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Full text of "The Flow Of Gases In Furnaces"

ARCH BRICK WORK

179

FORMULAS AND TABLES FOR ARCH BRICK—Continued
Firebrick Arches; Rise, Length, Radius, for Chord of Unity

No. 1
	No. 2
	No. 3
	No. 4
	No. 5
	No. 6
	No. 7
	No. 8

Rise or Middle Ordinate Decimal of Span or Chord
	Logarithm of Rise or Middle Ordinate
	Rise or Middle Ordinate Inches per 1 Ft Span or Chord
	Arc
	Length of Arc
	Logarithm of Length of Arc
	Radius of Arc
	Logarithm of Radius of Arc

V
	log v
	V
	a, Degrees,
 Minutes and Seconds
	b or c
	log& logc
	r or r'
	logr logr'

0.0703 0.0729 0 0750
	8.84703 8 . 86283 8 . 88081
	ft
 7 8
	32-00-48 33-06-09 34-07-23
	1.01313 1.01410 1 . 01493
	0.00567 0.00608 0 00644
	1.8132 1.7552 1 7042
	0.25846 0.24432 0 23151

0.0755 0.0781 0 0800
	8.87807 8.89279 8 90309
	»
 It
	34-20-50 35-30-42 36-21-42
	1.01513 1.01618 1.01698
	0.00652 0.00697 0 00731
	1.6934 1.6396 1 6025
	0.22875 0.21473 0 20479

0.0807 0 0820
	8.90703
 8 91672
	»
	36-40-23 37-30-00
	1.01728 1.01807
	0.00728 0 00778
	1.5893 1 5555
	0.20120 0 19187

0.0833 0.0850 0.0859 0.0885 0 0900
	8.92082 8.92942 8.93418 8.94714 8 95424
	1
 1& 1*
	37-50-04 38-35-32 38-59-32 40-08-58 40-49-03
	1.01841 1.01916 1.01956 1.02075 1 02146
	0.00742 0.00824 0.00841 0.00892 0 00922
	1.5422 1.5131 1.4982 1.4567 1 4339
	0.18815 0.17986 0.17656 0.16336 0 15652

0.0911 0.0938 0 0950
	8.95974 8.97197
 8 97772
	1*
 11
	41-18-14 42-30-03 43-08-26
	1.02197 1.02329 1.02389
	0.00944 0.00999 0.01025
	1.4177 1.3795 1.3663
	0.15158 0.13973 0.13355

0.0984 0.0990 0 0995
	8.98387 8.99545 8 99763
	1* 1*
	43-39-42 44-47-58 45-00-00
	1.02460 1.02593 1.02617
	0.01055 0.01112 0.01122
	1.3446 1.3121 1.3066
	0.12858 0.11797 0.11613

0 1000
	9 00000
	
	45-14-23
	1.02646
	0.01134
	1.3000
	0.11394

0.1016 0.1042 0 1050
	9.00673 9.01773 9 02119
	1* U
	45-56-36 47-04-35 47-26-20
	1.02731 1.02871 1.02914
	0.01170 0.01229 0.01247
	1.2811 1.2520 1.2430
	0.10760 0.09761 0.09446

0.1068 0.1094 0 1100
	9 . 02845 9.03892 9 04139
	1* 1ft
	48-13-44 49-16-16 49-37-47
	1.03015 1.03162 1 . 03196
	0.01290 0.01352 0.01366
	1.2238 1.1995 1.1914
	0.08771 0.07900 0.07604

0.1120
	9.04914
	1»
	50-30-12
	1.03312
	0.01415
	1.1721
	0.06895