HomeMy WebLinkAbout2013-12-03 Planning Board Supplemental Materials (77) UWALL SYSTEM NOTES: A DRAINAGE (For walls with geogrid onlo: TYPICAL
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A. GENERAL: a. Provide a drainage foyer directly behind the face of the unit and between the stems. i t r"ICAL CO VS i t�U1 t ION SEQUENCE
o. The owner or owners representative is responsible for reviewing and verifying that the (12" thick layer of 3/8" crushed aggregate)
actual site conditions are as described prior to and during construction. b. If the backfill is not free-draining, a drainage layer at the back of the reinforcing STEP 4 (Skip Step 4 if Mocgrid is not required):
b. All plan dimensions must be verified by the contractor. The project engineer must be block shall be provided from the base of the wall to half the wall height with a. . Place Mocgrid at proper elevation, ensuring to cut to
notified of any discrepancies before the contractor begins with work. positive drainage path and a suitable outlet. 1'-0" Leveling pod width MACGRID REINFORCEMENTPULL TiGHT, the correct length (See Typicol Uwall Section). Cut
c. Structures such as building footings, swimming pools, retaining wails, storage or solid c. All subsurface drains to have outlets of low point and a positive drainage path. -- STEP 1: 2'-0" min.
panel fencing must be kept clear such that the load is not placed between a Fine Provide subsoil drainage pipes with flushing points at high points and intermediate - - t Excavate trench for level base. STAKE OR HOLD Macgrid to fit around stems as required.
projected behind the wolf from the founding levet of IV : IH and the wall. points. , i��� ( • Provide leveling pod for base and wall. TOPSOIL • install Macgrid with the roll direction (primary strength)
d. Precautions must be taken where other building work, service trenches, garden beds, E DESIGN ASSUMPTIONS: lW �� 6" MIN, \i� �`\�. perpendicular to the wolf (ace.
etc, may be excavated In front of the wall. a. The design presented herein is based on soil parameters, foundation conditions, r 1'-0" MIN. r; Macgrid should be extended to the bock face of the
'a ._. Uwolf.
e. if the top of the reinforced fills is to be planted plants with root systems that may groundwater conditions, and loadings stated in the relevant specifications. Should ti D, _ 1 ,tits l
adversely affect the facing units shall not be used. actual conditions vary from those assumed, the project engineer should be notified _ Place the next lift.
f. Where a safety fence is required by council it shall be set back a minimum of 40" prior to construction to determine if redesign of the proposed structure is required. o�° �� � I ;ass\ 4 • Putt Mocgrd tight, keep tension applied until backfill is
from the top of the wall. b. CSI Group, Uwall and Maccaferri PTY LTD Group assumes no liability for interpretations �� �` I placed. Additional stokes may be used to maintain
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B. Refnfarced FffL• of subsurface conditions suitability of soil design parameters, and subsurface .���!� 1-,,,IT1= tension.
o. Fill material in the reinforced soil structure shall be granular and non-expansive and groundwater conditions. NATIVE Sail 6" � • Adjacent rolls of Macgrid should be overlapped a
comply with the design parameters specified on the contract drawings and or F. FOUNDATIONS: " minimum of 4'.
specifications. The material sholl.be capable of being compacted in 'accordance with a. Bearing capacity is controlled by general shear, maximum permissible eccentricity ratio • Finish backfill placement and compact.
the specified requirements to form a stable mass of fill. (soft), e/L = 0.25. Applied bearing pressure at maximum height: 3,000 psf. Overlap geogrid
b. Fill material in the facing blocks and lin the reinforced soil structure shall be free from b. The foundation soil shall be proof-rolled prior to placement of fill and Macgrid 4" min. 1'-0" MIN. - - STEP 2:
organic matter, plastic, metal, rubber or other synthetic material inorganic geosyWhelic reinforcement. Macgrid length
contaminants, dangerous or toxic material, or material susceptible to combustion. The c. The foundation.soil shall be examined by the engineer to ensure that the actual Check level of base course, lay first row of STEP 5:
pH value of the fill shall be between 5 and 10• foundation soil strength meets or exceeds the assumed design strength. Soil not Cut out geogrid UWALL UNiT Uwall units. . Continue wall construction.
c. Fill material shall be laced in layers that are no more than one foot and each foyer meeting the required strength shall be excavated on replaced with approved material. around stems �� . • Check olI line, grade, and curves. I Place additional Uwoll units & lifts by
P Y Se 9 t g P AA �� Place filter, fabric at vertical joints.� j ' � repenting step J.
shall be thoroughly compacted to of least 95q of the maximum dry density for d. Wall embedment at toe of wait = l' min: �>
standard compaction in accordance with ASAP 01557. The fill moisture content shall be G. DESIGN PARAMETERS �`�� . Place Macgrid over top of stem and pinch
within t 2% of the optimum moisture content for compaction. a. Design of the reinforced soil structures ore based upon the following parameters. LEVELING PAD sa between keys of next level when Mocgrid is
P A 9 P 4 P ( COMPACTED B �!<FlLL trz
d. The placement and compaction of fill material shall be carried out in o direction o.a• Reinforced (select) filly required.
parallel to the face of the wall, and shall be completed in stages to follow closely the See "Select fill Gradation Specifications".Table _
erection of the Uwall units and placement of Macgrid reinforcing elements. 1; /\���� " DRAINAGE I -
e. Construction vehicles and equipment weighing more than 1,100 lbs, shall be kept more Effective internal friction angle = 34' I xN� i ZONE
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than five feet away from the facing Uwall t=ill material closer than five feet behind fffecfive Cohesion = 0 psf �
the facing wall may be compacted using hand operated mechanical equipment, such as Moist unit weight = 125 pcf SEE TYPICAL 4111
a vibrating plate, trench compactor or similar. a.b. Retained fill UVIALL SECTION
f. Where Macgrid layers overlap such as of convex wall curves, provide a minimum of 2" Effective internal friction angle = 3t)' MACGRID PLACEMENT ONRADIUSDETAIL -i1i-111
of fill between the Macgrld layers. Effective Cohesion = 0 psf
C. REINFORCING ELEMENTS (WHEN REOUIR£t)): Moist unit weight = 125 pcf STEP 3:
a, Macgrld WG reinforcing elements to be stored, transported, handled and placed to the A Saturated soil unit weight = 165 pcf Place drainage layer (crushed aggregate) in
manufacturers specification. They shall not be damaged or displaced during placement o.c. Foundation material COMPACTED the zone immediately behind face of wall yR
and compaction of the fill. Vehicles shall not be operated directly above reinforcing Effective internal friction ongl = 30' �i BACKFILL (only when using geogrid).
elements that are not covered by at least 4" of fill Effective cohesion = 0 psi SELECT FILL GRADATION SPECIFICATIONS • Place and compact t2" lift of backfill, iw STEP 6:
b. the Macgrid soft reinforcement shall be laid behind the Uwali units and horizontally on Moist unit weight = 125 pcf, ensuring bockfill is level and uniform. Repeat steps 3 ihru 5, until wall is at
compacted fill. the strop axis of the rid shall be laid perpendicular to the wall face. b. Surcharge loads applied to structure: (PERCENT PASSING BY WEIGH O • Repeat stop 3 until Moc rid is required "? '
F g g P P 9 AA P P 9 4 required height.
The next course of units shall be placed. Pull Mocgrid font, and anchor Macgrid to 1. Live Load surcharge: N/A SIEVE CLEAN GRANULAR BASE SELECT ,xe;
compacted backfill prior to pacing backfill. Slack in the Macgrid shall be removed, 2. Live Load construction surcharge = N/A SIZE FILL COURSE GRANULAR FILL a> r
c. Do not allow fresh concrete, cement powder or time to come into contact with the Lac The design assumes saturated soil pressure (165 pcf) acts on the lower 2 tiers only. $° 100 . 100 100 3 (
reinforcing elements. T 1`-0" LIFT
� d. The design hos considered seismic forces, 3' 70-100 100 70- 100 s � NOTE
e. Global (slip circle) stability, settlement, bearing capacity of foundation soils, scour,.and 1f2" 40-100 40-80 40-90 r - i-I ) £HE E IDA R£oF SELECT FILLAWAY FROM CTH ZRACTOR SHALLT�LOPE
site drainage to be checked by others. No. 4 25-100 30-70 25-80 )�-
No. 10 16-95 20-60 15-70 i_11-_ RAPIDLY DIRECT RUNOFF AWAY FROM THE WALL FACE.
GENERAL U-MALL NOTES: ..:! IN ADWION, THE CONTRACT0,4 SHALL NOT ALLOW SURFACE RUNOFF
No.40 10-70 10-30 5-40 Il�I 5`i FROM ADJACENT AREAS TO ENTER THE WALL CONSTRUCTION SITE.
t. Concrete Strength t c = 4000 psi. No. 200 0-16 3-10 0-10
2. Reinforcing Steel: AS7M A615 (rebor) grade 60 � _1=
ASTM A1064 (WWF) fy = 60 ksi
3. Designed per NCMA.
4. U-Wali units to hove form liner finish.
3/4 chamfer 8"
(TSP) -
0
o TIER NO. 5-MACCAFERRI MACGRID TAKEOFF Mocgrid is to be .
�o - placed on level
Blackout stems 10" Macgrid Walt Length Macgrid Macgrld Length Macgrid Roil Dimensions (F7) No. Macgrid bockiffl & extended Cut mocgrid
on fop units Row; at Row Grade: Required (it): (W x L ; Rolls Required:_ ) q over stokes. Place around stems
i' 1 96 WG8 7 12.8 X 328 0.30 next unit, pull Mocgrid
2 96 WG8 7 12.8 x 328 0.30 tout and backfill
3 96 WG8 7 12.8 x 328 0.30 Stoke as required•
0 Total Rolls: 0.90 3/11 Filter fabric MACGRID STAKE CONNECTIONDETAIL
hocking
51, 1/2" horizontal
joint material
TIER NO. 2-MACCAFERRI MACGRID TAKEOFF If a vertical penetration must pass
Macgrid Wall Length Macgrid Macgrid Length Macgrid Roll Dimensions (FT) No. Macgrid through the reinforced soil block,
Row; at Row Grade: Required (fw (W x L): Rolls Required: 1/2" additional reinforcement shalt be
2" formliner 3'-3" placed as per the following sketches
1 440. WG8 6 12.8 x 328 0.70
rrTT rr m 2 440 WG8 6 12.8 x 328 0.70 U-Wall unit
STANDARD TOP V�.WALL UNIT DET AILn7 3 440 WG8 6 12.8 x 328 0.70 - - Cut reinforcement to Cut reinforcement from
JOINT DETAIL fit around obstruction back up to obstruction
Total'Rolis: 2.10 Mocgrid width
0 O Cut mocgrid
around stems
2'-0" 2'-0" TIER NO. 1 -MACCAFERRI MACGRID TAKEOFF
Macgrid Wali Length Macgrid Macgrid Length Me
cgdd Roll Dimensions (FT) No. Macgrid AH
4'-0" Row: at Row Grade: Required (ft): (W x L): Rolls Required: n 2Ns
6 T 1 328 WG8 6 12.8 . x 328 0.60 11 %8
( YP•) 2 $28 WG8 6 12.8 x 328 0.60 t X90 4" min. overlo
Standard unit Weight without 3 328 WG8 ' 6 12.8 x 328 0.60 9%a p5'-4""
ca w extension is: Total Rolls: 1.80 Cut out geogrid °jarh Macgrid width 12" + D/2 or D<24" p"
Plain finish: 1.81 tons around stems end of documented layer,
Formliner finish:, 2.11 tons
6UA444 Utility Anchor SAN 5 whichever is less D � 4. I -
Typ. 2 places D"
8,-0" 3'-3" Where."A" dimension is less
"D" than 12"+D/2, place extra grid
�. 6UA444 Utility Anet)or of watt course below the documented
6"" Inside face of stem grid level to ensure that there is at
Near & for stems 12" + 0/2
feast 3" of soil between documented
Mitered end grid and odd itional grid
o � 1 ^o"cc
U u CORNER MACGRID PLACEMENT DETAIL
MACGRID OBSTRUCTIONDETAILS
FRONT ELEVA77ON SIDE ELEVATION .
STANDARD U-WALL UNIT DETAILS � UNIVERSAL
Contractor is to verify that all information shown on - - -
drawings hos been thoroughly checked, complies with
the contract documents and is adequate to meet the 'tH OF MA 7M
field conditions. Some dimensions and details may �J SS
differ slightly from contract drawings to accommodate �S� qC�
the manufacturing or design process. Approval of this o CHMI)OPHERM. Gn
drawing indicates that any deviation from the contract PRECAST CONCRETE RETAINING WALL SYSTEM
documents has been reviewed and found to be 0 �STRfluTL
acceptable. Production will not commence until receipt o.48 t7
of signed, approved shop drawings. 0 9 d 4 '5 STATE AGENCY
�F FGI 'ERS ` This drawing is based upon information provided from the following documents and/or sources: PROCON
This drawing contains information proprietary to SSf AL '�� 4 Engineer: Morchiondo & Associates, L.P. BRIGHTVIEW NORTH ANDOVER
withCONCRETE SYSTEMS,tand g t This drawing t disclosed
3 Project No: 766-01 NORTH ANDOVER MA
with the understanding that it sift solely
retained r Drawings: Sheet 6 of 19 of r
confidence and its use limited solely to the purpose �j, 2 � � g project plans. � e
for which it is disclosed. It is understood that no C2/1 c '•'" Concrete Systtinc.
reproduction of this drawing is authorized without 1 02/17/12 Added geogrid to Tiers 1 and 2. Other misc changes (See Revl symbols). AK Specifications: N/A 9 Commercial St.,Hudson,N14,03051 AwKOSTENKO 02/02/2012 RETAINING WALL DETAILS NO. . 1 REV
permission from CONCRETE SYSTEMS, INC, and that it Phone 603-889-4163 ac a y are D Drawing No.
will be returned to CONCRETE SYSTEMS, INC. upon Internal and structural Rev. Date DESCRIPTION By Fax 603-889-2417 C VICK 02/06/2012 DET-1
request. stabilityof Uldall onl Other Sources: N/A pprove y ate
y REVISIONS puontity: Project No: M. & A, NO.: 766-01 SHEET 6 OF 6