b"CONVENTIONPREVIEWQ&A CONTINUED FROM PREVIOUS PAGECONTINUED FROM PAGE3 Materials CASTM) described the two terms in the D1079, Standard Terminology Relating to Roofing, Waterproofing and Bituminous Materials: Re-covering is the process of covering an existing system with a new roofing system. Replacement is the process of removing an existing roof and replacing it with a new roofing system. Q.What is meant by the kerosene number or value? A.The kerosene value is determined by ASTM D727, Test Method for Kerosene Number of Roofing andby Flooring Feltthe Vacuum Method. Kerosene value is a measure of a raw or desaturated felt's ability to absorb kerosene leader to internalize the process. Behavioristsunder a vacuum test method. The saturating tell us that 25-30 repetitions of something arecapacity of the felt is based on the kerosene necessary for a habit to develop. Sounds likevalue and specific gravity of the bituminous satabout six months of management focus to me,urant. The saturation efficiency is the percent and that's about what it takes.of saturant in the felt compared to the saturation capacity and is used in the industry as a PLANNINGYIELDSIMPROVEMENTcriteria for manufactured roofing felts. job site planTrack results from jobs as your ning progresses. My bet is you will see many improvements in emergency calls, last-minute material purchases, equipment conflicts, and yes, gross margin. Make sure all this is communicated to your field leaders. Celebrate a little-you've just changed a small but significant part of your organization's culture. Oh, one other thing. As your field leaders become better at this planning, they are going to have increased expectations regarding the planning that goes on in the office. Before they start asking embarrassing questions, you may want to review the planning that goes on before the job begins - pre-job planning. What's good for the goose, you know. Ed. Note: Bob Leibforthisa senior consultant for FM/, management consultants to the construction industry. As part of&ProductivFM/'s Quality ityBob specializes inimImprovement Group, proving processes that benefit the customer both directlyindirectly. He also works with and clients to improve their field productivity improvementprocesses.For more information, Bob can be reached in FM/'s Tampa, Fla.office 813/875-4199. at 5"