=====+===========================================================+====+======+====== | | |Effec-| | Height of Chimneys and Commercial Horsepower Capacity |Side| tive |Actual Diam-+---+---+---+-----+-----+-----+-----+-----+-----+-----+-----+ of | Area | Area eter |50 |60 |70 | 80 | 90 | 100 | 110 | 125 | 150 | 175 | 200 | Sq.|Square|Square In. |Ft.|Ft.|Ft.| Ft. | Ft. | Ft. | Ft. | Ft. | Ft. | Ft. | Ft. | In.| Ft. | Ft. -----+---+---+---+-----+-----+-----+-----+-----+-----+-----+-----+----+------+------ 18 | 23| 25| 27| | | | | | | | | 16| .97| 1.77 21 | 35| 38| 41| | | | | | | | | 19| 1.47| 2.41 24 | 49| 54| 58| 62| | | | | | | | 22| 2.08| 3.14 27 | 65| 72| 78| 83| 87| | | | | | | 24| 2.78| 3.98 30 | 84| 92|100| 107| 113| 119| | | | | | 27| 3.58| 4.91 33 |105|115|125| 133| 141| 149| | | | | | 30| 4.48| 5.94 36 |128|141|152| 163| 173| 182| 191| | | | | 32| 5.47| 7.07 39 |154|168|183| 196| 208| 219| 229| | | | | 35| 6.57| 8.30 42 |182|200|216| 231| 245| 258| 271| 288| | | | 38| 7.76| 9.62 48 | |269|290| 311| 330| 348| 365| 389| | | | 43| 10.44| 12.57 54 | |348|376| 402| 427| 449| 472| 503| 551| | | 48| 13.51| 15.90 60 | |436|471| 503| 536| 565| 593| 632| 692| 748| | 54| 16.98| 19.64 66 | | |579| 620| 658| 694| 728| 776| 849| 918| 981| 59| 20.83| 23.76 72 | | |698| 746| 792| 835| 876| 934|1,023|1,105|1,181| 64| 25.08| 28.27 78 | | | | 885| 949| 990|1,038|1,107|1,212|1,310|1,400| 70| 29.73| 33.18 84 | | | |1,035|1,098|1,157|1,214|1,294|1,418|1,531|1,637| 75| 34.76| 38.48 90 | | | | |1,269|1,338|1,403|1,496|1,639|1,770|1,893| 80| 40.19| 44.18 96 | | | | | |1,532|1,606|1,712|1,876|2,027|2,167| 86| 46.01| 50.27 100 | | | | | | |1,760|1,865|2,043|2,197|2,359| 89| 50.11| 54.54 104 | | | | | | |1,899|2,024|2,218|2,395|2,560| 93| 54.39| 59.00 108 | | | | | | |2,051|2,190|2,399|2,591|2,770| 96| 58.83| 63.62 112 | | | | | | | |2,323|2,588|2,795|2,983| 100| 63.46| 68.42 118 | | | | | | | |2,632|2,883|3,114|3,339| 105| 70.71| 75.94 120 | | | | | | | |2,725|2,986|3,225|3,447| 107| 73.22| 78.54 124 | | | | | | | |2,915|3,193|3,449|3,687| 110| 78.31| 83.86 130 | | | | | | | |3,165|3,467|3,745|4,004| 116| 85.04| 90.76