WARMING AND VENTILATING OCCUPIED , BUILDINGS. 



297 



The uuaiber of the pattern of pifje and cap to be used may be deter- 

 mined by the following table : 



Table of wagon-sliaped pipes and caps to he used according to the ihichness of walls and the 



size of rooms. 



Capacity of room. 





o 

 n 



g ft 



Internal dimen- 

 sions. 



Sectional 

 area of flue, 

 A. 



Number of 

 correspond- 

 ing cap. 



Sectional 

 area of cap, 



A'. 



o 





Length. 



Breadth. 





Cubic feet. 

 3,532-4,944 



Ft. In. 

 1. 7, 11-16 

 1. 4, 1-2 

 1. 3, 3-4 

 1. 1, 3-8 

 0. 9, 13-16 



1 



2 

 3 

 4 

 5 



Ft. In. 

 1. 1, 1-4 

 0. 11 



0. 10, 3-16 

 0. 10, 5-8 

 0. 7, 7-8 



Ft. In. 

 0. 8, 1-4 

 0. 8, 1-4 

 0. 8. 1-4 

 0. 8, 1-4 

 0. 7, 1-16 



Sq. in. 

 Ill 

 91 

 85 

 88 

 51 



1 

 2 

 2 

 o 



4 



Sq. in. 

 76 

 59 

 59 

 59 

 31 



1.45 



2,825-3,532 



1.54 



2 825-3,532 



1.43 



2,825-3,532 



1,589-2,119 



1.49 



1.78 









1.54 



10. Second type, pipes made in sections called measures, designed for eJiim- 

 neys which project from the wall against which they are built. — (Fig. 4.) — 



/:: 



These pottery pipes are thin and have a mean height of 1 foot 9 inches. 

 They are made in six numbers, which may be selected by the particulars 

 given in the following table: 



Dimensions of pipes made in the shape of measures and of the corresponding caps to lye used 

 according to the size of the place to he warmed. 



Size of place to be 



Number 

 of pipe. 



Internal dimensions. 



Area of flue. 

 A 



Number 

 of corres- 

 ponding 

 cap. 



Sectional 

 area of pas- 

 sage, 

 A' 



Katio, 

 A 



warmed. 



Length. 



Breadth. 



A' 



Cubic feet. 

 3, 532-4, 944 



1 



2 

 3 

 4 

 5 



6 



Inches. 



11, 13-16 

 9, 13-16 

 9, 13-16 

 8,11-16 

 7,1-2 



6, 5-16 



Inches. 

 9, 13-16 

 8, 11-16 

 6, 5-16 

 7,1-2 

 6, 11-16 



5,1-8 



Sq. inches. 

 116 

 85 

 62 

 65 

 51 



32 



1 



2 

 3 

 3 



4 



Sq. inches. 

 62 

 59 

 44 

 44 

 31 



1.53 



2, 825-3 532 . . 



1.44 



2,119-2,825 



2,119-2,825 



1.42 



1.48 



1,589-2,119 



1.62 









1.50 











