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�' <br />� <br />� <br />� <br />� <br />302„2Q5 Continu�d. � <br />300-5 <br />Curb baxe� $�s11 be gra� iron castings aonforming �o the require�ents <br />of ASTM A 4$ for Cl�sa 2A or high�r te�sile strength, <br />Eaeh cui•b box and curb stop shall be permanently and plainly marked <br />with tha� na�e or trademark of the �anufaeturer. <br />302.2�6 � Re e� V�Le .�d a e Manhole <br />Air rel�s��' v a l v e a n d man ho l� s hall be in�ta�lled as shoWn on the plans. <br />� Vaive� larger thai, ,1 inehe� in diamet�r �hall be plaeed i,n <br />manholes. rsanholes ahall meet the requiarements of the Sp�eial <br />Details in the plans and th� reQuirem�nts speoified in the Storm <br />� Seaer Specifications oF Section 500. Man2lole frames and eAvers <br />shall be equal to Neenah R-1730. <br />� <br />� <br />3�2.300 In�ula ion <br />Insulation shall be equal to Aow Chemical Company STRYFOAM HI brand <br />plastic faam� <br />302.�00 Caskets <br />� R�abber Gaskets for mechanieal joint and <br />ASA A21,11 and shal?. be de�igned and manufactured�totexactldimensions� <br />to assure a liquid tight joint. <br />� <br />� <br />� <br />� <br />�� <br />� <br />� <br />� <br />� <br />� <br />302.500 Electrical Bondina of Joints <br />Each joint on cast iron pipe, valves� hydrant� or fittings� either <br />"push-on" or mechanical joint type sha11 be eleetrically bonded with <br />an external capper jumper capable of carrying 500 amps. of current for <br />an extended period of time to provide integral electric thawing <br />capabilities. <br />These copper jur�pers Qan be either shop or• field applied in accordance <br />with these specifiGati�ns. For field applied copper j�impers, either <br />the "Surndy-ThermoWeld" as supplied by Burndy Corporation, Norwa].k� <br />Connecticut, or "Cadweld�f �y Erico Products Company, Cleveland, Ohio <br />will be permitted. <br />Contractors or su�pliers shall submit the method they propose to use <br />�'or approval prior to construc;tion. <br />The copper ji�mper shall be a minimum 1/16" X 1/2" wide flat strip or <br />equal cross seetion round copper wire in the annealed condition <br />conforming to ASTM Specification B152-58 Type DHP. <br />The copper jumpers shall be welded to the <br />meta.Ilie-arc weldin Aipe and fiticings by the <br />g process, if shop applied or by the exothermic <br />welding process if field applied. <br />