S-12-0004 Attachment 2_Base_Final__Drawings_02.01.2012.pdf
PDF 13 MB Posted
- Attached to
- DESERT VIEW OVERLOOK REHABILITATION SMNRA
- Solicitation number
- AG-0261-S-12-0004
About this file
Amend 005 - Attach 2
View the file
Other files
Show all 22
On GovTribe
Work with this file
- Download the original file
- Contacts named in this file
- Similar government files
- Ask GovTribe AI about this file
Text version
Backfill Movement and Soil Cracks Mechanically Stabilized Earth (MSE) retaining walls are flexible reinforced soil masses, which interact with the foundation and retained backfill zones to provide a stable retaining structure.
These soil zones have different stress/strain/consolidation properties which can result in differential movements and strain of the reinforced and retained soil matrix.
Relative movement of the soil masses is typically noted in taller wall or tiered structures with small soil cracks occur behind the wall structure near the boundary of soil zones with different strain properties. Experience has shown that this type of soil cracking is most noticeable after very heavy rainstorms where the additional saturated soil weight and seepage pressure involved can cause slight differential movement of the masses. A wall schematic and possible causes are shown below:
Possible causes of soil cracking
1) Consolidation of reinforced zone backfill - Any settlement of reinforced fill relative to adjacent soils man cause cracking at end of reinforcement. If soils are placed and compacted in dry conditions, water can cause secondary consolidation of the reinforced fill and cracking at the end of reinforced zone.
2) Consolidation of retained soil wedge -
Similar to Item 1 causing cracking at the back of fill wedge relative to existing soils.
3) Lateral wall movement due to active earth pressure state – lessor quality backfill soils exhibit higher lateral movement to mobilize the active earth pressure state. If the reinforced wall mass strains laterally, the fill must settle accordingly and cracking can occur.
4) Foundation settlement – The foundation soils of many wall structures have experienced the loading from the new fill which can cause differential settlement between the wall volume and cut slope.
5) Toe Settlement – The wall toe can experience more settlement than the wall heel due to the lack of overburden or confining pressure resulting in slight lateral wall movement in the upper wall section and tension cracking at the end of reinforcement.
Soil cracks can also be a sign of global instability or continuing settlement which requires evaluation by a geotechnical engineer. However, most minor soil cracking observed is structurally insignificant to the long term performance of the wall structure but can lead to reflective cracks in pavement sections and/or separation of curbs when of greater magnitude.
Significantly increasing the length of the upper reinforcement levels to help bridge the potential crack zones can be prudent precaution for projects with flexible pavements extending over all zones. High quality backfill, proper backfill placement and compaction, and firm foundations are the best precautions against soil cracking.
N O
T E
S
1.
M in im u m t h ic k n e s s o f a ll a r e a s t o b e i n c h e s
B e n c h e s a r e c a s t i n o n e i n t e g r a l p ie c e N o a s s e m b ly r e q u ir e d
C o lo r in g a g e n t s a r e t o b e p u r e m in e r a l o x id e s a n d s h a ll b e m ix e d i n t e g r a ll y w it h c e m e n t C o lo r t o b e D a v is
C o lo r s S e q u o ia
S a n d F in is h t o b e s m o o t h
C o n c r e t e m ix d e s ig n t o i n c lu d e
.5 s a c k s P o r t la n d c e m e n t p e r y a r d w it h m a x im u m r o c k s iz e o f r e in fo r c e d w it h a n d r e b a r g r id
C u r e d c o n c r e t e s h a ll a t t a in m in im u m c o m p r e s s iv e s t r e n g t h o f
,0
P .S
.I
A ll f o r m e d s u r f a c e s a n d e d g e s s h a ll b e f u ll y r o u n d e d a n d s m o o t h f in is h e d
F in is h o f a ll e x p o s e d s u r f a c e s t o h a v e a c o n c r e t e g r a f f it i-r e s is t a n t s e a le r a p p li e d
M O
D E
L:
O U T
D O
O R
C R E A T
IO
N S
IN
C
B a rn e y
S tr e e t
A n d e rs o n C
A
(5
-6
F A
X
-6
D A
TE
: 1
/1 1/
C on to ur
B en ch
M in im u m w e ig h t t o b e l b s
“S P
R
IN
G M
O U
N
TA
IN
A R
TW
O
R K
E N
G R
A
VE
D A
N D
P A
IN
TE
D B
LA
C
K
N A
T A
I E
O R
N A
A
L
IO
R
E C
A T
R E
M O
U
G
T
A I
I R
N P
S S
1"
N O
T E
S
1.
M in im u m t h ic k n e s s o f a ll a r e a s t o b e i n c h e s
B e n c h e s a r e c a s t i n o n e i n t e g r a l p ie c e N o a s s e m b ly r e q u ir e d
C o lo r in g a g e n t s a r e t o b e p u r e m in e r a l o x id e s a n d s h a ll b e m ix e d i n t e g r a ll y w it h c e m e n t C o lo r t o b e D a v is
C o lo r s S e q u o ia
S a n d F in is h t o b e s m o o t h
C o n c r e t e m ix d e s ig n t o i n c lu d e
.5 s a c k s P o r t la n d c e m e n t p e r y a r d w it h m a x im u m r o c k s iz e o f r e in fo r c e d w it h a n d r e b a r g r id
C u r e d c o n c r e t e s h a ll a t t a in m in im u m c o m p r e s s iv e s t r e n g t h o f
,0
P .S
.I
A ll f o r m e d s u r f a c e s a n d e d g e s s h a ll b e f u ll y r o u n d e d a n d s m o o t h f in is h e d
F in is h o f a ll e x p o s e d s u r f a c h a v e a c o n c r e t e g r a f f it i-r e s is t a n t s e a le r a p p li e d
M O
D E
L:
O U T
D O
O R
C R E A T
IO
N S
IN
C
B a rn e y
S tr e e t
A n d e rs o n C
A
(5
-6
F A
X
-6
D A
TE
: 1
/1 1/
C on to ur
B en ch
M in im u m w e ig h t t o b e l b s
“S P
R
IN
G M
O U
N
TA
IN
A R
TW
O
R K
E N
G R
A
VE
D A
N D
P A
IN
TE
D B
LA
C
K
N A
T A
I E
O R
N A
A
E C
A T
R E
M O
U
A I
I R
N P
S S
1"
N O
T E
S
1.
M in im u m t h ic k n e s s o f a ll a r e a s t o b e i n c h e s
B e n c h e s a r e c a s t i n o n e i n t e g r a l p ie c e N o a s s e m b ly r e q u ir e d
C o lo r in g a g e n t s a r e t o b e p u r e m in e r a l o x id e s a n d s h a ll b e m ix e d i n t e g r a ll y w it h c e m e n t C o lo r t o b e D a v is
C o lo r s S e q u o ia
S a n d F in is h t o b e s m o o t h
C o n c r e t e m ix d e s ig n t o i n c lu d e
.5 s a c k s P o r t la n d c e m e n t p e r y a r d w it h m a x im u m r o c k s iz e o f r e in fo r c e d w it h a n d r e b a r g r id
C u r e d c o n c r e t e s h a ll a t t a in m in im u m c o m p r e s s iv e s t r e n g t h o f
,0
P .S
.I
A ll f o r m e d s u r f a c e s a n d e d g e s s h a ll b e f u ll y r o u n d e d a n d s m o o t h f in is h e d
F in is h o f a ll e x p o s e d s u r f a c h a v e a c o n c r e t e g r a f f it i-r e s is t a n t s e a le r a p p li e d
M O
D E
L:
O U T
D O
O R
C R E A T
IO
N S
IN
C
B a rn e y
S tr e e t
A n d e rs o n C
A
(5
-6
F A
X
-6
D A
TE
: 1
/1 1/
C on to ur
B en ch
M in im u m w e ig h t t o b e l b s
“S P
R
IN
G M
O U
N
TA
IN
A R
TW
O
R K
E N
G R
A
VE
D A
N D
P A
IN
TE
D B
LA
C
K
N A
T A
I E
O R
N A
A
E C
A T
R E
M O
U
A I
I R
N P
S S
1"
C on to ur
B en ch
M od el : 4
S
H E
E T
O
F
D at e:
/1 1/
NA AT EIO RN A A NL O IR TEC EAR
OM U NG TN AI IR NP SS
N O
T E
S
1.
M in im u m t h ic k n e s s o f a ll a r e a s t o b e i n c h e s
B e n c h e s a r e c a s t i n o n e i n t e g r a l p ie c e N o a s s e m b ly r e q u ir e d
C o lo r in g a g e n t s a r e t o b e p u r e m in e r a l o x id e s a n d s h a ll b e m ix e d i n t e g r a ll y w it h c e m e n t C o lo r t o b e D a v is
C o lo r s S e q u o ia
S a n d F in is h t o b e s m o o t h
C o n c r e t e m ix d e s ig n t o i n c lu d e
.5 s a c k s P o r t la n d c e m e n t p e r y a r d w it h m a x im u m r o c k s iz e o f r e in fo r c e d w it h a n d r e b a r g r id
C u r e d c o n c r e t e s h a ll a t t a in m in im u m c o m p r e s s iv e s t r e n g t h o f
,0
P .S
.I
A ll f o r m e d s u r f a c e s a n d e d g e s s h a ll b e f u ll y r o u n d e d a n d s m o o t h f in is h e d
F in is h o f a ll e x p o s e d s u r f a c h a v e a c o n c r e t e g r a f f it i-r e s is t a n t s e a le r a p p li e d
M O
D E
L:
O U T
D O
O R
C R E A T
IO
N S
IN
C
B a rn e y
S tr e e t
A n d e rs o n C
A
(5
-6
F A
X
-6
D A
TE
: 1
/1 1/
C on to ur
B en ch
M in im u m w e ig h t t o b e l b s
“S P
R
IN
G M
O U
N
TA
IN
A R
TW
O
R K
E N
G R
A
VE
D A
N D
P A
IN
TE
D B
LA
C
K
N A
T A
I E
O R
N A
A
E C
A T
R E
M O
U
A I
I R
N P
S S
1"
S H
E E
T
O F
D at e:
/1
1/
B en ch L og
| Design_Package_1.17.2012_CM |
| 3 04 G-004 Survey Control_CM |
| 4 05 C-101 Roadway Plan_ |
| 5 06 C-102 Grading_CM |
| 6 07 C-103 Signing and Striping_CM |
| 7 08 C-104 Drainage_CM |
| 8 09 C-105 Roadway Plan NB edited_CM |
| 9 10 C-106 Roadway Plan nb edited_CM |
| 10 11 C-107 Roadway Plan nb edited_CM |
| 11 12 C-108 Retaining Wall_CM |
| 12 13 C-109 Sight Distance Excavation_CM |
| 13 14 C-301 Typical Sections_EDIT_CM |
| 14 15C Typical Sections Edited_CM |
| 15 16 C-303 Retaining Wall Cross Section_CM |
| 16 17 C-304 Trail Cross Section_CM |
| 17 18 C-305 Trail Cross Section_CM |
| 18 19 C-501 Details_EDIT_CM |
| 19 20 C-502 Details edited NB_CM |
| 20 21 C-503 Details_CM |
| 21 22 C-504 Details RipRap_EDIT_CM |
| 22 23 C-505 Details List of Standard Drawings_EDIT_CM |
| 23 29 31 C-601_CM |
| 24 33 C-604_CM |
| 25 33A C-605_CM |
| 26 34 C-606_CM |
| 27 35 C-607_CM |
| 28 36 C-608_CM 36 C-608 |
| 29 37 C-609_CM |
| 30 38 C-610_CM |
| 31 39 756001_C-611_CM |
| 32 40 C-612_CM |
| 33 1.0 Location Map_CM |
| 34 A1-plan view_CM |
| 35 A2-Post & panel elevation_CM |
| 36 C1-plan view_CM |
| 37 C2-semi-circle elevation_CM |
| 38 C3-semi-circle section_CM |
| 39 B1-two-panel on rail plan view_CM |
| 40 B2-two-panel on rail elevation_CM |
| 41 D1-two-panel on rail plan view_CM |
| 42 D2-two-panel on rail elevation_CM |
| 43 E1-two-panel on rail plan view_CM |
| 44 E2-two-panel on rail elevation_CM |
| 45 F1-two-panel on rail plan view_CM |
| 46 F2-two-panel on rail elevation_CM |
| 47 G1-plan view_CM |
| 48 G2-semi-circle elevation_CM |
| 49 G3 Semi-Circle_CM |
| 50 51 Bench Drawing_CM |
| Page 1 |
| Page 2 |
File details come from the government source that posted it. Updated .