reviewed and meet the Kentucky education requirements listed on their website; or I have written approval from the Kentucky Board to register for this examination.
All others should contact Kyle. Elliott ky. You must also acknowledge the following statement: "I have reviewed and meet the Kentucky education requirements listed on their website and have passed the Fundamentals of Surveying examination; or I have written approval from the Kentucky Board to register for this examination.
Exam registration and authorization The Kentucky board does not require examinees to submit an application or an additional fee prior to registering with NCEES and scheduling an exam. Members: Rudolph Buchheit Ph.
Joshua Calico P. Emmanuel Collins Ph. Nicole Galavotti P. Christopher Gephart P. Ryan Griffith P. Gregory Meredith P. Joseph Pyles P. Depths up to 35ft using a 60 in. Soil stabilization and trenchless installation were the economical, efficient choice when a failing line over a peat and marl zone required emergency replacement.
Akkerman Case Study. Our Member Companies. At NCPI, we are united by a common goal and passion for expertise in design, research, education and leadership. Visit Frequently Asked Questions. Contact one of our member companies for assistance. Reduce SSOs through aggressive cleaning! Clay pipe has been used in sewers for over 6, years, starting in Ephesus, in what is now Turkey. NCPI has been a research institute for over years. It was the first pipe material group to establish standards with ASTM.
Five of the six largest U. All rights reserved. The Moisture Ad- justment table on sheet 2 is used to adjust the mix proportioning for aggregate water. The dry-weight proportions from the mix design are entered into column 2. The aggregate absorption is entered in column 3. Compute the SSD weight of the aggregates using the formula shown in footnote 1 below the Moisture Adjustment table. Determine the aggregate moisture at the time of batching and record this number in Column 5.
The calcium carbide gas pressure tester ASTM D may be used to determine aggregate moisture, but may not give an accurate reading of the total moisture as it may not measure the total amount of absorbed moisture.
Compute and record in column 6 the wet weight of the aggregates using the formula given in footnote 2. Subtract the values in column 4 from the values in column 6 and enter this value in column 7. The values in column 7 are the values for free water on the aggregates that will be free to contribute to the paste.
Total these values to arrive at the total amount of free water on the aggregates. In column 8, record the cement and pozzolan weights from column 1 and the aggregate wet weights from column 6.
Subtract the total of the free water in column 7 from the weight of water in column 1 and include this in column 8. Copy the values from column 8 of the Moisture Adjustment table into column 2 of the Trial Mix table on sheet 3.
Batch the cement, pozzolan, and the aggregates by weighing out the amounts listed in column 2. Measure the admixtures and include them in the container of water when weighing the water unless batching them together is prohibited by the manufacturer.
Note: Some admixtures do not mix well with others or have restrictions on when they can be introduced into the mixture. Record the amount of each admixture in column 2, indicating in column 1 if the admixture was measured in ounces or millili- ters. Sample and measure the slump and the air content. These are listed in the first column of the Trial Mix on the line for recording air test results.
Circle the applicable test or line through the test that is not used. If these values are acceptable, additional trial batches are not needed. Record information about cylinders at the bottom of sheet 4. Compute the yield Y of the mix using the formula at the bottom of sheet 3. If the slump and air content are not acceptable, make another batch with adjusted proportions as shown in the column 3. Continue batching and testing until the slump and air content are acceptable, then determine and record the density, make cylinders, and compute the yield.
Convert the mix values of cement, pozzolan, and the aggregates to SSD Batch Weight as described in the notes on sheet 3 and record these values in column 5.
Compute and record the free water in column 6 as described in the notes on sheet 3. Total the free water values and add the total to the weight of water in the final trial batch. Record this value in column 5. Also, record in column 5, the amount of admixtures and the test results for slump, air con- tent, and density.
Copy the proportions from Trial Mix table, column 5 into column 2 of the Mix Proportions table on sheet 4. Con- vert the values to pounds per cubic yard as explained in the note below the Mix Proportions table and record the pounds per cubic yard batch weights in column 3. Compute the absolute volume of each ingredient in cubic feet per cubic yard as explained below the Mix Proportions table and record in column 4.
Total these values to deter- mine the total absolute volume of the mix air-free in cubic feet per cubic yard. Under the Gravimetric Air Content heading, compute the theoretical density of the mix T and compute the gravi- metric air content A.
This value can be compared against the measured air content. The values should be similar but will vary due to several factors.
These include values of relative density, absorption, and aggregate moisture that are generally only close to the true value. Other factors causing the gravimetric air content value to differ from tested values are measurement inaccuracies, round-off errors, and errors introduced by test imprecision. Final acceptance of the mix can only come after the day compressive strength is determined or if the engineer judges the mix acceptable based on strength tests of concrete specimens that are less than 28 days old.
Class FFly Ash Pozzolan 2. Fine C33 Natural Sand Aggregate 2. Water Columbia Falls City Water 1. For aggregates, RD is the relative density of the ingredient in the dry condition. RDSSD is computed as follows:. In Column 7 , insert the difference between the values in Column 6 and the values in Column 4. Trial 1 Trail 2 Trail 3 Weight of SSD batch batch batch batch aggregate Materials weight weight weight weight free water lb lb lb lb lb. Cement For Columns 2 , 3 , and 4 , begin by proportion Trial 1 with the same proportions as those listed in Column 8 of the Moisture Adjustment Table.
After testing for slump and air, adjust proportions and make additional trial batches until the desired slump and air content are attained. When desired slump and air content are attained, determine the mix density D and make compressive strength specimens. Enter the cement and pozzolan weights in Column 5. Enter these values in Column 5 along with the amount of admixtures used in the mix and the test results for slump, air, and density.
Subtract the aggregates SSD weight from their batch weights to determine the weight of aggregate free water. Enter these values in Column 6 , sum them and enter their sum in Column 6 also. Compute batch yield Y. Entered converted values in column 3. Enter converted values in Column 3. Compute and enter in Column 4 the absolute volume of the mix ingredients.
Gravimetric Air Content To compute the gravimetric air content first compute the theoretical density. Theoretical density T is computed by dividing the total of the Column 3 weights by the total of the Column 4 volumes.
Job name Location. Structure Mix design no. By Title Date. Water 1. Job name Mix design no. Method of curing Method of capping Name of testing laboratory:. Report no. Site Structure Specimens: number Type of speciments: cylinder beans cores in diameter Concrete class Mix no.
Batch volume yd3 Type mix: job ready mix Location in structure Date placed Date extracted cores Date shipped Prepared by. Field Data Batch scale Materials Additional description weight lb. Ready-mix plant Load ticket no. Method of curing Method of capping Name of testing laboratory. Aggregate moisture should be monitored and documented at least once each production shift and whenever a change in the moisture is suspected.
On WS Always note observations such as this in the comments section. When sampling aggregate, note the time when sampling is begun and the time when sampling ceases. This will allow correlation with the plant record pertaining to the mix produced from the aggregates sampled.
Obtain several samples. Record all test results and strike through any values that are unreasonable or markedly different from other results of tests from the same set of samples. Average the test results from the remaining values in each set of samples.
Watershed Pine Creek Site No. Spillway Report No. Speedy moisture meter appears to be measuring free water only. A calibration curve will be developed for the Speedy. Watershed Site No. Structure Report No. The inspector must ensure that the mix being produced in the field conforms to the approved Job Mix. The Field Mix Evaluation uses information obtained from the Job Mix submittal and plant records to evaluate the mix being produced in the field field mix.
Enter the applicable units pounds or tons in the space provided in the top left corner of the table. Use the units reported by the plant. The values in the example are in tons. Line 1 Record the quantities of each mix ingredient on line 1, columns 1 through 7 and column 9. The sum of the fig- ures in columns 1 through 7 is computed and placed in column 8.
In the example, the quantities are summed as follows: Column 9 Column 9 contains information about the admixture. The example shows ounces of admixture were added to the mix. If the plant record does not include the admixture in the quantity of water added to the mix, add the quantity of admixture to the quantity of water reported by the plant and place this sum in line 1, column 5.
Line 2, columns 1 through 4 The value for aggregate field moisture is obtained from the Record of Aggregate Moisture and placed in line 2, columns 1 through 4. For coarse aggregate 1 CA 1 the value of 2. Line 3, columns 1 through 4 Use the field moisture from line 2 to compute the weight of dry aggregate.
For example, the Dry Quantity of CA 1 is computed as follows: For CA 1, the aggregate moisture is computed as follows: The sum of the aggregate moisture is entered in line 2, column 5. Line 4, columns 1 through 4 Some of the moisture in the mix is absorbed by the aggregates. Spec 36 requires aggregate absorption to be reported on the Job Mix submittal for each aggregate used in the mix. Obtain the absorption from the Job Mix submittal and record the values for each aggregate in line 4, columns 1 through 4, as applicable.
In the example, in line 4, column 1, 2. Line 5, columns 1 through 4 The saturated surface-dry SSD quantity is the weight of the aggregates plus the moisture absorbed into the aggregates.
Compute the SSD quantity for each aggregate using the value for absorption from line 4. Line 4, column 5 The amount of moisture absorbed by each aggregate is computed by subtracting the dry quantity in line 3, col- umns 1 through 4 from the SSD quantity in line 5, columns 1 through 4.
For example, the amount of moisture absorbed by CA 1 is computed as follows:. In the example, the free water is computed as follows:. Line 5 Copy the quantities of cement and pozzolan from line 1, columns 6 and 7 to line 5, columns 6 and 7. The sum of the values on line 5, columns 1 through 7 equals the total weight of the mix as follows:.
This value is placed on line 5, column 8 and must equal the previous total located on line 1, column 8. If these values are not equal, a computation error has occurred that must be corrected before proceeding. Line 6, columns 1 through 7 Line 6 contains the quantity of each ingredient as a percentage of the total mix quantity.
The values in line 6, columns 1 through 7 are computed by dividing the values in line 5 by the total quantity of the mix on line 5, column 8 and multiplying by Line 7, column 9 Record the quantity of admixture specified in the Job Mix on line 7, column 9. This value may be shown on the Job Mix in ounces or milliliters per cubic yard of mix.
If so, it must be multiplied by the number of cubic yards in the batch being evaluated to convert to ounces or milliliters per batch. Line 8 Compute and record the percent difference between the values in lines 6 and 7.
For example, line 6, column 1 shows The Job Mix specified that The values in line 8 must be within these specified tolerances; otherwise, mix proportioning adjustments must be made so that the mix being produced in the field is proportioned within the specified tolerances.
Line 10 Copy the quantities from line 5 to line The values in line 10 must be in pounds. Make the conversion, if ap- plicable. For example, the quantity of CA 1 on line 5 is The value recorded on line 10, column 1 is computed as follows:. Line 11 Obtain from the Job Mix the SSD relative density of each of the ingredients, and record them on line 11, columns 1 through 7. Note: Relative density is the ratio of the weight of a specific absolute volume of mate- rial to the weight of an equal volume of distilled water.
The aggregate relative densities recorded here are for aggregates in the saturated surface dry SSD condition. If the relative density listed on the Job Mix submittal has not been adjusted for SSD, make the adjustment. For example, if the relative density of CA 1 in the dry condition is 2. Line 12 Compute and record the absolute volume of each mix ingredient on line 12, columns 1 through 7. The absolute volume computation is made by dividing the values in line 10, columns 1 through 7 by the product of values in line 11, columns 1 through 7 and the unit weight of water.
TAFD is computed by dividing the total weight of all ingredients in the mix by the absolute volume of all ingre- dients in the mix as follows:. Department of Agriculture. An AMD determination must be made for each gauge employed for the purpose of documenting compliance with density specifications. The three-step process of determining the AMD should be recorded on the work- sheet. Refer to NEH Rangel Placement No. Step 2: Verify that density varies no more than 2 percent from bottom to top of the inch lift.
Step 3: Compute the AMD. Structure Date Inspector Placement No. Step 1: Compact and test two passes beyond the point density ceases to increase. The worksheet is also used to document moisture and density test results, the location of the tests in- cluding lift elevation, and the compactor used to compact the lift being tested. Draw a sketch in the space provided above the table. RCC placement began over A at a. RCC compaction was completed over A by a.
Information to be recorded in the table includes details about the lift and RCC compaction. Spec 36 requires the RCC surface temperature to be measured each hour the lift surface is exposed. The time of joint exposure TE and the average temperature of the surface AST are recorded for each area. The product of these values equals the joint maturity. Two hours was recorded for the TE for area A. Spec 36 defines three joint conditions fresh joint, intermediate joint, and cold joint.
One of three treatment methods defined in Spec 36 treatment methods I, II, or III is typically chosen by the design engineer based on the joint condition. Note: Unless otherwise noted, it is normal convention for the left side of the structure to be on the left when facing down- stream in the direction of ascending station numbers. A density of Include, in the comment section, any problems or relevant issues, such as a description of any repairs, which warrant additional explanation.
Production ceased for the day. Problem was with a leaky valve dumping too much water into Joint Condition fresh fresh fresh fresh intermediate the mix. Problem was fixed. Production resumed on Construction joint and lift joint Test No. Placement No. Weather Temp to Mix Temp to. Compactor Station Offset ft Gauge No. WS Even though some information will be duplicated by using both the RCC Lift Summary and In-place Density and Moisture Test Results worksheets, a more comprehensive set of data will be provided by completing both forms.
The test location can be identified by x, y, z—coordinates or by station, offset, and elevation. The stations given in the example entries refer to the centerline station of the RCC structure.
The offset e. Note: Unless otherwise noted it is normal convention for the left side of the structure to be on the left when facing down- stream in the direction of ascending station numbers. The elevation given for the test location is the eleva- tion of the surface upon which the nuclear gauge sits to make the test. All nuclear gauges are identified by a number and this number should be recorded to document which gauge was used to run the test.
The nuclear gauge probe is lowered into the RCC and locked at a specific depth to run the test. This depth must be recorded. Gauge number measured the wet density of the RCC to be The moisture was measured to be 5.
The first line also documents that the density of the inch lift was attained with 10 passes of the Hamm compactor compactor B. Furthermore, a foot note was provided that directs the reader to the Comments section of the worksheet, where it is noted that a switch was made to compactor A.
Always list corrective actions in the comment area provided at the bottom of the page and document prob- lems and corrective actions in the job diary as appropriate. Sheet No. Lift Thickness.
Corrective Gauge No. Test Location Moisture. Tested Station Offset Elev. Comments: I. Switched to Compactor A 2. Thinned lift from 12 to 6 inches when using Compactor B 3.
Measurements taken in same holes with different gauges to compare gauges. Density is relatively close, but moisture varies quite a bit between gauges. Moisture correction dialed into Gauge , but no correction dialed into Gauge Will determine moisture correction for Gauge prior to further use. Corrective Compactor Gauge No. Moisture Test Location. The example shows the results from three groups of specimens. Groups 11 and 12 each contained 12 cylinders.
Two cylinders from each group were tested and are reported in the example. Results from two of the four cores are reported in the example.
The cylinders were weighed immediately after being made to obtain their wet weight. The ends of the cores were sawed and weighed at the time of testing. Specimen volumes were determined at the time of compression strength testing. RCC cylinders generally have a slightly larger diameter than conventional concrete test specimens because compaction results in expansion of the plastic specimen mold.
Thus, the volume will be slightly higher than the volume of the empty mold. The diameter of core specimens can also vary.
The diameter used to compute the volume of core or molded cylinder specimens should be the average of the bottom, middle, and top diameters.
The diameter of specimen number 1 from group 11 was measured near the bottom, middle, and top to be 6. The average diameter is com- puted as follows:. The volume of the specimen is computed as follows: The density of speci- men number 1 from group 11 is computed as follows: Accurate compression testing requires the load placed on the specimen to be evenly distributed across the top and bottom of the specimen. Since the top and bottom of specimens are rarely smooth, they are capped with sulfur which is bonded to the top and bottom of the specimen or capped with a high density rubber which is not bonded to the specimen.
The type of caps used, bonded or unbonded, should be reported. Correction factors taken from C39 and C42 are as follows:. The correction factor for this specimen is between 0. The following relationship can be employed to compute the correction factor: 1. The compressive strength of specimen number 1 from group 3 tested to be 1, pounds per square inch. ASTM C39 requires compressive strength be reported to the nearest 10 pounds per square inch. Thus, in the ex- ample, the corrected compressive strength of specimen number 1 from group 3 was reported as 1, pounds per square inch.
ASTM C39 contains a schematic of six fracture patterns type 1 through type 6. The number corresponding to the type of fracture should be documented. Also, note the presence of large air voids, evidence of segregation, whether fractures pass predominantly around or through coarse aggregate particles, and any other observa- tions related to strength values attained. A comment was made in the comments section of the worksheet explaining that poor compaction was indicated by gravel with little paste at an approximated depth of 8 inches.
The comment infers the low strength was a result of poor compaction. Spec 36 requires that three cylinders or two cores be tested for compressive strength at each age specified. The average of three cylinders or two cores made from the same mix and tested on the same day represents. If one compression test value is significantly lower than that of the other specimen s , only the higher values should be used to determine the average density.
If the cause of the low strength value can be determined, it should be noted as mentioned above for specimen number 12 from group The strength of this specimen was recorded and then lined through to denote that it was not used to com- pute the average strength.
Their compressive strengths are averaged as follows:. Cylinders were weighed at the time of molding. Cores were weighed at the time of testing. Open navigation menu. Close suggestions Search Search. User Settings. Skip carousel. Carousel Previous. Carousel Next. What is Scribd? Explore Ebooks. Bestsellers Editors' Picks All Ebooks. Explore Audiobooks. Bestsellers Editors' Picks All audiobooks. Explore Magazines. Editors' Picks All magazines. Explore Podcasts All podcasts.
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