298 TOWERS AND TANK'S FOR WATER-WORKS. 



information as to what does constitute a proper pra :ticc is un- 

 doubtedly largely responsible for this condition of jtffairs. 



From the theories and suggestions preceding, the following 

 represents in a general form 



SPECIFICATIONS FOR A STRUCTURAL STEEL 

 WATER-TOWER. 



GENERAL DESCRIPTION. 



The structure will be located The 



reservoir shall be a cylindrical shell feet in diameter and 



feet high, to be constructed of steel plate, riveted together, 



with joints breaking vertically. 



The supporting tower must have a vertical height from cap- 

 stone to circular girder of feet, and shall consist of (No.) 



steel supporting columns, divided into (No.) stories 



or panels; each panel shall include horizontal struts and diagonal 

 tension rods. 



Columns shall be straight throughout, and incline from the 



vertical feet in feet (or column sections shall be 



straight between panel-points, representing chords of a circle to 



radius of feet. Located tangent to the vertical lines of the 



tank, and upon the arc of the circle, substantial junctions shall 

 connect columns; horizontal struts and diagonals). 



Along one of the columns there shall be securely riveted at 

 appropriate intervals a substantial steel ladder, extending from 



a point feet above the capstone to opening in the balcony 



floor. 



Each column shall terminate in a suitable pedestal and shall 



be supported upon a (character of stone) capstone, 



to be properly bedded in cement mortar upon a substantial con- 

 crete for masonry) pier. Anchorage must be 



provided. 



