.DARE GRATE. A5 ON PLATE HI 



FIG 



■STONE WORK 

 THU,5 EXP03tD,T0 

 BE COMSTR.UCTED 

 OF FIRE-RESISTANT 



STANDARD GRATE f 



LOOSE ROCKS 



Fig. 5 



lO GA. 5 I WELDED 

 TO 5IDE3 6-END 

 OF FCAME OF GRATE 



STANDARD GRATEA& ON PLATE ' 



FIG. 5 



S SIDE SHOWS 

 STONE SHOULDERS 

 CONCEALING FIRE 

 BRICK ENDS 



.4^, 



■i- lO GA IG X28" 

 5 I PLATES 

 REMOVABLE 



5TONE 



Fig. 7 FAC1U& -- 



lO u,A SI WELDED 

 TO SIDES &- END 

 OF FR.AME OF GRATE 



FlG-2 



REPIACE VARIATIONS 



Fig4 



SIDES AND BACK C 



e" THICK CURB STONES 



SET INTO GROUND 12 



TO 16" AND WITH A CLEARANCE I 



OF &• TO ID" AROUND GRATE 



28" 5 I PU\TE 



DRY STONE WALL 

 SET WITH 6'TO lO - 

 F I G & CLEARANCE AROUND GRATE> 



Z-IO GA.30"X30'PLOTE5,REMOVABLE- 



u- "^^ 



BATTERY OF 



5 -STANDARD GRATES 



AS ON PLATE m 



PLATE III A 



31 



