I'l.AlKS. 



Ill', 



carrying a uniform load w per square inch. Let / a be the unit stress parallel to a, ft be the unit 

 stress parallel to b, and a > b. 



2(0* 



For a square plate o = b, 



(a* 



, w-a* 



f . 



4* 

 w-a* 



(33) 



(34) 



(35) 



The strength of plates simply supported on the edges is about f the strength of plates fixed. 

 Plates riveted or bolted around the edges may be considered as fixed. 



For a diagram giving the safe loads on flat plates, see the author's " The Design of Walls, 

 Bins and Grain Elevators," also see Part II. 



Buckle Plates. Buckle plates are made by "dishing" flat plates as in Table 59, Part II. 

 The width of the buckle W, or length L, varies from 2 ft. 6 in. to 5 ft. 6 in. The buckles may be 

 turned with the greater dimension in either direction of the plate. Several buckles may be. put 



- l*6ranolHh!c 

 --2? Concrete 

 -Mre 



>5 Cms Section of ^ 

 doff. Chord, 



IT 



-6alv.Corr.Steel ' 



Detail showing method of fastening 

 Concrete lining to bunker pttte 



FIG. 15. 



Crois Section of Bunker House 



On line 'A- A' 

 Note:~5tre3in given in thousands of pounds 



COAL BUNKERS, RAPID TRANSIT SUBWAY, NEW YORK, N. Y. 



in one plate, all of which must be the same size and symmetrically placed. Buckle plates are 

 made \ in., ^ in., f in. and -j^ in. in thickness. Buckle plates should be firmly bolted or riveted 

 around the edges with a maximum spacing of 6 in., and should be supported transversely between 

 the buckles. The process of buckling distorts the plate and an extra width should be ordered and 

 the plate should be trimmed after the process is complete. 



