A piece of copper pipe is soldered to another pipe with a fitting. The copper pipe has an external diameter of in., the thickness is 0.050 in., and the fitting has an internal diameter of f in. plus...

A piece of copper pipe is soldered to another pipe with a fitting. The copper pipe has an external diameter of in., the thickness is 0.050 in., and the fitting has an internal diameter of f in. plus 0.015 in. If the copper pipe has a tensile strength of 50,000 psi and the solder has a shear strength of 4000 psi, what would be the length of lap to prevent failure in the soldered joint? (0.56 in.)