Jansen Inc 6/10/2019 - Laserfiche WebLink

I 1 1. Determine the arithmetic mean, Xm, for compaction of the lot: I 2 3 X,,, = >X n 4 5 Where: 6 x = individual compaction test values for each sublot in the lot. 7 Zx = summation of individual compaction test values 8 n = total number test values 9 10 2. Compute the sample standard deviation, "S", for each constituent: 11 2 ' z nLx —(Lx) 12 S = n(n-1) I 13 14 Where: 15 Zx2= summation of the squares of individual compaction test values 16 (Zx)2 = summation of the individual compaction test values squared 17 18 3. Compute the lower quality index (QL): 19 20 X —LSL L S 21 22 Where: 23 LSL = 92.0 1 24 25 4. Determine PL (the percent within the lower Specification limit which corresponds to 26 a given QL) from Table 1. For negative values of QL, PL is equal to 100 minus the 27 table PL. If the value of QL does not correspond exactly to a figure in the table, use 28 the next higher value. 29 30 5. Determine the quality level (the total percent within Specification limits): 31 32 Quality Level = PL 33 34 6. Using the quality level from step 5, determine the composite pay factor (CPF) from 35 Table 2. 36I 37 7. If the CPF determined from step 6 is 1.00 or greater: use that CPF for the 38 compaction lot; however, the maximum HMA compaction CPF using an LSL = 39 92.0 shall be 1.05. 111 40 41 8. If the CPF from step 6 is not 1.00 or greater: repeat steps 3 through 6 using an 42 LSL = 91.5. The value thus determined shall be the HMA compaction CPF for that 43 lot; however, the maximum HMA compaction CPF using an LSL = 91.5 shall be 44 1.00. 45 I City of Everett Page AM-4 Amendments Everett Downtown Streetscape Improvement March 22, 2019