MASSitHIGHWAY
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Number:
E-94-003
Date:
10/26/94
ENGINEERING DIRECTIVE
HIEF ENGINEER
REVISIONS TO THE CONSTRUCTION STANDARD DRAWINGS ON PRECAST MEDIAN BARRIER FOR TEMPORARY TRAFAC CONTROL The purpose of this Engineering Directive is to formally notify ALL
Department Engineering Personnel of a change to the Construction Standard
Drawings 401.15.1 and 401.15.2.
Effective immediately, in all projects, the connecting pin is to be completely
contained within the cross section of the barrier. Notes on Drawing 401.15.1 require
the pin to be heat bent to ensure a smooth bend and prevent shattering of the pin.
This applies to new projects as well as on going projects. Resident
Engineers are to order the contractor to make any necessary changes.
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M-401.15.2 DATEO
NOV. 1994.
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SECTION
SECTION B-8
SECTION A-A
NOTE:
THE ENTIRE PIN JOINING ADJACENT BARRIERS MUST BE COHPLETELY
\.IITHIN THE CROSS-SECTION OF THE TEMPORARY CONCRETE BARRIER.
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NOTES:
~@» t. BEND REBARS AROUND A
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2. BARS R-1 AND R-2 SHALL BE FABRICATED CONT­
INUOUSLY, OR AT THE OPTION OF THE CONTRACTOR. THE BARS MAY BE
FABRICATED \JITH 15"
MINIMUM LAPS AT THE
LOCATIONS SHO\JN.
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3. PIN CONNECTION
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4. THE 1" fZJ PIN SHALL BE
HEAT BENT TO A 5/8"
RADIUS <1 114" DIAMETER).
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CONSRUCTION
PIN
ELEVATION
CONSRUCTION PIN
ALSO SEE ORAUING 401.15.2
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CONNECTION PIN DETAIL