11-Drawings.pdf
PDF 11 MB Posted
- Solicitation number
- 25/0370
- Issued by
- Harris County, Texas
About this file
This is a comprehensive drawing set for Major Repairs to Brays Bayou Project ID D100-00-00-X134, prepared by Huitt-Zollars Inc. for the Harris County Flood Control District (HCFCD). The project encompasses significant rehabilitation work at two primary sites: the Leopold Drive site and the MacGregor site along Brays Bayou in Harris County, Texas. The scope of work includes removal and replacement of existing concrete channel lining, installation of steel sheet pile walls for structural support, repair of earthen slopes, construction of new concrete trails with cement-stabilized subgrades, installation of weep hole drainage systems, and implementation of riprap protection at Grade No. 2. The Leopold site work involves slope repair adjacent to Bayou Parkland on Almeda Road and concrete channel repair, while the MacGregor site requires extensive concrete lining replacement from station 495+67 to 499+91 with a 20-foot minimum bottom width. Construction access will be facilitated through Houston Parks and Recreation maintenance office for the MacGregor site and directly from Leopold Drive for the Leopold site, with temporary stormwater culverts required to cross existing drainage swales. The project drawings indicate an issuance for bidding date of October 31, 2025, with work approval dated October 28, 2025.
The project phasing notes indicate a two-phase construction approach at the MacGregor site to manage water diversion and allow sequential removal and replacement of channel elements. Site preparation requirements include pre-construction photo and video documentation, installation of six-foot chain link fencing on construction access routes through Bayou Parkland, protection of existing public concrete trails with construction fencing, and restoration of all disturbed areas to pre-construction conditions. The detailed specifications reference HCFCD standard specifications for concrete lining (Section 03310), structural excavation and backfill (Section 02316), riprap (Section 02378), and cement-stabilized subgrade (Section 02338). Benchmarks for surveying purposes are provided for both sites, with elevations referenced to NAVD88 Geoid 12B adjustment. The contractor must submit agreements with private property owners and Houston Parks and Recreation per HCFCD General Conditions, and any trail damage incurred during construction must be repaired at no cost to the district. CenterPoint Energy property restrictions apply, requiring advance notification for any activities crossing their fee or easement property.
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EXECUTIVE DIRECTOR CHRISTINA (TINA) PETERSEN, PHD, P.E.
LESLEY BRIONES
TOM S. RAMSEY, P.E.
ADRIAN GARCIA
RODNEY ELLIS
COUNTY JUDGE LINA HIDALGO
PCT . 1
PCT . 2 PCT . 4
PCT . 3
VICINITY MAP
PROJECT
LOCATIONS
H C
FC
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LOCATION MAP
PROJECT LOCATIONS
KEY MAP # 533E & # 533H
FACET # 5355D2 & 5455A11
MAJOR REPAIRS
HCFCD PROJECT I.D. #D100-00-00-X134
2025 BRAYS BAYOU
ROBERT G. POWELL
102329L I C E N S E D
PRO FE S S I O N A L E NG IN
EE
R
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T A T E O F T EX A S
Huitt-Zollars Inc.
Firm Registration No. F-76
10/31/2025
Issued for Bidding 11/21/2025 Job No.: 25-0370
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ROBERT G. POWELL
102329L I C E N S E D
PRO FE S S I O N A L E NG IN
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T A T E O F T EX A S
Huitt-Zollars Inc.
Firm Registration No. F-76
10/31/2025
ACTIVITIES ON/OR ACROSS CENTERPOINT ENERGY FEE OR EASEMENT PROPERTY
NO APPROVAL TO USE, CROSS OR OCCUPY CENTERPOINT FEE OR EASEMENT PROPERTY IS GIVEN. IF YOU NEED TO USE CENTERPOINT PROPERTY, PLEASE CONTACT OUR SURVEYING & RIGHT OF WAY DIVISION AT (713) 207-6348 OR (713) 207-5769.
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102329L I C E N S E D
PRO FE S S I O N A L E NG IN
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T A T E O F T EX A S
Huitt-Zollars Inc.
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102329L I C E N S E D
PRO FE S S I O N A L E NG IN
EE
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T A T E O F T EX A S
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SCALE: 1" = 1,000'
0 250 500 1000
LE
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D R
SCALE: 1"=1000'
PLAN SHEET GENERAL NOTES:
1. RIGHT & LEFT SIDES ARE BASED ON STANDING IN THE
CENTER OF THE CHANNEL, FACING UPSTREAM.
2. U/S = UPSTREAM, D/S = DOWNSTREAM
MACGREGOR SITE
SEE SHEET 15
SEE SHEET 14 FOR BENCHMARK NOTE
SEE SHEET 6 FOR ACCESS
GENERAL NOTES:
1. R.O.W. LINES SHOWN ON PLANS ARE APPROXIMATE. DO NOT CROSS FENCE LINES.
2. CONTRACTOR TO PROVIDE HCFCD WITH A COPY OF THE CONTRACTOR'S AGREEMENT WITH THE PRIVATE
PROPERTY OWNER, IN CONFORMANCE WITH HCFCD GENERAL CONDITIONS
LEOPOLD SITE
SEE SHEET 9
SEE SHEET 8 FOR BENCHMARK NOTE
SEE SHEET 6 FOR CONSTRUCTION ACCESS
HE
RM
AN
N
PA
RK
D R
HERMANN PARK
RIN
GNESS A
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HOLCOMBE
BR
AY
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T R
AI
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S.
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AC
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A
R D
HERMANN PARK CT
CAMDEN DR
S. MACGREGOR
G R
AN
D
B
LV
D
DIXIE STREET
AR
DM
ORE
S
T
S.H. 288BILL COATS BRIDGE
SA
M
PS
ON
ST
N MACGREGOR WAY
BU
RKE
TT
S
T
S MACGREGOR
SC
O
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S
T
S MACGREGOR
N MACGREGOR WAY
SOUTHMORE BLVD
CONSTRUCTION ACCESS ROUTE:
C
AM
BR
ID
G E
PL
AN
IN
D
EX
1"=1,000'
ROBERT G. POWELL
102329L I C E N S E D
PRO FE S S I O N A L E NG IN
EE
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T A T E O F T EX A S
Huitt-Zollars Inc.
McWILLIAMS
DOG PARK
BR
AY
S
BA
YO
U
G R
EE
N
W
AY
T R
AI
L
URBAN
FOREST
BILL COATS BRIDGE
HERMANN
PARK
MAINTENANCE
OFFICE
DIXIE STREET
AL
M
ED
A
R D
BAYOU
PARKLAND
HOLCOMBE
HERMANN PARK CT
S.
M
AC
GR
EG
OR
SOUTHMORE BLVD
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SOUTH MACGREGOR WAY
RIO VISTA ST
S MACGREGOR
SC
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MACGREGOR SITE NOTES:
CONCRETE TRAILS SHOWN IN AERIAL BACKGROUND SHALL REMAIN
OPEN TO THE PUBLIC DURING CONSTRUCTION; PROVIDE
CONSTRUCTION FENCE ON LEFT SIDE BETWEEN CHANNEL LINING
AND TRAIL; KEEP CONSTRUCTION EQUIPMENT OFF TRAILS UNLESS
AUTHORIZED BY THE ENGINEER; REPAIR ANY TRAIL DAMAGE DUE
TO CONSTRUCTION, AT NO COST TO THE DISTRICT.
HCFCD WILL FACILITATE AN AGREEMENT BETWEEN THE
CONTRACTOR AND HPARD FOR CONSTRUCTION ACCESS VIA THEIR
MAINTENANCE OFFICE DRIVEWAY AND THROUGH THE PARK TO
HCFCD BRAYS BAYOU RIGHT OF WAY. A TEMPORARY STORMWATER
CULVERT IS REQUIRED TO CROSS THE EXISTING DRAINAGE SWALE
ALONG THE SOUTH SIDE OF THE HPARD DRIVEWAY.
PROVIDE HCFCD WITH A COPY CONTRACTOR'S AGREEMENT WITH
HPARD IN CONFORMANCE WITH HCFCD GENERAL CONDITIONS
PROVIDE, INSTALL & MAINTAIN 6' CHAIN LINK FENCE ON BOTH SIDES
OF THE CONSTRUCTION ACCESS ROUTE THROUGH "BAYOU
PARKLAND". MEET ON SITE WITH HCFCD FOR CONFIRMATION OF
ACCESS ROUTE PRIOR TO BEGINNING ANY OTHER WORK ON-SITE.
REMOVE FENCE AND RESTORE ACCESS ROUTE TO
PRE-CONSTRUCTION CONDITION FOR ACCEPTANCE.
1"=400'
FLOW
FL
O W
FL
OW
FLOW
FLOW
FLOW
PLAN SHEET GENERAL NOTES:
1. RIGHT & LEFT SIDES ARE BASED ON STANDING IN THE
CENTER OF THE CHANNEL, FACING UPSTREAM.
2. U/S = UPSTREAM, D/S = DOWNSTREAM
3. CONTRACTOR TO RECORD AND SUBMIT
PRE-CONSTRUCTION PHOTOS AND VIDEO FOR EACH
SITE IMMEDIATELY PRIOR TO STARTING WORK AT A
SITE IN CONFORMANCE WITH GENERAL CONDITIONS
PARAGRAPH 5.25
ACCESS FROM ALMEDA RD VIA HOUSTON PARKS
AND REC. MAINTENANCE OFFICE DRIVEWAY
CONCRETE CHANNEL REPAIR
ADJACENT TO BAYOU PARKLAND
ON ALMEDA ROAD
SLOPE REPAIR AT
LEOPOLD DRIVE
ACCESS FROM
LEOPOLD DRIVE
C O
N
ST
R U
C
TI
O N
A C
C
ES
S M
A P
(TEMP. STORMWATER CULVERT IS
REQUIRED FOR ACCESS ACROSS
EXIST. SWALE)
LEOPOLD SITE NOTES:
ALIGNMENT OF EXISTING TRAIL IS BEING ADJUSTED. PROPOSED
WORK WILL REQUIRE A TRAIL CLOSURE DURING TRAIL DEMO AND
RE-CONSTRUCTION.
PROVIDE, INSTALL & MAINTAIN 6' CHAIN LINK FENCE ON THE BAYOU
SIDE OF THE EXISTING TRAIL UNTIL TRAIL CLOSURE IS SET UP FOR
PROPOSED GRADING AND TRAIL REPLACEMENT WORK.
REMOVE FENCE DURING SITE RESTORATION FOR ACCEPTANCE.
CONTRACTOR TO TAKE AND SUBMIT PRE-CONSTRUCTION PHOTOS
AND VIDEO FOR EACH SITE IMMEDIATELY PRIOR TO STARTING
WORK AT A SITE IN CONFORMANCE WITH GENERAL CONDITIONS
PARAGRAPH 5.25
ROBERT G. POWELL
102329L I C E N S E D
PRO FE S S I O N A L E NG IN
EE
R
S
T A T E O F T EX A S
Huitt-Zollars Inc.
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ROBERT G. POWELL
102329L I C E N S E D
PRO FE S S I O N A L E NG IN
EE
R
S
T A T E O F T EX A S
Huitt-Zollars Inc.
385+00385+00
Lot. 2
Lot. 9
Lot. 10
Lot. 3
EXISTING BB Inlet Top = 35.2724" RCPFL=28.82TBM "A"Elev = 35.28
24" RCPFL=10.87
Called 0.4378 AC
Harris County Flood Control District
H.C.D.R. No. 65269A
Called 32.15 ACJudgement
Harris County Flood Control District
vs. City of HoustonNo. 97648 H.C.D.R. No. 103349B
Called 0.1688 AC
Harris County Flood Control District
H.C.D.R. No. 65267A
Called 0.1688 AC
Harris County Flood Control District
H.C.D.R No. 65267A
LEOPOLD PLACE
H.C.D.R. No. 161822
Called 0.2176 AC
Harris County Flood Control District
O.P.R.R.P.H.C.T. No. RP-2016-284272
Called 0.4993 ACJudgementH.C.F.C.Dvs. Roland BeachNo. 88031 H.C.D.R. No. D731775
Called 0.98864 AC
Harris County
Flood Contro l D istr ict
O.P.R.R.P.H.C.T. N
o. H
848350
Called 0.5017 ACJudgementH.C.F.C.Dvs. Jack NeveleffNo. 87085 H.C.D.R. No. 84301ALot 1
TOP OF WASH OUT
WASH OUT AREA
TOP OF CONCRETE SLOPE
TOP OF CONCRETE SLOPE
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SCALE: 1" = 40'
0 10 20 40
NOTES:
1. THIS SURVEY WAS PERFORMED WITHOUT THE BENEFIT OF A TITLE
COMMITMENT.
2. BEARINGS BASIS PER TEXAS STATE PLANE COORDINATE SYSTEM,
SOUTHCENTRAL ZONE. ALL COORDINATES AND DISTANCES ARE IN
GRID AND WITH A COMBINED SCALE FACTOR OF OF 0.99988750455409.
3. SQUARE FOOTAGE TOTALS SHOWN HEREON OR REFERENCED
HEREIN ARE BASED ON MATHEMATICAL CLOSURES AND DO NOT
NECESSARILY REPRESENT THE POSITIONAL ACCURACY OF THE
BOUNDARY MONUMENTS.
4. THIS SURVEY DOES NOT PROVIDE A DETERMINATION OR OPINION
CONCERNING THE LOCATION OR EXISTENCE OF WETLANDS, FAULT
LINES, TOXIC OR HAZARDOUS WASTE AREAS, SUBSIDENCE,
OVERHEAD, SUBSURFACE AND ENVIRONMENTAL CONDITIONS OR
GEOLOGICAL ISSUES. NO STATEMENT IS MADE CONCERNING THE
SUITABILITY OF THE SUBJECT TRACT FOR ANY INTENDED USE,
PURPOSE OR DEVELOPMENT.
5. THE WORD "CERTIFY" OR "CERTIFICATE" AS SHOWN AND USED
HEREON MEANS AN EXPRESSION OF PROFESSIONAL OPINION
REGARDING THE FACTS OF THE SURVEY AND DOES NOT CONSTITUTE
A WARRANTY OR GUARANTEE, EXPRESSED OR IMPLIED.
BENCHMARKS:
ELEVATIONS WERE BASED ON REFERENCE MARKERS 040075R2, 040070,
040065R.
(NAVD88, GEOID 12B ADJUSTMENT)
TBM "A": BOX CUT IN CURB ON BB INLET. AT END OF LEOPOLD STREET
AS SHOWN HEREIN
ELEVATION: 35.28
NTS
SOIL BORING
GB-1
SOIL BORING
GB-1H
HCFCD R.O.W.
HCFCD R.O.W.
TBM "A"
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HCFCD R.O.W.
THIS SHEET IS BASED ON
SURVEY PROVIDED TO
HUITT-ZOLLARS BY HCFCD.
SEALED HCFCD SURVEY
DRAWING IS AVAILABLE ON
REQUEST.
LE
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Y
FLOW
D100-00-00
ROBERT G. POWELL
102329L I C E N S E D
PRO FE S S I O N A L E NG IN
EE
R
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T A T E O F T EX A S
Huitt-Zollars Inc.
TOP OF WASH OUT
WASH OUT AREA
112.75'
EXIST. 24" RCP
S12° 38' 43.02"W 200.00
1+
2+
0+
1+
35.63
36.94 TOC
36.78 PROP.
36.07
13.43' 23.94'
'R
.5
'R
'R
1.
MATCH EXIST. END OF CONC.
SAWCUT EXIST. ASPHALT TRAIL;
MATCH SURFACE ELEV.
DO
W
NS
TR
EA
M L
IM
IT
MAT
CH
E
XI
ST
. S
LO
PE
UP
ST
RE
AM
L
IM
IT
M
AT
CH
E
XI
ST
. S
LO
PE
36.90 TOC
36.82 PROP.
30.9'
'R
.60
66.04'
198.87'
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0 5 10 20
NTS
A
PROPOSED EARTHEN REPAIR PLAN
LEOPOLD DRIVE
SCALE: 1"=20'
A
HCFCD R.O.W.HCFCD R.O.W.
TBM "A"
LE
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HCFCD R.O.W.
EXISTING CONC. TRAIL
REMOVE EXIST. ASPHALT TRAIL
PROP. 6" CONC. TRAIL
ON 6" CEMENT
STAB. SUBGRADE
5-FT OFFSET FROM PROP.
CONC. TO BE 0.83' BELOW
TOP OF CONCRETE;
TRANSITION TO EXIST.
GRADES AT ENDS
EXISTING TREE
TO BE REMOVED
NOTE:
EXISTING
ASPHALT TRAIL
END ALIGNMENT
X=3,124,428.3253
Y=13,823,701.8748
LE
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S
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PL
A N
EXISTING 24" STORM DRAIN
BORE BH-1
GH-1H
RIPRAP GR. NO. 2
TOP ELEV. 17.6
TOC = TOP OF
CONCRETE
PROP. = PROPOSED
FINISH GRADE
A
SEE B ON SHEET 11 FOR PROP.
TRAIL TO EXIST. TRAIL DETAIL
SEE DETAILS C & E, SHEET 11
PROVIDE, INSTALL & MAINTAIN 6' CHAIN LINK FENCE ON THE BAYOU
SIDE OF THE EXISTING TRAIL UNTIL TRAIL CLOSURE IS SET UP FOR
PROPOSED GRADING AND TRAIL REPLACEMENT WORK.
REMOVE FENCE DURING SITE RESTORATION FOR ACCEPTANCE.
2. COMPACT APPROVED MATERIAL IN CONFORMANCE
WITH HCFCD STD SPECS 02314 AND 02315
1. REMOVE EXISTING SOIL TO FIELD VERIFY
BOTTOM OF FAILURE PLANE.
ROBERT G. POWELL
102329L I C E N S E D
PRO FE S S I O N A L E NG IN
EE
R
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T A T E O F T EX A S
Huitt-Zollars Inc.
0+75 1+00 1+25 1+50 1+75 1+80
3.54:1 PROP. SLOPE AT SECTION LINE
40'
2'
3'
10' 5' 5'
2'
4'
EXIST. HIGH PT=36.82
PROP. EDGE OF CONC.=36.94
PROP. EDGE OF CONC.=36.90
SLOPE
CONC.
0.5%
5'
SHOULDER
6:1 MAX.
4'
23'
PROP. 6"
CONC. TRAIL
5'
SLOPE TO
EXIST. GRADE
TRANSITION TO
EXIST. GRADE
PROP. GRADE=36.82
PROP. GRADE=36.78
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SCALE: 1" = 10'
0 2.5 5 10
NTS
PROPOSED EARTHEN REPAIR SECTION
LEOPOLD DRIVE
SCALE: 1"=10'9
A
EXISTING GROUND
EXISTING ASPHALT TRAIL
TO BE REMOVED
TOP OF EXIST.
CONCRETE SLOPE LINING
PROP. BENCHING
PROP. GRADE
PROP. RIPRAP
GRAD. NO. 2
TOP ELEV=17.6
LE
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MATCH EXIST.
GRADE
TOP OF PROP. 3.54:1 SLOPE
= ELEV. 36.07
BURIED RIPRAP
PER 02378 3.3 F.
ROBERT G. POWELL
102329L I C E N S E D
PRO FE S S I O N A L E NG IN
EE
R
S
T A T E O F T EX A S
Huitt-Zollars Inc.
GENERAL NOTES
EXISTING PAVEMENT PROPOSED PAVEMENT
1/4" MIN.
1/2" MAX.
MIN 1' - 9"
AS DIRECTED BY ENGINEER
3/
4"
12"
6"
3"
TRANSVERSE CONSTRUCTION
JOINT
#4 TIE BAR 2'-9"
@ 18" C-C SPACING
GROUT WITH 'PO-ROC'
EPOXY GROUT OR
APPROVED EQUAL
1. FOR FURTHER INFORMATION REGARDING PLACING CONCRETE AND REINFORCEMENT,
SEE COH SPECIFICATIONS 02338 - PORTLAND CEMENT STABILIZED SUBGRADE AND
02775 - CONCRETE SIDEWALK.
2. DO NOT SHEAR CUT DOWEL BARS.
3. REPLACE ANY BENT LONGITUDINAL REINFORCING. IF THERE IS NOT SUFFICIENT EXPOSED
REINFORCING TO PROVIDE A MINIMUM OF A 33 TIMES BAR DIAMETER LAP, REMOVE THE
EXISTING PAVEMENT AND SUFFICIENTLY EXPOSE THE EXISTING REINFORCING TO PROVIDE
A 33 TIMES BAR DIAMETER LAP. REPLACE ANY SHEAR BARS THAT ARE DISTURBED, BY
DRILLING AND GROUTING AS REQUIRED BY NOTE 5 BELOW; PERFORM THIS CORRECTIVE
ACTION AT NO EXPENSE TO HCFCD.
4. TIE BARS AND DOWEL BARS OMITTED, LOST, OR DAMAGED SHALL BE REPAIRED BY
DRILLING AND EPOXY GROUTING AT NO EXPENSE TO HCFCD.
5. ACP STANDS FOR ASPHALT CONCRETE PAVEMENT.
6. PROVIDE COH SPEC 02338 PORTLAND CEMENT STABILIZED SUBGRADE WHICH SHALL NOT BE
MEASURED OR PAID SEPARATELY BUT SHALL BE INCIDENTAL TO THE UNIT PRICE BID AND
MEASURED FOR 02775 CONCRETE SIDEWALK.
2"
2" STEEL
COMPACTED ACP
BACKFILL
CONC
TRAIL
3' - 0" 6"
3"
PROPOSED TERMINUS OF CONCRETE TRAIL
NOTE:
ADDITIONAL CONCRETE FOR THICKENED EDGE IS INCIDENTAL.
BACKFILL DISTURBED MATERIAL IN THE FLEXIBLE PAVEMENT
WITH ACP. THIS ACP IS INCIDENTAL.
TRAIL
SUBGRADE
SET FINISH GRADE
1.5" BELOW TOP OF
CONCRETE TRAIL ON
DOWNHILL SLOPES
(ALL)
1.5"
2.0% TYP
6:1
MAX
6:1
MAX
SH
O
U
LD
ER
SH
O
U
LD
ER
PROP 6" REINFORCED
CONCRETE TRAIL
EXIST GROUND
FINISHED GRADE
6" CEMENT STABILIZED
SUBGRADE
2'2'
CL
MATCH EXIST.
DETAIL A
2.0% MAX
3"
3"
6" REINFORCED CONC TRAIL
TRANSVERSE STEEL
#4 BAR CONTINUOUS
12" C-C (TYP)
LONGITUDINAL STEEL
#4 BAR CONTINUOUS
12" C-C (TYP)
MATCH EXISTING TRAIL WIDTH
6" CEMENT STABILIZED SUBGRADE
SEE NOTE 6
12"
SET FINISHED
GRADE 1-1/2"
BELOW TOP OF
CONCRETE TRAIL
6:1
MAX
6:1
MAX
SH
O
U
LD
ER
SH
O
U
LD
ER
2'2'
A
PP
R O
VE
D
C H
EC
K
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PR
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A R
ED
D
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C R
IP
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R
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D A
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A
PP
R
B R
A
YS
B A
YO
U
M A
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R
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A
IR
S
D
0-
-0 0-
X1
SCALE:
DATE:
OF
SHEET NUMBER
ww w.
hu itt-zo lla rs.
co m
0 R ich mo nd
A ve nu e, Su ite
Ho us ton , T ex as
2-
1.4
.00
D D
J
B P
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10/28/2025
NTS
EXISTING ASPHALT TRAIL PROPOSED CONCRETE TRAIL
SA
W
C U
T
EX
IS
TI
N G
A
SP
H A
LT
T
R A
IL
TR
A
IL
D
ET
A
IL
S
PROP. TRAIL CONNECTION TO EXIST. ASPHALT PAVEMENT
SCALE: N.T.S.11
A
PROP. TRAIL CONNECTION TO EXIST. TRAIL PAVEMENT
SCALE: N.T.S.11
B
TYPICAL SECTION 1
PROPOSED CONCRETE TRAIL
SCALE: N.T.S.11
C
TYPICAL DETAIL
CONCRETE TRAIL - TYPICAL DETAILS
SCALE: N.T.S.11
E
DETAIL A
SCALE: N.T.S.11
D
FLEXIBLE
PAVEMENT
STRUCTURE
THIS SHEET
ROBERT G. POWELL
102329L I C E N S E D
PRO FE S S I O N A L E NG IN
EE
R
S
T A T E O F T EX A S
Huitt-Zollars Inc.
℄ CHANNEL
VARIES
1'-0"
VARIES
1'-0"
TYPICAL EXISTING SLOPE LINING TYPICAL EXISTING SLOPE LINING10'-10" 10'-10"TYPICAL EXISTING LOW-FLOW LINING
4'-0" 3'-2" 3'-2" 4'-0" 1'-0" 1'-0" 1'-0" 1'-0"
6" CONC. LINING
6" CONC. LINING
2'-0"
6" CONC.
LINING
20'-0" 20'-0" TYPICAL BOTTOM WIDTHS
1V:30H 1V:30H
TYPICAL EXISTING SUB-DRAINAGE
PIPE SYSTEM
TYPICAL EXISTING SUB-DRAINAGE PIPE SYSTEM,
CLEAN OUT BOX & LATERAL PIPE
TYPICAL
LONGITUDINAL
TURN DOWN
(GRADE BEAM)
12" 12" 12" 6"
12" 6"
A
PP
R O
VE
D
C H
EC
K
ED
PR
EP
A R
ED
D
ES
C R
IP
TI
O N
R
EV
D A
TE
A
PP
R
B R
A
YS
B A
YO
U
M A
JO
R
R
EP
A
IR
S
D
0-
-0 0-
X1
SCALE:
DATE:
OF
SHEET NUMBER
ww w.
hu itt-zo lla rs.
co m
0 R ich mo nd
A ve nu e, Su ite
Ho us ton , T ex as
2-
1.4
.00
D D
J
B P
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10/28/2025
TYPICAL EXISTING SECTION
MACGREGOR SITE LOOKING UPSTREAM
SCALE: NOT TO SCALE
A
AS SHOWN
M A
C G
R
EG
O R
TY
PI
C A
L
EX
IS
TI
N G
C R
O
SS
S
EC
TI
O
N
ROBERT G. POWELL
102329L I C E N S E D
PRO FE S S I O N A L E NG IN
EE
R
S
T A T E O F T EX A S
Huitt-Zollars Inc.
R O
VE
D
C H
EC
K
ED
PR
EP
A R
ED
D
ES
C R
IP
TI
O N
R
EV
D A
TE
A
PP
R
B R
A
YS
B A
YO
U
M A
JO
R
R
EP
A
IR
S
D
0-
-0 0-
X1
SCALE:
DATE:
OF
SHEET NUMBER
ww w.
hu itt-zo lla rs.
co m
0 R ich mo nd
A ve nu e, Su ite
Ho us ton , T ex as
2-
1.4
.00
D D
J
B P
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10/28/2025
NTS
M A
C G
R
EG
O R
S
IT
E C
O N
ST
R
U C
TI
O
N N
O
TE
S
ROBERT G. POWELL
102329L I C E N S E D
PRO FE S S I O N A L E NG IN
EE
R
S
T A T E O F T EX A S
Huitt-Zollars Inc.
495+00
500+00
495+00
500+00
41.53
41.34
41.17
41.07
41.05 40.94
40.97
41.10
41.26 41.41
21.49 21.55
21.57
21.54
21.39
21.32
21.18
20.77
20.73 20.90
20.71
21.38
21.38
21.35 21.34 21.27
21.7321.67
21.62
21.21
21.46
21.43
21.22 21.19 21.28
21.07 20.83
20.79 21.04 20.97
20.65 20.83
21.6
21.6
21.6
21.6
21.4 21.3
21.2
20.8
20.8
20.8 20.7
8.5
8.5 8.5
8.2
8.1
7.9
7.9
7.7
7.5 7.5
8.6
8.5 8.6
8.5
8.4
8.5
8.4
8.4
8.4
8.1 8.2
7.9 7.8
7.7
7.6 7.4
21.3 21.4
21.3 21.4
21.5
21.2 21.2 20.9
20.7 21.0
20.9
20.6 20.8
22.2
21.7
21.2
21.7
21.6
21.2
8.0 8.1
8.0
7.8
7.7
7.4
7.3
7.4
7.1 7.0
8.1
8.1
8.1
7.8
7.7
7.6
7.4 7.2
7.2 7.0
22.2
21.7
21.3 21.7 21.6
21.1
41.4
41.2 41.2
40.8
40.9
40.7
40.3 40.4
40.4 40.5
40.6
40.4
40.3 40.4
39.5 39.7
39.8
38.9
38.9
38.8
23.4
24.5
25.1 23.5
23.0
22.9
22.6
22.1
21.8
22.5
21.8
22.2
22.6
23.2
25.0
21.9
21.3
21.2
23.9 22.8
22.6 22.3
21.8
22.2
22.1
22.5
22.8
23.9
24.5
22.3
22.1
22.0
22.1
21.5
21.3
20.7
23.3
23.1
23.8
23.323.0
23.0
22.3
22.2
22.0
22.0
22.6
23.0
21.6
21.8 21.9
21.7
21.7 21.7
21.6 21.4
21.6
21.6
21.522.6
24.2
26.4
30.4
31.7
35.2
34.3
30.8
24.1
22.5
21.6
26.6 27.4
33.7
21.6 22.8
28.0
31.9
21.1
26.1
31.0
36.3
21.0
26.3
32.3 36.8
21.2
27.9
33.2
21.0 22.9
28.5
35.6
20.523.1
28.4
34.6 35.0
29.0
23.4
20.8 20.1
20.0
20.5
40.1
39.9 40.1
39.7
41.5
41.2
41.1
39.7
40.8
39.6 39.3
39.8
39.1
40.4
39.1
39.6
39.3
39.8
38.9
39.3
40.4
39.7
40.1
40.3 39.9
40.2
39.8
39.8
22.73
22.73 22.71
22.44 22.29
22.18
21.80 21.70
22.81
22.84
22.90
22.91 22.78 22.76
22.78 22.68 22.02
21.74
21.45 21.37
41.08 41.05 41.00
41.02 41.01 41.04
41.04
41.03 41.00 40.84 40.73
40.78
40.76
40.56
40.45 40.45
40.48
40.50 40.69 40.43 40.46
40.12
40.18 40.25 40.02
39.94
40.03
40.22
40.46
40.2340.31
40.31 40.4340.6340.5240.45
40.43
40.47
40.53 40.58
40.55
40.54
40.5740.60
40.72
40.90
40.86
40.85
40.84
41.01
22.56
22.54 22.53
22.28
22.15 22.02
21.60
21.59 22.69 22.68 21.86 21.60
21.30 21.21
6.74
6.27
8.11
7.97
6.70
5.98
6.05
5.86
5.68
5.60 5.64
6.94
6.62
6.72
6.39
6.25
6.16
5.83
5.54 5.61
14.414.2
13.3 13.5
6.5 8.0
8.4 8.229.19
7.89
494+00
496+00
497+00
498+00
499+00
501+00
502+00
CITY OF HOUSTON
VOL. 327, PG. 146H.C.D.R.
CITY OF HOUSTON
VOL. 327, PG. 146H.C.D.R.
HARRIS COUNTY FLOOD CONTROL
DISTRICT RIGHT-OF-WAY EASEMENT
VOL. 3537, PG. 333H.C.D.R.
STATION=498+05.98
OFFSET=0.00
NORTHING=13822921.59
EASTING=3115687.80
L=826.700
Δ=99.2167 R=477.404
S8° 04' 27.00"W
646.62'
A
PP
R O
VE
D
C H
EC
K
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PR
EP
A R
ED
D
ES
C R
IP
TI
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D A
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A
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R
B R
A
YS
B A
YO
U
M A
JO
R
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A
IR
S
D
0-
-0 0-
X1
SCALE:
DATE:
OF
SHEET NUMBER
ww w.
hu itt-zo lla rs.
co m
0 R ich mo nd
A ve nu e, Su ite
Ho us ton , T ex as
2-
1.4
.00
D D
J
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R G
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10/28/2025
SCALE: 1" = 60'
0 30 60 120
NOTES:
1. THIS SURVEY WAS PERFORMED WITHOUT THE BENEFIT OF A TITLE
COMMITMENT. EASEMENTS AND RESTRICTIONS MAY EXIST ARE NOT
REFERENCED HEREON; NO ADDITIONAL RESEARCH REGARDING THE
EXISTENCE OF EASEMENTS OR RESTRICTIONS OF RECORD HAS
BEEN PERFORMED HARRIS COUNTY FLOOD CONTROL DISTRICT.
2. BEARINGS BASIS PER TEXAS STATE PLANE COORDINATE SYSTEM,
SOUTHCENTRAL ZONE. ALL COORDINATES AND DISTANCES ARE IN
GRID AND WITH A COMBINED SCALE FACTOR OF 0.99988750895636.
3. SQUARE FOOTAGE TOTALS SHOWN HEREON OR REFERENCED
HEREIN ARE BASED ON MATHEMATICAL CLOSURES AND DO NOT
NECESSARILY REPRESENT THE POSITIONAL ACCURACY OF THE
BOUNDARY MONUMENTS.
4. THIS SURVEY DOES NOT PROVIDE A DETERMINATION OR OPINION
CONCERNING THE LOCATION OR EXISTENCE OF WETLANDS, FAULT
LINES, TOXIC OR HAZARDOUS WASTE AREAS, SUBSIDENCE,
OVERHEAD, SUBSURFACE AND ENVIRONMENTAL CONDITIONS OR
GEOLOGICAL ISSUES. NO STATEMENT IS MADE CONCERNING THE
SUITABILITY OF THE SUBJECT TRACT FOR ANY INTENDED USE,
PURPOSE OR DEVELOPMENT.
5. THE WORD "CERTIFY" OR "CERTIFICATE" AS SHOWN AND USED
HEREON MEANS AN EXPRESSION OF PROFESSIONAL OPINION
REGARDING THE FACTS OF THE SURVEY AND DOES NOT
CONSTITUTE A WARRANTY OR GUARANTEE, EXPRESSED OR IMPLIED.
BENCHMARKS:
ELEVATIONS WERE BASED ON REFERENCE MARKERS 040090R,
040095, AND 040101R.
(NAVD88, GEOID 12B ADJUSTMENT)
TBM "A": BOX CUT ON SOUTHEAST CORNER OF CONCRETE PAD
WITH WATER FOUNTAIN, LOCATED ON THE EAST SIDE OF BRAYS
BAYOU (WITHIN PROJECT LIMITS).
ELEVATION: 44.38'
TBM "B": BOX CUT ON SIDEWALK ON WEST SIDE OF BRAYS BAYOU,
LOCATED APPROXIMATELY 310 FEET (MORE OR LESS) SOUTH OF
BILL COATS PEDESTRIAN BRIDGE AT SIDEWALK JUNCTION
ELEVATION: 22.75'
NTS
TBM "A"
TBM "B"
HCFCD R.O.W.
HCFCD R.O.W.
FLOW
FLOW
FLOW
M A
C G
R
EG
O R
S U
R
VE
Y
THIS SHEET IS BASED ON
SURVEY PROVIDED TO
HUITT-ZOLLARS BY HCFCD.
SEALED HCFCD SURVEY
DRAWING IS AVAILABLE ON
REQUEST.
ROBERT G. POWELL
102329L I C E N S E D
PRO FE S S I O N A L E NG IN
EE
R
S
T A T E O F T EX A S
Huitt-Zollars Inc.
495+00
500+00
495+00
500+00
41.53
41.34
41.17
41.07 41.05
40.94
40.97
41.10
41.26 41.41
21.49 21.55
21.57
21.54
21.39 21.32
21.18
20.77
20.73
20.90 20.71
21.38
21.38
21.35 21.34 21.27
21.7321.67
21.62
21.21
21.46
21.43
21.22 21.19 21.28
21.07
20.83
20.79 21.04 20.97
20.65 20.83
21.6
21.6
21.6
21.6
21.4 21.3
21.2
20.8
20.8
20.8 20.7
8.5
8.5 8.5
8.2
8.1
7.9
7.9
7.7
7.5 7.5
8.6
8.5 8.6
8.5
8.4
8.5
8.4
8.4
8.4
8.1 8.2
7.9 7.8
7.7
7.6 7.4
21.3 21.4
21.3 21.4
21.5
21.2 21.2 20.9
20.7 21.0
20.9
20.6 20.8
22.2
21.7
21.2
21.7
21.6
21.2
8.0
8.1
8.0
7.8
7.7
7.4
7.3
7.4
7.1
7.0
8.1
8.1 8.1
7.8
7.7
7.6
7.4
7.2
7.2 7.0
22.2
21.7
21.3 21.7
21.6
21.1
41.4
41.2 41.2
40.8
40.9
40.7
40.3 40.4
40.4 40.5 40.6
40.4
40.3 40.4
39.5 39.7
39.8
38.9
38.9
38.8
23.4
24.5
25.1 23.5
23.0
22.9
22.6
22.1
21.8
22.5
21.8
22.2
22.6
23.2
25.0
21.9
21.3
21.2
23.9 22.8
22.6
22.3
21.8
22.2
22.1
22.5
22.8
23.9
24.5
22.3
22.1
22.0
22.1
21.5
21.3
20.7
23.3
23.1
23.8
23.323.0
23.0
22.3
22.2
22.0
22.0
22.6
23.0 21.6
21.8 21.9
21.7
21.7 21.7
21.6 21.4
21.6
21.6
21.522.6
24.2
26.4
30.4
31.7
35.2
34.3
30.8
24.1
22.5
21.6
26.6 27.4
33.7
21.6
22.8
28.0
31.9
21.1
26.1
31.0
36.3
21.0
26.3
32.3 36.8
21.2
27.9
33.2
21.0 22.9
28.5
35.6
20.523.1
28.4
34.6
35.0
29.0
23.4
20.8 20.1
20.0
20.5
40.1
39.9 40.1
39.7
41.5
41.2
41.1
39.7
40.8
39.6 39.3
39.8
39.1
40.4
39.1
39.6
39.3
39.8
38.9 39.3
40.4
39.7
40.1
40.3
39.9
39.8
22.73
22.73 22.71
22.44 22.29
22.18
21.80 21.70
22.81
22.84
22.90
22.91 22.78 22.76
22.78 22.68 22.02
21.74
21.45 21.37
41.08 41.05 41.00
41.02 41.01 41.04
41.04
41.03 41.00 40.84 40.73
40.78
40.76
40.56
40.45 40.45
40.48
40.50 40.69 40.43
40.46
40.12 40.18
40.25 40.02
39.94
40.03
40.22
40.46
40.2340.31
40.31 40.4340.6340.5240.45
40.43
40.47
40.53 40.58
40.55
40.54
40.5740.60
40.72
40.90
40.86 40.85
40.84
41.01
22.56
22.54 22.53
22.28
22.15 22.02
21.60
21.59 22.69 22.68 21.86 21.60
21.30 21.21
6.74
6.27
8.11
7.97
6.70
5.98
6.05
5.86
5.68
5.60 5.64
6.94
6.62
6.72
6.39
6.25
6.16
5.83
5.54 5.61
14.414.2
13.3 13.5
6.5
8.0
8.4 8.229.19
7.89
494+00
496+00
497+00
498+00
499+00
501+00
502+00
CITY OF HOUSTON
VOL. 327, PG. 146H.C.D.R.
CITY OF HOUSTON
VOL. 327, PG. 146H.C.D.R.
HARRIS COUNTY FLOOD CONTROL
DISTRICT RIGHT-OF-WAY EASEMENT
VOL. 3537, PG. 333H.C.D.R.
STATION=498+05.98
OFFSET=0.00
NORTHING=13822921.59
EASTING=3115687.80
L=826.700
Δ=99.2167 R=477.404
S8° 04' 27.00"W
646.62'
A
PP
R O
VE
D
C H
EC
K
ED
PR
EP
A R
ED
D
ES
C R
IP
TI
O N
R
EV
D A
TE
A
PP
R
B R
A
YS
B A
YO
U
M A
JO
R
R
EP
A
IR
S
D
0-
-0 0-
X1
SCALE:
DATE:
OF
SHEET NUMBER
ww w.
hu itt-zo lla rs.
co m
0 R ich mo nd
A ve nu e, Su ite
Ho us ton , T ex as
2-
1.4
.00
D D
J
B P
R G
P
10/28/2025
SCALE: 1" = 60'
0 30 60 120
NTS
A
(TYP. AT NEW
SLOPE LINING)
REMOVE & DISPOSE OF EXIST
LEFT SLOPE & SHELF LINING,
& LOW FLOW LINING.
INSTALL NEW LINING (TYP)1
A
A
STA. 498+05.98
(TYP)2
REMOVE & DISPOSE OF EXCESS EARTHEN
MATERIAL SUITABLE FOR RE-USE, OR DRYING AND
LANDFILL DISPOSAL, TO BE DETERMINED BY THE
ENGINEER
R. O. W.
REMOVE & DISPOSE OF EXIST RIGHT SLOPE &
SHELF LINING. INSTALL NEW LINING.
B
B
(TYP)2
STA. 495+67.01
STA. 499+87
KEYED CONSTRUCTION
JOINT
STA 495+67
NORTHING=13823158.20
EASTING=3115721.36
BEGIN REMOVE & REPLACE
CONCRETE LINING;
MATCH EXISTING
ELEVATIONS & JOINTS
STA 499+91
NORTHING=13822747.97
EASTING=3115627.43
END REMOVE & REPLACE
CONCRETE LINING
MATCH EXISTING
ELEVATIONS & JOINTS
STEEL SHEET PILE WALL
SEE SHT. 16
PROVIDE TYPE "A" WEEP HOLES (SEE DETAIL SHEET 22) AT 12' MAX
O.C. (TYP. IN NEW SHELF LINING)
SEE CONSTRUCTION NOTE 5 ON SHEET 13 FOR MINIMUM TOP OF
SLOPE ELEVATION
2 PROVIDE WEEP HOLES AT 12' MAX O.C. (TYP.
IN NEW SLOPE LINING)
4 PROPOSED LATERAL STEEL SHEET PILE
WALL (SEE DETAIL SHEET 16)
5 PROPOSED LONGITUDINAL STEEL SHEET PILE WALL
CONSTRUCTION JOINT AT EXISTING CONCRETE LINING
(USE EXPANSION JOINT WHERE DIRECTED BY THE ENGINEER)
KEYED NOTES
FLOW
R. O. W.
R. O. W.
R. O. W.
FLOW
NOTES:
1. SEE SHEET 13 FOR CONSTRUCTION NOTES
2. SEE MACGREGOR SURVEY SHEET 14 FOR BENCHMARK NOTE
3. SEE FOR TYPICAL PROPOSED SECTION THIS SITE
4. SEE FOR TYPICAL EXISTING SECTION THIS SITE
5. PAVED TRAILS (CONCRETE WALKWAY) SHALL REMAIN OPEN TO
THE PUBLIC DURING CONSTRUCTION; PROVIDE 6-FT CHAIN LINK
FENCE DURING CONSTRUCTION ON LEFT SIDE BETWEEN
CHANNEL LINING AND TRAIL; KEEP CONSTRUCTION EQUIPMENT
OFF TRAILS UNLESS AUTHORIZED BY THE ENGINEER; REPAIR
ANY TRAIL DAMAGE DUE TO CONSTRUCTION.
CONSTRUCTION NOTE:
PAYMENT FOR SAW-CUTTING CONCRETE SHALL BE INCIDENTAL
TO PAY ITEM 2120-13, REMOVE & DISPOSE OF CONCRETE
CHANNEL LINING.
A
B
D
A
B
STEEL SHEET PILE WALL
SEE SHT. 16
KEYED CONSTRUCTION
JOINT
A
(TYP. AT NEW
SLOPE LINING)
M A
C G
R
EG
O R
S
IT
E
PL
A N
REGRADE FROM TOP OF CONCRETE SLOPE LINING AT 1V:20H TO
PROVIDE 12'-0" WIDE EARTH BENCH WHERE POSSIBLE. DO NOT
UNDERMINE EXISTING EARTH SLOPE.
REDUCE EARTH BENCH WIDTH WHERE REQUIRED TO AVOID
UNDERMINING EXISTING EARTH SLOPE.
REGRADE AT 1V:3H OR AS DIRECTED BY THE ENGINEER TO
TRANSITION FROM EARTH BENCH TO EXISTING EARTH SLOPE.
ROBERT G. POWELL
102329L I C E N S E D
PRO FE S S I O N A L E NG IN
EE
R
S
T A T E O F T EX A S
Huitt-Zollars Inc.
℄ LOW FLOW
SEE SHEET 15 AND
CONSTRUCTION NOTE 3
ON SHEET 13 FOR LOW FLOW
ELEVATION AND SLOPE NOTES
MATCH EXISTING JOINT
ELEVATION
REMOVE & DISPOSE OF EXISTING LEFT & RIGHT SLOPE,
LEFT & RIGHT SHELF LINING, & LOW FLOW LINING.
INSTALL NEW LINING.
LONGITUDINAL STEEL SHEET PILE
BACK OF
CONCRETE
6 7
1 2
CONTRACTOR TO WORK FROM LEFT SIDE; PROTECT
EXISTING RIGHT SIDE CONCRETE TRAIL; REPAIR ANY
TRAIL DAMAGE DUE TO CONSTRUCTION
STEEL SHEET PILE FLUSH
W/ TOP OF CONC.
-10
-10
0 20 40 60204060
' M
IN
. A
T
IN
SI
DE
ED
GE
F
OR
A
LL
S
HE
ET
S
AL
ON
G
SL
OP
E
LIN
IN
G (T
YP
℄ CHANNEL
SECTION B
TYPICAL SHEET PILE NOTES:
"Z" SECTION STEEL SHEET PILE WALL PZ27
ASTM A 572 GRADE 50 OR APPROVED EQUAL
SHEET PILING TO REMAIN PERMANENTLY IN PLACE
THE TOP OF SHEET PILING SHALL BE AT THE TOP OF
CONCRETE CHANNEL LINING AS SHOWN
THE BOTTOM OF EACH SHEET PILE SHALL BE A MINIMUM OF
12 FEET AND A MAXIMUM OF 13 FEET BELOW THE TOP OF
THAT SHEET PILE
C
CUT, PLUG AND ABANDON EXIST
6" DIA. PVC (TYP.)
C
CUT AND ABANDON EXIST
6" DIA. PVC (TYP.)
B
THICKENED CONCRETE
AROUND LATERAL PILING (TYP.)
B
LATERAL SHEET
PILE WALLTOP OF SHEET PILES FOR
WATER CONTROL
LONGITUDINAL SHEET
PILE WALL
A
PP
R O
VE
D
C H
EC
K
ED
PR
EP
A R
ED
D
ES
C R
IP
TI
O N
R
EV
D A
TE
A
PP
R
B R
A
YS
B A
YO
U
M A
JO
R
R
EP
A
IR
S
D
0-
-0 0-
X1
SCALE:
DATE:
OF
SHEET NUMBER
ww w.
hu itt-zo lla rs.
co m
0 R ich mo nd
A ve nu e, Su ite
Ho us ton , T ex as
2-
1.4
.00
D D
J
B P
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P
10/28/2025
SECTION AT PROPOSED LATERAL SHEET PILE WALL
MACGREGOR SITE @ STA. 495+67 & 499+91
LOOKING UPSTREAMSCALE: NOT TO SCALE
B
AS SHOWN
MACGREGOR CROSS SECTION A
MACGREGOR SITE LOOKING UPSTREAM
SCALE: NOT TO SCALE
A
EXISTING CONCRETE LINING
TO BE REMOVED & REPLACED
PROPOSED CONCRETE LINING
EXISTING GROUND
SEE SHEET 8 FOR CONSTRUCTION NOTES
KEYED NOTES
PROPOSED GROUND
EXISTING CONCRETE SIDEWALK
0 10' 20'
GRAPHIC SCALE: 1"= 10'
KEYED NOTES
CONSTRUCTION JOINT AT NEW SLOPE
LINING TO EXISTING SHELF LINING
E
M A
C G
R
EG
O R
C R
O
SS
S
EC
TI
O
N S
A
B
SEE CONSTRUCTION NOTE 5 ON SHEET 13 FOR MINIMUM TOP OF
SLOPE ELEVATION
REGRADE FROM TOP OF CONCRETE SLOPE LINING AT 1V:20H TO
PROVIDE 12'-0" WIDE "EARTH BENCH" WHERE POSSIBLE. DO NOT
UNDERMINE EXISTING "EARTH SLOPE".
REDUCE "EARTH BENCH" WIDTH WHERE REQUIRED TO AVOID
UNDERMINING EXISTING "EARTH SLOPE".
REGRADE AT 1V:3H OR AS DIRECTED BY THE ENGINEER TO
TRANSITION FROM "EARTH BENCH" TO EXISTING "EARTH SLOPE".
ROBERT G. POWELL
102329L I C E N S E D
PRO FE S S I O N A L E NG IN
EE
R
S
T A T E O F T EX A S
Huitt-Zollars Inc.
℄ CHANNEL
VARIES
1'-0"
10'-10" 10'-10" VARIES
1'-0"
TYPICAL EXISTING SLOPE LINING TYPICAL PROPOSED SLOPE LININGTYPICAL PROP. SHELF LINING TYPICAL PROP. SHELF LININGTYPICAL PROPOSED LOW-FLOW LINING
4'-0" 3'-2" 3'-2" 4'-0" 1'-0" 1'-0" 1'-0" 1'-0"
12'-0"
MIN
"Z" SECTION STEEL SHEET PILE WALL PZ27
ASTM A 572 GRADE 50
EQ EQ
2'-0"
MAX TYP
6" CONC. LINING
6" CONC. LINING
TYPE "A" WEEP HOLES PER SHEET 22 AT 12'-0" HORZ.
SPACING, CENTERED ON NEW SHELF LINING (TYP. AT NEW
SHELF LINING)
2'-0"
6" CONC.
LINING
#5 @ 13" (TYP)
20'-0" 20'-0" TYPICAL PROPOSED BOTTOM WIDTH
1V:30H 1V:30H
STEEL SHEET PILE FLUSH
W/ TOP OF CONC.
EQ EQ
D
AT 12'-0" HORIZ. SPACING
(TYP. IN NEW SLOPE LINING)
D
D
AT 12'-0" HORIZ. SPACING
(TYP. IN NEW SLOPE LINING)
F
A
A
PP
R O
VE
D
C H
EC
K
ED
PR
EP
A R
ED
D
ES
C R
IP
TI
O N
R
EV
D A
TE
A
PP
R
B R
A
YS
B A
YO
U
M A
JO
R
R
EP
A
IR
S
D
0-
-0 0-
X1
SCALE:
DATE:
OF
SHEET NUMBER
ww w.
hu itt-zo lla rs.
co m
0 R ich mo nd
A ve nu e, Su ite
Ho us ton , T ex as
2-
1.4
.00
D D
J
B P
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P
10/28/2025
TYPICAL PROPOSED SECTION
MACGREGOR SITE LOOKING UPSTREAM
SCALE: NOT TO SCALE17
A
M A
C G
R
EG
O R
P R
O
PO
SE
D
C R
O
SS
S
EC
TI
O
N
AS SHOWN
BRAYS BAYOU FEDERAL REACH 3; 40-FT DESIGN BOTTOM WIDTH
ROBERT G. POWELL
102329L I C E N S E D
PRO FE S S I O N A L E NG IN
EE
R
S
T A T E O F T EX A S
Huitt-Zollars Inc.
R O
VE
D
C H
EC
K
ED
PR
EP
A R
ED
D
ES
C R
IP
TI
O N
R
EV
D A
TE
A
PP
R
B R
A
YS
B A
YO
U
M A
JO
R
R
EP
A
IR
S
D
0-
-0 0-
X1
SCALE:
DATE:
OF
SHEET NUMBER
ww w.
hu itt-zo lla rs.
co m
0 R ich mo nd
A ve nu e, Su ite
Ho us ton , T ex as
2-
1.4
.00
D D
J
B P
R G
P
10/28/2025
AS SHOWN
R
EP
A
IR
D
ET
A
IL
S
O F
ROBERT G. POWELL
102329L I C E N S E D
PRO FE S S I O N A L E NG IN
EE
R
S
T A T E O F T EX A S
Huitt-Zollars Inc.
R O
VE
D
C H
EC
K
ED
PR
EP
A R
ED
D
ES
C R
IP
TI
O N
R
EV
D A
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A
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B R
A
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B A
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M A
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A
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0-
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X1
SCALE:
DATE:
OF
SHEET NUMBER
ww w.
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co m
0 R ich mo nd
A ve nu e, Su ite
Ho us ton , T ex as
2-
1.4
.00
D D
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B P
R G
P
10/28/2025
AS SHOWN
R
EP
A
IR
D
ET
A
IL
S
O F
ROBERT G. POWELL
102329L I C E N S E D
PRO FE S S I O N A L E NG IN
EE
R
S
T A T E O F T EX A S
Huitt-Zollars Inc.
R O
VE
D
C H
EC
K
ED
PR
EP
A R
ED
D
ES
C R
IP
TI
O N
R
EV
D A
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A
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B R
A
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B A
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M A
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A
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D
0-
-0 0-
X1
SCALE:
DATE:
OF
SHEET NUMBER
ww w.
hu itt-zo lla rs.
co m
0 R ich mo nd
A ve nu e, Su ite
Ho us ton , T ex as
2-
1.4
.00
D D
J
B P
R G
P
10/28/2025
AS SHOWN
R
EP
A
IR
D
ET
A
IL
S
O F
ROBERT G. POWELL
102329L I C E N S E D
PRO FE S S I O N A L E NG IN
EE
R
S
T A T E O F T EX A S
Huitt-Zollars Inc.
R O
VE
D
C H
EC
K
ED
PR
EP
A R
ED
D
ES
C R
IP
TI
O N
R
EV
D A
TE
A
PP
R
B R
A
YS
B A
YO
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M A
JO
R
R
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A
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S
D
0-
-0 0-
X1
SCALE:
DATE:
OF
SHEET NUMBER
ww w.
hu itt-zo lla rs.
co m
0 R ich mo nd
A ve nu e, Su ite
Ho us ton , T ex as
2-
1.4
.00
D D
J
B P
R G
P
10/28/2025
LOOKING UPSTREAM
AS SHOWN
R
EP
A
IR
D
ET
A
IL
S
O F
ROBERT G. POWELL
102329L I C E N S E D
PRO FE S S I O N A L E NG IN
EE
R
S
T A T E O F T EX A S
Huitt-Zollars Inc.
R O
VE
D
C H
EC
K
ED
PR
EP
A R
ED
D
ES
C R
IP
TI
O N
R
EV
D A
TE
A
PP
R
B R
A
YS
B A
YO
U
M A
JO
R
R
EP
A
IR
S
D
0-
-0 0-
X1
SCALE:
DATE:
OF
SHEET NUMBER
ww w.
hu itt-zo lla rs.
co m
0 R ich mo nd
A ve nu e, Su ite
Ho us ton , T ex as
2-
1.4
.00
D D
J
B P
R G
P
10/28/2025
AS SHOWN
H C
FC
D
C O
N C
R
ET
E
LI
N
IN
G D
ET
A
IL
8 MIN. IN
SIEVE NO.
SIEVE NO.
1/4 IN
MAX. OPENMIN. OPEN
b.
WEIGHT
MAX. AOS
MIN. AOS
d.
1/8 IN
c.
NO. 8
NO. 4
3/8 IN
3/4 IN
1 IN
PIPE: 4 INCH DIA. SCH. 40 PVC
MATERIALS:
WEEP HOLE NOTES:
DRAIN GRAVEL: SIEVE SIZE FINER
HARDWARE CLOTH:
FILTER FABRIC:
CONCRETE LINING
STAIR DETAIL
GRADE BEAM DETAIL
(SEE NOTE 6)
PIPE OUTFALL DETAILS
(FOR RCP OUTFALLS 42 INCH DIA. AND LESS)
RISER
TREAD
TOE OF SLOPEPLAN
O.C. (EACH LAYER)
WEEP HOLE
LINING. (SEE TYP. CHANNEL
TYPICAL TRAPEZOIDAL CHANNEL LINING
TOP OF CHANNEL LINING
STAIRS TO BE INSTALLED
AT LOCATIONS SHOWN
ON PLANS.
TOEWALL AT UPSTREAM AND
DOWNSTREAM ENDS OF
LINING. (SEE TYP. CHANNEL
LINING DETAIL).
TOEWALL AT TOP OF CHANNEL
GRADE BEAM-SEE DETAIL
BO
TT
O M
W
ID
TH
TYPE "B"
PLAN
REINF. STEEL
SYMMETRICAL
CL
WEEP HOLE DETAILS
SECTION
CONCRETE CHANNEL
BOTTOM
SEAL SLAB
SEE NOTE 5.
8.
7.
4 FT. MIN.
1.
2.
3.
4.
5.
6.
FT
DRAIN GRAVEL
FT
3 FT.
IN
15 # ROOFING FELT
PLAN
FT
DRAIN GRAVEL
4 IN.
1 FT.
FT
.4 IN. DIA. PVC
SECTION
1 FT.
FILTER FABRIC
TYPE "B" WEEP HOLE
SECTION
FILTER FABRIC
IN
FT
DRAIN GRAVEL
1 FT. 2 FT. 1 FT.
C
3 FT.
FT
IN
1 FT. 1 FT.
DRAIN GRAVEL
FILTER FABRIC
TYPE "A" WEEP HOLE
SECTION
CONC. CHANNEL
SEAL SLAB
ABOUT
A
A
15 # ROOFING FELT
15 # ROOFING FELT
TYPE "C" WEEP HOLE
L
1.
a.
SEE NOTE 12
ALL AROUND
1 FT.
2. CUT WEEP HOLE PIPE FLUSH WITH CONCRETE SURFACE.
THICKENED AREA
EXTENT OF
NOTES:
CL
15 FT.
TOP OF CHANNEL LINING
IN.
IN.
2 FEET
LINING DETAIL.)
4 IN. DIA. PVC
12 INCHES #4 BARS
OZ/SY
3. TYPE "A" AND "C" WEEP HOLES FOR TYPICAL RECTANGULAR
CONCRETE CHANNEL LINING. TO BE STAGGERED.
TY
P.
SEE NOTE 9.
15 # ROOFING FELT
6 IN. 6 IN.
100 MIN
70 MAX
6 0Z. MIN
TYPICAL CHANNEL LINING DETAIL
2 FT.
1 AND 2.
SEE NOTES
TYPE "B" WEEP HOLE.
MID-SLOPE LINING
PILOT CHANNEL
(SEE TABLE
ONE BELOW)
OPTIONAL
BOTTOM WIDTH
IN
KEYED JOINT.
1 FT.
1 AND 2.
A
SEE NOTES
HALF SECTION
IN
INCHES SEE TYP.
DETAIL A
SEE DETAIL A.
CHANNEL LINING DETAIL.
TOP OF BANK LINING
M
ATCH LINE "A"
CHANNEL LINING HALF SECTION
TYPICAL RECTANGULAR CONCRETE
M
ATCH LINE "A"
0 - 60
20 - 90 70 - 100
9.
SEE WEEP HOLE DETAILS.
TOEWALL UPSTREAM
& DOWNSTREAM.
TRIM PIPE FLUSH
WITH CHANNEL
LINING AS DIRECTED
BY THE ENGINEER 10.
SEE NOTE 10.
STRUCTURAL CONCRETE FOR CONCRETE CHANNEL LINING AND NONSTRUCTURAL CONCRETE FOR SEAL SLAB SHALL BE IN
ACCORDANCE WITH SPECIFICATION SECTION NO. 03310-CONCRETE.
REINFORCING STEEL SHALL BE IN ACCORDANCE WITH SPECIFICATION SECTION NO. 03310-CONCRETE.
EXCAVATION AND BACKFILL FOR CONCRETE CHANNEL LINING SHALL BE IN ACCORDANCE WITH SPECIFICATION SECTION NO.
02316-STRUCTURAL EXCAVATING AND BACKFILLING.
RIPRAP SHALL BE IN ACCORDANCE WITH SPECIFICATION SECTION NO. 02378-RIPRAP AND GRANULAR FILL.
A NON-REINFORCED 4 INCH MINIMUM NONSTRUCTURAL CONCRETE SEAL SLAB IS REQUIRED BENEATH THE BOTTOM OF
CONCRETE CHANNELS.
STRUCTURAL CONCRETE GRADE BEAMS SHALL BE INSTALLED TRANSVERSELY AT 20 FOOT MAX. CENTERS ON CONCRETE
LINED CHANNELS WITH BOTTOM WIDTHS EQUAL TO OR GREATER THAN 20 FEET.
JOINTS:
A. PLACE CONSTRUCTION JOINT IN CONCRETE LOW-FLOW, TRAPEZOIDAL BOTTOM SECTIONS AND SLOPES AT 20 FOOT
MIN., SPACING CONTINUOUSLY THROUGH CHANNEL LINING.
B. PLACE EXPANSION JOINT IN CONCRETE LOW-FLOW, TRAPEZOIDAL BOTTOM SECTIONS, AND SLOPES AT 60 FOOT MAX.
SPACING CONTINUOUSLY THROUGH CHANNEL LINING.
CEMENT STABILIZED SAND SHALL BE PROVIDED AND PLACED IN ACCORDANCE WITH SPECIFICATION SECTION NO. 02321
-CEMENT STABILIZED SAND.
DELETE 2 FT FLAT EDGE WHEN LINING IS BELOW TOP OF BANK. SEE MID-SLOPE LINING DETAIL.
UPSTREAM AND DOWNSTREAM TOE WALL 3 FOOT MIN. DEPTH AT BOTTOM OF SLOPE AND 8 INCHES THICK.
MINIMUM #4 BARS (GRADE 60) AT 12 INCHES ON CENTER EACH WAY.
VARIES BASED ON SIDE SLOPE. MINIMUM 1 FOOT VERTICAL AT TOE OF SLOPE.
FOR RCP OUTFALLS 48 INCHES DIA. AND LARGER, USE HEADWALL/WINGWALL DETAIL AS CALLED FOR ON PLANS.
(TYP.)
C CHANNELL
FT
1 FT.
15 # ROOFING FELT
CLOTH
HARDWARE
CLOTH
HARDWARE
HARDWARE CLOTH W/HARDWARE CLOTH
4 IN. PVC PIPE
OVER END.
NON-WOVEN GEOTEXTILE
11.
FT
TYPE B WEEP HOLE.
TYPE A WEEP HOLE.
SEE WEEP HOLE DETAILS.
SEE WEEP HOLE DETAILS.
4 IN. DIA. PVC PIPE
IN
IN
IN
IN
CL
SECTION
IN
IN
IN
IN
IN
4 IN. DIA.
IN
ELEVATION
APPLY CONST. ADHESIVE
TO FILTER FABRIC TOP &
BOTTOM CONTINUOUSLY
PVC PIPE
12 IN.6
IN
C
SEE NOTE 5.
SEAL SLAB
CHANNEL
BOTTOM WIDTH
PILOT CHANNEL
(SEE TABLE ABOVE)
L
BOTTOM WIDTH
BW < 12 FT
BW = 12 FT - 20 FT
BW > 20 FT 8 FT
6 FT
FLAT BOTTOM
PILOT CHANNEL WIDTH
FT
OPTIONAL
KEYED JOINT.
SEE DETAIL B.
M
ATCH LINE "A"
IN. SEE TYP.
CHANNEL LINING DETAIL.
TYPE B WEEP HOLE
AT 15 FT. O.C.
SEE WEEP HOLE
DETAILS.
TYPE C WEEP HOLE
AT 15 FEET O.C. SEE
WEEP HOLE DETAILS.
DETAIL B
12.
TRIM PVC FLUSH
TO FINISH CONCRETE
SEE STORM SEWER &
RIPRAP DETAIL SHEET
GEOTEXTILE TYP.
FT.3 MIN
TYPE "A"
WEEP HOLE (TYP.)
15 FT.
EX
IS
TI
N
G
8 IN X 3 FT MIN
M
IN
5 MIN
8 MIN. IN.
SEAL SLAB
SEE NOTE 5.
SPECIFY REINFORCING
STEEL, SEE NOTE 11. 2 FT.
3 FT.
SPECIFY REINFORCING
STEEL, SEE NOTE 11.
5 MIN
FT
VARIES
IN
IN.
TYPE A WEEP HOLE
AT 15 FEET O.C.
SEE WEEP HOLE DETAILS.
8 IN X 2 FT MIN
THICKNESS 5 MIN IN.
FT
M
IN
FT
M
IN
REINFORCING STEEL,
SEE NOTE 11.
1 FT-6 IN. MIN.
FT.1 MIN
SPECIFY REINFORCING
STEEL, SEE NOTE 11.
SPECIFY REINFORCING
STEEL, SEE NOTE 11.
M
IN
FT.4 MIN.
FT.4 MIN.
IN.5 MIN.
IN.8 MIN.
FT
M
IN
FT
M
IN
IN.8 MIN.
SPECIFY REINFORCING
STEEL, SEE NOTE 11.
M
ATCH LINE "A"
2 M
IN. FT.
TOEWALL UPSTREAM
& DOWNSTREAM
1 AND 2.
SEE NOTES
5 MIN. IN.
FT
M
IN
12" MIN.
CONNECTION TO EXISTING CONCRETE
EXIST. STEEL
EMBEDMENT DEPTHNEW #5 IN CENTER
OF CONC. LINING
(TYP)
INSTALL NEW REINFORCED CONCRETE LINING
REMOVE EXISTING CONCRETE AND REBAR &
EXISTING CONCRETE
SAWCUT
FULL DEPTH
DRILL EXISTING CONCRETE AND EPOXY GROUT IN PLACE 24" LONG #5 REBAR DOWELS @
18" O.C.; EMBEDMENT DEPTH SHALL BE AS PER EPOXY MANUFACTURER TO FULLY
DEVELOP THE SIZE/GRADE REBAR. CONTRACTOR TO SUBMIT MANUFACTURER'S PRODUCT
DATA FOR EPOXY GROUT PER SPECIFICATION SECTION No. 01330.
1'-0"
6"
10"
45°
USE #8 X 12" DOWELS @ 18" O.C. WITH 6" EMBEDMENT AND NO EPOXY @ EXPANSION JOINTS.* USE EXPANSION JOINTS IN LIEU OF CONSTRUCTION JOINTS WHERE DIRECTED BY ENGINEER.*
5 MIN. IN.
TOP OF CHANNEL
LINING
WHEN PLACING THROUGH EXISTING
CHANNEL LINING, SAW-CUT FULL
DEPTH AND REMOVE 4 FEET ALL
AROUND.
SPECIFY REINFORCING
STEEL, SEE NOTE 11.
8 MIN
6 INCH
MIN
TYP.6 IN.
2 IN.
5 IN.
8 IN.
13.
BAR SIZE #
LAP - SPLICE -
1 FT. 9 IN.
2 FT. 2 IN.
2 FT. 7 IN.
3 FT. 5 IN.
4 FT. 6 IN.
5 FT. 8 IN.
7 FT. 3 IN.
MINIMUM
LENGTHS
6 INCH
SEE NOTE 8.
FOR STRUCTURAL BACKFILL MATERIAL PER SPECIFICATION SECTION 2316, USE CONCRETE COARSE AGGREGATE ASTM C33
SIZE NO. 467. LIMESTONE AND RECYCLED CONCRETE NOT ALLOWED.
CONCRETE CHANNEL LINING PLACED ON CHANNEL OR BASIN SIDE SLOPES MAY BE 5 INCHES OR 6 INCHES IN THICKNESS. THE IFC PLAN SETS FOR EACH SPECIFIC PROJECT SITE WILL CALL OUT THE THICKNESS FOR THAT SPECIFIC PROJECT SITE.
CONCRETE CHANNEL LINING PLACED IN CHANNEL OR BASIN BOTTOMS MAY BE 8 INCHES, 10 INCHES OR 12 INCHES IN THICKNESS. THE IFC PLAN SETS FOR EACH SPECIFIC PROJECT SITE WILL CALL OUT THE THICKNESS FOR THAT SPECIFIC
PROJECT SITE.
14.
IN.8 MIN
PIPE OUTFALL DETAIL
(FOR RCP OUTFALLS 42 INCH DIA. AND LESS)
SEE NOTE 14.
SEE NOTE 14
EXISTING
EXISTING
MATCH
EXISTING
MATCH
EXISTING
MATCH
EXISTING
MATCH
15.
16.
#15
SEE NOTE
#16
SEE NOTE
CONTINUOUS DRAINAGE
GEOCOMPOSITE WITH 8 OZ.
NON-WOVEN GEOTEXTILE.
CONTINUOUS STEEL
6 IN.
1 FT.
FILTER FABRIC
SEE WEEPHOLE
NOTE d.
CONSTRUCTION JOINT
3/4 IN. BITUMINOUS
CENTER DOWEL HORIZONTALLY ON JOINT.
EXPANSION JOINT BARS SHALL BE HELD PARALLEL TO THE FINISHED
1.
2.
CONCRETE THICKNESS (D) DOWEL DIA.
5" - 6" 3/4" 7" - 8" 1"
9" AND UP 1 1/4"
SMOOTH EXPANSION JOINT DOWELS
CONCRETE SURFACE.
SMOOTH BAR
9"
D /2
D /2
DOWEL TYPE EXPANSION JOINT
DOWEL AT
12" C-C
HEAVY PLASTIC
OR STEEL TUBE
3/4" GAP
(ALLOWS DOWEL
BAR TO MOVE)
9" 18"
D
FILTER FABRIC. SEE
WEEP HOLE NOTE d.
9 3/4"
EXPANSION
BOARD
1 FT.
BITUMINOUS
EXPANSION
BOARD
3/4 IN.
6"
THE EXTENT OF THICKENED AREA AROUND PIPE OUTFALLS WILL BE PAID AS THE SPECIFIED CHANNEL LINING THICKNESS FOR
THE ADJACENT CHANNEL LINING.
17.
SEE NOTE 17.
ROBERT G. POWELL
102329L I C E N S E D
PRO FE S S I O N A L E NG IN
EE
R
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T A T E O F T EX A S
Huitt-Zollars Inc.
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GRANULAR FILL
SEE SPECIFICATION SECTION NO. 02365-STABILIZED CONSTRUCTION ACCESS.
GEOTEXTILE FOR FULL
WIDTH AND LENGTH OF
STABILIZED CONSTRUCTION
CONSTRUCTION NOTES:
1.
STABILIZED CONSTRUCTION ACCESS
SYMBOL
GRADED TO PREVENT
SEDIMENT FROM
PROVIDE APPROPRIATE TRANSITION
BETWEEN STABILIZED CONSTRUCTION
ACCESS AND EDGE OF ROADWAY.
8 INCHES MINIMUM
50 FT. MAX. 50 FT. MAX.
R O
AD
W
AY
1. SEE SPECIFICATION SECTION NO. 02361-SILT FENCES.
REINFORCED SILT FENCE
EXTEND SILT FENCE FABRIC
FLOW
SILT FENCE FABRIC
INTO TRENCH.
SUPPORT
IN
GRID MESH
SYMBOL
RSF
NOTE:
3. ATTACH SILT FENCE FABRIC TO
WIRE FENCE AND EXTEND INTO
THE TRENCH.
4 IN. X 6 IN. TRENCH UPSLOPE
ALONG LINE OF SUPPORTS.
1. SET SUPPORTS AND EXCAVATE
EXCAVATED SOIL.
4. BACKFILL AND COMPACT THE
2. SECURE WIRE FENCING TO SUPPORTS.
OF SLOPE
SLOPE OR NORMAL
SODDING
PROP. TOP OF SLOPE
SOD
PROP. TOP
SOD
FT.
50 FT.
AS NEEDED
BACKSLOPE SWALE
INTERCEPTOR STRUCTURE AND
INLET PROTECTION (SEE DETAIL "D").
TWO ROWS STAGGERED
SOD PANELS (TYP.)
FLOW
PROP. TOE OF
WHERE NO BACKSLOPE SWALE
EXISTS OR FOR PAVED CHANNEL,
DETAIL "A"
PLACE A DOUBLE ROW OF SOD
SECTION
A SECTION
D
PLAN SECTION
REINFORCED SILT FENCE
6 FT. MAX FOR REINFORCED FENCE.
SPACING
PANELS AT TOP OF SLOPE.
FLOW FLOW
STRUCTURE
IN
TERCEPTOR
FOUR ROWS
SO
D
SO
D SO
D
SO
D SO
D
SO
D SO
D
SO
D
SOD
SOD
SOD
SOD
INTERCEPTOR STRUCTURE
& INLET PROTECTION
STAGGERED
ACCESS.
WATER SURFACE
4 IN.
SEE DETAIL "A"
SEE DETAIL "A"
DETAIL "B"
PLAN
SEE DETAIL "B".
"U"
AS NEEDED
IN
. SOD PANELS
STAGGERED
TWO ROWS
SOD PANELS
IN
SOD
SYMBOL
R O
AD
W
AY
SOD
SOD
SOD
SOD
WIRE OR PLASTIC
IP
SYMBOL
OF SLOPE
PROP. TOE
STAGGERED MIN. TWO ROWS
SOD PANELS (TYP.)
IN
24 IN. 48 IN.
DETAIL "C"
PANELS (2 MIN.)
STAGGERED SOD
STAPLES "U" STAPLES
SOD
ROLLS
"U" STAPLES
48 IN.
"U" STAPLES
INTERVALS
FT.
20 50 FT.
INTERVALS
20 FT. MAX. 20 FT. MAX.
20 FT. MAX.
FOR SOD ROLLS, 24 INCHES WIDE,
PLACE STAPLES ON 48 INCH CENTERS
NEAR THE EDGES. STAGGER STAPLES
ON OPPOSING SIDES. PLACE ADDITIONAL
STAPLES IN CORNERS AT ENDS OF ROLL
AND ONE IN MIDDLE AT BOTH ENDS
OF ROLL.
PROVIDE STAPLES PER SPECIFICATION
SECTION NO. 02922-SOD.
SOD ROLL AS SHOWN IN DETAIL "C"
EQUIVALENT TO TWO ROWS OF SOD
PANELS.
PLACE TWO ROWS OF SOD PANELS ALONG
EDGES OF CONCRETE PAVING AND
STRUCTURES WHERE SOIL IS DISTURBED
EXCEPT BELOW THE NORMAL WATER SURFACE.
NOTES:
F
T.
VA
R
IE
S
DETAIL "D"
EXISTING
GROUND
SWPPP / BMP SIGN AND CONSTRUCTION
SITE NOTICE HOLDER DETAILS
CSN
CSN HOLDER
1'-6"
1' -0
1' -6
45°
NOTE:
CONSTRUCT IN ACCORDANCE WITH
HCFCD SPECIFICATION SECTION
01580 - PROJECT SIGNS.
1.
2.
3.
LEAVING SITE.
M
IN
FLOW
M
IN
FLOW
FLOW
A
A
IN
M
IN
M
AX
EE
E
D
D
M
IN
SCA
4.
ROBERT G. POWELL
102329L I C E N S E D
PRO FE S S I O N A L E NG IN
EE
R
S
T A T E O F T EX A S
Huitt-Zollars Inc.
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MACGREGOR SITE PHASING - TO ADDRESS EXISTING SHELF UPLIFT AND LOW-FLOW
ROTATION ON RIGHT SIDE LOOKING UPSTREAM:
MACGREGOR SITE PHASE 1 - DIVERT NORMAL FLOW TO RIGHT SHELF TO REPLACE
EXISTING LOW-FLOW, LEFT SHELF AND LEFT SLOPE LINING:
1A. REMOVE RIGHT SHELF AND SLOPE LINING AS NECESSARY TO INSTALL 12-FT LONG
LATERAL STEEL SHEET PILE TO BOTTOM ELEVATION 12-FT BELOW PROPOSED RIGHT
SIDE TOP OF CONCRETE LINING (TOCL) ELEVATION FOR RIGHT SIDE UPSTREAM AND
DOWNSTREAM CUT-OFF WALLS.
1B. REMOVE RIGHT SHELF LINING AS NECESSARY TO INSTALL 18-FT LONG
LONGITUDINAL STEEL SHEET PILE TO BOTTOM ELEVATION 12-FT BELOW
PROPOSED RIGHT SHELF TOP OF CONCRETE LINING (TOCL) ELEVATION, LEAVING 6-FT
OF SHEET PILE ABOVE ABOVE TOCL FOR CARE OF WATER;
PROTECT AGAINST GROUNDWATER INFILTRATION INTO THE WORK AREA WITH
TEMPORARY SEAL SLAB AROUND SHEET PILE.
1C. REMOVE LOW-FLOW, LEFT SHELF, AND LEFT SLOPE LINING AS NECESSARY TO
INSTALL 18-FT LONG LATERAL STEEL SHEET PILE TO BOTTOM ELEVATION 12-FT
BELOW PROPOSED TOP OF CONCRETE LINING (TOCL) ELEVATION, LEAVING 6-FT OF
SHEET PILE ABOVE ABOVE TOCL FOR CARE OF WATER;
PROTECT AGAINST GROUNDWATER INFILTRATION WITH TEMPORARY SEAL SLAB
AROUND SHEET PILE.
1D. WHILE NORMAL FLOW IS DIVERTED TO THE RIGHT SIDE (BY PILING INSTALLED
UNDER 1B & 1C) REMOVE EXISTING LOW-FLOW, LEFT SHELF AND LEFT SLOPE LINING
AND INSTALL PROPOSED LOW-FLOW, LEFT SHELF AND LEFT SLOPE LINING WITH
WEEP-HOLES FOR HYDROSTATIC RELIEF.
MACGREGOR SITE PHASE 2 - ALOW NORMAL FLOW INTO NEW LOW-FLOW LINING:
2A. AFTER NEW CONCRETE LINING INSTALLED UNDER 1D IS COMPLETE, PROTECT
CONCRETE LINING WHILE CUTTING UPSTREAM AND DOWNSTREAM LATERAL
LOW-FLOW, LEFT SHELF, AND LEFT SLOPE SHEET PILE FLUSH WITH PROPOSED TOCL;
DISPOSE PROPERLY OF THE 6-FT OF SHEET PILE THAT WAS USED FOR TEMPORARY
CARE OF WATER.
2B. AFTER NORMAL FLOW IS RUNNING IN THE NEW LOW-FLOW LINING, PROTECT
CONCRETE LINING WHILE CUTTING LONGITUDINAL SHEET PILE FLUSH WITH
PROPOSED TOCL.
2C. REMOVE EXISTING RIGHT SHELF AND RIGHT SLOPE LINING AND INSTALL
PROPOSED RIGHT SHELF AND LEFT SLOPE LINING WITH WEEP-HOLES FOR
HYDROSTATIC RELIEF.
MACGREGOR PHASING
NTS
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ROBERT G. POWELL
102329L I C E N S E D
PRO FE S S I O N A L E NG IN
EE
R
S
T A T E O F T EX A S
Huitt-Zollars Inc.
File details come from the government source that posted it. Updated .