|
SAMPLE PLAN NOTES FOR CAPITAL PROJECTS
ROADWAY GENERAL NOTES
Note #DC-RD001
EXCAVATION AND EMBANKMENT CONSTRUCTION
EXCAVATED SOILS ON THE PROJECT SITE MAY NOT BE SUITABLE FOR EMBANKMENT USE. THE
CONTRACTOR SHALL BE RESPONSIBLE FOR ENSURING THAT ANY ON-SITE SOIL USED AS
EMBANKMENT MEETS THE REQUIREMENTS OF 203.
ITEM 203, EXCAVATION, INCLUDES WASTING ANY EXCAVATED MATERIAL WITHIN THE
RIGHT-OF-WAY WITH THE APPROVAL OF THE ENGINEER OR OUTSIDE THE RIGHT-OF-WAY AT
THE CONTRACTOR'S EXPENSE, IF NO SUITABLE AREAS EXIST FOR WASTING WITHIN THE
RIGHT-OF-WAY.
ITEM 203, EMBANKMENT INCLUDES CONSTRUCTING EMBANKMENTS TO PLAN LINES AND
INCLUDES FURNISHING AND PLACING SUITABLE BORROW MATERIAL AS SPECIFIED IN 203,
WHEN REQUIRED. FOR SOIL BORROW OR OTHER MATERIALS NOT ALREADY CERTIFIED TO MEET
203 REQUIREMENTS, THE CONTRACTOR SHALL ALLOW THE ENGINEER 10 DAYS TO PERFORM IN
SITU TESTS PRIOR TO USING THE MATERIAL.
PRIOR TO EARTH DISTURBING ACTIVITIES, INSTALL ALL REQUIRED EROSION CONTROL ITEMS
AS SPECIFIED ON THE STORMWATER POLLUTION PREVENTION PLAN PREPARED BY THE
CONTRACTOR. FOR EARTH DISTURBING WORK OUTSIDE THE WORK LIMITS, THE CONTRACTOR
SHALL BE SOLELY RESPONSIBLE FOR ACQUIRING ALL NECESSARY PERMITS, IF REQUIRED,
INCLUDING FOR BORROW AREAS. PROVIDE THE APPROPRIATE EROSION CONTROL MEASURES AS
REQUIRED.
Designer Note:
Use this note on all projects with earthwork.
Note #DC-RD002
UNSUITABLE SUBGRADE SOILS
IF UNSUITABLE SUBGRADE SOILS ARE ENCOUNTERED IN THE AREAS OF THE PROPOSED
ROADBED, REMOVE AND REPLACE WITH SUITABLE MATERIAL MEETING THE REQUIREMENTS OF
203.02.R., OR WHEN REQUIRED BY THE ENGINEER, USE GRANULAR MATERIAL MEETING THE
SPECIFICATIONS OF 703.16.C TYPE B GRANULAR MATERIAL (304, 411 OR 617 MATERIALS
WITH 0 TO 20 PERCENT PASSING THE NO. 200 SIEVE). THE LIMITS OF THE MATERIAL TO
BE REMOVED AND REPLACED SHALL BE AS DETERMINED BY THE ENGINEER.
PRIOR TO PLACING FILL, THE CONTRACTOR SHALL CROSS SECTION THE EXCAVATED AREAS
AND DETERMINE THE VOLUME. THIS AREA CALCULATION SHALL BE APPROVED BY THE
ENGINEER PRIOR TO CONSTRUCTING EMBANKMENTS. MEASUREMENT SHALL BE MADE USING THE
AVERAGE END AREA METHOD. IN SMALL OR IRREGULARLY SHAPED AREAS, MEASUREMENT MAY
BE MADE BY WEIGHT WHEN APPROVED BY THE ENGINEER.
THE FOLLOWING QUANTITIES ARE PROVIDED FOR USE AS DIRECTED BY THE ENGINEER FOR
USE IN THE WORK NOTED ABOVE:
ITEM 204, EXCAVATION OF SUBGRADE _____ CU.YD.
ITEM 204, EMBANKMENT _____ CU.YD.
ITEM 204, GRANULAR MATERIAL, TYPE B _____ CU.YD.
ITEM 204, GEOTEXTILE FABRIC, TYPE D _____ SQ.YD.
ITEM SPECIAL, GEOGRID _____ SQ.YD.
Designer Note:
Use this note on all projects with earthwork that may require removal of
unsuitable subgrade materials. For estimating purposes, use the following
calculations to determine the required contingency quantities:
204, Excavation of Subgrade
For pavement widening sections, assume 25% of plan area of pavement widening
times an average depth of 1.5 feet. This item is intended for undercutting of
pavement or shoulder sections where existing soils are poorly drained or not
otherwise suitable for subgrade.
204, Embankment
Provide 50% of the calculated quantity of 204, Excavation of Subgrade. This item
is intended for areas where soil or other non granular materials can be placed
and compacted with large compaction equipment to required 203 compaction levels.
204, Granular Material, Type B
Provide 50% of the calculated quantity of 204, Excavation of Subgrade. This item
is intended for areas which are inaccessible to large compaction equipment or in
areas where groundwater may be a problem. This item is also used over Geogrid
where there are very soft subgrade soils and additional undercutting is deemed
not feasible by the construction engineer.
204, Geotextile Fabric, Type D
Provide 25% of the plan area used to calculate 204, Excavation of Subgrade. This
item is intended for areas which have very soft or wet subgrade soils and
additional undercutting is deemed not feasible by the construction engineer.
Special, Geogrid
Provide 75% of the plan area used to calculate 204, Excavation of Subgrade.
Note #DC-RD003
ITEM SPECIAL-GEOGRID
PROVIDE BIAXIAL GEOGRID REINFORCEMENT MATERIAL AS DIRECTED BY THE ENGINEER AT
LOCATIONS SPECIFIED. THIS ITEM IS INTENDED FOR STRENGTHENING WEAK OR POORLY
DRAINED EXISTING SOILS UNDER PLANNED EMBANKMENTS OR SUBGRADE.
GEOGRIDS SHALL NOT BE PLACED ON SOILS WHICH ARE EXPOSED TO LIME OR OTHER
CHEMICALS. GEOGRIDS SHALL BE COVERED WITH A MINIMUM OF 6" OF 304, 411 OR 617
MATERIALS UNLESS DIRECTED OTHERWISE BY THE ENGINEER. FOLLOW MANUFACTURER'S
RECOMMENDATIONS FOR THE INSTALLATION OF THE MATERIAL.
MATERIAL SHALL MANUFACTURED FROM POLYETHELENE, POLYPROPOLENE, OR POLYESTER, AND
MEETING THE FOLLOWING PROPERTIES:
MINIMUM APERTURE DIMENSIONS - 0.50 IN. X 0.50 IN.
MAXIMUM APERTURE AREA - 1.25 SQ. IN.
PERCENT OPEN AREA - 50% TO 85%
MASS PER UNIT AREA - 6.0 TO 15.0 OZ. / SQ.YD. (ASTM D 5261)
MINIMUM ULTIMATE TENSILE STRENGTH (T ULT) - 2000 X 1300 LB. / FT. (ASTM D 6637)
MINIMUM TENSILE STRENGTH AT 2% STRAIN - 600 X 400 LB. / FT. (ASTM D 6637)
REDUCTION IN REQUIRED ULTIMATE STRENGTH AFTER 500 HOURS UV EXPOSURE - NONE (ASTM
D 4355)
PAYMENT SHALL BE BASED ON THE NUMBER OF SQUARE YARDS OF PLAN AREA COVERED BY
GEOGRID NOT INCLUDING OVERLAPS REQUIRED BY THE MANUFACTURER.
Designer Note:
Use this note only with note #DC-R002 where a contingency quantity for Geogrid
is provided. This item is intended for areas which have very soft subgrade soils
and additional undercutting is deemed not feasible by the construction engineer.
204, Granular Embankment (crushed stone) must be used in the first 6” over top
of the geogrid to create the aggregate locking mechanism in the geogrid
apertures. It is generally not advisable to install soil or other natural
materials between this layer and the pavement section for compaction and
settlement reasons.
Note #DC-RD004
USE OF RECYCLED ASPHALT CONCRETE PAVEMENT (RACP) AS EMBANKMENT
DO NOT USE RECYCLED MATERIAL OR RACP AS EMBANKMENT WITHIN 3 FEET OF THE ROAD
SUBGRADE OR FINISHED SHOULDER GRADE. IF RACP IS USED OUTSIDE THESE LIMITS, THE
MATERIAL SHALL BE BLENDED WITH A MINIMUM OF 30% NATURAL SOILS OR GRANULAR
MATERIAL AS SPECIFIED IN 703.16.
Designer Note:
The note is required for all projects that have embankment construction.
EROSION CONTROL GENERAL NOTES
Note #DC-EC001
SITE PREPARATION FOR SEEDING AND MULCHING
IN ADDITION TO THE REQUIREMENTS OF 659.10, IN MAINTAINED LAWN AREAS REMOVE ALL
STONES LARGER THAN 1/2-INCH BY RAKING OR OTHER METHODS APPROVED BY THE ENGINEER.
IF THERE IS EXCESSIVE GRAVEL OR DEBRIS THAT CANNOT BE REMOVED BY CONVENTIONAL
METHODS, PROVIDE 4-INCHES OF TOPSOIL AT NO ADDITIONAL COST TO THE COUNTY OVER
THESE AREAS. TOPSOIL SHALL BE FERTILE, LOOSE, FRIABLE AND LOAMY AND NOT CONTAIN
DEBRIS OR PARTICLES LARGER THAN 1/2-INCH IN ANY DIMENSION. TOPSOIL SHALL CONTAIN
BETWEEN 6 AND 20 PERCENT ORGANIC MATERIAL AND NO MORE THAN 18% MOISTURE. TEST
TOPSOIL ACCORDING TO SUPPLEMENT 1016.
Designer Note:
Use this note on all projects requiring seeding and mulching.
Note #DC-EC002
ITEM 659-TOPSOIL, AS PER PLAN
PROVIDE PULVERIZED TOPSOIL THAT IS FERTILE, LOOSE, FRIABLE AND LOAMY AT
LOCATIONS SHOWN IN THE PLAN OR AS DIRECTED BY THE ENGINEER. TOPSOIL SHALL BE
FURNISHED FROM COMMERCIAL SOURCES (TOPSOIL SUPPLIERS) OR SHALL BE FURNISHED FROM
STOCKPILES THAT ARE APPROVED BY THE DEPARTMENT.
IN ADDITION TO THE REQUIREMENTS OF 659, TOPSOIL SHALL CONTAIN BETWEEN 6 PERCENT
AND 20 PERCENT ORGANIC MATERIAL. TOPSOIL SHALL NOT CONTAIN MORE THAN 18%
MOISTURE AND SHALL BE FREE OF WEEDS AND OTHER DELETERIOUS MATERIAL. TOPSOIL
SHALL NOT CONTAIN MORE THAN 5 PERCENT OF MATERIAL NOT PASSING THE 1/2-INCH
SIEVE, OR ANY MATERIAL 1-INCH OR LARGER IN ANY DIMENSION. FOR TOPSOIL TO BE
CONSIDERED LOAMY, ENSURE THAT THE FRACTION PASSING THE NO. 10 SIEVE DOES NOT
CONTAIN MORE THAN 40 PERCENT CLAY. TEST FOR ACIDITY OR ALKALINITY AND ENSURE
THAT PH IS BETWEEN 6 AND 7. TEST TOPSOIL ACCORDING TO SUPPLEMENT 1016.
Designer Note:
Use this note on project that have areas to be seeded in lawns or other highly
maintained areas.
DRAINAGE GENERAL NOTES
Note #DC-DR001
CONCRETE ENCASEMENT FOR PIPES
FOR ALL CULVERT AND SEWER PIPES SPECIFIED IN THE PLANS AND/OR PIPES WITH LESS
THAN 24” OF COVER BETWEEN TOP OF PIPE AND PAVEMENT OR TREATED SHOULDER SUBGRADE,
CONCRETE ENCASEMENT SHALL BE PROVIDED FOR THE FULL WIDTH OF THE TRENCH AND
WITHIN LIMITS OF THE PAVEMENT OR TREATED SHOULDERS. CONCRETE SHALL EXTEND
VERTICALLY TO THE PAVEMENT OR SHOULDER SUBGRADE, OR MAY EXTEND INTO THE PAVEMENT
SECTION IF ALLOWED BY THE ENGINEER.
FOR AREAS NOT REQUIRING OPENING TO TRAFFIC WITHIN 3 DAYS, PROVIDE CLASS F OR
CLASS C CONCRETE. FOR AREAS THAT REQUIRE OPENING TO TRAFFIC WITHIN 24 HOURS,
PROVIDE CLASS MS OR FS CONCRETE, AT NO ADDITIONAL COST. CONCRETE SHALL BE PLACED
AT A MAXIMUM SLUMP OF 7 INCHES, PROVIDED THE INCREASE IN SLUMP IS ACHIEVED BY
ADDING A CHEMICAL ADMIXTURE CONFORMING TO THE REQUIREMENTS OF 705.12, TYPE F OR
G.
CONCRETE SHALL NOT BE DROPPED WITH A FREE-FALL DISTANCE OF GREATER THAN 5 FEET.
CONCRETE PLACED WHEN THE ATMOSPHERIC TEMPERATURE IS 32 °F OR LESS, OR IF WEATHER
FORECASTS PREDICT THESE TEMPERATURES DURING THE CURING PERIOD, NON-CHLORIDE
ACCELERATING ADMIXTURES SHALL BE PROVIDED. CHLORIDE ADMIXTURES MAY BE USED ONLY
WITH APPROVAL OF THE ENGINEER.
PAYMENT SHALL BE BASED ON THE NUMBER OF LINEAR FEET OF PIPE ENCASED AS MEASURED
FROM THE REQUIRED LIMITS. NO ADDITIONAL COMPENSATION WILL BE MADE FOR
OVER-EXCAVATED TRENCHES OR ADDITIONAL LENGTH OF PIPE ENCASED WHEN NOT
PRE-APPROVED BY THE ENGINEER.
Designer Note:
Use this note when there is sewer pipe with less than 24” of cover to subgrade
or is otherwise specified by the Department.
PAVEMENT GENERAL NOTES
Note #DC-PA001
ITEM 407-TACK COAT AND ITEM 408- PRIME COAT
THE ENGINEER SHALL ADJUST THE RATE OF APPLICATION IN THE FIELD OF THE 407 TACK
COAT AND 408 PRIME COAT AS NEEDED. FOR ESTIMATING PURPOSES ONLY, THE PLAN
QUANTITIES INDICATE AN AVERAGE APPLICATION RATE FOR THESE ITEMS. DO NOT ORDER
MATERIALS FOR THESE ITEMS UNLESS AUTHORIZED BY THE ENGINEER.
Designer Note:
Use this note on all projects requiring asphalt concrete pavement.
Note #DC-PA002
SAWCUTS AND ASPHALT CONCRETE JOINTS
THE COST OF SAWCUTS, BUTT JOINTS AND SEALING THESE JOINTS THAT ARE NOT
SEPARATELY ITEMIZED IN THE PLANS SHALL BE CONSIDERED INCIDENTAL TO THE PAVING
ITEMS. ALL JOINTS BETWEEN EXISTING AND PROPOSED ASPHALT CONCRETE PAVEMENT SHALL
BE SEALED WITH AN 8” WIDE ASPHALT CEMENT (AC) BAND OF LIQUID ASPHALT MEETING
MEETING 702.02, 702.03 OR 702.04 AT NO ADDITIONAL COST.
Designer Note:
Use this note on all projects requiring asphalt concrete pavement.
Note #DC-PA003
PAVEMENT JOINT MESH REINFORCEMENT
PROVIDE A SELF ADHESIVE PAVEMENT JOINT REINFORCING MESH AT THE LOCATIONS SHOWN
IN THE PLAN OR AS DIRECT BY THE ENGINEER, MEETING THE FOLLOWING SPECIFICATIONS:
MINIMUM APERTURE DIMENSIONS 0.375 IN. X 0.375 IN.
MAXIMUM APERTURE AREA 0.75 SQ. IN.
PERCENT OPEN AREA 40% TO 70%
MINIMUM ULTIMATE TENSILE STRENGTH (T ULT)
MACHINE DIRECTION (MD) 500 LB/FT
MINIMUM ULTIMATE TENSILE STRENGTH (T ULT)
ACROSS MACHINE DIRECTION (XMD OR CMD) 500 LB/FT
MINIMUM WEIGHT 10 OZ PER SQ YD PER ASTM D 5261-92
MAXIMUM ELONGATION AT BREAK 6% AS PER ASTM D 6637
MINIMUM MELTING POINT 400°F
PAVEMENT AREAS SHALL BE CLEANED AND FREE OF DEBRIS PRIOR TO PLACEMENT. MESH
SHALL BE APPLIED TO PAVEMENT IN A MANNER THAT WILL RESIST MOVEMENT OR DEBONDING
FROM CONSTRUCTION AND PAVING TRAFFIC. MESH SHALL BE PULLED TIGHT TO ELIMINATE
RIPPLES. FOLLOW ALL OTHER MANUFACTURER'S RECOMMENDATIONS FOR INSTALLATION OF THE
MATERIAL.
Designer Note:
Provide this item for areas where there is pavement widening that may be subject
to settlement cracking relative to the existing pavement or if specified by the
Department.
MAINTENANCE OF TRAFFIC GENERAL NOTES
Note #DC-MT001
MAINTENANCE OF TRAFFIC GENERAL NOTES
IN ADDITION TO THE REQUIREMENTS FOR MAINTAINING TRAFFIC AS INDICATED IN THE OHIO
MANUAL OF UNIFORM TRAFFIC CONTROL DEVICES FOR STREETS AND HIGHWAYS, CURRENT
EDITION AND ITEM 614, COMPLY WITH THE FOLLOWING REQUIREMENTS:
BEFORE WORK BEGINS, DESIGNATE A PERSON UNDER THE CONTRACTOR'S EMPLOYMENT TO BE
RESPONSIBLE FOR MAINTAINING TRAFFIC CONTROL DEVICES ASSOCIATED WITH THIS
PROJECT. THIS PERSON MUST BE AVAILABLE TO BE CONTACTED 24 HOURS A DAY BY THE
DELAWARE COUNTY ENGINEER AND ALL INTERESTED LAW ENFORCEMENT AGENCIES IN THE
EVENT THAT ANY PROBLEMS ARISE DURING NON-WORKING HOURS. THIS PERSON SHALL
CORRECT ANY DEFICIENCIES WITHIN 4 HOURS OF NOTIFICATION BY THE ENGINEER OR LAW
ENFORCEMENT AGENCIES. SUBMIT TO THE ENGINEER, IN WRITING, THE NAME AND
TELEPHONE NUMBER OF THIS PERSON NO LESS THAN THREE (3) WORKING DAYS BEFORE
INSTALLATION OF ANY TRAFFIC CONTROL DEVICES. DELAWARE COUNTY ENGINEER, 50
CHANNING STREET, DELAWARE, OHIO 43015, PHONE: 740-833-2400, FAX: 740-833-2399.
FURNISH, ERECT, AND MAINTAIN SIGNS, SIGN SUPPORTS, AND BARRICADES OF THE TYPE
AND LOCATION SHOWN IN THESE PLANS. PAYMENT FOR ALL DETOUR SIGNING SHALL BE
INCLUDED IN THE CONTRACT PRICE FOR ITEM 614, __(MAINTAINING TRAFFIC OR DETOUR
SIGNING)__.
THE CONTRACTOR MAY SUBMIT ALTERNATE METHODS FOR THE MAINTENANCE OF TRAFFIC,
PROVIDED THE INTENT OF THE ABOVE PROVISIONS IS FOLLOWED AND NO ADDITIONAL
INCONVENIENCE TO THE TRAVELING PUBLIC RESULTS THERE FROM. DO NOT PLACE AN
ALTERNATE PLAN INTO EFFECT UNTIL APPROVAL HAS BEEN GRANTED BY THE ENGINEER.
THE FOLLOWING QUANTITIES HAVE BEEN INCLUDED IN THE GENERAL SUMMARY FOR
MAINTENANCE OF TRAFFIC:
ITEM 614, MAINTAINING TRAFFIC LUMP SUM
ITEM 614, DETOUR SIGNING LUMP SUM
Designer Note:
Use this note on all projects that require a closure of the road with a posted
detour. Provide ODOT plan insert sheet 2010160, available here: http://www.dot.state.oh.us/traffic/Publication%20Manuals/PIS/PISs.htm
Fill in the pay item blanks with the appropriate items. On most projects, it is
desirable to have separate pay items for Item 614, Maintaining Traffic and Item
614, Detour Signing. If the project is small or there is minimal signing
required, it may be appropriate to include all work in Item 614, Maintaining
Traffic.
Note #DC-MT002
LOCAL ACCESS
MAINTAIN INGRESS AND EGRESS TO ALL PROPERTIES AFFECTED BY THIS IMPROVEMENT AT
ALL TIMES. ANY COSTS ASSOCIATED WITH THIS WORK SHALL BE INCLUDED IN THE CONTRACT
PRICE FOR ITEM 614, MAINTAINING TRAFFIC, AND SHALL INCLUDE ALL LABOR, EQUIPMENT
AND MATERIALS NECESSARY TO MAINTAIN LOCAL ACCESS TO PROPERTIES.
Designer Note:
Use this note on projects that have local residences within the work limits.
Note #DC-MT003
NOTICE OF CLOSURE
NOTIFY THE ENGINEER IN WRITING AT LEAST 7 DAYS IN ADVANCE OF INTENDED ROAD
CLOSURE. THE _(COUNTY/CONTRACTOR)_ SHALL PROVIDE AND MAINTAIN _#_ CLASS _A OR B_
PORTABLE CHANGEABLE MESSAGE SIGNS (PCMS) IN ACCORDANCE WITH SUPPLEMENTAL
SPECIFICATION 1061. PCMS’S SHALL BE POSITIONED TO DISPLAY THE DATE AND DURATION
OF THE ROAD CLOSURE FOR THE PERIOD OF TIME AND AT LOCATIONS SPECIFIED IN THE
PLANS, OR AS DIRECTED BY THE ENGINEER.
PROVIDE THE FOLLOWING MESSAGES, OR OTHER MESSAGES AS DIRECTED BY THE ENGINEER (*
DENOTES LIMITS OF EACH SCREEN MESSAGE):
*________*
*________*
*________*
*________*
Designer Note:
Use this note on projects that require closure of the road. Fill in the blank
with who will be responsible for providing PCMS. Class “A” PCMS is used for
roads with speeds 45mph and over. Class “B” PCMS is used for roads 40mph and
under. The note may include the second paragraph defining the actual messages to
be displayed, especially if the Contractor is to provide signs.
Examples:
*ROAD CLOSED AHEAD*
*BEGINNING JAN 1*
*FOR 60 DAYS*
*USE DETOUR*
STRUCTURE GENERAL NOTES
Note #DC-BR001
CONCRETE CURING AND PLACEMENT REQUIREMENTS
THE REQUIREMENTS OF 511.17 SHALL APPLY EXCEPT THAT _(BEAMS/GIRDERS/SLAB)_ SHALL
NOT BE PLACED UNTIL ABUTMENT CONCRETE AT OR BELOW THE BEAM SEAT HAS CURED FOR A
MINIMUM OF 7 DAYS AND HAS REACHED A COMPRESSIVE STRENGTH OF 60% DESIGN
STRENGTH. MEASUREMENT SHALL BE DETERMINED BY THE DEPARTMENT’S CONCRETE TEST
CYLINDERS.
Designer Note:
Use this note on all bridge projects with structural beams or girders that bear
on abutment concrete. This note is intended to clarify 511.17 and to ensure that
abutment concrete is of adequate strength to support dead load of beams or
girders. Change text to the applicable type of superstructure as needed.
Note #DC-BR002
CONCRETE STRENGTH REQUIREMENTS AND ACCEPTANCE
STRUCTURAL CONCRETE REQUIRED IN THE PROJECT SHALL ATTAIN THE FOLLOWING MINIMUM
28-DAY COMPRESSIVE STRENGTH (F’C):
CLASS HP CONCRETE – 4,500 PSI
CLASS C CONCRETE – 4,000 PSI
CONCRETE STRENGTH SHALL BE EVALUATED AND ACCEPTED IN ACCORDANCE WITH AMERICAN
CONCRETE INSTITUTE (ACI) 301-99, SECTIONS 1.6.6 THROUGH 1.6.7. THE DEPARTMENT
WILL BE RESPONSIBLE FOR INITIAL CONCRETE SAMPLING AND TESTING. A SET OF FOUR
(4) CYLINDERS WILL BE TAKEN FOR EACH TEST REQUIRED BY THE ENGINEER. ONE
CYLINDER WILL BE TESTED AT SEVEN (7) DAYS AFTER PLACEMENT, OR AS EARLY AS THREE
(3) DAYS AFTER PLACEMENT IF REQUESTED BY THE CONTRACTOR, TO DETERMINE CURING
PROGRESS. TWO (2) CYLINDERS WILL BE TESTED AT 28 DAYS, AND THE MEAN COMPRESSIVE
STRENGTH OF THESE TWO (2) TEST SPECIMENS SHALL BE THE BASIS FOR DETERMINING
SATISFACTORY STRENGTH LEVEL. IF THE MEAN OF THE TWO SPECIMENS IS LESS THAN 95%
OF THE MINIMUM 28-DAY COMPRESSIVE STRENGTH (F’C) LISTED ABOVE, THE CONCRETE FROM
THE PORTION OF THE WORK BEING TESTED, INCLUDING ALL CONCRETE FROM THE SAME
SUPPLIER USED IN THE DAY’S WORK, SHALL BE CONSIDERED POTENTIALLY DEFICIENT. IF
THE CONCRETE IS DETERMINED TO BE POTENTIALLY DEFICIENT, THE REMAINING TEST
CYLINDER WILL BE HELD FOR TESTING AT 56-DAYS.
STRUCTURAL ANALYSIS AND/OR ADDITIONAL TESTING MAY BE REQUIRED WHEN THE STRENGTH
OF THE CONCRETE, IN PLACE, IS CONSIDERED POTENTIALLY DEFICIENT. THE DEPARTMENT
SHALL PERFORM ADDITIONAL TESTING OF IN-PLACE CONCRETE THAT IS CONSIDERED
POTENTIALLY DEFICIENT OR MAY REQUIRE THE CONTRACTOR TO PERFORM ADDITIONAL
TESTING, AND DESIGN OF REINFORCEMENT USING ADDITIONAL CONSTRUCTION, IN-LIEU OF
REMOVAL AND REPLACEMENT. ANY ADDITIONAL TESTING PERFORMED ON POTENTIALLY
DEFICIENT CONCRETE SHALL BE AT THE CONTRACTOR’S EXPENSE.
Designer Note:
Use this note on all bridge projects with structural concrete. This note expands
on the requirements of ODOT Items 499 and 511 and requires structural concrete
to meet design strength requirements, beyond the mixture and placement
requirements of 499 and 511.
Note #DC-BR003
CONTAINMENT OF POLLUTANTS
THE CONTRACTOR SHALL PROVIDE A PLAN AND METHOD TO CONTAIN ALL POTENTIAL
POLLUTANTS INCLUDING SOLVENTS, PAINTS, SEALERS, OIL, GREASE, ETC., ENTERING THE
WATER. THE PROPOSED CONTAINMENT PLAN SHALL BE SUBMITTED IN WRITING TO THE
ENGINEER NO LESS THAN 14 DAYS PRIOR TO BEGINNING CONSTRUCTION. WORK SHALL NOT
BEGIN UNTIL THE ENGINEER APPROVES THE PLAN IN WRITING.
Designer Note:
This note may be required whenever the project is in or over a waterway that is
a public drinking water supply, such as a reservoir, or other any other major
water course.
NOTE #DC-BR004
DEMOLITION DEBRIS
NO PORTIONS OF THE DEMOLITION DEBRIS SHALL FALL INTO THE WATER. THE CONTRACTOR
SHALL SUBMIT THE PROPOSED METHOD OF REMOVING THE EXISTING STRUCTURE TO THE
ENGINEER NO LESS THAN 14 DAYS PRIOR TO STARTING REMOVAL OPERATIONS. NO REMOVALS
SHALL BE PERFORMED WITHOUT WRITTEN APPROVAL OF THE ENGINEER.
Designer Note:
This note maybe required whenever the project is in or over a waterway that is a
public drinking water supply, such as a reservoir, or other any other major
water course.
Note #DC-BR005
ITEM 516-ELASTOMERIC BEARINGS
DESTRUCTIVE TESTING BY AN INDEPENDENT LABORATORY SHALL BE REQUIRED AS STATED IN
711.23. THE CONTRACTOR SHALL PROVIDE CERTIFIED TEST RESULTS NO LESS THAN 14 DAYS
BEFORE BEARINGS ARE INCORPORATED INTO THE WORK.
Designer Note:
Use this note on all bridge projects with elastomeric bearings. This note is
intended to clarify and enforce the requirements of destructive testing of a
sample bearing as required in 711.23.
|
