Basically phase is an angle of line joining the origin and the any point on the wave with $x$ axis of our reference frame and the word phase is defined for the single wave function. But the phase difference is defined for two waves.
To become a Certified Construction Manager (CCM), you must have a requisite amount of experience and/or education. ONE of the following: An undergraduate (4-year BA/BS level) or graduate qualifying degree. A 2-year undergraduate qualifying degree (AA/AS level) AND 4 years experience in general design/construction.
Learn. Construction Project Manager Course. AGC's Construction Project Manager Course (PMC) provides you and your project managers the chance to hone the skills necessary to work more efficiently, increase productivity and propel your construction business to the next level.