17-15 17-20 17-21 17-29 17-30 17-32 17-33 OO 17-11 17-14 Telephone Switchboards and Instruments 17-1 Submarine Telephone Cable 17-2 Subscribers Loops 17-2 Public Address Systems 17-3 eee 17-04 17-10 Intercommunication System 17-5 Radio 17-5 SECTION 18 CONTROL AND SIGNAL SYSTEM 18-01 18-02 General Conditions Scope 18-1 18-1 18-03 18-07 Submarine Control and Signal Cable 18-1 18-08 18-11 Underground Control and Signal Cables 18-5 18-12 Coaxial Cable Installation 18-5 SECTION 19 PLUMBING 19-01 19-02 19-03 19-04 19-05 19-06 19-07 19-08 19-09 19-10 19-11 19-12 19-13 Scope of the Work Applicable Specifications Trenching and Backfilling Concrete Work Locations Sanitary Systems Fresh Water Systems Salt Water Systems Hot Water Systems Fuel 011 Systems Air System Gas System Pipe