Document LoE16vrq1XakpVzaJnaGxJba7

T able 1. Circular Equivalents of Rectangular D ucts for E qual F riction* American Society of Heating and Ventilating Engineers Guide, 1934 OO O' O PtP'ifOtO rs -h 10 cm r> to fOfOf*><*> fONO noxoto io*Ot>.t-- od 00 oi d oviortai d -- p>i p o* cm <0 't >/> O <NNN copi-m N'OOO' O p4Pptto o*o-f OMN<n p*p** o p< co -f -- 'cm 00 oom/iia <AK(^co aoinn tot3>t*>t> <o*oto3> ionv? ,o^^ 'O'O^n oo*cn *0^1*0 'QNeeo> 00N <SWN NNMM eico<^o f) t*) to to v><OON mmnn ooeoo!ol nramm oo Qgoi^m mob no IN NNNf -- * O' 0 010 T> ONON IONQiP. 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NNMIO to *0 >0 >0 0*004 *2*^00O* OQIAttO 0*0 -- -- 04 OO to CO <0 00 04 0-- 04<OO4 04 04 td rd 3 3> >0 *0 d d pC pi 4 04 04 04 04 O 4 04 04 04 p 00 04*0 0 t-- 00 aO o* *"! 2 2 2 22 -- ------_ 04 04 0*0 tn "2 *d "2 * p^ od O* O* -- ^4 ^4 -- -- -- -- -- -- CM CM 04 0- 040- -- VO -- *n O'tor- -- */>.c-)P ddctts d d -d d d d *o d d p* 04 04 04 04 04 04 04 04 04 0* ~ ~ --04--04-04 04 0*0 OiflftM --12 -- -- -- -- 00 0400 4|CO *2 *o -d <o *oddd -------- *0 -- < ^0x0 ododo*o* do -- -- -- 04 0404 04 O-fOOPI pi cm pi d 04 04 04 04 04n dddd 04 04 04 04 04 04 040 I t 00 <-} P* -viogo OOO -- --CMPt ft) tod ^ <2^00 4; 0*0010) -! d d d pi pi 0O CO O^tOOtO OtHWQ, 04<OOil4 dddo d d d d 04 CM CM tq 40-C4 04 O *0 O to 4 dddM 04 04 04 04 OOPJOOPt 400*0*0 P- --* Ok O------ MOO *PtOO-f> CM CM to t!o2 to ^t** -*} *0o -- O'-P > to KdC*OdON NXSO M* 00 -- ^1 OO -- to OO X41-0 *-- od CO O* 0*0*0 0 ddd CM OM CM ro -- -- -- -- <Ht*NN 0404 04 04 04 04 04 04 ^ "I eoooo*o* 000-4 <-- CM e tO 00 04 * --4 -tfOQPti -P t- CM O' CM 4 t- O (4 -- 2* 2* -- -- !2 dedodo* o*o*o*o d d d d 'OO^W 04*0^04 */> -- *0 -- 0-4 too* tor- -- 4>Nt- 4ft- OO) <0 0*04 4 t--O*CQO0 O* O* O* O OO -- -- -- CM CM to ------"s->-o -<e--*r*t* * 0 00 00 O* 0*0* Atot-O OOt-004 IO OO O to *004-00 04-00*04 *0 0*0*0 OO -- 4- *- O* -- to >0 00 O * *0 *0 r- t-- CO 0000000* 9*0*00 O ---- -- CM CM CM to to to 4- 4- dddd dddd d d d pi 4- *0 O* CM 41*0 0*--* 0 OO OO O *0P-O4> 000t0*0 CM u-> r- O to to tO A O O O --- --- -- -- 04 04 04 to to to to O* --< *0 *0 t-O -- to to 4 4- 4* 4- *0 v) *0 h5& 8 55 3 ?Q 000*0-- 04 to 4- *0 ONCOO* OOJCmM SCM SCM 2CM 2to --0 2to 2<02*02424! 24 4242V) oV4)v4)*<*o0o*0o o*0n0m00 264 Additional sizes: 4 X 5 T able 1. Circular Equivalents of Rectangular D ucts for Equal F riction-- (Continued) Chapter 19--Air Duct Design 61.3 62.6 92 74.1 77.1 81.4 85.6 89.5 93.2 96.7 9 9 .0 6 2 .1 63.5 94 74.8 77.8 82.2 8 6 .5 9 0 .4 9 4 .2 9 7 .8 100.1 63.0 64.5 96 75.5 78.7 83.0 87.4 91.3 95.2 98.8 101.2. 58.5 59.7 86 71.7 74.6 78.9 82.9 86.6 90.2 93.5 59.4 60.6 88 72.5 75.5 79.8 8 3 .9 87.5 91.2 94.6 96.8 60.4 61.6 90 73.3 76.3 80.6 84.7 88.5 92.2 95.7 97.9 79.9 83.6 86.9 80.9 84.6 88.0 81.9 85.6 89.1 92.4 0OO0 40000 CM 6 8 .4 ' 7 1 .2 ' 75.2 78.9 8 2 .5 85.8 77.9 | 81.4 8 0 .3 7 6 .9 65.9 68.5 72.3 75.9 79.2 | 7 0 .3 1 73.7 71.3 74.8 i 7 2 .6 36 33.7 36.1 62.7 $ o *o V) OV) at 3 1 D E1, "8 W 00 *o 3 CM 4O 4* 0to0 *o to to# 04 to oto 0CM0 5Q 52 5 5 .0 56. i 3 5 .9 3 6 .7 37.6 | 3 8 .5 3 9 .3 4 0 .0 4 0 .8 4 1 .6 4 2 .4 69.2 72.1 70.1 73.0 70.9 73.8 S' OV)t 6 0 .5 6 1 .6 O -- 04 to s N CO O' <o <o *2 S *3 oo o* o M) 6 1 .3 6 2 .2 6 3 .2 64.1 66.6 6 5 .0 ! 67.6 6 6 .8 6 9 .4 1 73.3 6 7 .6 7 0 .3 7 4 .2 , , ----o *o r-- oo 54 57.2 80 82 84 **0o 0*n0 (*5S *0i *40**0e OO O CM O C-- P- 4* *C 00 *o oto* 4< *0 C-- 00 to to 4 0 .7 4 1 .7 4 2 .7 ce CM o 4 8 .4 49.5' 50.6 50.5 51.6 4 4 .0 45.1 46.2 CM 4* *0 N CO O' 4- 4* 4- -- CM -- ^ *o *j od 00 0*0 -- P4 4* 4* ^ 0*0 0* -4 >0 *0 4- 4* 4- 4 3 .7 4 4 .8 4 5 .6 4 6 .5 1 47.9 47.5 4 8 .9 ! 48.4 49.9 i 5 1 .6 ! 52.9 54.0 5 0 .4 51.3 5 2 .5 , 53.8 5 5 .0 , 40*v0} -"-I 52.3 53.5 54.8 56.0 O O o* r*-0*o0o *o0o O* OO *n < t-- *0*0*0 -O v) 4 4*0*v0) *>00 ft) CM O t*o0*40< **00 O O' CO CM CM to *o *o IO *0 V) M O CM 10*0*0 -- O O' 40*v0) 0V) CM -- SS5 <* -- -- n od d m IQ in ' O' IO o o*o-iq <o 5 3 .0 54.5 55.9 53.9 55.4 56.8 54.7 56.2 57.6 IO to to *0*0*0 46.2 47.7 47.0 48.5 47.8 49.3 4 3 .8 4 4 .T 4 5 .5 37.1 38.4 39.5 3 8 .0 39.3 40.5 3 9 .0 i 40.3 41.5 1 1 4 1 .2 ' 42.5 42.2 43.5 43.0 44.4 CM to to ItQo OCO to> 4 2 .3 43.1 ' 4 4 .0 0*00*0 ?! S 3 <0 4* -- 4* IO < 4* 4* 4< N IO 4 0 00 *0 4 3 .4 45.1 46.8 48.4 50.0 44.0 45.8 47.5 49.2 50.9 44.7 46.5 48.2 50.0 51.6 4 1 .3 4 2 .1 4 2 .7 3 4 .6 3 5 .3 3 6 .0 3 6 .9 3 7 .8 3 8 .5 3 9 .2 | 4 0 .0 4 0 .7 32 31.7 34.1 34 32.7 35.1 2 8 .6 29.7 30.8 30.7 31.9 3 3 .0 *0o4 ll " g * 00 04 04 to 38 . 40 42 44 46 48 | 1 1 O10*C0 *40" *0 00 0 *0*0*0 n * <o <o *o ao O t< -c *-- *-- 265 45.3 47.2 48.9 50.7 52.2 46.0 47.8 49.5 51.3 52.9 46.5 48.4 50.1 51.9 53.7 55.5 56.9 58.4 56,2 57.7 59.1 57.0 58.7 60.0