ta a B ma 2 os) a B 3 Mtl | NI THESIS VOL USSE Ce ee RES Wee eee: F.0. STANG 1918 fh ify 0.18 oa OVERDUE FINES ARE 25¢ PER DAY PER ITEM Return to book drop to remove this checkout from your record. An Investigation of the Ventilation System of the R. BE. Olde Hall of Engineering. A Thesis Submitted to The Paculty of MICHIGAN AGRICULTURAL COLLEGE BY ‘he et FP. O- Stang ee Candidate for the Degree of Bachelor of Science May, 1918 THESIS Bibliography. Vol.tI. Harding & Willard, "Heating & Ventilating," chapter on hot biast heating, including method of measurement of flow of air under low pressure, and design of ducts, both by the velocity and friction pressure loss method, American Society of Heating & Ventilation Engineering. Yol.19, page £02. Discusses methods of taking readings of air flow from a register face. VYol.18 - Report on School Room Ventilation, suggested requirements given as a result of investigation of sondi- tions existing in sehools, Heating and ventilating magazine, Jan., Feb., March, and April issues for 1918, Discussions of teste of ventil- ating systems in several Ohicage schools. These diseussions inelude data taken during the test and conelusions drawn. Intex Introduction------~---~-~---.- wenn nee Concluc fovg-.----.- -2- eee ee. Acknovled™sments ------.- 2. enone Discellanc sug --<e.-- 2 we een eww wee "abuiated Jete wna cen newer emenn ne Photorraphs ---«.---~--.--~-- ee Colihretion evyrrs for sremoneter «-. Fan nerformence CUVEE wane weno FYoundetion plens cf “ne, Filidts __. Pate | Pletee-T rlatee Plsate- ¢ & 3 1. INTRODUCTION. The subject of ventilation is one which has occupied the attention of many engineers, and as yet is not by any means entirely mastered. This statement is quite evident after reading reports of the meetings of the American Soeiety of Heating and Ventilating Engineers. The question as to what system of ventilation is to be employed for a ehurch, assembly hall, theatre, eto., will bring forth as many opinions as to the right and wrong system as there are people in the discussion. It is hardly an exaggeration to say that a small percentage of public buildings are ever properly ventilated. The object of this thesis is to check the distribu- tion of air to the various rooms of the building, and to change the design of the system where necessary by means of baffle plates to meet the requirements, The present building was placed on the foundations of the 014 one destreyed in 1915, and for that reason the same plans were used practically threughout. The inlet to the fan is loeated on the west side of the steam Laboratory, and the incoming air is taken threugh a plenum chamber, and is heated by passing over the coils before it reaches the fan. This system is known in practice as the draw-through Ze arrangement; that is, the fan is installed between the heater and the main dusts. Directly below the basement hallway is the tunnel into which the air is delivered from the fan, At the east end of the building the main tunnel is intercepted by a tunnel at right angles, this second tunnel being necessary, due to the arrange- ment of the rooms on the east end. The inlets to the duets leading to the various rooms are located in the walls of this tunnel, These openings extend back 8 distance of a foot or so, and then turn to the vertical position. The duet is no more than an opening in the brickwork, through which the air is delivered to the rooms. Diffusers are placed at the outlet of the ducts into the rooms, The diffusers consist of vanes set ver- tically in a framework which fits the outlet and radially with respect to a vertical line located sane place back of the outlet. These diffusers tend to spread the air about the room, rather than allow it to flow directly aeress the room as is the ease with an open duct, The scheme used for distributing the air in the assembly room is unique, and worthy of some attention here. Three ducts extend from the tunnel to the second floor level, and enter a chamber over the hallway. This ghamber is noticeable, as the eeiling over the hallway at the west end is lower than at the east end. From this chamber the air enters the assembly room through five outlets, 3e travels in a downward direction beneath the platform at the front of the room, then up the duct in the east wall, and finally thmugh the outlet in thie wall. The inlet to the ducta leading to the assembly room from the tunnel, and the outlet in the east wall are equipped with vanes, the opening and closing of which are controlled by compressed air. The reason for this is apparent, for if the assembly room is not in use, the vanes may be closed, and the air that the fan has to deliver will be greatly lessened, ani what is of most importance, the power required will also be diminished. After considering different schemes of obtaining the results required, it was decided that the easiest way would be to measure the flow of air at the inlet of the ducts, rather than at the outlet; the latter eystem being the one used by the Commission of Ventilation for the City of Chicago in its tests of the ventikating systems of various sehools of that city, but was hardly applicable in the ease of the Engineering Building. The instrument used for measuring the velocity was an anemometer. While it is possible to do a great deal more work with one of these instruments than with some of the other devices on the market, its accuracy is questiona able, and given by most authorities as checking within a probably error of from one to five percent, and velocity 4. limits of fram one to forty feet per sec. The calibration curve for the anemometer used will be found on Plate l., and show the correction to be added to the instrument reading, Knowing the velosity of the air and the area of the duct, the quantity delivered can be obtained by the formula: velocity times area equals quantity. In regard to the amount of air required for ventila- tion, authorities differ, specifying amounts varying fron five hundred to twenty-four hundred cubis - feet of air per hour per person. The quantity most often re- quired by the state laws for such buildings as the one under consideration is eighteen hundred cubic feet per hour per persen, and this was the figure used throughout, except in the case of room 10, where a large portion of the students’ time is used in chemical analysis work, and in this instance a figure of 3000 oubic feet.per hou per person was used. Harding & Willard give 3500. Reference to the data sheets following will show that in many cases the requirement is far exceeded, while in others the quantity necessary is greater than that delivered. It is evident from this that the system is not balanced; and in order to overcame the difficulty, baffle plates shoulda be used to increase the quantity where the required amount is not met, and lessen the volume delivered to others to the amount necessary. In Plate 2 the basement and foot- ing plans of the building are shown, The figures & ongpide the ducts are taken from the log sheeta, and are the quantities of air deliverea when the fan is oper- ating at the highest speed, which is about 150 r.p.m. The tabulated data on the log sheets following ia- elude the complete set of readings for each test, the averaze reading, the quantity delivered, and the quanti- ty required, The readings were taken at five different speeds of the fan, and show a marked variation in some instances at the same speed. Thies illustrates that out- side conditions have an important effect on the efficient working of a ventilating system. This effect will tend to become less as the construction more nearly approaches air tight eonditions, CONCLUSIONS. Some of the conclusions drawn from this test have. been given in a general way in the previous description. Without an attempt to berder on the humorous side of the situation, I would say that it seemed a rare coincidence indeed that the piers used for supports are all situated near a group of ducts, se that the air is deflected in sush a way that one or twe of them receive an excess, while others receive a smaller proportion of air. An attempt was made to locate the duct to room 4135, but as 6. no results were obtained, it was concluded that the passage was blocked up. On the south side of the tunnel and just west of the fan outlet, are two ducts which do not apparently connect up to any room, md in that case they should be closed, because the air pumped into them simply finds its way out again. Referring to Plate 3, these ducts are marked A and B, and the quantity of air delivered is given on sheet No.(9 ), The ducts which are closed or do not register any flow of air are marked on Plate 3 as (sere) eu. ft. The condition in whieh the chamber was left when the work was completed on the building is santhing that should not be overlooked. <A considerable quantity of mortar, broken bricks, and concrete was left, and gave evidenee that the inspector did not use due care in ex- ercising his duty. The presence of dust in the air was very evident by ite being deposited on the polished sur- face of the anemometer box. I would suggest that before any attempt was made to change the quantity of air deli- vered to various rooms, that the quality be improved by cleaning out the useless material now present. It is to be regretted that time does not permit of a continuation of the work to lay out a system of baffles as has been suggested earlier. 7. To conclude, it should be clearly understood that this subject was not taken up with the idea of finding fault, nor were the remarks in the last few paragraphs directed at any particular person. The work was undertaken to gain some knowledge in the ways of ventilation ani means of overcoming existing aiffi- culties. Acknowledgments, This page is devoted to the expression of my in- debtedness to Dean Bissell for his timely suggestions ed adviee; to Mark's "Meehanieal Engineer's Handbook," for the use of air meters and their limite; to Harding & Willard's "Heating & Ventilation"zsand the "Transactions of the Ameri- ean Society of Heating & Ventilating Engineers," for dis~- cussions of ventilating systems ani requirements for good ventilation, . Miscellaneous, the duets te reoms 6-108 and £06 are all very narrow in preportion to their height, and to lessen the error, the lower part of the duet was closed up, leaving a height of abeut seven or eight inches. By this means, the velocity was increased, and the error of reading according- ly decreased, The data given below were obtained under these conditions. Room «Vel. Ft. Area of Cu. Ft. Cu. Ft. Ho. Per Min, Duet, Per Hr. Per Hr. SqFt. Delivered. Required. 6 210 0.425 5370 108 195 0.5 5620 1800 206 195 0.525 6140 3600 fhe curve on Plate 2 shows the relation between the speed of the fan and the volume of air as measured at the inlet of the fan, R. P.M. Fan 90. 10. Room Area Vel. Vel. Vel. Aver. Cor- Cu.Ft. C Ho. Duet Ft./ Vel. rt'd. Per Hr, Oar Re- Sq Ft. Min, quired. 1 6.66 0 0 3600 2 1.418 40 45 115 79 76 6300 1800 et } 103 )1.33 0 0 36000 4 2,24 65 10 100 = # 59 6700 18000 6 3.25 100. 1860 120 110 114 £22200 18000 6 1.6 O 0 1800 7 3.2 90 120 90 97 #«997 18600 18000 9 1.415 60 60 85 67 #60 5100 3600 10 2.79 170 =:200 206 191 209 35000 30000 ll 2.67 145 120 120 136 146 £5400 22000 12 4.0 180 180 206 179 197 47250 £2000 13" } 114 )1.335 230 380 270 245 259 20800 3600 sus 1.416 110 265 230 179 196 16600 14400 sis 1.5 130 220 90 170 186 16700 33, J0o 11 Room Area Vel. Vel. Vel. Aver. Gor~ Cu.Ft. Gu.Ft. No. Duct Ft./ Vel, rt'd. Per Hr, / Hr.Re- SqoFt. Mine _ pirst Floor - quired. 101-) 201 )1.5 110 198 160 136 146 13150 3600 208} 1,416 2 ‘ 20 135 120 134 144 12200 2700 104 1.375 0 0 1800 105 2.84 80 10 70 62 58 9500) 86000 105 1.46 0 0 107 3.33 95 140 140 105 107 21400 75800 108 1.6 Oo 0 1800 109 4.0 75 110 110 101 101 24200 18000 110 L 0.84 140 170 130 138 141 7100 18000 110R 1.41 20 80 50 60 40 4840 18000 111 5.0 70 140 180 112 115 34500 111 7.0 680 90 80 70 63 25500 ) 434000 111 7.17 100 130 180 121 127 6546500 11/4. 500 115 4.0 0 0 25200 115 2.84 175 320 180 231 247 42000 36000 fotal for 102-202 »« 5400 required, 27650 delivered. 12. Room Area Vel. Vel. Vel. Zver. Cor- CuFt. Cu.Ft. Bo. Duct. M./ Vel. rt'd. Per Er. / Hr.Re- Sq.Ft. Min. quired. - Second Floor, - 202 1.58 120 185 195 150 163 15450 2700 208 2.92 120 120 130 142 # 153 £6800 69400 204 2.84 650 10 75 £44 35 5970) 10800 204 3.02 20 § 30 26 205 3.4 105 140 115 111 #=*115 25400 45000 £206 1.625 0 0 3600 £07 4.0 90 110 105 106 = 108 21600 52200 208 6,0 60 140 130 100 #100 30000 36000 £09 2.75 150 260 140 169 #4184 30400 1800 210 2.75 180 316 200 219 £=«237 39000 £55750 13 Room Area Vel. Vel. Yel. Aver. Cor- Gu.Ft. Cu. Ft. No. Duct Ft./ Vel. rt'd,. Per Hr, / Hr.Re- Sq Ft, Min, quired. - Pfhird Fleer. - SOl 2.67 140 805 160 171 187 29900 69400 302 £,.84 0 0 59400 303 £.62 65 80 65 62 +£«1\563 8350 45000 304 5.25 100 105 130 165 180 365100 59400 $05 1.88 0 O 1800 306 3.38 40 60 80 62 #£«©458 12400 50400 308 2£.84 160 180 120141 162 28900 45000 309 4.0 180 240 170187 2805 49250 37800 $10 1.415 110 140 .130 182 140 11900 8600 11 2.75 115 190 185164 1979 29500 57800 311 £2.92 130 220 170160 175 sosoa} 60,/00 14. Room Area Vel. Vel. Vel. Aver. Cor- Ou.Ft. Cu. Ft. No. Dust. Ft./ Vel, rt'd. Per Hr. / Hr.Re- Gq Pt. Mine _ pourth Floor - quired. 401 2.0 220 260 255 231. 247 29600 36000 402 1.83 170 180 160 160 178 19200 36000 403 2.0 75 120 110 95 98 11400 19800 408 3.4 110 145 135 127 135 £7800 86000 406 1.33 ©O 0 1800 407 3.33 90 125 95 106 108 25900 89400 409 2.84 145 130 140 189 150 28600 5400 410 4.0 125 200 170 18¥ 171 41000 48000 411 1.415 0 0 1800 412 2.67 140 280 220 185 203 82500) 45000 412 3.0 110 175 155 180 139 25000) 413 Refer to Page ( ) above. °° — 1800 4144 2.08 130 180 70 117 «122 16200 3600 15. RPM. Fan.lll, Room Area Vel. Vel. Vel. Aver. Cor- Ou.Ft,. Cu. Ft. No. Duct Ft./ Vel. rt'd. Per Ur. Per Hr. Sq Ft. Min. . Required, 1 0.66 0 0 3600 2 1.415 1650 160 170 166 #£=°181 15400 1800 g~ {1.88 0 0 36000 103 4 2.24 170 140 190 168 #=£180 £4200 18000 6 3.258 160 200 185 174 #+7£;§190 37000 18000 6 1.58 0 0 18000 7 3,2 80 100 QO 79 76 13900 18000 9 1.415 105 90 128 110 £=#114 9450 3600 10 2.79 230 250 180 225 $241 40500 30000 11 2.67. 880 240 170 239 #£«x%254 40500 22000 12 4,0 £15 230 300 244 258 62000 £2000 12~} 114 J1.5358 380 330 390 S869 372 29800 $600 k4~- ) 312 )1.4158 330 190 320 280 # 290 24600 14400 14- 313) 1.5 £280 190 280 255 268 24100) 78, 700 16. Room Area Vel. Vel. Vel. Aver. Cor- Cu.Ft. Ou. Ft. No. ..Dust Ft, | . Vel. rt'd. Per Hr. Per Hr. Sq.Ft. Min. Required, - First Floor.- 101-} 1.5 145 245 255 2806 224 20200 3600 02) 1.415 160 170 190 177 194 16500 2700 z 104 1.375 0 0 1800 105 2.84 115 90 126 109 111 #4«1.18900) 86000 105 1.46 0 0 107 3.33 180 170 220 181 198 39800 785500 108 #165 £O 0 1800 109 40 100 110 50 90 #=389 += 21400 1800 110 L 0.84 195 165 185 1712 187 9450 1800 110 R 1.41 100 170 135 129 137 11700 1800 111 5.0 180 265 90 166 181 54250 111 7.0 140 110 90 110 114 48000) 434000 111 7.17 215 195 1768 199 218 94000 19 6,2 £0 113 40 0 #0 #7 #47 0 25200 115 2.84 305 £75 310 308 315 53600 36000 Total for 102-202 » 38600 delivered, 5400 required. 17. Room Area Vel «. Vel. Vel. Aver. Cor~ Cu. Ft. Cu. Ft. No. Duct Ft,/ Vel. rt'd. Per Hr. Per Hr. . Sq.Ft. Min. Required, - Secénd Floor. - 202 1,568 200 200 240 215 233 22100 2700 £03 £,92 305 260 280 272 £290 50800 59400 £04 2,84 110 95 130 115 120 20450 10800 204 $8.02 70 =—60 60 66 £2056 3.4 200 155 200 179 196 40000 45000 206 1.625 0 | 0 3600 207 4.0 110 120 110 119 125 30000 582200 208 6,0 190 206 205 200 219 65500 56000 209 2.75 £15 176 225 202 221 36500 1800 £210 2,75 335 200 335 274 285 48600 55760 18. Room Area Vel. Vel. Vel. aver. Cor- Ou.FPt. Cu.Ft. No. Duct Ft./. Vel, rt'd. Per Hr. Per Hr. Sq.Ft. Min, Required. - fhird Floor.- > SOl 2.67 290 250 340 300 308 49200 59400 502 2,84 0 0 59400 $03 2.62 140 96 95 110 4113 #4217800 45000 304 3.25 200 145 160 169 185 36000 59400 $05 1.58 0O 0 1800 306 3.35 120 120 30 102 102 #$‘£.%20400 50400 408 2.84 190 180 130 182 200 34000 45000 309 4.0 218 270 220 214 ##=232 #£+§5500 57800 310 1,416 160 170 180 185 203 £17200 3600 $1l 2.75 140 220 270 214 #232 $=38200 37800 Sll 2.92 245 245 280 252 £65 § 46500 EF 700 19. Room Area Vel. Vel. Vel. Aver. Cor- Ou.FPt. Ou.Ft. No. Duct Ft./ Vel, rt'd. Per.Hr. Per Hr. Sq.Ft. Min. Requi red. ~- Fourth Floor.- 401 2.0 265 280 410 334 339 j$=40600 36000 402 1.83 190 210 2265 204 228 #§$£=28600 $6000 403 2,0 180 140 185 157 #170 #20400 19800 405 5.4 180 180 1958 184 202 $=41200 $6000 406 1.35 0 0 1800 407 3.33 100 108 160 124 130 #4226000 59400 409 2.84 220 165 140 196 218 #$®:$%6600 36600 410 4.0 195 320 270 240 255 61000 45000 411 1.415 0 0 1800 412 2.67 260 310 360 294 # £302 54500 45000 418 3.0 200 240 240 225 242 j§ 38800 413 77.000 1800 414 2.08 225 130 160 182 199 24800 3600 20. RPM. Pan.i29. Reom Area Vel. Vel. Vel. Aver. Gor= - Cu.Ft. Ou.Ft. Bo. Duet FM./ Vel, rt'd. Per Hr. Per Hr. Sq.Ft. Min. Required 1 0.66 0 0 3600 2 1.415 220 1758 210 195 214 18200 1800 Be 103) 1.33 0 0 $6000 4 2.24 186 195 195 192 # £209 28100 18000 5 3.25 220 210 198 214 £4231 465000 18000 6 1.5 0 0 18000 7 Bek 145 170 120 121 £=127 23400 18000 9 1.415 140 120 80 110 114 9700 3600 10 2.79 245 2956 £765 272 + +$%}288 47500 #30000 ll 2.67 275 220 250 269 #280 44800 22000 12 4.0 £235 220 220 225 £e41 51750 22000 13+ 114) 1.335 420 360 410 397 399 $1900 5600 14+ 312) 1.415 265 360 350 332 338 38800) 14400 L4+ | $13) 1.8 250 280 £40 237 #4®&3252 22700 64 500 21. Room Area Vel. Vel. Vel. Aver. GCor- Cu.Ft. Cu.Ft, Ho. Duet. Ft. . Vel. rt'd. Per Hr. Per Hr. Sq.Ft. Mins . : Required. - Fires Fleer. - jun 101+} 1.5 195 230 290 227 248 £21800 ~§ 3600 302+ }2 418 150 150 200 172 188 16000 2700 104 1.375 O 0 1800 105 2,84 130 1835 105 125 132 22500) 86000 105 1.46 90 0 107 3.833 210 225 215 220 237 47400 75500 108 1,5 0 0 1800 109 4.0 120 130 148 125 132 31700 18000 110 L 0,84 110 225 230 199 218 11000 18000 110R 1.41 25 95 90 58 18000 111 5.0 230: 205 245 231 247 74.000 111 7.0 150 188 155 160 174 173000) 434000 111 7,17 245 230 240 247 261 112000 £59,000 118 4.0 Q 0 25200 115 2.84 285 348 360 317 324 ° 58200 36000 Fotal for rooms 102-202 « 38100 delivered. 22. eet Room Area Yel. Vel. Val. Aver. Cor- Cu.Pt. Ou. Pt. No. Dust. M./ Vel, rt'd. Per Hr. Per Hr. Sq Ft. Min, Required. - Second Floor - 202 1.58 170 190 268 216 238 22100 2700 208 2.92 260 285 $10 291 800 52500 59400 204 2.84 185 140 125 129 137 28400) 10800 204 38.02 80 110 90 90 £05 3.4 190 215 205 £06 225 45800 465000 206 1.625 0 0 3600 207 4.0 140 145 175 158 165 89600 652200 208 5.0 185 165 178 180 197 59500 36000 209 2.75 225 220 205 210 228 37600 1800 210 2.75 275 S60 310 816 S28 53300 55750 23 Room Area Vel, Vel. Vel. Aver, Cor- Ou.Ft. cu. Ft. No. Duct Ft./ Vel. rt'd. Per.Hr. Per Hr. SqFt. Min, Required - Third Floor, - 501 2.67 285 285 310 297 #4305 48800 59400 302 2.84 0 0 69400 30S 2.62 140 135 136 134 144 22600 45000 504 3.25 230 255 205 226 248 47200 59400 305 1.58 0 . 0 1800 306 3.35 120 145 95 106 #£«x®109 21800 50400 508 2.64 198 190 180 169 #207 55300 45000 509 4.0 260 300 295 281 291 70000 $7800 310 1.418 195 190 £15 195 214 18200 $600 $11 2.75 870 270 S25 279 #1®&3289 47600 $7800 Sll 2.92 2896 £90 320 301 509 64000 101 600 24. Room rea Vel. Vel. Vel. Aver. Cor- Cu.Ft. Ou. Ft. Ne. Duct Ft./ Vel. rt'd. Per Hr. Per Hr. Sq.Ft. Min, - Fourth Floor.- Required 401 2.0 300 345 445 357 361 438300 36000 402 1.88 220 ‘225 8385 2825 241 26400 36000 403 2.0 155 165 175 166 180 21600 #19800 405 34 £210 + #$.9210 215 215 233 47500 36000 406 1.33 0 0 1800 407 $2.50 155 165 170 165 179 36800 }# 589400 409 2.84 235 210 300 209 £228 59000 36600 410 4.0 210 210 305 245 259 62100 45000 411 1.415 Q 0 1800 412 2.67 £70 260 260 269 280 44800 45000 412 $,0 £225 £205 200 204 223 40250) — 85.050 413 1800 414 £.08 210 215 170 191 208 26000 $600 25. RP.M.Yaan 142, Room Area Vel. Vel. Vel. Aver. Cor- Cu.Ft. Cu.Ft. No. Duct Ft./ Vel. rt'd. Per Hr. Per.Hr. Sq eFt. Min. Required 2 0.66 0 0 3600 2 1.415 185 210 190 205 224 19050 1800 S- 1,83 0 0 36000 103 4 2.24 230 205 215 £15 £33 31300 18000 5 $225 £40 £36 245 236 251 £49000 18000 6 1.5 10 45 45 £27 0 18000 7 3.2 180 220 155 262 265 50750 18000 9 1.418 115 106 150 128 129 11000 $6000 10 2.79 410 340 340 $10 316 53000 50000 11 £.67 280 280 330 291 299 48000 22000 13 4.0 245 245 250 245 259 62250 22000 13+ 1.5535 480 405 440 439 440 353500 3600 114 144 1.415 395 406 425 409 411 35000 512 14400 £90 270 290 321 327 £29400 313 14s} 1.5 69,900 26. Cu. Ft. Room Area Yel. Yel. Vel. Aver. Cor- Cu. Ft. Jo. Duct Ft./ Vel, rt'a. Per Hr. Per Hr. Sq.Ft. Min. : : | Required. - First Floor.- 101+} 1.5 2858 S10 220 271 282 28400 3600 102+} 1.415 185 210 208 £02 221 1«®2+18800 2700 104 1.375 0 0 1800 105 2,84 155 140 150 144 156 26600} 105 1.46 0 9 3 00° 107 8.33 260 280 260 266 278 55500 75500 108 1.8 20 20 85 2 o 1800 109 4.0 195 138 140 149 161 38600 18000 110L 0.84 245 260 270 246 860 15100 18000 110R 1.41 40 68 120 69 62 5250 18000 111 5,0 860 285 295 272 283 868000 111 7.0 208 210 195 191 809 988000) 434000 111 7.17 290 280 260 277 888 124000 297,000 118 4.0 0 0 26200 115 2.84 365 345 380 3561 365 62260 86000 Total for rooms 102-202 e €2900, 27. Room Area Yel. Vel. Vel. Aver. Cor- Ou.Ft. Ou.Ft. Ho. Duet Ft,/ Vel, rt'd. Per Hr. Per Hr. Sq.Ft. Min. Required. - Second Floor. « 202 1,58 850 255 £20 839 254 #£24100 2700 £035 2,92 345 365 S10 S36 341 #44500 §9400 204 2,84 150 125 155 144 186 #426600 204 3,08 116 90 95 104 106 19200 *0800 205 3.4 225 280 255 227 244 49000 46000 206 1.625 0 0 $600 207 4.0 160 170 195 165 180 43250 52200 £208 5,0 270 200 195 224 241 #72250 36000 209 2,75 205 285 270 244 2688 42600 18000 210 2.75 400 370 405 389 592 #64800 55750 een a ——_ Room Area Vel, Vel. Vel. Aver... Cory Ou.Ft. Cu.Ft. How Dust Ft./ Vel. rt'd, Per Hr. Per Hr. SqFt. Min. . ‘Required ~ Phird Floor.- 301 2.67 860 3860 3885 345 S550 56000 59400 302 2.84 O 0 69400 $03 2.62 155 160 160 156 169 26600 45000 S04 3.25 250 205 220 217 235 26000 59400 305 1.68 O 0 1800 306 3.33 150 140 150 136 46 29200 50400 308 2.84 255 245 205 231 247 42100 45000 509 4.0 315 3820 820 S886 3832 79600 37800 310 1.418 205 200 205 204 223 18900 36000 311 2.75 310 295 £90 806 815 652000) 37800 511 2.92 350 310 345 5826 68250) 110,250 29. Reom Area Vel. Vel. Vel. Aver, Cor- Cu. Ft, Ou. Ft, Ho, Duet Ft, / Vel. rt'd. Per Hr. Per Hr. - §q.Ft. Min. | Required - Fourth Floor.- 401 2.0 405 415 370 417 #+=;%.419 60400 $6000 402 1.88 270 3245 255 262 274 #30000 36000 403 2.0 215 195 800 204 228 #§$£=.26800 19800 405 3.4 215 £60 £220 232 # #248 50500 36000 406 1.35 9O 0 1800 407 3.33 195 190 185 177 193 38600 69400 409 2.84 235 245 226 229 245 41760 36600 410 4.0 240 260 #260 0 45000 411 1.415 0 0 1800 412 £2.67 38330 8305 3835 266 278 #$£=~%(444500 46000 412 3.0 260 2535 270 2655 268 48800 92,700 413 1800 414 £2.08 2855 #$=236 £265 275 287 35800 3600 50. RP MeFan 149, Room Area Vel, Vel. Vel. Aver. Cor- Ou.Ft. Ou. Ft, No. Duct Ft./. ‘Vel. rt'd. Per Hr. Per Hr. Sq.Ft. Min, Required, 1 0.66 0 0 8600 2 1.415 210 230 2890 239 254 20600 1800 3- 103 | 32 Q 0 $6000 4 2,24 235 230 2658 250 3863 56300 18000 6 38.25 £60 225 255 252 265 51750 18000 6 1.8 Refer to note page (9 ). 18000 7 See 125 180 180 159 178 43200 18000 9 1.415 1680 160 160 162 175 14900 3600 10 2.79 375 350 410 382 388 65000 50000 ll 2,67 320 8340 8330 327 333 53300 22000 a2 4.0 £80 £265 305 284 293 70250 £2000 114 12 {1.336 555 545 555 657 555 44500 $600 sin 12 {3.425 426 475 440 447 448 38000 14400 sis" Hs ee 1.5 380 38360 470 3894 396 35600 7 3, 600 31. Aver. Cor- Room Area Vel. Vel. Vel. Cu.Ft. Cu. Ft, No. Dust Ft./ Vel, rt'd. Per Hr, Per Hr. Sq.Ft. Min. Required - First Floor.«- aOit 1.5 £290 270 SOB 276 287 25800 3600 108+ 1.415 255 850 255 249 263 22300 2700 104 1.376 0 0 1800 105 2.84 175 160 180 174 190 $2400 86000 105 1.46 0 107 3.35 275 270 £95 289 298 69500 75500 108 1.5 Refer to note Page (9). 1800 109 43=— 40 130 160 1868 151 164 39400 18000 110L 0.84 285 860 3800 e281 291 14650 18000 11l0R 1.41 90 100 98 698 8300 18000 112 ~=—s« 6,0 340 345 340 341 346 #;:+#104000 Lil 7,0 240 230 205 220 286 99000) 434000 1ll 7.17 345 306 380 331 337 #145000 348000 113 4.0 40 40 35 39 #439 7200 25200 115 42,84 490 510 410 475 475 81000 56000 fotal for rooms 102-202 = 48700 delivered. Room Area Ve ‘Vel. Vel. Aver. Gor- QuFt. Cu. Mt, Ho. Duct Ft. Vel. rt'd. Per Hr. Per Hr. Sq.Ft. Min. | Required. -Second Floor.- | £02 1.58 280 800 3260 867 £278 26400 3600 203 2.98 855 350 385 267 278 48700 69400 £204 2.84 1680 160 140 157 170 829000 | 10800 £04 3.02 120 170 140 141 #188 #&=;27400 3t¥oo 205 3,4 260 240 2820 245 259 + £=™®.§2800 46000 206 1.625 Refer to note Page (9 }. £07 4,0 196 190 220 196 215 #§$f-1500 #£5§2200 208 5.0 220 235 240 e236 251 76300 36000 £09 2.75 300 295 38265 308 j307 #4«®4550600 1800 £10 2.75 470 480 470 486 486 80250 #£4655750 Room Area Vel. Vel. Vel. Aver. Core Cu.Ft, Cu. Ft. Ho. Duct Ft,/ Vel, rt*d, Per Hr. Per Hr. Sqft. Min. ~ Thiré Floor « Required, $01 2.67 410 420 425 417 4.419 67100 59400 502 2.84 0 0 59400 303 2.62 180 215 190 196 215 33800 45000 304 3.25 235 220 240 241 256 #50000 59400 S506 1,58 0 0 1800 S06 3.33 180 160 180 164 179 36800 50400 308 2,84 325 290 256 291 3800 61100 45000 309 4,0 350 335 S60 S37 342 £82000 57800 310 1.415 280 R260 240 251 264 #22400 3600 $11 2.75 320 340 335 331 337 #55600 $11 2,92 400 340 3880 385 £388 se0oo| e780 123,600 Reom Area Vel. Vel. Yel. Aver. Cor- Cu.F. CuFt. No. Duct Ft./ Vel. rt'd Per Hr. Per Hr. | Sqe Ft. Min. | Required. - Fourth Floor - 401 2.0 . 440 -470 465 439 440 652800 36000 402 1.83 270 260 290 274 884 31200 36000 4053 8:0 220 245 250 244 258 31000 #19800 405 3.4 240 240 870 251 264 53800 36000 406 1.33 0 | 0 1800 407 3.33 210 2800 2805 204 223 44500 £59400 409 2.84 280 310 265 285 294 650000 #236600 410 4.0 340 368 310 334 339 81300 485000 411 1.415 0 0 1800 412 2.67 300 400 380 357 361 67750} : 45000 412 3.0 305 260 270 277 287 67600) [15,350 413 1800 414 2.08 260 430 395 362 367 465700 3600 pSES SS ESSOSSSE SEED: ee | , i OL ae Ae eT Ewa / Saeenene $+ 4s } | ye Ror Stier) | sR Ores 125? aa ei =e, BF OBB Lee a ee Be) | 4 ea ‘a : | ae Aimerzcan Syrocen! Fain.) | eo Ss tack ssneed ' | see j akan aan wee ame é er ) BOSS SESESSaSNs | PPOSHS EBC EE BSTUSEES § ; i Fal Ea eT te sans Fee sggn oe ee oO i FEN aut 2 Ly ae vail hsm h-125 dies eae ee t erate oun 6 Olds Half of a i EE pee aur we Wnt ae io 7) VA * ye ale ee ea narod? aed Gmercican Syreocen! Fan) |. anor i) | | eraestes es Test an Ventivatrand. eet Pa Cer alia RE. Olds Hal | BW alc Dab af Vado 0017) Fa OFTt.a 1 fo } | I] on Oyu 49) PIANSVAL SF — ote Ee Ly a ri 9 punisnoy / eee at TE } | eo | Hire Blitae vA?) #40 ’ Ai. Plate No. 3. RPM. Fan 149. 50. Room Area Ve i. Yel. Vel. Aver. Cor- COu.Ft. Ou. Fe e Ho. Dust Ft o/ Vel. rt'd, Per Hr. Per Hr. Sq.Ft. Min, Required, 1 0.66 0 0 3600 2 1.415 210 230 290 239 254 20600 1800 Z~ 103 ‘ 35 0 0 36000 4 2,24 236 230 265 2850 2863 46300 18000 6 3.25 260 225 255 2852 265 51750 18000 6 1.5 Refer to note page (9 ). 18000 7 See 125 180 180 159 178 35200 18000 9 1.415 180 160 150 162 175 14900 3600 10 2.79 375 350 410 382 388 65000 30000 ll 2,67 $20 340 S330 S327 333 53300 22000 12 4,0 280 £65 308 284 293 70250 22000 114 re 1.335 555 $845 6555 6557 555 44500 $600 sis 12 42 415 426 475 440 447 448 $8000 14400 sis. is} 1.5 380 360 470 S894 396 35600 73, 600 31. Room Area Vel. Vel. Vel. Aver. Cor- Cu.Ft. Ou. Ft, No. Dust Ft./ Vel, rt'd. Per Hr. Per Hr. Sq.Ft. Min. Required - Firet Floor,.- toit 1.5 290 270 S05 276 287 25800 5600 208+ 1.415 255 2850 255 249 263 22500 2700 £02 104 1.375 O 0 1800 105 2.84 #175 4160 180 174 190 $2400 86000 105 1.46 0 0 107 3.53 275 £70 2965 289 298 69500 75500 108 «8611.5 Refer to note Page (9). 1800 109 838 40 130 160 155 151 164 59400 18000 110L 0.84 285 860 300 281 291 14650 18000 LOR 1.41 90 100 98 98 8300 18000 lili = & .0 540 345 340 341 346 #104000 lil =7,0 240 230 205 220 286 99000) 434000 lll 7.17 345 305 380 331 337 #145000 348000 1130S 4,0 40 4 35 39 £439 7200 25200 115 42.84 490 510 410 475 475 81000 56000 fotal for rooms 102-202 = 48700 delivered, Reom Area Vel. Vel. Vel. Aver. Gor- Ou.Ft. Gut, Zo. Duct Ft. / Vel. rt'd, Per Hr, Per Hr. SqFt. Min, . Required. “Second Floor.- — £08 1.58 280 3800 860 2867 £278 286400 3600 203 2.92 855 350 385 267 #=&78 +#«=48700 #69400 £04 2.84 1580 160 140 157 #=+.9170 89000 | 10800 204 3.02 120 170 140 141 #158 #3=«*x:287400 3t¥oo 205 3,4 260 240 2820 245 2589 #+£=™.§2800 46000 £206 1.625 Refer to note Page (9 ). 207 4.0 196 190 220 196 215 #$=5§1500 #£=5§2200 208 6.0 220 835 240 #236 251 765300 36000 £09 2.75 300 295 3825 308 $307 #®245§0600 1800 210 2.76 470 480 470 486 486 80250 # 55750 33. Room Area Vel. Vel. Vel. Aver. Cor=- Ou.Ft, CuFt. No. Duct Ft./ Vel, rt'd, Per Hr. Per Hr. Sqeft. Min. ~- Thir& Floor - Required, S$Ol 2.67 410 420 425 417 #4+.419 67100 59400 502 2,84 0 0 59400 503 2.62 180 215 190 196 215 #$=33800 45000 504 3.25 235 220 240 241 256 #®§0000 59400 505 1.58 0 0 1800 506 3.33 180 160 150 164 179 #135800 50400 508 £2.84 325 290 255 291 300 61100 45000 509 4,0 350 335 S60 SSY 342 82000 57800 310 1.415 280 860 240 251 264 # £22400 3600 S$ll 2.75 320 340 335 S81 337 #55600 $11 2.92 400 340 S880 S85 £388 ‘e000 onan 123,600 Reem Area Vel. Vel. Vel. Aver. Core CuFt. Gu, Ft, Ho. Duct Ft./ Vel. rt'd Per Hr. Per Hr. Sq Ft. Min. Required, . Fourth Floor - 401 2,0 440 470 465 439 440 £52800 36000 402 1.83 270 280.290 274 284 £31200 56000 403 8.0 220 245 250 244 258 #31000 19800 405 3.4 240 240 270 251 264 #83800 36000 406 1.35 0 | 0 1800 407 3.33 210 200 2805 204 223 44500 £59400 409 2.84 280 310 265 285 294 #50000 36600 410 4,0 340 365 310 334 #339 #81300 45000 411 1.415 0 0 1800 412 2,67 300 400 360 S57 361 57760} : 45000 412 3.0 305 260 270 277 #«°\:287 #57600) [15,350 413 1800 414 2.08 260 430 395 362 367 £45700 3600 2) se ~ 5: On Oo yy 2) 3 S > 2 Of |PapPy Su) BUMP LOL TEs (7 On, gaa socRs: dug Eng - ; ad at ame ae Hoe | CY f 3. | = Ba - “9ag COTHPEANGE D } iS } Ss oc. bd : Me a 3 fia ’ a) | eerie ase | | ; } NBs . | - | . | } Py 9 | ai ae has ; : ) } eset: | | Bis | ; , | HEUEIRGEY sSfd! (eazeezededeeenel epee gag waveeed (accel eesiazar eh Cs Wetaanee ets | | | bh } | ) g | i | { ; / ) x : : : | 3 | Rabe ; | i i | N ) eases duces swan: : B es een eines k sree; i eanads see se a ) : | Rs : : | ae ee EG | | | | ees! Be. of ib SSeecocacs Sassi isase «S52: | jad es subee ao: i ee | J | t [ K | 1 Birt ° : ! if pee | | | i : a ae : ; | 5 : She 8 hase DERSESESS Se koesaues kneederass & abs sbeseeneds Saduesene phe Sie skaeca es Been } a} ' : e i er EYE) aw ade 1-8 ale ate Ee 4 Pee acral? my, vA?) STA Tha N STA “Tipe