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Home My WebLink AboutCT 02-29; CASA LA COSTA; REVISED PAVEMENT DESIGN FOR CALLE ANDAR; 2004-09-30PACIFIC SOILS ENGINEERING, INC. 7715 CONVOY COURT, SAN DIEGO, CALIFORNIA 92111 TELEPHONE: (858) 560-1713, FAX: (858) 560-0380 TRIMARK PACIFIC HOMES 613 West Valley Parkway, Suite 200 Escondido, CA 92025 • Attention: Mr. Paul Faye September 30, 2004 Work Order 400942 Subject: Revised Pavement Design for Calle Andar (NE) (Stations 20+00 to 22+72), Calle Andar (S) (Stations 10+25 to 17+04), Via his S (Stations 10+40 to 15+45) and Via Rico (Stations 10+72 to 11+90), Villas La Costa, City of Carlsbad, California. References: Pavement Design for Calle Andar (NE) (Stations 2 1+00 to 22+95), Calle Andar (S) (Stations 10+25 to 16+75), Via his (Stations 10+40 to 14+95) and Via Rico (Stations 10+72 to 11+90), Villas La Costa, City of Carlsbad, California by Pacific Soils Engineering, Inc., dated September 20, 2004 (Work Order 400942) Pavement Design for Calle Andar (Stations 20+00 to 21+00), Via Iris (Stations 14+95 to 15+45), Villas La Costa, City of Carlsbad, California, by Pacific Soils Engineering, Inc., dated July 22, 2004 (Work Order 400942) Gentlemen: 0 This report presents Pacific Soils Engineering, Inc.'s (PSE) revised pavement design recommen- dations for Calle Andar (NE) (Stations 20+00 to 22+72), Calle Andar (S) (Stations 10+25 to 17+04), Via Iris (Stations 10+40 to 15+45) and Via Rico (Stations 10+72 to 11+90), at the Villas La Costa project in the City of Carlsbad, California. According to the project plans provided by Hunsaker and Associates, an equation exists at Calle Andar Station 22+72 = Station 17+04. Six (6) representative samples of the subgrade soils were obtained for analyses from the subject areas. Pursuant to a request from the City of Carlsbad, Sample R-6 was obtained from Calle Andar Station 18+50, which corresponds to Calle Andar Station 21+26. Sampling locations and representative areas are presented in Plate 1 (attached). Applicable traffic index and project plans were obtained from Hunsaker and Associates. CORPORATE HEADQUARTERS LOS ANGELES COUNTY RIVERSIDE COUNTY • SOUTH ORANGE COUNTY TEL: (714) 220-0770 TEL: (310) 325-7272 or (323) 775-6771 TEL: (909) 582-0170 TEL: (714) 730-2122 FAX: (714) 220-9589 FAX: (714) 220-9589 FAX: (909) 582-0176 FAX: (714) 730-5191 Work Order 400942 Page 2 September 30, 2004 "R"-value tests were conducted in accordance with Caltrans California Test 301. The sample locations and "R"-value results are summarized on Table I and Plates A through F. • Table I - "R"-Value Test Results Sand • Sample Location (Station) Represents Equivalent Value R-1 Calle Andar Station 20+35 Calle Andar Stations 20+00 to 21+00 12 24 Via Ins Stations 14+95 to 15+45 • Via Iris Stations 10+40 to 14+95 6 12 R-2 VialnsSta.11+00 Via Rico Stations 10+72 to 11+90 R-3 Calle Andar (NE) Station 22+00 Calle Andar Stations 21+00 to 22+72 10 24 R-4 Calle Andar (5) Station 15+50 Calle Andar Stations 13+36 to 17+04 9 25 • R-5 Calle Andar (S) Station 11+50 Calle Andar Stations 10+25 to 13+36 8 23 R-6 Calle Andar (5) Station 18+50 = Calle Andar Stations 21+00 to 22+72 11 26 Station 21+26 The pavement sections presented in Table II are based on California Department of Transporta- tion Highway Design Manual guidelines and are recommended for lOcal streets (T15.0). Table II— Recommended Pavement Sections Design Asphaltic Class 2 Base Station Limits T.I. "R"- Concrete (inch) Value (inch) Calle Andar Stations 20+00 to 2 1+00 Via Iris 5.0 24 4.0 4.0 Stations 14+95 to 15+45 Via Iris Stations l0+40to14+95 50 12 40 60 Via Rico Stations 10+72 to 11+90 - • Calle Andar (NE) Stations 21+00 to 22+72 5.0 24 4.0 4.0 Calle Andar (5) Stations 10+25 to 17+04 5.0. 23 4.0 5.0 Placement of subgrade, base and pavement should be accomplished in accordance with the cur- • rent requirements of the City of Carlsbad and under the observation and testing of the project soil engineer. PACIFIC SOILS ENGINEERING, INC. Work Order 400942 Page 3 September 30, 2004 Utility backfill under the subject streets has been, compacted and tested in accordance with the current requirements of the City of Carlsbad. A grading report encompassing utility backfill ob- servation and testing to the present date at the project site is currently being compiled. As a part of preparation for placement of aggregate base material, the subgrade should be suitably moisture conditioned, processed and compacted to a minimum 95 percent of the laboratory maximum den- sity (ASTM: D 1557) to at least twelve (12) inches subgrade. After subgrade compaction, the exposed grade should then be "proof'-rolled with heavy equipment to ensure the grade does not "pump" and is verified as non-yielding. Aggregate base material should be placed on the com- pacted subgradé and compacted in-place to a minimum 95 percent of the laboratory standard ob- tained by California Test Method 216E (modified). , If you have any questions, please contact the undersigned. (.coFESS A. N . No. 2314 Exp. 6/30/07 J Respectfully submitted PACIFIC SOILS ENGINEERING, INC. By:a,J ANDRES BERNAL, RCE 6366 Project Engineer 'r C62366 & DP OF C 9tE) Reviewed by: Reviewed by: JOH4 A)HANSON, CEG 996--- V 1.~i'sident Dist: (4) Addressee (2) City of Carlsbad, Attn: Tim Fennesy (1) • Hunsaker & Associates,.Attn: Eric Sampson AB/JAC/JAH:bm:400942, September 30, 2004 PACIFIC SOILS ENGINEERING. INC. PACIFIC SOILS ENG., Inc. Pavement Design Data Sheet Specimen A B C moisture content,(%) 15.8 18.3 16.9 dry density,(pcf) 115.91 110.9 112.2 exudation pressure,(psi) 717 240 431 expansion pres., dial rd. 25 R-value by stabilometer r53 : ±j Project: Villas La Costa W.O.: 400942 Sample #: R-1 Approx. Location: Calle Andar Sta. 20+35 Approx. Limits: Calle Andar Sta. 20+00 to 21+00 Via Iris Sta. 14+95 to 15+45 Depth: 0-1.0ft. Exudation Pressure Chart 100 I 90 80 -- 70 40 60 50 _iIIi 1p _ 30 - 20 --- 10 0 200 250 300 350 400 450 500 550 600 650 700 . 750 800 Exudation Pressure (psi) Sand Equivalent Value: 12 R-Value @ 300ps1: 24 PLATE A Exudation Pressure Chart 100 90 80 .70 60 50 40 30 20 10 0 • . 0 50 100 150 200 250 300 350 400 450 500 550 600 Exudation Pressure (psi) -.-..------.-------.-----.-.-.---.- -.-.---- ____ PACIFIC SOILS ENG., Inc. Pavement Design Data Sheet V Project: Villas La Costa W.O.: 400942 Sample #: R-2 Approx. Location: Via Iris Sta. 11+00 Approx. Limits: Via Iris Sta. 10+40 to 14+95 Via Rico Sta. 10+72 to 11+90 Depth: 0-1.0ft. S . Sand Equivalent.Value: 6 S Specimen A B C moisture content,(%) 19.9 22.1 20.3 dry density,(pcf) 105.9 100.4 102.3 exudation pressure,(psi) 429 256 332 expansion pres., dial rd. 57 42 23 R-value by stabilometer 15 tO 13 R-Value @ 300psi: 12 0 PLATE B i. Exudation Pressure Chart 100 90 80 70 60 50 > 40 30 20 10 0 200 250 300 350 400 450 500 550 600 650 700 750 800 Exudation Pressure (psi) PACIFIC SOILS ENG., Inc. Pavement Design Data Sheet Project: Villas La Costa W.O.: 400942 Sampie#: R-3 Approx. Location: Calle Andar (NE) Sta. 22+00 Approx. Limits: Calle Andar (NE) Sta. 21+00 to 22+72 Depth: 0-1.oft. Specimen A B C moisture content,(%) 15.8 18.3 16.9 dry density,(pcf) 115.9 110.9 112.2 exudation pressure,(psi) 717 240 431 expansion pres., dial rd. 25 37 23 R-value by stabilometer 53 19 35 Sand Equivalent Value: 10 R-Value @ 300psi: 24 0 PLATE C I. PACIFIC SOILS ENG., Inc. Pavement Design Data Sheet Project: Villas La Costa 400942 ,. Sample #: R-4 Approx. Location: Calle Andar (S) Sta. 15+50 Approx. Limits: Calle Andar (S) Sta. 13+36 to 17+04 Depth: 0-1.Oft. Specimen A B C moisture content,(%) 19.4 16.7 18.1 dry density,(pcf) 105.1 111.61 106.9 exudation pressure,(psi) 200 311 252 expansion pres., dial id. 12 0 7 R-value by stabilometer 14 1 26 1 21 r 0 Exudation Pressure Chart 100 90' 80 70 60 50 > 40 30 20 10 0 50 100 150 200 250 300 350 400 450 500 550 600 Exudation Pressure (psi) 0 .• . • Sand Equivalent Value: 9 R-Value @ 300psi: 25 PLATE D Exudation Pressure Chart 100 90 80 70 60 50 > 40 30 20 10 0 0 50 100 150 200 250 300 350 400 .450 500 550 . 600 Exudation Pressure (psi) ......... .... ______ • .1 .1 PACIFIC SOILS ENGÔ, Inc. Pavement Design Data Sheet Project: Villas La Costa W.O.: 400942 Sample #: R-5 Approx. Location: Calle Andar (S) Sta. 11+50 Approx. Limits: Calle Andar (S) Sta. 10+25 to 13+36 Depth: 0-1.0ft. LM Sand Equivalent Value: 8 R-Value @ 300psi: • 23 0 PLATE E 0 0 0 0 Specimen A B C moisture content,(%) 38:4 16.7 17.5 dry density,(pcf) 108.5 113.0 308.2 exudation pressure,(psi) 224 338 276 expansion pres., dial rd. 17 23 19 R-value by stabilometer 16 26 22 Exudation Pressure Chart 70 60 50 > 40 30 20 10 0 0 50 100 150 200 250 300 350 400 450 500 550 600 Exudation Pressure (psi) 100 90 80 J 1J1E1I' I PACIFIC SOILS ENG., Inc. Pavement Design Data Sheet Project: Villas La Costa W. 0.: 400942 .Sample#: .R-6 Approx Location: Calle Andar (NE) Sta. 18+50 = 21+26 Approx. Limits: Calle Andar (NE) Sta. 2 1+00 to 22+72 Depth: 0-1.0ft. Specimen A B C moisture content,(%) 1 5.6 17.3 16.5 dry density,(pcf) 115.1 1 111.21 112.3 exudation pressure,(psi) 363 224 275 expansion pres., dial rd. 23 30 29 R-value by stabilometer 31 1 18 24 0 S LM Sand Equivaleiit Value: 11 R-Value @ 300psi: 26 PLATE F I. RM BE 'I - - V Ml ,.f igs 10M A / Yfli' ii- 1 i t1 "s • - I ENGINEERING, I t