North Gateway 5-CS100222T H E C 1 T Y O F
February 19, 2010
John Measels, P.E.
Greenberg - Farrow
2611 Internet Blvd.
Frisco, TX 75034
COPPELL
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RE: North Gateway Plaza, Lot 5 Block A
Concrete Placement
Dear Mr. Measels:
During inspection of the sub -grade preparation for the paving of the fire lanes and parking area
for Rosa's Cafd, it came to our attention that the approved plans and the City of Coppell
Standard Construction Details and Specifications were not followed. A variance request to use
an alternative method of sub -grade preparation was not submitted by your office. Lime was
placed on Thursday, February 18, 2010 and concrete poured on Friday, February 19, 2010.
We do not approve of the method of concrete placement used on this project, however, since this
is private paving and maintained by the property owner, we will not ask that the concrete be
removed. Because no variance was requested or granted, the City of Coppell cannot be held
responsible for any damages as a result of the contractor using this concrete placement method.
Attached is a copy of the paving specifications. You may contact me at your convenience if you
have any questions.
Sincerely,
9 --
Albert Samaniego
Construction Inspector
Office Phone: (972) 304 -3679
Fax: (972) 304 -3570
Attachment
is ael Garza, E.I.T.
255 PARKWAY * P.O.BOX 9478 * COPPELL TX 75019 * TEL 972/462 0022 * FAX 972/304 3673
FIRE LANE GENERAI NO
I. MINIMUM FIRE LANE WIDTH SHALL BE 24' CLEAR
(FACE OF CURB TO FACE OF CURB) WITH NO
HORIZONTAL OBSTRUCTIONS.
2. MINIMUM FIRE LANE VERTICAL CLEARANCE SHALL BE 14' -0'.
3. FIRE LANE SHALL INTERSECT WITH A DEDICATED PUBLIC STREET
RIGHT OF WAY. FIRE LANES OVER 150' IN LENGTH SHALL INTERSECT
WI TH A PUBLIC STREET AT EACH END OF THE FIRE LANE, OR
TERMINATE IN A CONFIGURATION SHOWN ON STANDARD
CONSTRUCTION DETAIL 2310.
4. FIRE LANE SHALL BE STRIPED AND LETTERED AS SHOWN IN
STANDARD CONSTRUCTION DETAIL 2320.
5. FIRE LANE AND WATER LINE WITH FIRE HYDRANTS SHALL BE
COMPLETED PRIOR TO ANY BUILDING CONSTRUCTION. FIRE
LANE SHALL BE UNOBSTRUCTED AND AVAILABLE FOR USE BY
THE FIRE DEPARTMENT DURING BUILDING CONSTRUCTION.
NOTES:
1. MIN. PAVEMENT STRENGTH SHALL
CLASS 'C', OR AS SPECIFIED BY CITY.
2. CURB HEIGHT AND WIDTH SHALL BE 6', OR AS SPECIFIED
BY CITY. SEE STANDARD CONSTRUCTION DETAIL 2120.
3. SUBGRADE (MIN. REQUIREMENTS- UNLESS OTHERWISE
APPROVED BY CITY ENGINEER). SUBGRADE UNDER
ALL PAVEMENT SHALL BE INITIALLY MIXED 8' THICK
AND RE -MIXED 6' THICK AND SHALL BE
S TABIUZED WITH 6% MIN. BY WEIGHT OF HYDRATED LIME
(GENERALLY 740 LBS. /S.Y.) AND COMPACTED TO A DENSITY NOT
LESS THAN 95% STANDARD PROCTOR DENSITY.
ALTERNATIVE SUBGRADES, SUPPORTED BY LABORATORY
TESTS, MAY BE SUBMITTED TO THE CITY ENGINEER
FOR APPROVAL.
4. PAVEMENT SURFACE FINISH SHALL BE TRANSVERSE TO TRAFFIC
LANES AND SHALL BE BAKER BROOM FINISH UNLESS OTHERWISE
SPECIFIED BY CITY.
5. ALL DIMENSIONS TO BACK OF CURB AND IN FEET UNLESS OTHERWISE SHOWN,
6. FOR TRANSVERSE JOINT SPACING. SEE STANDARD CONSTRUCTION
DETAIL 2060.
OVERHEAD OBSTRUCTION —
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5'
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24' MIN. FIRE LANE WITHIN T'
F
DEDI FIRE LANE EASEMENT
1:50 MIN. SLOPE TOWAR
1
MIN. SLOPE TOWARD
DRAINAGE STRUCTURE
` 1:50
DRAINAGE STRUCTURE
— �— —.— —.— — —
(D SAWED LONGITUDINAL CONTRACTION JOINT
ON PAVEMENT LESS THAN 8' THICK.
KEY WAY CONSTRUCTION JOINT ON PAVEMENT
e
WITH THICKNESS OF 8' OR GREATER.
N0. 3 BARS AT SUBGRADE
SEE STANDARD CONSTRUCTION DETAIL 2050.
O.C.E.W. SEE NOTE 3
1 Q 18'
24' FIRE LANE
(LOCATED OUTSIDE OF PARKING AREA)
N.T.S.
OVERHEAD OBSTRUCTION
— —
N0. 3 BARS AT . t 2�
SUBGRADE
018" O.C.E.W. SEE NOTE 3
24' FIRE LANE WITH ADJACENT PARKING AREA
N.T.S.
WM STANDARDS ARE ADOPTED FROM THE NCTOG STANDARD
DRAMNGS DATED NOV, '96. "I LOCAL EXCEPTONS.
8
BAR SPACING F ROM 24 TO 18'.
LOCAL EXCEPTION
STANDARD CONSTRUCTION DETAILS
COPPELL FIRE LANE AND PARIONG LOT
REINFORCED CONCRETE PAVEMENT
DALE CITY OF COPPELL DALLASCOUNTY. TEXAS
STD. SPEC.
REFERENCE
301., 303.
INDARD DETAIL
2290
24' MIN. FIRE LANE WITHIN TYP.
w FR PARKING AREA
z_
DEDICATED FIRE LANE EASEMENT
WIDTH VARIES
MIN. SLOPE TOWARD
` 1:50
DRAINAGE STRUCTURE
— —
N0. 3 BARS AT . t 2�
SUBGRADE
018" O.C.E.W. SEE NOTE 3
24' FIRE LANE WITH ADJACENT PARKING AREA
N.T.S.
WM STANDARDS ARE ADOPTED FROM THE NCTOG STANDARD
DRAMNGS DATED NOV, '96. "I LOCAL EXCEPTONS.
8
BAR SPACING F ROM 24 TO 18'.
LOCAL EXCEPTION
STANDARD CONSTRUCTION DETAILS
COPPELL FIRE LANE AND PARIONG LOT
REINFORCED CONCRETE PAVEMENT
DALE CITY OF COPPELL DALLASCOUNTY. TEXAS
STD. SPEC.
REFERENCE
301., 303.
INDARD DETAIL
2290
PAVEMENT SYSTEMS
TESTING REQUIREMENTS
1. ALL TESTING ASSOCIATED WITH PUBLIC PAVING IMPROVEMENTS SHALL BE CONDUCTED BY A CERTIFIED LABORATORY
SELECTED BY THE CITY OF COPPELL ENGINEERING DEPT. THE CITY OF COPPELL SHALL PAY FOR INITIAL TESTS PERFORMED.
THE CONTRACTOR SHALL PAY ALL COSTS ASSOCIATED WITH ANY RE- TESTING.
2. ALL TESTING ASSOCIATED WITH PRIVATE PAVING IMPROVEMENTS SHALL BE CONDUCTED BY A CERTIFIED LABORATORY
SELECTED BY THE CONTRACTOR AND APPROVED CITY OF COPPELL ENGINEERING DEPT. THE CONTRACTOR SHALL PAY FOR ALL
TESTS PERFORMED UNLESS OTHERWISE NOTED ON THE PLANS AND SPECIFICATIONS.
3. EMBANKMENT MATERIALS SHALL BE TESTED AND CERTIFIED FOR DENSITY, MOISTURE AND GRADATIONS
AS SET FORTH IN THE NCTCOG SPECIFICATIONS, FOLLOWING STANDARD TEST PROCEDURES.
4. DENSITY TESTING SHALL BE PERFORMED ON EACH LIFT OF PROPERLY PLACED AND COMPACTED MATERIAL, AND MINIMUM
REQUIREMENTS FOR DENSITY SHALL BE NINETY -FIVE (95) PERCENT (7) OF THE MAXIMUM DENSITY AS DETERMINED BY ASTM D698.
5. MOISTURE CONTENT OF THE MATERIAL SHALL BE FROM OPTIMUM MOISTURE CONTENT TO PLUS FOUR (4) PERCENT (7) ABOVE OPTIMUM MOISTURE CONTENT.
6. THE MINIMUM FREQUENCY OF DENSITY TESTING SHALL BE THREE (3) TESTS PER ONE (1) FOOT LOOSE LIFT PER TWO THOUSAND (2000)
SQUARE YARDS OF SURFACE AREA.
7. RETESTING OF MATERIALS SHALL BE PERFORMED AT THE ORIGINAL TEST LOCATION.
8. GRADATIONS AFTER THE FINAL MIXING SHALL BE AS FOLLOWS:
MINIMUM PASSING 1 INCH LABORATORY SIEVE: 1007
MINIMUM PASSING NO, 4 LABORATORY SIEVE: 607
TESTS SHALL BE TAKEN EVERY ONE THOUSAND (1,000) SQUARE YARDS.
9. UPON COMPLETION OF THE WORK AND BEFORE FINAL ACCEPTANCE /FINAL PAYMENT SHALL BE MADE, PAVEMENT THICKNESS TESTS MAY BE CONDUCTED
AT THE DISCRETION OF THE CONSTRUCTION INSPECTOR. IF REQUIRED, THE NUMBER OF CORES FOR THICKNESS VERIFICATION SHALL BE BASED ON
THREE (3) CORES FOR EVERY TWO THOUSAND (2000) SQUARE YARDS OF PAVEMENT SURFACE AREA, OR ANY PART THEREOF.
11. DURING THE PROGRESS OF THE WORK, THE CONTRACTOR SHALL CAST TEST CYLINDERS TO MAINTAIN A CHECK ON THE COMPRESSIVE STRENGTH OF
THE CONCRETE BEING PLACED. SAMPLING AND MOLDING OF TEST SPECIMENS SHALL MEET THE APPLICABLE ASTM GUIDELINES. CONCRETE PAVEMENT
TESTING SHALL REQUIRE THREE (3) INDIVIDUAL STRENGTH SAMPLES PER TEST, AT A FREQUENCY OF ONE TEST PER ONE HUNDRED (100) CUBIC
YARDS, OR FRACTION THEREOF, OF CONCRETE PLACED PER DAY. A COPY OF THE TEST RESULTS SHALL BE DELIVERED TO THE ENGINEERING DEPARTMENT
AND SHALL INCLUDE THE DATE AND TIME OF SAMPLING, EXACT LOCATION CONCRETE WAS PLACED, TRUCK TICKET NUMBER, SLUMP, AIR CONTENT, AND
TEMPERATURE OF CONCRETE.
10. ANY DEFICIENCIES IN CONCRETE THICKNESS OR STRENGTH SHALL BE HANDLED IN ACCORDANCE WITH NCTCOG ITEM 303.8.
NQM STANDARDS ARE ADOPTED FROM THE NCTOG STANDARD
DRANWGS DATED NOV. '96, "TH LOCAL EXCEPTIONS.
- -___
STANDARD CONSTRUCTION DETAILS
STD.
COPPELL
PAVEMENT SYSTEMS
ENirl
N0.
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TESTING REQUIREMENTS
STANDARD DET
LOCAL EXCEPTION
BY
DATE
OITY OF COPPELL DALLAS COUNTY, TEXAS
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2340