HomeMy WebLinkAboutRevisions; Adding Retaining Wall for Drainage PlanOFFICE USE ONLY:
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DATE FILED: 1la3 -Lk PERMIT# 1 I I O
REVISION FEE: RECEIPT #
PLANNING & DEVELOPMENT SERVICES
BUILDING & CODE REGULATION DIVISION
2300 VIRGINIA AVENUE
FORT PIERCE, FL 34982-5652
(772) 462.1553
APPLICATION FOR BUILDING PERMIT REVISIONS
PROJECT INFORMATION
LOCATION/SITE
ADDRESS: lc l 0 _T61 � � 11
DETAILED DESCRIPTION OF PROJECT
CONTRACTOR INFORMATION:
STATE of FL REG./CERT. #: ST. LUCIE CO CERT. #:
BUSINESS NAME:
QUALIFIERS NAME: \
ATITIRF4C-
CITY: STATE:
PHONE (DAYTIME): `Td 9 DS' 05FAX:
OWNER/BUILDER INFORMATION:
NAME:
ADDRESS:
CITY:
PHONE (DAYTIME:
STATE:
ARCHITECT/ENGINEER INFORMATION:
NAME: -
ADDRESS:
CITY:
PHONE (DAYTIME):
SLCCC: 9123109
Revised 06130/17
STATE:
r Ax:
ZIP:
ZIP:
ZIP:
l/
ENGINEERS 0 SURVEYORS
ENVIRONMENTAL
TECHNICAL MEMORANDUM
TO: ADAMS HOMES — CRIS MAURO
FROM: R.J. KENN:EDY — EDC INc.
SUBJECT': 5810 Tangelo Dr — Drainage Review
DATE: JULY 19, 2021
Introduction
The property located at 5810 Tangelo Dr has recently been developed as a residential
home by Adams Homes. The details of the property are listed in the following table.
Table 1-Property Details
Parcel lD .,.�,
Z.onm
3402-610-0202-000-2
0.23
RS-4
RU
Lot 17 Block 77
The home was constructed with a septic system and drain field to the east of the house
at the rear of the property. This was the only acceptable location due to an existing well
located at the adjacent property which is south of the subject property. A boundary survey
showing the . location of the well is attached to this memorandum. An inspection
conducted by Dave Johnson from St Lucie County was completed on 6/15/2021 under
permit No. 1911-0052. The inspection notes that, storm water runoff from the drain field
flows to a low area of the rear neighboring property to the: east of the subject property. A
copy of the St. Lucie County inspection report is attached to this memorandum.
This technical memorandum outlines the drainage patterns and flow lines of the newly
developed property.
Drainage Review
A boundary and topographic survey of the as -built conditions of the site was completed
by Atlantic Land Designs on 6/2/2021. The survey indicates that'the top of the drain field
mound is at an elevation of 19.2 NAVD. The finished. floor elevation (FFE) of the house
on the subject property is at 19.10 NAVD. Even though the FFE is below the elevation of
I
the drain field, a. swale in between the drain field and the house is at elevations ranging
from 18.3 NAVD to 18.5 NAVD. Side lot swales to the north and south of the house show
that site grading follows a westerly flow. Elevations on the eastern property corners range
from 17.1 NAVD to 17.6 NAVD, while elevations in the side lot swales decrease to 15.5
NAVD and 15.6 NAVD at the respective property corners. These elevations depict a
stormwater flow that will direct runoff away from the house and into the swales located in
the Tangelo Rd right-of-way. As such, stormwater runoff is not anticipated to cause
adverse effects to the newly developed home.
A review of the adjacent properties finished floor elevations conclude that the finished
floor elevation of the newly developed home is consistent with the finished floor elevations
of the surrounding lots. The following table outlines the FFE's of the adjacent properties.
Table 2-Adjacent Properties Finished Floor.Elevations
't
Relative Location
Fi nislied Floor
Adjacent Properties
o Subject Troperty
Elevations
,
Lot 13 Block 77
4 Lots to the North
19.72
Lots 14-16 Block 77
Directly North
Vacant
Lot 37 and 36 Block 77
Directly East
19.94
Lot 18 Block 77
Directly South
19.26
Due to the rear and side lot swale having elevations ranging from 15.5 NAVD to 17.0
NAVD, stormwater runoff is expected to flow away from the structures and into the swale
located in the Tangelo Rd right-of-way. As such, flooding of the adjacent homes is not
anticipated.
A site visit was completed by Engineering Design and Construction on 7/8/2021, which
indicates that the site grading is consistent with the provided survey. Additionally, the
slopes from the drain field to the eastern property line are maintainable and do not
represent a hazard.
Due to the absence of rear drainage easements, no stormwater runoff from the subject
property can legally enter adjacent lots. It is the recommendation of Engineering Design
and Construction that a retaining wall be constructed along the rear and side lot line. The
retaining wall shall have an elevation of at least 19.50 NAVD to divert stormwater away
from the rear lot and into the side lot swales. The side lot swales will convey stormwater
to the Tangelo Dr right-of-way. The property owner shall obtain the services of a
professional structural engineer to design the retaining wall. Attached to this report is a
diagram which shows the size and location of the retaining wall.
D2.1
We fRekWN' t{ j�spection comments have been fully addressed
qu000- NN please contact our office.
No. 56218 �
.� O� e
2I
10250'SW Mil!
Port St Lucie,
Attachments:
56218 Dab
arkway, Suite 201
34987 (772) 462-2455
• Boundary and Topographic Survey with Well Setback
• Boundary and Topographic Survey of As -Built Conditions
+ St Lucie County Inspection Report
• Retaining Wall Exhibit
If you have any
DocuSign Envelope ID: 3AEE1 D97-4E4C-4B2B-A570-291 E31 BA3593
LEGAL DESCRIPTION:
(Supplied by Client)
LOT 17 IN BLOCK 77 OF INDIAN RIVER
ESTATES UNIT NINE , ACCORDING TO THE
PLAT THEREOF AS RECORDED IN PLAT BOOK
10, PAGE 74, OF
THE PUBLIC RECORDS OF ST. LUCIE COUNTY,
FLORIDA.
ABBREVIATIONS:
SET = SET 5 8" IRON REEIIBAR WITH
YELLOW CAP MARKED "PSty15543
FD = FOUND
5 8 IRON REBAR
IGHM WAY
=MEASURED
P = 'PLATTED
C = CALCULATED
L = LENGTH OF CURVE
D= DELTA OF CURVE
FFE = FINISHED FLOOR �ILEVATION
OH -OH -OH- = OVERHEAD IRES
X-X-X- = CHAINLINK FENCE
0-0-0 PLASTIC FENCE
0-0-0- = WOOD FENCE
CONIC. =' CONCRETE
C.P.= CONCRETE PAD
Coy.= COVERED
® METER ® CABLE/PHONE
BOX
® POWER
POLE
DRAINAGE PROPOSED
AND EXISTING
x\V-
FIRE
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SURVEYORS NOTES:
1, UNLESS OTHERWISE NOTED ONLY PLATTED EASEMENTS ARE SHOPSE
HEREON,
2, ALL LOT DIMENSIONS SHOWN ARE PER PLAT UNLESS OTHER SHOWN.
3. NO UNDERGROUND UTILITIES OR IMPROVEMENTS WERE LOCATED UNLESS
OTHERWISE SHOWN. .
4, THIS SITE LIES WITHIN FLOOD INSURANCE RATE MAP ZONE X MAP#
12111CO28IJ DATED: 2-16-12.
5. FLOOD ZONE SHOWN HEREON IS AN INTERPRETATION BY THE SURVEYOR
AND IS PROVIDED AS A COURTESY. THE FLOOD ZONE SHOULD BE VERIFIED
BY A DETERMINATION AGENCY.+
6. BEARINGS SHOWN HEREON ARE BASED ON THE CENTER LINE OF
TANGELO DRIVE AS BEING N90-00-00"E ACCORDING TO THE PLAT
DESCRIBED HEREON.
7. P.U.D.E. DENOTES PUBLIC UTILITIES AND DRAINAGE EASEMENT,
e U.E. DENOTES UTILITY EASEMENT.
g 8. THE ACCURACY OF THIS SURVEY IS PREMISED ON THE EXPECTED USE OF
THE SURVEY. THE EXPECTED USE/PURPOSE OF THIS SURVEY IS HOME
CONSTRUCTION ACCURACY=1 FOOT IN 7.600 FEET OR BETTER
9. ADDITIONS OR DELETIONS TO THIS SURVEY MAP BY ANYONE OTHER THAN
THE SIGNING SURVEYOR IS PROHIBITED WITHOUT WRITTEN CONSENT.
-CITY WATER & SEPTIC
ALL ELEVATIONS SHOWN HEREON ARE BASED ON NORTH AMERICAN VERTICAL DATUV OF 1988 (N.A VA'88)
LOT 13 BLOCK 77
F.F.E. = 19.72
LOTS 14 - 16 BLOCK 77
VACANT LAND
S 90000,00" w 125.00' x`6ry
❑ \0A 4277' \�0+c
46.01' a _
h y I I
3250° 1
"�-
298 3.91' T
x\��'
DRAINI 'fix
I \
`1
28.92'
o
10.16'
1
I FIELD I
W
13.34'
\�h
CONIC:
1 STORY CONC. BLOCK
Dwy: AY
N F.F.E. = 19.10'
x\
53.35'
\��'
42.74'
'TOUrD \x o
NAIL \h•
0 o II
N IN
II
CS cS
FOIJtp BARTOW STREET
NAIL
REVISION - 6/8/21 - FINAL TOPO
REVISION - 5/29/20 - REVISE DRAINAGE PLAN
0
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O N
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(W
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W r=
0 �+
90°00'00"e 125t0' \fix FENCE CORNER ��
� PROPERTY CORNER
x�0h \0A
LOT 18 BLOCK 77 x
F.F.E. = 19.26
5810
Tangelo Drive
SCALE: 1 "=30'
Atlantic Land Designs
of the Treasure Coast, LB7468
754 NE Jensen Beach Blvd. Jensen Beach, FL 34957
Mailing Address:
P.O. Box 1421 Jensen Beach, FL 34958
ALD5543@gmail.com (772) 398-4290
DATE:5/9/19
DRAWN: j C
2019-0322
DATE:
REVISIONS
2118120
FORP BOARD TIE I
3 24 20
2 D FORM BOARD TIE I
LAST FIELD DATE:6/2/21
Certified to:
orthWes
(321) 751-1
I hereby certify that the survey sho*n hei
and iN�4133808AWFD4C1
al measurements taken
5,M11DOeu59ned by:
s,
f,1-sirb
...
eon is true and correct
in the field.
NOT VALID WITHOUT AN AUTHENTICATED ELECTRONIC
SIGNATURE AND AUTHENTICATED ELECTRONIC SEAL
PSM 5543
STATE OF
EJ ■
LEGAL DESCRIPTION:
(Supplied by Client)
LOT 17 IN BLOCK 77 OF INDIAN RIVER
ESTATES UNIT NINE , ACCORDING TO THE
PLAT THEREOF AS RECORDED IN PLAT BOOK
t0, PAGE 74. OF
THE PUBLIC RECORDS OF ST. LUCIE COUNTY,
FLORIDA.
ABBREVIATION
=,SET 6/8-IRON REBAR MITI
FD = FOUND 6/8 IRON REBI
IGHT OF WAY
P MEASURED
P =PLATTED
C - CALCULATED
L = LADIUS OF CURE
ENGTH OF CURVE
D= DELTA OF CURVE
FFE = FINISHED FLOOR ELE
OH -OH -OH- = OVERHEAD WII
X-X-X- = CHAINLINK FENCE
0-0-0-= PLASTIC FENCE
0-0-0- = WOOD -FENCE
CONIC. = CONCRETE
C.P.= CONCRETE PAD
Coyy�.= COVERED
EB 4ATTER ER ® CABLE/PHONE
BOX
® POWER
POLE
-V1_-= DRAINAGE PROPOSED
AND EXISTING
ION
I
PERMIT:
4�
1911-0052
I
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CO C
DRIYE'�1AY
F'I LBAURTOW STREET
NAIL
REVISION - 6/8/21 - FINAL TOPO.
REVISION - 6/29/20 - REVISE DRAINACF PLAN
SURVEYORS NOTES:
LEGAL DESCRIPTION
,
1, UNLESS OTHERWISE NOTED 0 LY PLATTED EASEMENTS ARE SHO HEREON.
2. ALL LOT
INDIAN RIVER ESTATES -UNIT 09-BLK 77 LOT 171MAP 3N11 Sj
SECTION 34 TOWNSHIP 3550UTH, RANGE 4D EAST
,,
DIMENSIONS SH 11 j ARE PER PLAT UNLESS OTHER ISE SHOWN.
PARCEL IO#: 3402�10-0202-000.2
3: NO UNDERGROUND UTILITIES OR IMPROVEMENTS WERE LOCATED UNLESS
OTHERWISE SHOWN
PROJECT NAME: ADAMS HOMES -SBIO TANGELO DR
4. THIS SITE LIES WITHIN FLOOD INSURANCE RATE MAP ZONE X MAP#
OWNER: ADAMS HOMES OF NORTHWEST FLORIDA INC
ENGINEERS 0 SURVEYORS
12111CO28IJ DATED: 2-16-12.
3000 GULF BREEZE PKWY
GULF BREEZE, FL 32583
ENVIRONMENTAL
5. FLOOD ZONE SHOWN HEREON IS AN INTERPRETATION BY THE SURVEYOR
x 10250 VILLAGE PARKWAY
AND IS PROVIDED AS A COURTESY, THE FLOOD ZONE SHOULD BE VERIFIED
xSUITE 201
BY A DETERMINATION AGENCY.+
THIS DRAWING WAS PRODUCED USING THEATLANNC LAND DESIGNS BOUNDARY
SURVEY COMPLETED ON 2 JUNE 2021
PORT ST. LUCIE, FL 34987
6. BEARINGS SHOWN HEREON ARE BASED ON THE CENTER LINE OF
1' 772A62-2455
TANGELO DRIVE AS BEING N9000`OD-E ACCORDING TO THE PLAT
sw w.eaunacom
DESCRIBED HEREON:
7, P,U.D.E. DENOTES PUBLIC UTILITIES AND DRAINAGE EASEMENT,
U.F- DENOTES UTILITY EASEMENT.
FLB. CER FlFIC— FAU11l UAONeWeu
q B. THE ACCURACY OF THIS SURVEY IS PREMISED ON THE EXPECTED USE OF
THE SURVEY, THE EXPECTED USE/PURPOSE OF THIS SURVEY IS HOME
CONSTRUCTION ACCURACY=1 FOOT IN 7.500 FEET OR BETTER
9. ADDITIONS OR DELETIONS TO THIS SURVEY MAP BY ANYONE OTHER THAN
THE SIGNING SURVEYOR IS PROHIBITED WITHOUT WRITTEN CONSENT,
_
.2 5 H 5
-. - -CITY WATER & SEPTIC
ALL ELEVATIONS SHOWN HEREON ARE BASED ON NORTH AVENCAN VERTICAL DATUIV! OF 1988 (N.AYD.'88)
LOT 13 BLOCK 77
F.F.E. = 19.72
LOTS 14 — 16 BLOCK 77
1 VACANT LAND ti
S 90.00 00RW 125.001 xb
4Z77' \0
I I
� I {
10,
2.98 3,9l' !X
i < DRAIN
q`Y
FIELD
ORY CONC. BLOCK
rTt-_SF-F.E
�3 5 J
6
CD
. = 19.11y
k
�
q
90,001001V 125:-0'
;Ray %\ea
LOT 18 BLOCK 77
1D'
F.F.E. = 19.26 -
5810
Tangelo Drive
SCALE: 1 "=30'
Atlantic Land Designs
Dt the Treasure Coast, L87468
754 NE Jensen Beach BIYd. Jensen Beach, FL 34957
Mailing Address:
P.O. Box 1421 Jensen Beach, FL 34958
ALD5543@gmaii.com (772) 398-4290
DATE :5 9 19
/ /
DRAWN: ) C
2019-0322
DATE.:
REVISIONS
2 8 20
fUlikl BOARD. TIE I
3 24 20
2 D Wlihl BOARD TIE I
LAST FIELD DATE:6/2/21
Cert i I ied to: Adams Homes of Northwest Florida, Inc.
BP#
(321) 751-1530
I hereby certify that the suryey sho*n.hereon it true and correct
and is Ed an actual measurements taken in the field.
M f
D°aaS,9ded by.
PSM 5543
Cawit:5 SIV'b
A1a3808A59FD4C1...
5}�TEOF
NOT VALID WITHOUT AN AUTHENTICATED ELECTRONIC
SIGNATURE AND AUTHENTICATED ELECTRONIC SEAL
CONSTRUCT 100 LINEAR FOOT
RETAINING WALL WITH A MAXP
ELEVATION OF 19.50 NAVE)
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10250 SW VILLAGE PARKWAY -SUITE 201
PORT SAINT LUCIE, FL U987
c 772-462-2455 /
21-365
1 OF 1
91
Tangelo Drive
etaini:ng Wall Proposed Plan
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PRODUCT 1N,F0
PAVERS & SLABS
5 Paver Laying Guides
7 Paving System Installation Guide
4.. Peak Performance from Concrete Pavers
11 ` Appian Stone
16 Belgian Cobble-
7 Cambridge Cobble'
20 CatalinaTM
25 Catalina Grana'
29 City Series
j32 Holland Stone
36 Lafitt' Grana Slab
39 Lafitt' Rustic Slab
42 Mega-Arbel`
44 Mega -Bergerac'
47 Mega CambridgeTM
;49 Melville TM Plank
ModuLino Series,
5 Oceanside
58�',,'Old Wo'r.ld PaverTM
ing Concrete Pavement
WALLS,
85 Wall Types
87 Before You Begin
88 Estimating Base Course Mati
89 Basic Installation Constructic
103
104
105
106
107
108
109
110
111
112
Belair Wall' 2.0 Freestanding
Belair Wall, 2.0 Retaining
Castlemanor' Wall
Diamond' 9D
Diamond' 2.0
Diamond Pro"
Diamond Pro' Stone Cut
Easton Stone TM
Torpedo Base Block
Weston Stone TM
FIRE FEATURES
116
Bordeaux Series TM
119
Brighton SeriesTM
121
Bristol SeriesTM
123
Easton Fire Pit Kit
124
Weston Fire Pit KitTM
ACCESSORIES
Bullnose Coping
Fountainhead Coping
Seville Coping
LLS
WALL INSTALLATION GUIDE
85 Wall Types
87 Before You Begin
88 Estimating Base Course Materials
89 Basic Installation Construction Guide
WALLS
103 Belair Wall- 2.0 Freestanding
104 BelairWall'2.0 Retaining
105 Castlemanor' Wall
106 Diamond` 9D
107 Diamond" 2.0
108 Diamond` Pro
109 Diamond Pro Stone Cut
110 Easton Stone
111 Torpedo Base Block"
112 Weston Stone'
SEGMENTAL RETAINING WALL TYPES
Segmental retaining walls typically fall into one of three categories.
GRAVITY RETAINING WALL
The first category — a gravity wall — is a retaining wall
that does not use soil reinforcement. A gravity wall has
height limitations specific to each product. An advantage
of this type of retaining wall is that it requires a smaller
work area behind the wall.
A gravity wall relies on the weight and setback of the
block to resist the soil forces being exerted on the wall.
GEOSYNT TIC -REINFORCED
RETAINING L
The second category a geosynthetic-reinforced w
which needs to be desig d by a qualified engin . There
are (theoretically) no heigh imitations with r forced
retaining walls, and they are ed in larg pplications. It
requires more work area behin he s cture.
The block of soil is stabilized by in ducing
reinforcement layers into the s i ma behind the facing
units. The larger the stabitiz soil mass, e more soil
can be retained or held b . The geogrid i e soil
extends past the theor cal failure plane and rves
to create a large, rec ngular mass of block and it,
restraining the ret ned soil.
ANCHORPLE% SYSTEM
The third category y1-877-2-541
nchorplex system hich
offers a unique, non-ntional. solution problematic
wall construction siteis a retaining w built with
AnchorT1^ products anuctural backfi specified by
Anchor Wall Systemscked by e ineering support
tools developed by A.
Use of the Anchorpletem co pl ely eliminates
the need for the consion of a hanically
stabilized earth zone d the wa cing and requires
substantially less excon than i us Ily necessary in
geosynthetic-reinforcall cons uctio
Contact Anchor Wall Syste1-877-2 -5415 for ore information
about designing and buildih the A horplex syst
V
Filter
Q
Topsoil
Filter fabri
Levelint
85
LAST REV: MARCH 2O19
BELGARD RESOURCE GUIDE I BELGARD.COM 1 877-235-4273
Ivel fill
ase material
Tnncnil
Low -permeable
soil
Reinforced
soil zone
ynlhetic
Ircement
uramage
aggregate
I ^,,_permeable
Structural
backfill
e
BASIC INSTALLATION CONSTRUCTION GUIDE - RETAINING WALL
STAKE OUT THE WALL
• Have a surveyor stake out the wail's placement. Verify the locations with
the project supervisor.
EXCAVATION
• Excavate for the leveling pad according to the lines and grades shown
on the approved plans and excavate enough soil behind the wall for the
geogrids material, if needed.
• The trench for the leveling pad should be at least 12 inches wider than the
block you are installing and 6 inches deeper than the height of the block.
See Diagram 1.
LEVELING PAD
• An aggregate leveling pad is made of compactable base material of
3/4-inch minus (with fines).
• The pad must extend at least 6 inches in front of and behind the first
course of block and be at least 6 inches deep after compaction.
• If the planned grade along the wall front will change elevation, the leveling
pad may be stepped up in 6-inch increments to match the grade change.
Start at the lowest level and work upward whenever possible.
• Compact the aggregate and make sure it's level front to back and side to
side. Mist lightly with water before compaction. See Diagram 2.
BASE COURSE
• This is the most important step in the installation process. Bury the base
course of block.
• Begin laying block at the lowest elevation of the wall. Remove the rear lip
(if applicable) of the block by hitting from the back so that it will lie flat on
the leveling pad. See Diagram 3.
• Place first block and level, front to back and side to side: lay subsequent
blocks in the same manner.
• Place the blocks side by side, flush against each other, and make sure
they are in full contact with the leveling pad.
• If the wall is on an incline, don't slope the blocks; step them up so they
remain consistently level.
• Use string line along the back edge of block to check for proper alignment
• For multi -piece products, use the largest unit, 18 inches wide, for the
base course.
• Fit[ cores (if applicable) and voids between blocks with 3/4-inch free -
draining aggregate prior to laying the next course of block. Clean any
debris off the top of the blocks. See Diagram 4.
• Install any location devises, such as pins, prior to placing the second
course of blocks"
uiagram 1 — Excavation
Diagram 2 — Leveling Pad
uiagram 3 — Base Course
uiagram 4 — Core Fill
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CONSTRUCTION OF SUBSEQUENT COURSES
• Clean any debris off the top of the blocks.
• Place the second course of blocks on top of the base course. Maintain
running bond. Pull each block forward as far as possible to ensure the
correct setback. See Diagram 5.
• Fill cores (if applicable) and voids between blocks with 1-inch free -
draining aggregate prior to laying the next course of block. Clean any
debris off the top of the blocks.
• Backfill with 3/4-inch free -draining aggregate directly behind the block,
adding 6 inches at a time followed by proper compaction. Fill thickness
will be dependent on compaction equipment
• Add retained soil behind the aggregate. Compact before the next course
is laid.
• Don't drive heavy equipment near the wall. Setf-propelled compaction
equipment should not be used within 3 feet from the back of the wall
• Keep the wall bond by placing units in a staggered relationship to the
course beneath.
• You may need partial units to stay on bond. A saw with a diamond blade
is recommended for cutting partial units. Use safety glasses and other
protective equipment when cutting.
DRAINAGE ESIGN
• Each project is unique. The grades on your /te
l determ' eat what
level to instal he drainpipe.
• Place the drain 'pe as low as possible behiwatt s water drains
down and away om the wall into a storm dto area lower than
the wall. See Diag m 6.
• Fill in the area behi d the blocks with 3/4-in- aining aggregate, at
a minimum of 12-in es from behind the bablock or 24-inches
from the back of the ock, whichever is gre
• You may need to place nd backfM several tto achieve the proper
drainage level. See Dia ams 7 and 8.
• The drainpipe outlets s uld be spaced not an every 50 feet and
at low points of the wall. n order forthe grato function properly,
it must keep clear of reg ar soil fill. See betgram of daylight
drainage systern.
K544-
�.
Daylight drainpipe at
leas[ every 50 feet to
ensure proper drainage
Leveling pad 1 Base malerial
Diagram 5 — Next Course Construction
Diagram 6 — Drainage
Diagram 7 — Backfill
Diagram 8 — Compaction
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LAYING PATTERN AND INSTALLATION GUIDE FOR
MULTI -PIECE SEGMENTAL RETAINING WALLS
USING A PATTERN FOR SINGLE -HEIGHT RETAINING WALLS
When using a pattern, begin at one edge, laying the units as indicated. Install at
least one repeat of the pattern to establish the pattern before proceeding to the
next course. Stagger the patterns
as shown to avoid vertical bonds.
One set of 6-inch-high retaining Io-
wan blocks consists of 2 large
units, 1 medium unit and 1 small
unit, and is 2 square feet.
6" Multipiece wall system, 18-inch
by 4-foot pattern = 6 sq. ft.
i
Base Block (Typical Units)
STEPPING UP THE BASE AT LOWEST POINT
Walls built on a sloping grade require a stepped base. Begin excavation at the
lowest point and dig a level trench into the slope until it is deep enough to
accommodate the base material and height of one entire block.
At this point, step up the height of one block and begin
a new section of base trench. Continue to step up as
needed to top of slope. Always bury at least one;
full unit at each step.
STEPPING UP THE BASE USING THE U START BASE BLOCK
Walls built on a sloping grade require a stepped base. Begin excavation at the
lowest point and dig a level trench, 24 inches wide, into the slope until it is deep
enough to accommodate the base material and one entire base block.
See Diagram 9.
Shaded Area Represents Repeating Pattern
Blocks required Blocks required
6 Sets 3 Sets
12 6" x 16" 6 6" x 16"
6 6" x 10" 3 6" x 10"
6 6" x 6" 3 6" x 6"
Diagram 9 — Drainage
F 6" Minimum Compacted
Granular Base Leveling Pad
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OUTSIDE 90-DEGREE CORNERS
FOR SYSTEMS WITHOUT A CORNER UNIT
uutsloe YU-Degree Corner
without Corner Unit
BASE COURSE
Additional Courses
To build an outside 90-degree corner, begin by splitting a unit in half. Place this unit with both split faces out at the
corner. If needed, remove the rear lip so that the block lies flat. Then lay the rest of the base course working from the
corner block out.
ADDITIONAL COURSES
Begin the next course with the other half of the split unit faced in the opposite direction at the corner.
Place the second and third blocks on either side of the corner unit. Once the corner unit is in position, glue block in
place with a concrete adhesive. Continue to alternate the corner unit orientation with each course and always use a
concrete adhesive on the corner units. Use cut or split units as necessary to maintain running bond.
OUTSIDE 90-DEGREE CORNERS
FOR SYSTEMS WITHOUT A CORNER UNIT
90-degree corners are built by alternating corner/column units so the long side is on different sides of the wall. Build
the pattern from the corner unit when possible. Install corner units level from front to back.
Depending on the wall layout, there may be a need to go off the pattern and randomly place wall blocks near the
corner. Set back corner units to reflect the batter of the wall block units and glue from bottom to top.
Outside 90-Degree Corner
with Corner/Column Unit
NOTE: To split a block, use a hydraulic splitter or split manually by using a hammer and chisel to score the block
on all sides. Pound the chisel on the same line until the block splits. If partial unit sides are not exposed, use a
saw with a diamond blade to achieve a tighter fit.
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INSIDE 90-DEGREE CORNERS
BASE COURSE
To create an inside 90-degree corner, begin by placing a block at the
corner. Then lay a second block perpendicular to the first and continue
laying out the rest of the base course working from the corner out. Make
sure to construct the base course according to standard site prep and
installation procedures.
and
t
Example Inside 90-Degree Corner
I
:K Extend second course
beyond corner to prevent
settling (remove rear lip as
needed and glue in place
with concrete adhesive)
.i
ADDITIONAL COURSES
On the second course, place all blocks on bond along one side of the
corner. Once the second course of one wall is established, begin the
second course of the adjacent wall. Split units or units of varying sizes
may be required on this wall to maintain running bond. Continue to
alternate the corner unit orientation with each course and always use a
concrete adhesive on the corner units.
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XLT" CAP r11 �
18.
STRAIGHT WALL
The XL` cap must be laid alternately, short and long faces
for a straight line. Always start capping from the lowest
elevation. Once caps are aligned, caps should be glued in
place using a concrete adhesive.
CURVES
Lay out the cap units side by side with the same face
facing out (long faces for outside curves; short face to
inside curves). If there's a need to adjust for project's
radius, make cuts at least every other cap as needed for
the most pleasing aesthetic.
Minimum radius with XL cap; 2 feet 2 inches
90-DEGREE CORNERS
Saw -cut two caps to achieve a 45-degree
mitered corner.
STEPPING UP CAPS WITH XL'" CAP
If the wall elevation changes, caps can be stacked
where the wall steps up. Begin laying caps at the lowest
elevation change and work your way toward the next step
up. Split' a cap unit to fit. Place the split unit directly on
top of the capped portion of the wall with all three split
faces exposed.
FINISHING WITH XL`" CAP
After layout is complete and caps are saw -cut or split to
size, carefully place concrete adhesive on wall top course
and then place caps.
45 degree Cuts
A
straighl
'NOTE: To split a block, use a hydraulic splitter or split manually by using a hammer and chisel to score the block on all sides. Pound the chisel on
the same line until the block splits. If partial unit sides are not exposed, use a saw with a diamond blade to achieve a tighter fit.
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LAYING PATTERN AND INSTALLATION GUIDE FOR
MULTI -PIECE FREESTANDING WALL
WHEN TO USE A PATTERN FOR FREESTANDING WALLS
One set of 6-inch-high blocks
consists of 2 large units,
1 medium unit and 1 small IF
unit, and is 1 square foot of two
sided wall. —
/ I F 40- Shaded Area Represents
U Start Base Block Repeating Pattern
NOTE: These freestanding watt installation patterns show only one side of the
freestanding wall. The same number of blocks are needed to build the other side of a TYPICAL CROSS SECTION
freestanding wall when using a back-to-back freestanding wall systems. Freestanding
wall installation patterns are measured in length by height of one side of the wall, and
are expressed in square feet. Sets of blocks required include the number of blocks Cap Unit
needed to build both sides of the wall.
15 E Freestanding
Wall Unit
ENDING A WALL WITH WALL ENDS
Start pattern next to a wall end unit if the
wall does not end with a column. Using a
column unit, every other unit is cut in half to
stagger bond. Glue all pieces in place using
concrete adhesive.
6° Min. Compacted
6• Granular Base
Leveling Pad
Split Units to Form
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DIAMOND° 9D COLLECTII ON L•
Diamond° 9D
6x173/4x9
Corner/Column Torpedo Base Block XL Cap
6x16x8
4x153/4x11
DIAMOND° 9D
CORNER/COLUMN
3x18/12x13
IURPEDO BASE BLOCK
XL CAP
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kjENGINEERED SOLUTIONS 0Y
ANCHOW
WALL SYSTEMS