Hurricane ties are hardware pieces that connect the joists to cantilevered beams to reduce uplift forces caused by high winds.  These are inexpensive and are a good precaution to use wherever high winds may be a problem especially in zones where hurricanes and tornadoes are common. 

Be sure that the hurricane ties and fasteners are compatible with new pressure treated lumber.  Hurricane ties will not usually be required by your local building department but are nevertheless a cost effective method of securing your joists over a cantilevered beam that may be lifted by high winds.