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HomeMy WebLinkAboutEngineer PlansSURVEY WITH EXISTING TOPOGRAPHY, UTILITIES AND PROPERTY BOUNDARIES PROVIDED BY DEMAREST LAND SURVEYING, PLS DATED 21 AUGUST 2023. MAP 3 PCL. 298 m BENCHMARK 70P I F' .� / O MAG SURVEY NAIL _ __ O/ EL=6:9' (NAVCt38') 17 1 f G�-G-- - - -G --- SHED' G G ' J - NED DR �_ MH COVER- _. PAVED CURB ' _ GRANITE ---- CURB - O O 20' ^� o / CONC COVER PROPOSED 2,000 GAL. + PROPOSED 1,500 / \ (� T 1 �EL=5.8 , PUMP CHAMBER - -- GAL SEPTIC TANK © / \ �� C 1 1. C t' t ' G EXISTING G -4 _ DWELLING Z #182 A 8* - 2" MANIFOLD PIPING CONVERT' TO 1 a DOSING LATERALS 68, _ 2ND STORY , ~ f OVERHANG , \ D o O O 40 MIL. HDPE IMPERVIOUS � � APPROX. LOf.AC1ON / LINER PLACED 10 FEET FROM 2. OF LEACH CHAMBER EDGE OF CHAMBERS. m 4" PVC VENT �'`f TOP INV. = 8.41 BOTTOM INV. = 7.41 ` \ SOIL ABSORPTION SYSTEM y r & PRESSURE DOSED \- 4" PVC INSPECTION PORT 25 CULTEC FD C4 CHAMBERS 7 BED CONFIGURATION 20'X40'X8.5" SUNROOM CARRIAGE HOUSE I CLOSET PRIMARY �---- LIVING SUITE BEDROOM LT BATH #182 SECOND FLOOR PLAN (NOT TO SCALE) DINING/ LIVING SITTING SUNROOM ROOM ROOM WASHER/ BATH DRYER P HOOKUP #182 FIRST FLOOR PLAN (NOT TO SCALE) LEGEND SOIL TEST PIT spyEXISTING CONTOUR PROPOSED CONTOUR OVERHEAD ELECTRICAL W\ BURIED ELECTRICAL MUNICIPAL WATER G NATURAL GAS LINE 180-182 SOUTH STREET ASSESSORS MAP 34 PARCEL 299 SITE PLAN SCALE: 1" = 20' 0 20 An BEDROOM KITCHEN MUD MUD SUNROOM DINING/LIVING ROOM OFFICE Q m = Z w ENTRY = U _ Y cc 0 0 SITTING Q ROOM J Q m #180 FIRST FLOOR PLAN (NOT TO SCALE) F-- m BEDROOM Q BEDROOM In CL--T4 HALL HALL BEDROOM BATH BED' ROOM BATH T_ I^.__a #180 SECOND FLOOR PLAN (NOT TO SCALE) O1.25" SCH. 40 PVC PRESSURIZED DOSING O INSPECTION PORT LATERAL w/ 1" ORIFICES DRILLED AT THE 12 MIN. 95%COMPACTED NATIVE FILL O'CLOCK POSITION EVERY 4 FEET ALONG LATERAL SCH. 40 PVC PRESSURIZED DOSING O ALL CHAMBERS SHALL BE CONNECTED TO 4" SCH. 40 PVC AIR VENT O2" EQUIPPED WITH SCREEN TO PREVENT ENTRANCE OF ANIMALS. O MANIFOLD CULTEC CONTACTOR FD-C4 CHAMBERS O CLEAN -OUT ON ALL DOSING LATERALS (SEE DETAIL) OF AIR VENT PIPING SHALL BE CONNECTED TO THE END 4U TITLE 5 FILL AROUND CHAMBERS CHAMBER VIA 4" KNOCKOUT ON END WALL. 8" WEEP HOLES TO BE DRILLED INSIDE OF THE CHAMBERS AT THE O10 MIDDLE AND BOTH ENDS OF THE PRESSURIZED DOSING LATERALS. SAS CHAMBERS PROFILE DETAIL 11 1.25" BALL VALVE ON EACH DOSING LATERAL NOT TO SCALE N 113 O \ CONCRETE RETAINING - WALL/ EDGE OF DUNE TOF=7.9' - L_L L- t_L-l. L_L_LL.I L l,_t,l l_l_ I L-L l__LL t- L!. L L-LL 1_ L LL:L. L_l 1 L_L L 1. 1 L EXISTING l_,t_L L t I I I LL t t i L_.1_1 DWELLING PATIO__ l t _L. . . L.I...L L1.-- 1 L. L_LL L- #180 I_L4 LI�i 1 t_L L4�LL.t l L 1._L_L-L CONTROL/ALARM PANEL PVC CLEANOUT AT CONNECTION TO EXISTING SEWER. CONNECT TO EXISTING W/ FERNCO FITTING. PROPOSED 2,000 ' GAL SEPTIC TANK _A2 y_ APPROX. LOCH: i- ty L T - v�11 rn v Schedule of Invert Elevations Location Design As -built 4" @ sewer invert @ foundation (#180) 5.90 4" @ sewer invert @ foundation (#182) 6.30 4" @ septic tank IN (#180) 5.08 3" @ septic tank OUT (#180) 4.83 4" @ septic tank IN (#182) 5.08 3" @ septic tank OUT (#182) 4.83 3" @ Pump chamber IN 3.83 2" FM @ Pump chamber OUT 3.58 1,25" lateral @ SAS Chamber IN 6.95 Top of Units (TOS) 7.41 Bottom of System (BOS) 6.70 Finished Grade over system (FG) 8.41 Pump & System Curve t - - - System Curve -i 25 Liberty FL31A 0� v 20 � DUTY POINT - . 10 TDH =15.2 is FLOW= 26 GPM ,,• do 0 10 20 30 40 so ec Flown Rate, gpm FLOW MM-♦ FROM DOSING LATERAL PARTS: 1 1.5" SCH. 40 PVC CAP W/ %" HOLE 2 1.5" SCH. 40 PVC THREADED ADAPTER 3 1.5" SCH. 40 THREADED BALL VALVE 4 1.5" SCH. 40 ELBOWS - 45 DEGREES 5 10" DIAMETER VALVE BOX. 6 CONCRETE OR CLAY BRICK OBACKFILLED SOILS AROUND VALVE BOX SHALL BE COMPACTED. FINISH GRADE SHALL BE PITCHES AWAY FROM VALVE BOX LID. OAT LEAST 6" OF DRAIN ROCK FREE OF FINES SHALL BE INSTALLED AT THE BASE OF THE VALVE BOX. OGEOTEXTILE SHALL BE INSTALLED AROUND THE BRICK SUPPORT AND BASE OF THE VALVE BOX O4 INSTALL RING OF BRICKS AROUND THE BASE OF THE VALVE BOX. LATERAL CLEANOUT DETAIL NOT TO SCALE LOT 2 48,171t S.F. (1.11t AC.) Design Tie -out Table (in feet) LOCATION X Y A (SAS corner) 93.6 128.1 B (SAS corner) 59.2 89.1 C (SAS corner) 73.5 96.3 D (SAS corner) 103.3 133.2 Select Pump (INPUTS) Pump Liberty FL31A-2 Volume Pump Tank 2,000 gallons Max. Water Depth of Tank 4.00 feet Invert Elev. Inlet 3,83 feet Elev. Discharge to SAS 6.95 feet Pipe Length 20.0 ft Pipe Diameter 2 in. SCH 40 PVC Residual Head 5 feet k Value for Friction Loss 6.6 Junitless CALCULATIONS TDH = AH + Pipe Friction + Minor Losses AH = Discharge Elevation - Pump Low Level AH' =AH+Added losses (ball valve adjustment) Minor Losses =kv2/2 OUTPUTS AH 6.37 feet AH' 11.37 feet Minor Losses 0.3719 feet Pipe Friction 5.0421 feet TDH Ifeet DUTY POINT (see graph) Q(Flow Rate) 26 JGPM TDH 15.2 Ifeet Determine Float Heights and Dose Volume Min. Dose Volume Required* 499 al./ dose Volume of Pressure Pipe (drain back) 10.7 gallons Adjusted Total Dose Required 509 gallons Volume per Depth of Tank 549 gal./ft inches gallons Min. Pump Submergence 9,0 412 Active Volume Depth 12.0 549 Surge Volume Depth 6.0 275 Depth Emergency Storage (includes Surge) 27.0 1236 -0.17 0.58 1.58 2.08 Elev. Bottom of Tank (interior) Elev. Low water level (pump OFF) Elev. High water level (pump ON) Elev. High Alarm VARIANCES / SITE NOTES: 11. PROPOSED SYS�M COMPONENTS ARE LOCATED WITHIN FEMA FLOOD ZONE AE. PORTION OF PROPERTY WITHIN FEMA FLOOD ZONE VE. 2. THE PROPERTY IS NOT LOCATED WITHIN A ZONE II INTERIM WELLHEAD PROTECTION AREA. 3. NO DRINKING WATER WELLS WITHIN 100 FEET OF PROPOSED SYSTEM. 4. A VARIANCE IS REQUESTED FOR REDUCTION IN OFFSET TO GROUNDWATER FROM V TO 4' FOR SOILS WITH PERC RATE OF <2 MPI. (310CMR15.405) GENERAL NOTES 1. THIS PLAN IS INTENDED FOR THE DESIGN OF THE SEWAGE DISPOSAL SYSTEM ONLY AND IS NOT TO BE USED TO ESTABLISH NEW OR EXISTING PROPERTY LINES OR DWELLINGS. 2. LOCATION OF WATER, GAS AND ELECTRIC UTILITY LINES IS APPROXIMATE. THE CONTRACTOR IS RESPONSIBLE FOR CONTACTING DIGSAFE AT 1-888-344-7233 AND THE YARMOUTH WATER DEPARTMENT PRIOR TO CONSTRUCTION. 3. INSTALLATION SHALL BE IN ACCORDANCE WITH THE STATE ENVIRONMENTAL CODE, TITLE 5 (310 CMR 15.000), THE LOCAL BOARD OF HEALTH REGULATIONS, AND THE CULTEC SEPTIC MA DESIGN AND INSTALLATION MANUAL. 4. THE CONTRACTOR MUST HOLD A VALID INSTALLER LICENSE IN THE TOWN OF YARMOUTH. 5. THE CONTRACTOR SHALL NOTIFY THE ENGINEER AND THE LOCAL BOARD OF HEALTH OF ANY CHANGES TO THESE PLANS. 6. CONTRACTOR SHALL CALL FOR INSPECTIONS AND APPROVALS FROM THE BOARD OF HEALTH AND THE ENGINEER AFTER: 6.1. EXCAVATION OF SAS AREA EXPOSING THE BOTTOM OF SYSTEM. 6.2. INSTALLATION OF SYSTEM COMPONENTS PRIOR TO BACKFILL. 7. ALL PIPING AND FITTINGS SHALL BE SCHEDULE SDR 35 PVC UNLESS OTHERWISE SPECIFIED. 8. FINISHED GRADE OVER THE SAS SHALL HAVE A MINIMUM 2% SLOPE. 9. EXISTING SYSTEM TO BE PUMPED DRY, CRUSHED AND FILLED WITH SAND. IF ANY COMPONENT LIES WITHIN V OF THE PROPOSED SYSTEM, THE COMPONENTS SHALL BE CRUSHED, REMOVED AND REPLACED WITH TITLE 5 FILL. 10. NO GARBAGE GRINDER SHALL BE INSTALLED AT THE EXISTING DWELLING. 11. PRESSURE DOSING SYSTEM PUMP SHALL BE LIBERTY FL 31A OR APPROVED EQUIVALENT. EFFLUENT BALL VALVE ADJUSTED TO OPERATE AT 26 GPM. 12. ELECTRICAL PERMIT REQUIRED FOR PRESSURE DOSED SYSTEM. 13. 1.25" SCH. 40 PVC PRESSURIZED DOSING LATERALS SHALL HAVE $" ORIFICES DRILLED AT THE 12 O'CLOCK POSITION EVERY 4 FEET ALONG LATERAL. SOIL EVALUATION TEST PIT LOGS Address: 180 South St, South Yarmouth, MA Test Date: 8/2/2023 Soil Evaulator: Dave Wason Sc#1501 Test Ho) e 1: Elev. = 7.0 DEPTH (inches) HORIZON / LAYER TEXTURE (USDA) COLOR (Munsell) 0-10 AE Loamy Sand 10YR3/1 10-25 B Loamy Sand 10YR6/8 25-120 C Fine Sand 2.5YR7/4 Notes: Groundwater observed at 77 inches (0.58). Adjusted SHGW estimated at 2.68. Percolation Test Location: Depth Results Rate TP1 25-37" could not saturate <2 mpi TOF (#182) = 8.1 BOTH SEPTIC TANK OUTLETS TO TOF (#180) = 7.9 PUMP CHAMBER (3 SDR 35 PVC) 7.0 t 9" MIN. . 4hSaR .a'b_1 20 MAN COp 3" MIN. 3" MIN. . e . 6" MIN. " MIN. INV (#182) = 6.3 10" MIN. - INV (#180) = 5.9 12" MAX. 4' (1,500 GST) 4' (2,000 GST) 12" MAX. SHGW 1= 2.68 SEPTIC TANKS AND PUMP CHAMBER SHALL BE WATERPROOFED BY MANUFACTURER OR COATED W/ THOROSEALO. 2,000 GALLON SEPTIC TANK (H-10) (#180) 1,500 GALLON SEPTIC TANK (H-10) (#182) SYSTEM PROFILE NOT TO SCALE Groundwater Adjustment Index Well MIW-29 Water Level Range Zone A Water Level for Index Well (08/2022) 8.75 Adjustment 2.1 Groundwater (observed) 0.6 SHGW (adjusted) 2.7 CONDUIT TO CONTROL PANEL. -----__ __ _-- 7.0 t NEMA 4X JUNCTION BOX 2" PVC UNION BALL VALVE. 1/8" WEEP HOLE 2" PVC SWING CHECK VALVE DESIGN CALCULATIONS 9 Bedrooms x 110 GPD/Bedroom 990 GPD SEPTIC TANK (Per 310CMR15.233) #180 South St: 5 Bedrooms x 110GPD/Bedroom 5S0 GPD Single Compartment: Minimum 48 Hours Flow 1,100 gallons Minumum Total Volume: 1,100 gallons Proposed Tank Volume: 2,000 gallons #182 South St: 4 Bedrooms x 110 GPO/Bedroom 440 GPD Single Compartment: Minimum 48 Hours Flow 880 gallons Minumum Total Volume: 880 gallons Proposed Tank Volume: 1,500 gallons SOIL ABSORPTION SYSTEM: Loading Rate (310CMR.15): 0.74 GPD/sq ft Area = 990 GPD / 0.74GPD/sq ft 1337.8 sq ft Select Cultec C-4 Chambers: Bed Configuration Cultec C-4 Chambers are a MassDEP I/A Technology approved for New Construction. Assumed 6.7 sq ft per Iin. Ft Total Chambers 25 Linearfeet of chambers= 25x 8ft 200.0 lin. ft Effective SAS Area (I/A) = 200 If x 6.7 sf/If 1340.0 sq. ft Flow = Area x 0.74 GPD/sq ft 991.6 GPD Buoyancy Calculations Septic Tank (1,500 GST) Tank & Soil: 12,000lbs + (10' 2" x 6' 1" x 9" x 100 Ibs/ft^3) = 16,640lbs Water Displaced: (10' 2" x 61" x 2.02' x 62.41bs/ft^3) = 7,7981bs [OK) Septic Tank 12.000 GST) Tank & Soil: 20,125 lbs + (12' 10" x 610" x 9" x 1001bs/ft^3)=26,7001bs Water Displaced: (10' 2" x 61" x 2.2' x 62.41bs/ft^3) = 12,030lbs (OKI Pump Chamber (2,000 GT) Tank & Soil: 20,125 lbs + (12'10" x 610" x 2" x 1001bs/ft^3)=37,5251bs Water Displaced: (10' 2" x 61" x 3.45' x 62.41bs/ft^3) = 18,865lbs [OK) SEE SAS CHAMBERS -^\� DETAIL 8.41 3:1 MAX 12" MIN. COVER 4 INCH INSPECTION \ I SLOPE PORT TO GRADE 2" SCH 40 p 10 25 CULTEC FIELD DRAIN C4 CHAMBERS 40' SOIL ABSORPTION SYSTEM (SAS): TOS 25 CULTEC C4 CHAMBERS: FIELD BOS 20'W x 40'L x 8.5" H � _4' -� -SURGE CAPACITY (61 ACTIVE VOLUME (15") _ PUMP SUBMERGENCE (9" SHG = I 2.68 r 1,500 GALLON PUMP CHAMBER (H-10) BOTTOM ON LEVEL, STABLE BASE MECHANICALLY COMPACTED WITH 6" CRUSHED STONE SEASONAL HIGH GROUND WATER ( W) I.JGEND V. WATER SURFACE ELEVATION GAS BAFFLE b'lsaL. Robial Water LTD 85 Courtland Street Providence, RI 02909 P: +1 (508) 954 0677 E:jay@robialwater.com CONSULTANTS: y T b SPEAKMAN EXCAVATING LLC 235 Great Western Rd Dennis, MA 02660 P: +1 (508) 432 5565 E: info@speakmanexcavating.com k 1 1 HEALTH DEPT, �- - - - - - - - - - - - - I I I I OF Mgss�c � IN I O� JAY M. yG g THRASHER CIVIL No.54434 10 4 S i I I I I 111111, I ``N OFSc o` DAN I A. SPEAKMAN No. 39402 E °� I S I I I I L - - - - - - - - - - - - -J Yarmouth Health Department PROVED Name Date 1. INTERNAL REVISION 08/30/2023 No. - REVISION/SUBMISSION DATE COPYRIGHT 2023 - Robial Water Ltd. This document, and the Ideas and design concepts incorperated herein, as an instrument of professional service, can not be used, in whole or in part for this or any other project, without the written authorization of Robial Water Ltd. PROJECT No. T52023.031 SHEET TITLE: SITE LAYOUT & SYSTEM DESIGN SHEET SIZE: 24 IN. X 36 IN. (ARCH D) DATE: 28 August 2023 SHEET NUMBER: SHEET 1 Of 1 PROJECT: RESIDENTIAL ONSITE WASTEWATER TREATMENT SYSTEM NEW CONSTRUCTION 180-182 South St South Yarmouth, MA 02664