A Guarantee "Steelcrete" Mesh lies in the plane of tension designed for it. This is not so in the long 



of Safety roll of reinforcement. The long roll does not offer the guarantee of placing the reinforcement 



exactly as required. While cross-wires *may space it correctly in a horizontal plane, the un- 

 rolled fabric, however, has a wavy or warped form in practice, offering an element of uncertainty 

 as regards its position in a vertical plane. If in a common slab, with an effective depth of only 

 three or four inches the reinforcement, because of its form, becomes displaced a half inch in ver- 

 tical direction, the strength of the slab becomes greatly impaired. THE FACT THAT IT TESTS 

 WELL PROVES LITTLE. THE PLACING IS THEN UNDER EXPERT SUPERVISION. 

 In practice, however, the placing is left to unskilled labor. The position of the reinforcement 

 in a vertical position is obviously of far greater importance than in a horizontal direction. 



A reinforcement that does not rest absolutely flat, but curves vertically even to a slight extent, 

 cannot prove effective until it has stretched tight. This necessitates a slipping in the concrete, 

 and a breaking of the bond in the readjustment of the steel. The detriment to the slab is ob- 

 vious. This is all avoided by the use of "Steelcrete" Mesh. The correct position of the steel 

 is assured, both vertically and horizontally. No slipping in the concrete is necessary for initial 

 tension. Unskilled labor gives satisfaction in placing. The architect or engineer is relieved of 

 anxiety over an uncertain problem, while the contractor is freed from the responsibility of a 

 matter he feels should be beyond his sphere. 



THE LAP. 



Flat sheet reinforcement requires the lapping of adjoining sheets in order to cover a large 

 area, under some forms of construction necessitating a uniform cross-section throughout. Un- 

 less otherwise stated, the proper lap of two sheets is eight inches or one diamond, and may be 

 mads at the center of the span as well as any other place it may occur. The strength of the bond 

 is sufficient then to transfer the full strength of the steel. This has been demonstrated repeat- 

 edly wherever "Steelcrete" Mesh has been used. 



The following points should be noted about the strength of a lap. Reinforcing steel, if 



lapped 50 times its diameter, develops the full strength of the steel with a factor of safety of 3. 



Figured under this formula, a lap of one diamond offers ample strength for this purpose. To 



further emphasize this fact, the following tests were recently made under our direction to dispel 



any doubt that may exist: 



to 



