REINFORCED CONCRETE ROUND-HOUSE 



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. Section E-F. &&* 



B 



Sectional Plan A-Q. 



FIG. 187. I-BEAM FIG. 188. HOLES IN ROOF FOR SMOKE JACK. 



COLUMN. 



metal lath and plaster ceiling as shown in Fig. 186. The main girders 

 and the angles which knee-brace them to the columns are like the 

 columns, encased in concrete. There is, therefore, no unprotected 

 structural metal in the round-house. 



The reinforced concrete beams shown in Fig. 186 are of uniform 

 depth, but vary in width and amount of reinforcement with the span 

 and are composed of 1-3-5 Portland cement, gravel concrete. 



The beam reinforcement consists of plain rods attached to the 

 beams as shown in Fig. 186. The roof slabs are composed of cement 

 and washed cinders, and the ceiling slab consists simply of expanded 

 metal wired to the beams and given two coats of cement plaster, the 

 first coat containing enough lime to make it work well under the trowel, 

 and the second coat being a I cement to I sand mortar. 



Part Side Elevation. 



Cross Section. 



"JIG. 189. FORMS FOR REINFORCED CONCRETE ROOF. 



