CHAP. XII.] METHODS COMBINED. 201 



complied with, then, where long spans are desirable, the con- 

 tinuous girder may be preferable to a succession of single 

 'spans. 



If the greatest negative reaction at any support, as D, is 

 greater than the constant positive reaction at that point due to 

 the dead load, the girder will require to be latched or held 

 down at that support 



