474 



ERECTION OF STRUCTURAL STEEL. 



CHAP. XIV. 



Weight of 

 Traveler = 

 25 tons- 



Safe loads 



For 240O Jbs 



Fiber $ tress s 



15,000 Ibs- ab 



CROSS SECT/ON pounds 



. points /, 2,3, 4, 

 5 or 6 , not app//'ed ^ 

 simultaneously 



Traveler wheel 

 figured for 30,000 \ 



t.^_ 



Weight of Traveler 

 =36 Tons- 



/ 6"*S" 



Safe Joads 

 for 2400 Ibs. 

 fiber stress, 

 25,000 Ibs-at 

 points / or 2 and 

 20,000 Jbs-ab 

 points 3, 4,5 or 6, 

 not applied ' s/'mt//- 

 taneous/y- 



Trsve/er wheel 

 figured for 30,000 



,3'*/6 



Weight of 

 Traveler = 

 22? Tons- 



. f-3"*8" 



SECT1ON\ 



/JO"*/2- } 2-4"* '8 



fO"*10" 



Weight of Trsvefer 

 30 Tons' 



Safe load for 

 2200 fbs. fiber 



stress, 15,000 



at points 1,2 or 



4, /0,OOO/bs- 

 at points 5, and 

 30,000 Ibs -s& 

 point 3 Loads 



applied simu/tan- ^_\ CROSS SECT/ON 

 eousfy on/y 3t ^ 



, points number- 



Traveler 

 wheel is 

 f/gured for 

 30, Off O Ibs. 



PLAH 



TRAVELER 



SaFe loads for 

 fiber stress of 

 2200 Ibs-, 

 15, 000 Ibs-tf 

 points 1,25,000 

 Ibs' at points 2. 

 3, 4 or 5' Loads 

 dpp/ied simultdn - 

 eousfy on/y at 

 po/nts numbered alike 

 Trave/er 



figured for 

 30,000 Ibs. 



PLAH 



TRAVELER N 4 



FIG. 23. STANDARD TIMBER TRAVELERS. AMERICAN BRIDGE COMPANY. 



