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ARC � <br /> v¢eioelafrd'.�2oc,b�cy Conlcaelou <br /> ��� <br /> P.O. Box 1794 Woodinvflle. Washington 98U72 <br /> (206) 4813456 or (206) 481•7222 <br /> ASSOCIATED ROCKERY CONTRACTORS <br /> STANDARD ROCKERY CONSTRUCTION GUIDEUNES <br /> 1.01 Introduction• <br /> 1.01.1 Historical Backeround: 'Ihese standard rockery consnuction guidelines have been.developed <br /> :n an effort to provide a more stringent degree of control on roclaery materials and consavcdon methodology <br /> in the PaciEic Northwest. 'Ihey have been assembled from numerous other standazds presendy in use?a the <br /> area,from expertise provided by local geotecturical engincers,and from the wide ex�xrience of the mcmt�ers <br /> of the Associated Rockery Conaactors (AR�. <br /> 1.01.2 Goal• 'Ihe primary Sa� of thi� document ace to standardize the methods of constxucdon for <br /> rockeries over four feet in height, and to provide a means of vecifying the 9uality of maurials used in <br /> c�nstxucdon and the wo�kmanship employed in construcdon. 'It�is standard 1�as also been developed in a <br /> manner that makes iG to the best of ARCs laowledge, more stringent than the other standaMa pciesendY N <br /> use by local munieipaliries. <br /> 2.01 Mater'�als: <br /> 2.01.1 Rock Qualitv: �+u'rock shall be sound, angulaz ledge rock that is resistant to weathering. '[1�e <br /> longest dimension of any individual rock should not exceed three times its shottest dimension. Acceptability <br /> of rock will be determined by laboratory tests as hereinafter specified, geologic examination and historical <br /> usage records. <br /> All rock delivered to and incorporated in the project shall meet the following minimum specifications: <br /> a. Absorption ' Not more rhan 2.0%for igneous and <br /> ASTM C127 metamorphic rock rypes. <br /> Page 1 - <br /> 12J05/91 <br />