HomeMy WebLinkAboutCT 02-05; LA COSTA OAKS SOUTH NEIGHBORHOOD 3.15; PAVEMENT RECOMMENDATIONS CIRCULO SEQUOIA, SITIO DAMASCO, SITIO MANANA, SITIO ALGODON; 2004-04-13GEOCON .. '
INCORPORATED
0 GEOTECHNICAL CONSULTANTS 'V
Project No. 06105-52-17
April 13, 2004 .
Davidson Communities
1302 Camino Del Mar. :
Del Mar, California 92014
Attention: Ms. Paula Lombardi
Subject: VILLAGES OF LA COSTA - THE OAKS SOUTH S
NEIGHBORHOOD 3.15
• CIRCULO SEQUOIA STATION 10+45 TO STATION 37+00
SITIO DAMASCO STATION 10+00 TO STATION 11+65
SiTIO MANANA STATION 10+00 TO STATION 12+60
SiTIO ALGODON STATION 10+003.0 STATION 23+40
CARLSBAD, CALIFORNIA . . .
PAVEMENT RECOMMENDATIONS
- Dear Ms. Lombardi: :
In accordance with your request,' we have performed supplemental geotechnical services for the
subject streets within Villages of La Costa.— The Oaks South development. The scope of our services
included obtaining representative subgrade soil samples. within .the sfreet areas and performing
Resistance Value (R-Value) tests. The purpose of our work was to provide pavement design
recommendations. To aid in preparing this letter, we have reviewed the improvement plans entitled
Improvement, and Utility Plans for: Villages of La Costa - Neighborhood 3.15, prepared by
Hunsaker & Associates, City of Carlsbad approval dated May 27, 2003 and our report entitled
Update Geotechnical Report, Villages of La Costa-The Oaks South, Neighborhood 3.15, Carlsbad,
California, dated January 6, 2004 (Project No. 06105-52-17). .
Subgrade soils in the area are predominately sandy to clayey gr'avels and exhibit relatively low to
high R-Valuè. characteristics, Based on field observations and previous laboratory tests, subgrade
materials possess an expansion potential of "low" to "medium" (Expansion. Index of 90 or less) as
defined by Uniform Building Code (UBC) Table 18-I-B. R-Value laboratory tests were performed in
accordance with ASTM D 2844-99 (California Test Method 30 1). and the laboratory test results are
presented on Table I. . . . .
It is our understanding that a Traffic Index (TI) of 4.5 has been assigned tO Sitio Damasco and a TI
of 5.0 has been assigned to the remainder of the subject street. Based on the above information and
laboratory testing, we recommend the pavement sections indicated on Table H. Pavement section
calculations were performed in accordance with California Department of Transportation Highway
Design Manual, Section 608.4, and the City of Carlsbad Minimum Structural Standard GS-17.
Pavement section calculations are presented on. Figure 1. These recommended sections should be
considered preliminary with final sections to be determined and approved by the City of Carlsbad.
6960 Flanders. Drive • San Diego, California 92121.2974 0 Telephone (858) 558-6900 0 Fax (858) 558-6159
As indicated on Table I, the R-Value laboratory test result for Sample No R-1 1 was less than 12 It is
our understanding that the City of Carlsbad requires testing for lime treatment of subgrade soils
when the R-Value is less than 12 However, it is the opinion of Geocon Incorporated that the lime
treatment of subgrade soils along the subject roadway alignments is not feasible due to the amount of
rock present near finish subgrade elevation Therefore, a waiver of the lime treatment policy is
requested
Prior to placing base material for roadways, as well as curb(and gutter, we recommend the upper
12 inches of subgrade be scarified, moisture conditioned as necessary, and compacted to a dry
density of at least 95 percent of the laboratory maximum dry density near to slightlyabove optimum
moisture content in accordance with ASTM D 1557-00. In addition, the Class '2 aggregate base
should be compacted to a dry density of at least 95 percent of the laboratory maximum dry density
near to slightly above optimum moisture content Asphalt concrete should be compacted to a density
of at least 95 percent of the laboratory Hveem density in accordance with ASTM D 2726-96a The
upper 12 inches of subgrade soils beneath areas to receive concrete sidewalks should be compacted
to a dry density of at least 90 percent of the laboratory, maximum dry density near to slightly above
optimum moisture content Fill soil and base lift thickness should not exceed 6 inches..Class 2
aggregate base and asphalt concrete should conform to the City of Carlsbad specifications
The performance of asphalt concrete paement is highly dependet on providing positive surface
drainage away from the edge of the pavement Ponding of water on or adjacent to the pavement will
likely result in pavement distress and subgrade failure To re-dike the occurrence for such situations,
we recommend that a minimum dramage gradient of 1 percent b maintained for pavement surfaces
Drainage from 1andscaped areas should be directed to controlled drainage structures
Should you have any questions regarding this correspondence, or if we may be of further service,
please contact the undersigned at your convenience
Very truly yours,
GEOCON INCORPORATED
co
~hane acer.
RCE63291
SR:bjl
(2) Addressee
(3/del) Davidson Communities (Jobsite)
Attention Mr. George Sturgeon
(1) Hunsaker.& Associates
Attëntioii: Mr. David Blalock
Sample No Location R-Value
R-6 Circulo Sequoia Station 33+50 to 37+00 62
R-7 Circulo Sequoia Station 30+00 to 33+50 62
R-8 Circulo Sequoia Station 27+00 to 30+00 30
R-9 Circulo Sequoia Station 24+00 to 27+00 29
RAO Circulo Sequoia Station 22+45 to 24+00
Sitio Station _Damasco_ _10+00_to_11+65 26
R-1 1 Circulo Sequoia Station 19+45 to 22+45 9
R-12 Circulo Sequoia Station 16+45 to 19+45 22
R-13 Circulo Sequoia Station 13+45 to 16+45 23
R-14 Circulo Sequoia Station 10+45 to 13+45 ' 40
R-15 Sitio Manana Station 10+00 to 12+60 65
R-16 Sitio Algodon Station 10+00 to 12+70 43
R-17 Sitio Algodon Station 12170 to 15+40 26
R-18 Sitio Algodon Station 15+40 to 18+10 45
R-19 Sitio Algodon Station 18+10 to 20+80 45
-20 Sitio Algodon Station 20+80 to 23+40 41
I 1'
I
I -
4: 1
t
t
I r
t
Project No. 06105-52-17 April 13 2004
Location Traffic
Index (TI)
Asphalt
Concrete (inches)
Class 2
Aggregate Base
(inches)
Circulo Sequoia Station 33+561o,-31+001', 5 0 4 4
Circulo Sequoia Station 30+00 to 33+50 5.0 4 4
Circulo Sequoia Station 27+00j 30+00 5 0 4 4
Circulo Sequoia Station 24+00 to 27+00 5.0 4 4
Circulo Sequoia Station 22+45 to 24+00 5 0 4 4
Sitio Damasco Station 10+00 to 11+65 4.5 4 4
Circulo Sequoia Station 19+45 to 22+45 5 0 4 7
Circulo Sequoia Station 16+45 to 19+45 5.0 4 5
Circulo Sequoia Station 13+45 to 16+45 5 0 4 5
Circulo Sequoia Station 10+45 to 13+45 5 0 4 4
Sitio Manana Station 10+00 to 12+60 5 0 4 4
Sitio Algodon Station 10+00 to 12+70 5.0 4 4
Sitio Algodon Station 12+70 to 15+40 51.01 4 4
Sitio Algodon Station 15+40 to 18+10 5.0 4 4
Sitio Algodon Station 18+10 to 20+80 5 0 4 4
Sitio Algodon Station 20+80 to 23+40 5 0 4 4
FIGURE 1
PAVEMENT SECTION CALCULATIONS
VILLAGES OF LA COSTA - THE OAKS SOUTH
Circulo Sequoia - Station 33+50-to 37+00
Use subgrade R-Value = 62.0 "
Traffic Index (TI) = 5.0
Methodology = CALTRANS Highway 'Design Manual Section 608.4
Safety Factor =0:2 - Applied to Asphalt Concrete (AC) ,
GE for AC = (0.0032)(5.0)(100-78.0)+0.2 =.55 feet
from Table 608.4B Highway Design.Manual .
GE = .55 feet for AC yields actual thickness = 2.65 inches . . (
Use 4.0 inches of AC - City Minimum
. GE for 4.0 inches of AC =.83 feet
GE fOr base = (0.0032)(5.0)(100-62.0) -.83 = -.23 feet •'
from' Table 608.4B Highway Design Manual with GF for Class 2 base = 1.1
Base thickness = -2.46 inches
. Use base thickness .= 4.0 inches'
Design Street Structural Section
,. Asphalt Concrete Thickness'= 4.0 inches
Class 2 Aggregate Base Thickness = 4.0 inches '
.
..
Circulo Sequoia. -: Station 30+00 to 33+50 . ' ' •
. '
Use subgrade R-Value = 62.0 ', . '• . ' .
Traffic Index (TI) = 5.0
' ' ' Methodology = CALTRANS Highway Design Manual Section 608.4
' ' ' Safety Factor = 0.2 -- Applied to Asphalt Concrete (AC)' . ..
GE for AC = (00032)(5.0)(100-78.0)+0.2 =..55 feet , , . . . . . .• . ' '.
from Table 608.4B Highway Design Manual
.GE ='.55 feet for-AC yields actual thickness = 2.65 inches
Use 4:0 inches of AC City Minimum',
GE for 4.0 inches of AC = .83 feet
GE for base ,= (0.0032)(5.0)(100-62.0) - .83 = -.23 feet
from Table 608.4B Highway Design-Manual with GF for Class 2 base = 1.1 '. ' •
Base thickness -2.46 inches
Use base thickness ,= 4.0 inches
*** Design Street Structural Section
Asphalt Concrete Thickness = 4.0 inches - • .
.
. . • • . '
Class 2 Aggregate Base Thickness = 4.0 inches • . .. ' .
Project No. 06105-52-17 . . ' . • • • ' '
-
•- April, 13, 2004
FIGURE 1 (Continued)
PAVEMENT SECTION CALCULATIONS
VILLAGES OF LA COSTA - THE OAKS SOUTH
Circulo Sequoia - Station 27+00 to 30+00
Use subgrade R-Value =30.0
Traffic Index (TI)=5.0 :
Methodology = CALTRANS Highway Design Manual Section 608.4
Safety Factor = 0.2 -- Applied to Asphalt Concrete (AC)
GE for AC = (0.0032)(5.0)(100-78.0)+0.2.=.5.5 feet
from Table 608 413 Highway Design Manual
GE = 55 feet for AC yields actual thickness = 2.65 inches
Use 4.0 inches of AC - City Mirnmuñi
GE for 4.0 inches of AC =.83 feet
GE for base = (0..0032)(5.0)(100-30.0) -,.83 = 29 feet
from Table 608 4B Highway Design Manual with GF for Class 2 base = 11
Base thickness = 3.13 inches
Use base thickness = 4.0 inches
*** Design Street Structural Section
Asphalt Concrete Thickness = 4.0 inches
Class 2 Aggregate Base Thickness = 4.0 inches
Circulo Sequoia - Station 24+00 to 27+00
Use subgrade R-Válue= 29.0
Traffic Index (TI) = 5.0
Methodology = CALTRANS Highway Design Manual Section 608.4
Safety Factor = 0.2 -- Applied to Asphalt Concrete (AC)
GE for AC = (0.0032)(5-.0)(l00-'78..0)+0.2. =.55 feet
from Table 608 4B Highway Design Manual
GE = 55 feet for AC yields actual thickness = 2.65 inches
Use 4.0 inches of AC - City Minimum
GE for 4.0 inches of AC = 83 feet
GE for base = (0.0032)(5.0)(100-29.0) - .83= .30 feet
from Table 608 4B Highway Design Manual with GF for Class 2 base = 11
Base thickness = 3.30 inches
Use base thickness = 4.0 inches
Design Street Structural Section
Asphalt Concrete Thickness = .4 .0 inches
Class 2 Aggregate Base Thickness = 4.0 inches
Project No 06105-52-17 April 13 2004
FIGURE 1 (Continued)
PAVEMENT SECTION CALCULATIONS
VILLAGES OF LA COSTA - THE OAKS SOUTH
Circulo Sequoia - Station 22+45 to 24+00
Use subgrade R-Value = 26 0
Traffic Index (TI) = 5.0
Methodology = CALTRANS Highway Design Manual Section 608 4
Safety Factor .= 0.2 -- Applied to Asphalt Concrete (AC)
GE for AC = (0.0032)(5.0)(100-78.0)+0.21 = 55 feet
from Table 608 4B Highway Design Manual
GE = 55 feet for AC yields actual thickness = 2.65 inches
Use 4.0 inches of AC - City Minimum
GE for 4:0 inches of AC = 83 feet
GE for base = (0.0032)(5.0)(100-26.0) -.83 =,.35 feet
from Table 608 4B Highway Design Manual with GF for Class 2 base = 11
Base thickness = 3 83 inches
Use base thickness = 4.0 inches
*** Design Street Structural Section
Asphalt Concrete Thickness = 4.0 inches
Class 2 Aggregate Base Thickness = 4.0 inches
Sitto Damasco - Station 10+00 to 11+65
Use subgrade R-Value = 26.0 .
Traffic Index (TI) = 4.5
Methodology = CALTRANS Highway Design Manual Section 608.4
Safety Factor = 0.2 -- Applied to Asphalt Concrete (AC)
GE for AC = (0.0032)(4.5)(100-78.0)+0.2 =.52 feet
from Table 608 4B Highway Design Manual
GE = 52 feet for AC yields actual thickness = 2.48 inches
Use 40 inches of AC - City Minimum
GE for 40 inches of AC '-.,83 feet
GE for base = (0 0032)(4 5)(100-26 0) --.83 =23 feet
from Table 608 4B Highway Design Manual with GF for Class 2 base = 11
Base thickness = 2.53 inches
Use base thickness = 4.0 inches
*** Design Street Structural Section
Asphalt Concrete Thickness = 4.0 inches
Class 2 Aggregate Base Thickness = 4.0 inches
Project No 06105-52-17' April 13 2004
FIGURE 1 (Continued)
PAVEMENT SECTION CALCULATIONS
VILLAGES OF LA COSTA'THE OAKS SOUTH
Circulo Sequoia . Station 19+45. to 22+45. •. .
Use sibgrade RValue'= 9.0. . . . . .. .. ..
Traffic Index (TI) = 50
Methodology CALTRANS Highway Design Manual Section 608.4 . '.
: Safety Factor = 0.2 '-- Applied to Asphalt Concrete (AC)
'GE for AC= (0.0032)(.0)(100-78.0)+0.2 -.55 feet
from Table 608.4B Highway Design Manual .. . . . .. .' . .
GE = .55 feet for AC yields actual thickness =-2.65 inches
Use, 4.0 inches of AC - City. Minimum
GE for 4.0 inches of AC .83 feet' .. ' ' '• . . . '
GE for base = (0.0032)(5.0)(100-9.-0) - .83 = .62 feet
.from Table 608.4B Highway Design Manual'with GF for Class 2 base = 1:1
Base thickness = 6.79 inches
Use base thickness = 7.0 inches . . . . . . ••' . '
Design Street Structural Section
Asphalt 'Concrete Thickness = 4.0 inches
Class 2 Aggregate Base Thickness ='-7.0 inches
Circulo Sequoia - Station' 16+45 to 19+45
Use subgrade R-Value' = 22.0
Traffic Index(TI)=5.0 ' '• . ' ' ' '
' ' "
Methodology = CALTRANS' Hi'ghway Design Manual Section 608A . . . • . ' '
Safety Factor .= 0.2 --Applied toAshalt Concrete-,(AC)
GE for Ac- (0.0032)(5.0)(100-78,0)+0.2 =.55, feet
from Table 608.4B Highwa'Dèsign'Manual
GE= .55 feet for AC yields actual thickness = 2.65 inches
Use 4.0 inches of AC - City Minimum
GE for 4.0 inches of AC = 83 feet
'GE for base =,(0.0032)(5.0)(100-22.0)'- .83 = .41 feet
from Table 608.4B Highway Design Manual with GF for Class 2 base = 1.. 1
Base thickness .=. 4 52 mches
Use base thickness =5.0 inches ' ' ' ' ••
Design Street Structural 'Section' ** '
Asphalt Concreté Thickness 4.0 inches '' : . ' ' : ' •'
Class 2 Aggregate Base Thickness ,= 5.0 inches '•'
''
. . ' ' . . •'
Project No. 06105-52-17. • ' ' ' ' ' ' ' ' ' . '. April 13,2004
FIGURE 1 (Continued)
PAVEMENT SECTION CALCULATIONS.
VILLAGES OF LA COSTA - THE OAKS SOUTH.
Circulo Sequoia - Station 13+45 to 16+45
Use subgrade R-Value = 23.0
Traffic Index (TI) = 5.0
Methodology= CALTRANS Highway Design Manual Section 608.4 ..
Safety Factor = 0.2 -- Applied to Asphalt Concrete (AC) . °• .
GE for AC = (0.0032)(5.0)(100-78.0)+O.2= .55 feet
from Table 608.4B Highway Design Manual .
.
GE = .55 feet for AC yields actual thickness = 2.65 inches . °. . . . .
Use 4.0 inches of AC - City Minimum
. .GEfor 4.O inches' ofAC=°.83feét . .
GE for base =(0.0032)(5.0)(100-23.0) - .83= .40 feet
from Table 608.4B Highway Design Manual with GF for-Class 2base = 1.1
Base thickness =A35 35 inches
Use base thickness = 5.0 inches. .
. • °•
*** Design Street Structural Section
Asphalt Concrete Thickness = 4.0 inches . . . . ..
Class 2 Aggregate Base Thickness = 5.0 inches.
Circulo Sequoia.- Station 10+45 to 13+45 • . . . .
Use subgrade R-Value = 40.0 . .
•• . . . .
Traffic Index (TI) = 5:0 . . S • . . . . . ..
Methodology = CALTRANS Highway Design Manual Section 608.4 . ... .5 ° .
Safety Factor = 0.2 -- Applied to Asphalt Concrete (AC)
•°• . '• . . .
. GE for AC = (0.0032)(5.0)(100-78.0)+0.2 = .55° feet . . •
:
. • from Table 608.4B Highway Design Manual
°
GE = .55 feet for AC yields actual thickness =2.65 inches
Use 4.0 inches of AC - City Minimum 2 :' • .
° GE for 4.0 inches of AC = .83 feet • • • . • . • . . •:. •
. GE for base = (0.0032)(5.0)(100-40.0)- .83 = .13 feet . • • . . . • •
from Table 608.413 Highway Design Manual with GF for Class 2 base = 1.1
• Base thickness- 1.38 inches • • ° ° ° S •
•
S
Use base thickness = 4.0 inches ° S •
5°
• S • ° °
S
•
°° 5'
Design Street Structural Section ° ° . .• •
• :
S • Asphalt Concrete Thickness =4.0 inches .5,. ° • ° ° S ° • ° ° ° S
Class 2 Aggregate Base Thickness = 4.0 inches , • S
•
° ° ' S 5 -•
Project No. 06105-52-17 ° • . • S • • •
• • ° April l3,2004
S
FIGUREi(Cbntinued)
PAVEMENT SECTION CALCULATIONS
VILLAGES. OFLA COSTA—THE OAKS SOUTH
Sitio Manana - Station 10+00 to 12±60 •.
Use subgrade R-Value = 65.0
Traffic Index (TI) = 5.0
Methodology = CALTRANS Highway Design Manual Section 608.4
Safety Factor = 0.2 -- Applied to Asphalt Concrete (AC)
GE for AC = (0.0032)(5.0)(10Q-78.0)+0.2 = 55 feet
from Table 608.4B-Highway Design Manual
GE = 55 feet for AC yields actual thickness = 2.65 inches
Use 4.0 inches of AC - City Minimum
GE for 4.0* inches of AC = 83 feet
GE for base = (0.0032) 5.0)(100-65.0) -.83 = - 27 feet
from Table 608 4B Highway Design Manual with GP for Class 2 base = 11
Base thickness = -2.98-1n ches
Use base thickness = 4.6 inches
Design Street Structural Section
Asphalt Concrete Thickness = 4.0 inches
Class 2 Aggregate Base Thickness = 4.0 inches
Sitio Algodon - Station 10+00 to 12+70
Use subgrade R-Value 43.0
Traffic Index (TI) = 5.0
Methodology = CALTRANS Highway Design Manual Section 608.4
Safety Factor = 0.2 -- Applied to Asphalt Concrete (AC)
GE for AC = (0.0032)(5.0)(100-78.0)+0.2 = 55 feet
from Table 6084B Highway Design Manual
GE = 55 feet for AC yields actual thickness =:2.65 inches
Use 4 0 inches of AC - City Minimum
GE for 4.0 inches of AC = 83 feet
GE for base = (0.0032)(5.0)(100-43.0) - 83 -.08 feet
from Table 608 4B Highway Design Manual with GF for Class 2 base = 11
Base thickness = 86 inches
Use base thickness = 4.0 inches
Design Street Structural Section
Asphalt Concrete Thickness = 4.0 inches
Class 2 Aggregate Base Thickness = 4.0 inches
Project No 06105-52-17 April 13 2004
. .. .: •' ..
FIGURE f(Continued)
PAVEMENT SECTION CALCULATIONS. .
. . . •.
.. .
., . VILLAGES OF LA COSTA-THE OAKS:SOUTH' . . . .
Sitio Algo don - Station, 12+70 to -15+40 . .'.. .' . . '. . . .
Use subgrade R-Value = 26.0 . .• ' . .. ' . . . "
Traffic Index (TI)=5.O ' '• . '
Methodology = CALTRANS Highway Design Manual Section 608.4
Safety. Factor =,O.-2 .-- Applied to. Asphalt Concrete (AC) . . .' . . ,.
GE for AC .= (0.0032)(5.0)(100-78.0)±0.2 = .55 feet . . . .
from Table' 608.4B Highway Design Manual
GE = .55 feet for AC yields actual thickness 2.65 inches. •
. Use 4.0 inches of AC - City Minimum . .. . . . . . S .
GE for 4.0 inches of AC = .83 fe,et
GE for base =.(0.0032)(5:0)(100-26.0) - .8.3 = .35 feet. .'' • ' . ' "
from Table 608.4B Highway Design Mnual with GF for Class 2 base = 1.1
Base thickness = 3.83. inches
Use base thickness = 4.0 inches
Design Street Structural Section
Asphalt Concrete Thickness 4.0 inches
Class 2 Aggregate Base Thickness = 4.0 inches
Sitio.Algodoñ -Station 15+40 to 18+10.
. Use subgrade R-Valuë =450 ' . ' .• . . .. .
'
' ' '
Traffic Index' (TI) ,= 5.0
, , . ' ' V , , , . ' .'. •'
Methodology = CALTRANS Highway Design Manual Section 608.4
Safety Factor' = 0.2 -- Applied to Asphalt Concrete' (AC) • '
V .. • ' ''
GE for AC =-(0.0032)(5.0)(100-78 0)+0 2 = 55 feet
from Table 608 4B Highway Design Manual
GE = .55 feet for AC yields actual thickness = 2.65 inches ' , . S ,
V
. •
V
Use 4.0 inches of AC - City Minimum
,GE for 4.0 inches of AC .83 feet V •• ; . . ,
V'
,
V
' :
'GE for base = (0-.0032)(5-0)(100-45.0)- .83 = .05 feet ' ,'
. ' S • '' '
' '•,.
from Table 608 4B Highway Design Manual with GF for Class 2 base = 11
V • Base thickness = .51 inches V Use base 'thickness =4.0 inches 5, ' V ' . ', S • "
*** Design Street Structural Section
Asphalt Concrete Thickness 77 = 4.0 inches
V . V V V '• Class 2 ,Aggregate Base Thickness ,.= 4.0 inches . • . •' S
• •, V '
Project Nd. 06,10552-17'. .
' • V • ' -
' '• ' S • •
.
. April 13, 2004
FIGURE 1 (Continued)
PAVEMENT SECTION CALCULATIONS
VILLAGES OF LA COSTA —THE OAKS SOUTH
Sitio Algodon — Station 18+10 010±80
Use subgrade R-Value = 45.0 '• 0000
0 0 '
0
Traffic Index (TI)- 5.0
Methodology = CALTRANS Highway Design Manual Section 608.4
Safety Factor = 0 2 - Applied to Asphalt Concrete (AC)
GE for AC = (0 0032)(5 0)(100 78 0)+0 2 = 55 feet
0 from Table 608.413 Highway Design Manual 0 ,•
0 0
0
0
0
,
0 0
GE= 55 feet for AC yields actual thickness = 2.65 inches
0 Use 4.0 inches of AC — City Minimum
0 GE for 4.0 inches of AC = .83 feet 0
0
•,
'
0 0
0
'
. GE for base = (0-0032)(5.0)(100-45.0)-.83
0 =.05 feet
from Table 608.413 Highway Design Manual with GF for class 2 base = 1.1. .' •, 0 ' 0
O : .
'Base thickness = .51 inches , . . ' '
0 ', 00 '• ' ' .:
. ,Use base thickness = 4.0 inches . 0
, •, ' • .. .
0
0 Design Street Structural Section . 0 ,
' '
0 0
,• •,
0
,
. Asphalt Concrete Thickhess =4.0 inches ' . , , ,, 0 '' • 0 0
Class 2 Aggregate Base Thickness = 4 0 inches
Sttio Algodon — Station 20+80 to 23+40
0 , 0 Use subgrade R-Value = 41.0. 0 0 •,
0 ' , .' 0 '
.•
0
, ,
Traffic' Index (TI) =005.0
. 0 • •' '• , 0 ','' , ,
'O,
' •0 0 ' 0
0
, Methodology CALTRANS Highway Design Manual Section 608.4' ' 0 '
, •.,
, 0
,
O
' :
Safety Factor = 0.2 -- Applied to Asphalt Concrete, (AC)0 .' ' 0
•
'
•' 0 0 '0
' GE for AC = (0.0032)(5.0)(100778.0)±0.2 .55 feet 0 . : '• '.
0
from Table 608.413 Highway Design. Manual.. .
••
0 "
0•
0 .
0
0 0. 'GE = .55 feet for AC yields actual thickness = 2.65 inches ' '0
•, '
0
Use 4.0 inches of AC — city Minimum ,
0 0
, ' 0
,
•' •' 0, 0 0
O ' . GE for 4:0 inches of AC = .83 feet'
0 ' . GE for base = (0.0032)(5.0)(100-41.Q) - .83 .11 feet,. , ,
0 , 0 from' Table 608.4B Highway Desin Manual with GF for Class 2 base = 1.1 0 • 'Base thickness = 1.2-1 inches 0 0
0 ': ' 0 " • ' ':' /
0 0 Use base thilthess 4.0 inches
Design Street Structural Section
. • Asphalt Concrete Thickness = 440 inches,
Class 2 Aggregate Base Thickness =4 0 inches
0 ' 0 April 13,20P4 Project No. 061.05-52-17 '
0
, , 0 '
•
•o
. ' ' • ' 0