HomeMy WebLinkAboutBLD-20-4234DESIGN CRITERIA PER 310 CMR 15.000
COMMERCIAL - OFFICE BUILDING
75 GPD PER 1000 SF (200 GPD MIN.)
�nawTFNANCE AREA FACTORY. INDUSTRIAL PLANT.
WAREHOUSE OR DRY STORAGE SPACE W/ CAFETERIA
20 GPD PER PERSON
SOILS EVALUATION
CONDUCTED BY: ALYSSA PECK, PE
OBSERVED BY: BRUCE MURPHY, HEALTH DIRECTOR
PHIL RENAUD, HEALTH INSPECTOR
COMPLETION DATE: SEPTEMBER 5, 2019
TEST PIT A: GROUND ELEVATION = 22.Of
PROPOSED BUILDING HORIZON DEPTH (IN) ELEV. (FT) COLOR, TEXTURE, MOTTLING, & NOTES
OFFICE AREA = 6,660 SF
0 0- 2 22.0 - 21.8 ORGANICS (LEAVES, BRUSH, ROOTS)
MAINTENANCE AREA - 24 PERSONS (MAX) A 2- 6 21.8 - 21.5 GLEY �aY, LOAMY SAND
DESIGN FLOW B 6- 30 21.5 - 19.5 7.5YR5/4, LOAMY SAND
(6,660 SF X 75 GPD / 1000 SF) +(20 GPD PER PERSON X 24 PERSONS) = 980 GPD � 30 - 144 19.5 - 10.0 7.5Y�, SAND, APPROX. 40% GRAVEL
�AY 1.000 GPD
USE DESIGN FLOW OF 1,000 GPD PARENT MATERIAL: GLACIOFLUVIAL DEPOSITS
PERCOLATION RATE <2 MIN./INCH DEPTH TO SEDROCK: > 144 WCHES B.G.S.
DESIGN SOIL CLASSIFICATION CLASS I STANDING WATER: NONE
EFFLUENT LOADING RATE 0.74 GPD/SF WEEPWG WATER: NONE
LEACHING TRENCH DESIGN - PRIMARY AND RESERVE AREA TEST PIT B: GROUND ELEVATION = 21.5f
1.000 GPD DESIGN FLOW = 1,351 SF OF TRENCH REQUIRED HORIZON DEPTH (IN) ELEV. (FT) COLOR, TEXTURE, MOTTUNG, & NOTES
0.74 GPD/SF 0 0- 4 21.5 - 21.2 ORGANICS (LEAVES, BRUSH, ROOTS)
, EFFECTIVE LEACHING AREA A 4- 8 21.2 - 20.8 GLEY �oY, LOAMY SAND
FOUR TRENCHES AT: = 1,430 SF OF TRENCH PROVIDED
65' LONG X 2.5' WIDE X 1.5' DEEP B1 8- 29 20.8 - 19.1 7.5YR%s. LOAMY SAND
62 29 - 50 19.1 - 17.3 7.5YR�, SAND
TRENCH SUMMARY C 50 - 144 17.3 - 9.5 7.5YR�fs, SAND, APPROX. 50� GRAVEL
AREA (SF) GPD
REQUIRED 1,351 1,000
PROVIDED 1,430 1,058
NOTE: SPACING BETWEEN PRIM�IRY
TRENCHES SHALL BE 7'-6". ,/
SEPTIC TANK DESIGN - H-20 LOAD RATED
DESIGN FLOW: 1,000 GPD
TWO COMPARTMENT TANK (310 CMR 15.224)
1ST TANK REQUIRES 48 HOUR DETENTION TIME
VOLUME = 2 DAYS X DESIGN FLOW = 2 DAYS X 1,000 GPD = 2,000 GAL
2ND TANK REQUIRES 24 HOUR DETENTION TIME
VOLUME = 1 DAY X DESIGN FLOW = 1 DAY X 1,000 GPD = 1,000 GAL
PIPE LOADING CALCULATION
(REF: UNI-BELL HANDBOOK OF PVC PIPE)
FOR H20 LOADING AND 1' OF COVER:
TOTAL LIVE+DEAD LOAD = 1,600 PSF = 11.1 PSI
(FIG. 11, PG. 134)
FOR H20 LOADING, 1' COVER, HIGHWAY CONDITIONS:
IMPACT FACTOR = 1.5
(TABLE 21)
SAFETY FACTOR = 1.5
PIPE STRESS =(11.1 PSQ(1.5)(1.5) = 25.0 PSI
ALLOWABLE PIPE STRESS:
SDR 35 = 46 PSI > 25.0 PSI => OK
(TABLE 24)
NOTES
1. DOUBLE WASHED STONE SHALL BE FREE OF IRON, FINES, ANO DUST IN
ACCORDANCE WITH 310 CMR 15.247.
2. FILL PLACEMENT, IF REQUIRED BY THE ENGINEER, WILL BE IN
ACCORDANCE WITH 310 CMR 15.255(6).
3. CONTRACTOR SHALL INSTALL TANKS IN A MANNER WHICH WILL PREVENT
UNDERCUTTING OF NEW BUILDING FOUNDATIONS.
4. THE SEPTIC SYSTEM INSTALLER SHALL HAVE A CURRENT DISPOSAL
WORKS INSTALLERS PERMIT WITH THE TOWN OF YARMOUTH.
INSTALLERS SHALL OBTAIN A DISPOSAL WORKS CONSTRUCTION PERMIT
PRIOR TO CONSTRUCTION.
5. THE CONTRACTOR SHALL NOTIFY THE ENGINEER AND BOARD OF HEALTH
A MINIMUM OF 48 HOURS AHEAD OF EXCAVATION OF THE LEACHING
TRENCHES. THE ENGINEER AND BOARD OF HEALTH SHALL BE PRESENT
TO WITNESS THE SUBGRADE OF THE LEACHING TRENCH TO ENSURE
CONSISTENCY WITH DESIGN CALCULATIONS.
6. PLUMBING CONTRACTOR IS RESPONSIBLE FOR PROVIDING AND
INSTALLING SANITARY PIPE TO A LIMIT OF 10�-0" FROM THE BUILDWG.
GENERAL CONTRACTOR IS RESPONSIBLE FOR EXTENDING SERVICES FROM
LIMIT OF THE PLUMBERS WORK TO THE SEPTIC TANK, DISTRIBUTION
BOX, AND UP TO AND INCLUDING THE LEACHING TRENCHES AND VENTS
ACCORDINGLY.
7. GENERAL CONTRACTOR SHALL EXCAVATE AND BACKFILL FOR ALL
EXTERIOR PLUMBING WORK.
8. CONTRACTOR SHALL RESTORE LEACHING FtELD FINISH GRADE TO MATCH
GRADES SHOWN ON PLANS.
9. CONTRACTOR SHALL VERIFY ALL CONFLICTS WITH OTHER UTILITIES AND
MAKE ADJUSTMENTS AS NEEDED AT NO ADDITIONAL COST TO THE
OWNER.
10. AN ENGINEERED AS-BUILT SHALL BE PREPARED AND SUBMITTED TO
THE YARMOUTH BOARD OF HEALTH.
PARENT MATERIAL: GLACIOFLUVIAL DEPOSITS
DEPTH TO BEDROCK: > 144 INCHES B.G.S.
STANDING WATER: NONE
WEEPING WATER: NONE
TEST PIT C: GROUND ELEVATION = 20.2f
HORIZON DEPTH (IN) ELEV. (FT) COLOR, TEXTURE, MOTTLING, & NOTES
0 0- 3 20.2 - 20.0 ORGANICS (LEAVES, BRUSH, ROOTS)
A 3- 8 20.0 - 19.5 GLEY �oY, LOAMY SAND
B 8- 40 19.5 - 16.9 7.5YR�, LOAMY SAND
C 40 - 102 16.9 - 11.7 7.5YRYs� SAND, APPROX. 50� GRAVEL
PARENT MATERIAL: GLACIOFLUVIAL DEPOSITS
DEPTH TO BEDROCK: > 102 INCHES B.G.S.
STANDING WATER: NONE
WEEPING WATER: NONE
TEST PIT D: GROUND ELEVATION = 21.Of
HORIZON DEPTH (IN) ELEV. (FT) COLOR, TEXTURE, MOTTLING, & NOTES
0 0- 2 21.0 - 20.8 ORGANICS (IEAVES, BRUSH, ROOTS)
A 2- 6 20.8 - 20.5 GLEY gyoY, LOAMY SAND
B 6- 35 20.5 - 18.1 7.5YR5/4, LOAMY SAND
C 35 - 134 18.1 - 9.8 7.5Y%a, SAND, APPROX. 40% GRAVEL
PARENT MATERIAL• GLACIOFLUVIAL DEPOSITS
DEPTH TO BEDROCK: > 134 INCHES B.GS.
STANDING WATER: NONE
WEEPING WATER: NONE
PERC. TEST DEPTH: 78 INCHES
PERC. RATE: <2 MlN./INCH
BORING B-6: GROUND ELEVATION = 17.Ot
CONDUCTED BY: BENJAMIN GOFFiN
WESTON & SAMPSON
COMPLETION DATE: MARCH 28 & 29, 2019
DEPTH (FT) ELEV. (FT) SAMPLE DESCRIPTION
0- 8.5 17.0 - 8.5 FILL
8.5 - 26 8.5 - -9.0 SAND
CASING DRIVEN TO DEPTH OF 24 FT.
DEPTH OF GROUNDWATER: 9 FEET B.G.S. (READ AFTER STABILIZATION)
* GROUNDWATER ADJUSTMENT; AIW-230, MARCH 2O19; 0 FT. ADJUSTMENT.
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BENCHMARK <� ._< � � � � ` / .,
ProJect:
NEW DPW FACILITY
TOWN OF YARMOUTH, MA
507 BUCK ISLAND ROAD
YARMOUTH, MA 02664
Wesfion O Sam�san
Weaton & �Sampson Engineers, Inc. �'�,
� 100 Fozborwgh Boulevard ��.
Suite 250
Foxborough, MA 02035 �.
(508) 698-3034 (S00)
SAMPSON
www.westonandeam pson. oom
Consultants:
JA,� 2 �12020
� � � MAG AT CORNER CB � � % � � �� ' �. , � � � � � � �/ � �
ELEV. 17.38 � : � � \ / /
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SEPTIC SYSTEM PLAN Re�,S�ons:
SCALE: 1 "=20'
! 0 20' 40' 60'
Rev Date Description
. � � . � � . � �I � �� � � � � 11I07119 UPDATES PER BOH COMMENTS
. . � . . � � '' � � � . � . � . � � � � 2 07M0120 UPDATES PER BOH COMMENTS
4" SCH 80
PVC VENT
; PRECAST DISTRIBUTION BOX
' RIM=18.65
I, INV(IN)=15.09
INV(OUT)=14.92
(SEE SEPTIC DETAILS, C9.04)
4 PERFORATED
' " SCH 40 PVC
S=0.005, L=65
FINISHED jg"-Y2" DOUBLE ELEV=18.53
GRADE � WASHED CRUSHED
STONE FILTER
ELEV=18 23 FABRIC�
,� GW ELEV= 8A*
TOP OF SYSTEM
, ELEV= 15.42
0 0 0 0 0�0�o°o°aeo�o°o°o°
INV.=1 4.60 �°0000000000000000000a,000
o�o�o�o�o�o°o°o°o°o°o°o°o°
BOTTOM OF TRENCH
ELEV= 13.10
(TYP 4 TRENCHES)
4" SCH 40 PVC
L=20.5',
� S=0.01
�"" � INV=14.92
3/4'-1Yz" DOUBLE WASHED
CRUSHED STONE
SEPTIC SYSTEM PROFILE
SCALE:
HORIZONTAL 1 "=20'
VERTICAL 1"=4'
_ 3,000 GALLON TWO COMPARTMENT
PRECAST SEPTIC TANK
RIM=18.69
INV(IN)=15.54
INV(OUT)=15.29
(SEE SEPTIC DETAILS, C9.a4)
26
� BUILDING FACE
� 22
; BUILDING
; FF ELEV=19.00
` 18 �
� 4" CI PIPE � 1% SLOPE TO 10'
FROM BUILDING BY PLUMBING
-INV. OUT= CONTRACTOR AND 4" SCH 40
15.64 PVC PIPE TO SEPTIC TANK
14
TOP OF STONE
- EL=8.71
6" LAYER OF
10
0
2
Heaith Department
Issued For: BIDDING
�
NORTH
FOR PERMITTING
Date: SEPTEMBER 17, 2019
Drawn By: AKP
Reviewed By: JSP
Approved By: AKP
W8S Project No: 2170117
Drawing Title:
SEPTIC PLAN
AND PROFILE
I Sheet Number,
WESTON & SAMPSON COPYRIGHT2018
"""KFILL PER EARTHWORK SPEC
12" (MIN.)
2" (MIN.)
4�� FILTER FABRIC
�$ Y$' _ Y2" DOUBLE
WASHED CRUSHED
STONE
4" PERFORATED SCH. 40 PVC �a�� - 1Y2" DOUBLE
WASHED CRUSHED
DISTRIBUTION PIPE (TYP) 2'-6" STONE
(SEE SHEET C7.d0 & C7.01
FOR iOCATIONS)
NOTES:
1. FINAL EXCAVATION LIMITS TO BE DETERMINED IN FIELD BY ENGINEER.
2. ALL EXCESS SOIL FROM TRENCH EXCAVATION SHALL BE STOCKPILED
ON SITE FOR REUSE, IF SUITABLE, OR DISPOSED BY THE CONTRACTOR.
3. PROVIDE FILTER FABRIC ABOVE ENTIRE FIELD. '
4. SPACING BETWEEN PRIMARY TRENCHES SHALL BE 7'-6".
i LEACHING TRENCH DETAIL
SCALE: N.T.S.
CONNECT TO 4" CAST IRON
SERVICE LINE FROM BUILDING.
REFER TO P-SERIES DRAWINGS FOR
LIM1T OF PLUMBING WORK: 6��
CONTRACTOR TO PROVIDE --►�
NECESSARY FITTINGS TO TRANSITION
FROM CAST IRON TO PVC.
WATERTIGHT FRAME AND
COVER WITH H-20 LOADING
(ADJUST TO FINISH GRADE)
PRECAST
CONCRETE RISER �
4" DIA. ONE 4" DIA.
ONE 4" DIA. OUTLET INLET �n
INLET � � (TYP OF 6)
10„ � L
8�� 4" DIA.
�� .�, OUTLET
6", 3�4 CRUSHED ��-5�� (TYP OF 6)
STONE
SECTION PLAN VIEW
NOTES:
1. DISTRIBUTION BOX SHALL BE PLACED ON A MINIMUM 6" CRUSHED STONE BASE.
2. UNUSED OUTLETS TO BE PLUGGED WITH GROUT.
3. OUTLET LINES FROM THE DISTRIBUTION BOX SHALL BE INSTALLED LEVEL FOR THE FIRST TWO FEET.
4. CONCRETE: 5000 PSI AFTER 28 DAYS.
5. DISTRIBUTION BOX TO MEET H-20 LOADING.
6. KEYED JO�NT TO BE SEALED WITH BUTYL RUBBER.
� PRECAST DISTRIBUTION BOX (H-20 LOAD RATED)
SCALE: N.T.S.
4"4� SCH 80 PVC
PIPE (90' BEND)
ABOVE GRADE
ALUMINUM OR -
FIBERGLASS INSECT
SCREEN OF 18X16 MESH
MECHANICALLY
FASTENED TO VENT PIPE
4" SCH 80 PVC
FINISHED
�GRADE
ORDINARY
4" PERFORATED SCH 40 BORROW
PVC DISTRIBUTION PIPE
SLOPE —�
LEACHING 4"� PVC 90°
TRENCH BEND AT
DOWNSTREAM END
4" UNPERFORATED
SCH 40 PVC
MANIFOLD PIPE
� LEACHING TRENCH VENTING DETAIL
, v % SCALE: N.T.S.
4" FLEXIBLE COUPLING�
(FOUR BAND) '
(TYP OF 2) '
4" SCH 40 PVC PIPE
(TYP OF 2)
COMPARTMENT
SEPARATING
BAFFLE
�� I ��
I I 24" OPENING I I
ABOVE INLET I � I (
TEES
- —I
I I
I I
4" SCH. 40
PVC PIPE
I 6"
7'-0"
� 12' - 5" �
PLAN
MORTAR ALL ADJ. TO FINISHED GRADE WITH BRICKS WATERTIGHT FRAME
2 COURSES MIN., 4 COURSES MAX.
AROUND �'(TYP) WITH 3/a" MORTAR JOINTS, BED FRAME AND COVER {TYP OF 3)
FINISHED GRADE IN 3/a" MIN. FULL MORTAR BED TYP
EL.=18.7t � )
/:, ; � �: g„ MIN.
6 �� 3„
,
�3 � 2'�
4" INLET PIPE 12" MIN.
AND TEE oZ - TO DISTRIBUTION BOX
INV.=15.54 .-� ( I N 4" SCH 40 PVC OUTLET
(TYP OF 2) PIPE WITH CORROSION
COMPARTMENT CONN. RESISTANT GAS BAFFLE
= 4 SDR35 PVC INVERTED I r INV.=15.29
I W AND VENTED "U" WITH �
� J CORROSION RESISTANT
GAS BAFFLES
o � 6>,
�
�
� 1ST COMPARTMENT ( IZND COMPARTMENT
� LIQUID CAPACITY LIQUID CAPACITY
� 2,000 GALLON (MIN) 1,000 GALLON (MIN) 6" LAYER CRUSHED
STONE (TYP)
6" �i��i�.y; ��i����� � ;� :
UNDISTURBED VARIES
MATERIAL
12'-5"
SECTION
3,000 GALLON PRECAST SEPTIC TANK (TWO COMPARTMENT) DETAIL
5 H-20 LOAD RATED
SCALE: N.T.S.
FINISHED GRADE
H-20 LOAD RATED CAST IRON
ACCESS BOX
- (FLUSH TO FVNISH GRADE)
4" SCREW CAP
6" MIN. %4" TO 1Y2 " DOUBLE
W WASHED STONE BENEATH
� ACCESS BOX
a
� 4" SCH 80 PVC
�� _ -�3/a" - 1Y2 �� DOUBLE
' WASHED CRUSHED STONE
4" SCH 80 PERFORATED PVC
�—SAND FILL PER 310 CMR 15.255
OR NATURALLY OCCURRING SO�L
4 INSPECTION PORT DETAIL
SCALE: N.T.S.
SEPTIC TANK NOTES:
1. CONCRETE: 5,000 PSI AFTER 28 DAYS.
2. TANK AND COVERS TO MEET AASHTO H-20 LOADING.
3. KEYED JOINT TO BE SEALED WITH BUTYL RUBBER.
4. PRECAST CONCRETE SEPTIC TANK SHALL MEET REQUIREMENTS OF 310 CMR 15.223
THROUGH 15.228.
5. INLET TEE TO EXTEND BELOW LIQUID LEVEL IN ACCORDANCE WITH 310 CMR 15.227.
6. SEPTIC TANK TEES SHALL EXTEND A MINIMUM OF 6" ABOVE THE FLOW LINE.
7. ALL SEPTIC TANK MANHOLE FRAMES AND COVERS SHALL BE ADJUSTED TO
FINISHED GRADE AS DETAILED ABOVE. FIBER REINFORCED PRECAST CONCRETE
MANHOLE DONUTS SHALL BE USED TO ADJUST MANHOLE FRAMES TO GRADE WHEN
THE USE OF BRICKS EXCEEDS ONE VERTICAL FOOT.
18"
�
.44"
VARIABLE
INVERT 8° THICK CONC.
HEIGHT COLLAR FOR
� DIMENSION H-20 LOADING
�--�
I VARIABLE AS
SHOWN ON PLANS
4" CAST IRON
""�� ""�� INLET COVER. USE
LEBARON (FOUR
FLANGES) OR
APPROVED EQUAL.
PRE MOLDED JOINT
FILLER ALL AROUND
BACKFILL MATERIAL SHALL
BE 3/a" CRUSHED STONE,
8" MIN. IN ALL DIRECTIONS
OUTLETS WITH
WATERTIGHT ADAPTERS
��� SEWER AND DRAIN CLEANOUT
�v� SCALE: N.T.S.
ProJect: I
NEW DPW FACILITY
TOWN OF YARMOUTH, MA
507 BUCK ISLAND ROAD
YARMOUTH, MA 02664
Weston O Sam�s��
. Weston & Sompson Engtnean, Ina.
. 100 Foxborough Boulevard
Suite 25D
Fox6orough, MA 02035
(508) 698-3034 (soo) �
SAMPSON
� www.weatonandsampson.crom �
Consultants:
Seal:
Revisions:
Rev Date Description
1� N/07l19 UP�ATES PER BOH COMMENTS
2 07f20720 UPDATES PER 80H COMMENTS
Issued For: BIDDING
�
NORTH
FOR PERMITTING
Date: . � � SEPTEMBER 17, 2019
Drawn By: AKP
Reviewed By: JSP
Approved By: AKP
W&S Project No: 2170117
Drawing Title:
SEPTIC SYSTEM
DETAILS
� Sheet Number:
• ' f
WESTON 8 SAMPSON COPYRIGHT 2018