???? Conventions ??????? ???? ????? ??? ???????? ??? ????? ??????. ???? ??? ????????? duties ??? side ???? ????? upkeep machinery, and details schedules ???????. ?????? ??? ????????? ?? ???? disputes ??? parties and clarifying responsibilities ?? ??? Helps ?? ensuring quality projects ?????? ????? ???? ????? ????? ?????? ???????, ??? ??????

????? ??????? ???????? ?? ???? ??????? ???????? ????. ????? ??? ??????? ?????? ????? ???? ??? ??? ?????? ? ???? ?????????. ????? ???? ??? ??????????? ??????? ?? ??????? ????? ?????? ??????? ??????? ?????? ?????? ??????? ?????? ?? ??????? ?? ???? ??? ??????. ??? ?????? ???? ??? ??? ????? ????????? ???? ????? ?????? ?? ???? ????? ????? ???