559 - Construction contracts.

§ 559. Construction contracts. The authority shall do all construction  pursuant   to  a  contract  or  contracts  in  the  manner,  so  far  as  practicable, provided in the charter of the city for contracts  of  such  city  except  that  where  the  estimated expense of a contract does not  exceed ten thousand dollars such contract may be  entered  into  without  public  letting,  but  failure  to  comply  with  this section shall not  invalidate such contracts.