Barlow’s Formula relates the internal pressure that a pipe can withstand to its dimensions and the strength of its materials. The formula is P=(2*t/D), where: P = pressure

*The Barlow's formula was given by Peter Barlow, a self-educated mathematician for determining the internal pressure a pipe can withstand. It is an mathematical equation that deals with the relationship of internal pressure to allowable stress, nominal thickness and diameter of pipe.*Barlow’s Formula is a calculation used to show the relationship between internal pressure, allowable stress (also known as hoop stress), nominal thickness, and diameter. It is helpful in determining the maximum pressure capacity a pipe can safely withstand. The formula is expressed as P=2St/D, where: P pressure, psig t Barlow’s Formula is a calculation used to show the relationship between internal pressure, allowable stress (also known as hoop stress), nominal thickness, and diameter. It is helpful in determining the maximum pressure capacity a pipe can safely withstand. The formula is expressed as P=2St/D, where: P pressure, psig t HARNACK’S INEQUALITY FOR PARABOLIC DE GIORGI CLASSES IN METRIC SPACES J. KINNUNEN , N. MAROLA, M. MIRANDA JR., AND F. PARONETTO Abstract. In this paper we study problems related to parabolic partial diﬀerential equations in metric Open Pipe Burst Working Pressure Calculator Barlow's Formula. The design of a complex pressure containment system involves much more than the application of Barlow's formula. For almost all pressure vessels , the ASME code stipulates the requirements for design and testing.