// Duct Pressure Loss Imperial Units

function DuctPressureLossImp(q, d){
	this.q = q; 
	this.d = d;
}

DuctPressureLossImp.prototype.pressureLoss = function(){
	var pl = 0.109136*Math.pow(this.q,1.9)/Math.pow(this.d,5.02);
	return pl;
}

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