Figure 3-15. - BM/MTO comparison worksheet.

estimating staff. After all, who knows your job better than you? Once the MTO is generated, list materials by material type and compare it to the BM. If the BM does not list your material, you must order it. If they do not give you enough, you must get more. And if they gave you too much, you must cancel the extra. The following example should help make this concept clearer.

During your project planning you identified the following materials needed to complete the job:

- 6,850 board feet (BF) of 12 foot 2X4s

- 420 BF of 12 foot 2X6s

- Four 50 lb boxes (BX) of 16 penny nails

- 75 pieces of 5/8 x 4x8 wallboard

Now go back to figure 3-14 and see how much the BM gave you. Using a BM/MTO comparison worksheet (fig. 3-15) you can make this comparison.

We just took one activity and compared what we think we need to what the NCR thinks we need. Did you find all those on the BM? The bill of material line item (BMLI) is the BM number taken from the upper right-hand corner of the BM (GER-110) and the line item number of your material. We found the BM shortchanged us 342 board feet of 2 X 4s and 1 box of nails. They did give us 15 extra pieces of wallboard. Now it is time to correct these oversights.

BM Add-Ons

Add-ons and reorders are two commonly misunderstood terms. A reorder is used to order an already existing BMLI. An add-on is used to order a completely new line item not found on the BM. Reorders use the same BMLI number. Add-ons use a new item number. The easiest way to remember the difference between the two tools is, if your material was lost or damaged in shipment, reorder it. If you just need more, do an add-on. You are the person who makes this step happen. Now that the problems are identified, use the flowchart in figure 3-16 to do the paper work.

The first step is to do add-ons for the material you are short. Figure 3-17 has the blanks filled in for the material not sent but still needed.

Figure 3-16. - Flowchart for add-ons.

Figure 3-17.-Add-on BM.