Answer / rethina kumar

generally we use this constant for rod lap (58D) D=diameter of rod ( answer in mm )

while we connecting 20mm rod to 20mm rod lap will be (58x20=1160mm)
connecting 16mm to 16mm lap is (58x16=928)

in this question 16mm rod is laid above 20mm rod , so lap length min 80mm max 928mmm

Answer / as.

When two bars of different dia lapped together, lap length is provided based on lower dia.
Here both both 20 & 16 mm used. So, lap length is based on 16 mm. Normally, we provide lap length 50 times dia of bar. So lap length in this case will be 800 mm.

Answer / shekarpuppala127

80mm

Answer / abid

58(d1=d2)/2=lap legth
58(16+20)/2=1044

Answer / p.vimal raj

20MM DIA ROD LAP LENTH =920MMM....
16MM DIA ROD LAP LENTH =73 MM

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