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HomeMy WebLinkAboutCT 02-16; ROBERTSON RANCH EAST VILLAGE; REVIEW OF R-VALUE DATA; 2007-09-04/ - - Co ! GIoSoILc,I$c© Geotechnicat Geologic'. Environmental 5741 Palmer Way • Carlsbad California 92008 • (760)438-3155 • FAX(760)931-0915 MEMORANDUM DATE September 4,'2007' 0 5354-E-SC FESSIolv TO Calavera Hill %i b(Ihllin Communities rn No GE2320 FROM /obert CrI44 okgust,Andyia iir# gineer Enginaering SUBJECT Review of\ b,)1ovement (Widening oulevard (Stations 103 tiOWtI d Cannon Road (Stations 59), City of Carlsbad,San , ounty, California References: 1. "Revised Pavement Design Report, College Boulevard Stations 7842 to 101 , Reach C, Calavera Hills II, Carlsbad, San Diego County, California," W.O. 4028-E-SC, dated April 19, 20041' by GeoSoils, Inc. 2. "Rvised Pavement Design Report, College Boulevard Stations 101 to Reach'B, Calavera Hills II,. Carlsbad, San' Diego County, California," W.O. 4029-E-SC, dated April 23, 2004, by GeoSoils, Inc.- -3. "Third Revision of Páve'meht Design Report, Calavera Hills II, Cannon Road Stations 125 to 164 City of Carlsbad San Diego County California W.0.4030-E- SC dated May 14 2004 by GeoSoils Inc In accordance with your request and at the direction of the City, GeoSoils, Inc (GSl) has sampled pavement subgrade in preparation of the widening of College Boulevard and Cannon Road at the subject site. . . . .. .. . .' . . . • R-values were obtained in preparation of the initial phasb of paving in 2004 (see Reference Nos 1, 2 and 3 also attached in the Appendix), then again An 2007 (current phase of improvement), in preparationl of street widening. R-value testing was performed. 'in accordance With California Test Method (CTM) 301. The data collected is presented in the following table for review:. .. . . • '. I 4 V SUBGRADE suBGRAbE: V / TRAFFIC AREA fl-VALUE (2004) R-VALUE (2007) TRAFFIC AREA 44 (Teste?d 2004) 4 see References ThisStidy (Tested 2007) Cannon Road 28 12 Cannon Road (so. side) Stations 125+LO to 130+L0 Stations 1 27 to 13O Cannon Road 28 68 Cannon Road (no. side) Stations 125 to 130 Stations 128 to 131 +00 Cannon Road 27 25 Cannon Road (so. side) Stations 130+L0 to 135+§2 Stations 130+22 to 135+22 Cannon Road 27 5* Cannon Road (no. side) Stations 130 to 135 Stations 131 +00 to 136 Cannon Road 6 5 Cannon Road (so. side) Stations 135 to 140 Stations 135+22 to 140 Cannon Road 6 25 Cannon Road (no. side) Stations 135 to 140 Stations 136+§2 to 137 Cannon Road 6 6 Cannon Road (no. side) Stations 135 to 1 4O Stations 137 to 1 42 Cannon Road 5 11 Cannon Road (so. side) Stations 140- to 145 Stations 140 to 145 Cannon Road 5 7 Cannon Road (no. side) Stations 140 to 145 Stations 142 to 148 Cannon Road 6 5 Cannon Road (so. side) Stations 145+§2 to 150 Stations 145 to 150 Cannon Road 6 8 Cannon Road (no. side) Stations 145 to 150 Stations 148 to 153 Cannon Road 6 5 Cannon Road (so. side) Stations 150 to 164+N Stations 150 to 155+22 Cannon Road 6 8 Cannon Road (so. side) Stations 150 to 164+22 Stations 155 to 159+22 College Blvd. 17 23 College Blvd.(so. side) Stations iOi to 106+§2 Stations 103 to 108 College Blvd. 13 22 College Blvd.(so. side) Stations 106 to 111+00 Stations 108 to 112 College Blvd. 13 14 College Blvd. (no. side) Stations 1 OWN to 111+00 Stations 106 to 111 +15 College Blvd. 26 22 College Blvd. (so. side) Stations 111 +00 to 114 Stations 112 to 115 College Blvd. 21 5* College Blvd. (no. side) Stations 114 to 11 WE IL -- Stations 111 +15 to 116 * Structural section to consist of 6 inches asphaltic concrete over 20 inches aggregate base.:::::::] Calavera Hills II, LLC W.O. 5354-E-SC College & Cannon, Carlsbad September 4, 2007 File:e;\wp9\5300\5354e.ror.memo Page 2