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SECTION 02780 - UNIT PAVERS

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					Balance Associates, Architects                  Penstemon                                           1/8/11



SECTION 02780 - UNIT PAVERS


PART 1 - GENERAL


1.1        SECTION REQUIREMENTS

      A.   Not Applicable


1.2        SUBMITTALS

      A.   Comply with the provisions of Section 1300.


PART 2 - PRODUCTS


2.1        UNIT PAVERS

      B.   Concrete Pavers: Solid, interlocking paving units, made from normal-weight aggregates.

           1.    Size: & Color: To Be Determined.


2.2        AGGREGATE SETTING-BED MATERIALS

      A.   Graded Aggregate for Base: Washed stone; ASTM C 33, Coarse Aggregate Size No. 8.

      B.   Geotextile: Woven or nonwoven polyester or polypropylene.

      C.   Sand for Leveling Course: ASTM C 33, fine aggregate.

      D.   Sand for Joints: Fine, sharp, masonry sand.


PART 3 - EXECUTION


3.1        INSTALLATION, GENERAL


      B.   Cut unit pavers with masonry saw or block splitter where necessary.

      C.   Tolerances: Do not exceed 1/16-inch unit-to-unit offset (lippage) nor 1/4 inch in 10 feet from
           level or indicated slope.


3.2        AGGREGATE SETTING-BED PAVER INSTALLATION

      A.   Place aggregate base and compact with plate vibrator.

      B.   Place geotextile over compacted base course overlapping ends and edges at least 12 inches .



UNIT PAVERS                                                                                    02780 - 1
Balance Associates, Architects                   Penstemon                                         1/8/11


   C.     Place sand for leveling course to a thickness of 1 to 1-1/2 inches .

   E.     Set pavers with a minimum joint width of 1/16 inch and a maximum of 1/8 inch . If pavers have
          spacer bars, place pavers hand-tight against spacer bars.

   F.     Vibrate pavers into leveling course with at least 3 passes of a low-amplitude plate vibrator
          capable of a 3500- to 5000-lbf compaction force at 80 to 90 Hz.

   G.     Spread dry sand and fill joints immediately after vibrating pavers into leveling course. Vibrate
          pavers and add sand until joints are completely filled, then remove excess sand. Leave a slight
          surplus of sand on the surface for joint filling.


END OF SECTION 02780




UNIT PAVERS                                                                                     02780 - 2

				
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