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STATE OF NEW YORK OFFICE OF GENERAL SERVICES
DESIGN AND CONSTRUCTION GROUP THE GOVERNOR NELSON A. ROCKEFELLER
EMPIRE STATE PLAZA ALBANY, NY 12242
ADDENDUM NO. 1 TO PROJECT NO. 43307
CONSTRUCTION WORK
MARCELL ROTH DAM REHABILITATION PHASE III DESIGN AND CONSTRUCTION
TOWN OF KENT PUTNAM COUNTY, NY
July 2, 2013 NOTE: This Addendum forms a part of the Contract Documents. Insert it in the Project Manual.
Acknowledge receipt of this Addendum in the space provided on the Bid Form. CD FILE ERROR 1. The Contract Document CD (Disk 1 of 1) is missing Sheet 4 of 12 under the Contract Drawings
folder. Drawing 43307-C-C-103.TIF was mistakenly omitted. TABLE OF CONTENTS 2. Page 000110-3, Add the Following Title to the Appendix:
“Permit Conditions” SPECIFICATION GROUP 3. Page 033000-5, Article 2.01, Add the Following Paragraph:
“L. Low Flow Penetrations: Schedule 40 PVC pipe to the size and dimensions shown on the Contract Drawings.
1. The pipe penetrations shall be located as shown on the Contract Drawings.”
4. Page 055000 – 2, Change Paragraph 1.04 B. to Read:
“B. At least 4 weeks prior to the planned start date, submit shop drawings showing the dimensions of the railings, railing extent, base plate, and connection details required to complete the work.”
5. Page 055000 – 3, Paragraph 2.01 B.5: Delete this paragraph in its entirety.
ADDENDUM NO. 1 TO PROJECT 43307-C July 2, 2013
Project No.43307-C
6. Page 055000 – 4, Paragraph 2.03 A:
Replace 20 gauge with 12 gauge metal decking.
7. Page 055000 – 4, Change Paragraph 2.03 C. to Read:
“C. Metal decking should be fastened to framing with stainless steel self-tapping sheet metal screws installed at each rib contact.”
8. Page 055000 – 4, Change Paragraph 2.03 D. to Read:
“D. Framing shall be connected to concrete walls with stainless steel Hilti brand wedge-anchors as indicated on the design plans.”
9. Page 220523 – 2, Change Paragraph 2.02 A. to Read:
“A. The slide gate shall be a 900 Series Stainless Steel Gate as manufactured by Whipps, Inc. of Athol, Massachusetts, or an approved equal, meeting the requirements of the American Water Works Association (AWWA) Standard for Fabricated Stainless Steel Slide Gates (ANSI/AWWA C561-04 latest edition). This standard provides the minimum requirements for the slide gate valve, including materials, general design, manufacture, testing, inspection, and shipment.”
10. Page 220523-2, Article 2.02, Add the Following Paragraphs:
“E. The slide gate handle support shall be constructed of stainless steel. Aluminum pedestals are not acceptable.
1. The support height shall be such that the handwheel or pinion shaft on the crank-
operated gearbox is located approximately 36 inches above the concrete spillway. 2. Wall brackets shall be used to support floor stands where shown on the Contract
Drawings and shall be constructed of stainless steel. 3. Wall brackets shall be reinforced to withstand compression at least two times the
rated output of the operator with a 40-lb effort on the crank or handwheel. 4. The design and detail of the brackets and anchor bolts shall be provided by the
gate manufacturer and shall be approved by the Engineer. The gate manufacturer shall supply the bracket, anchor bolts, and accessories as part of the gate assembly.
F. All slide gate accessories shall be standard products provided by the manufacturer.” 11. Page 315200-1, Change Paragraph 1.01.F. to Read:
“F. Prior to removal of the dewatering structure, the water level should be equalized on both sides of the structure, with the structure remaining in place for a minimum of 3 weeks to allow for monitoring of the downstream portion of the dam. If issues arise during this monitoring period, the dewatering structure shall be re-established.”
APPENDIX 12. Appendix Addendum:
ADDENDUM NO. 1 TO PROJECT 43307-C July 2, 2013
Project No.43307-C
a. A section titled “Permit Conditions” has been added to the Appendix. It includes a list of anticipated conditions that must be strictly followed for all activities upon issuance of the final permit(s).
DRAWINGS 13. Addendum Drawing: a. Drawing No. C-103 (Sheet 4 of 12) has been added to the Contract Drawings. It was
mistakenly omitted from the original drawing package. 14. Revised Drawing: a. Drawing No. D-501 (Sheet 5 of 12), noted “REVISED DRAWING 7/2/2013”
accompanies this Addendum and supersedes the same numbered originally issued drawing. 1. Section 2/3/5, Section 3/3/5, and Section 4/5/5: The turf reinforcement mat has
been moved beneath the topsoil layer. 15. Revised Drawing: a. Drawing No. D-502 (Sheet 6 of 12), noted “REVISED DRAWING 7/2/2013”
accompanies this Addendum and supersedes the same numbered originally issued drawing. 1. Section 3/3/6 and Section 5/3/6: The turf reinforcement mat has been moved
beneath the topsoil layer. 16. Revised Drawing: a. Drawing No. D-505 (Sheet 9 of 12), noted “REVISED DRAWING 7/2/2013”
accompanies this Addendum and supersedes the same numbered originally issued drawing. 1. Detail 4/4/9, Section 5/9/9, and Section 6/9/9: 2-inch diameter Schedule 40 low
flow penetration pipes have been added to the spillway inlet extension. 17. Revised Drawing: a. Drawing No. D-506 (Sheet 10 of 12), noted “REVISED DRAWING 7/2/2013”
accompanies this Addendum and supersedes the same numbered originally issued drawing. 1. Detail 2/4/10, Section 4/4/10, and Section 7/10/10: The lid has been revised
from 20 gauge to 12 gauge metal decking. 18. Revised Drawing: a. Drawing No. D-507 (Sheet 11 of 12), noted “REVISED DRAWING 7/2/2013”
accompanies this Addendum and supersedes the same numbered originally issued drawing. 1. Section 5/11/11: The lid has been revised from 20 gauge to 12 gauge metal
decking.
END OF ADDENDUM James Dirolf, P.E. Director of Design
Project Name: Marcel Roth Lake Dam Rehabilitation Location: California Hill State Forest, Town of Kent, Putnam County Project ID#: 43307 PERMIT CONDITIONS The final permit(s) for the Marcell Roth Dam Rehabilitation Project have not yet been issued. The following is a list of anticipated conditions that must be followed for all activities authorized by the permit: Erosion Control - Necessary erosion control measures, i.e., straw bales, silt fencing, etc., are to be placed on the downslope edge of any disturbed area. This sediment barrier is to be put in place before any disturbance of the ground occurs and is to be maintained in good and functional condition until thick vegetative cover is established. Drawdown - Before construction begins, Waywayanda Lake shall be drawn down to an elevation of 915.6 feet. Drawdown or dewatering of the impoundment area shall be done gradually and in a manner which does not cause a visible increase in turbidity downstream nor cause a loss of fish life unless written authorization by the Department is granted pursuant to Section 11-1321.5 of the Environmental Conservation Law. Maintain Water Flow During Work - During periods of work activity, sufficient flow of water shall be maintained in the outlet stream at all times by means of pump or siphon, to sustain aquatic life downstream. Discharge must be controlled to avoid scour and erosion. Temporary Coffer Dam - Prior to commencing work in the lake, the permittee shall install a cofferdam of non-erodible, easily removed material to isolate the work area from the rest of the lake. Examples would be sand bags wrapped in an impermeable membrane, concrete block, or commercially available PortaDam. All fish trapped within the cofferdam during the dewatering process shall be returned, alive and unharmed, to the water outside the confines of the cofferdam. No Turbidity from Dewatering - Water within the cofferdam shall be pumped out. No turbid water resulting from dewatering operations shall be discharged directly to or allowed to enter any stream or wetland. Such water shall be pumped to settling basins or to an upland vegetated area prior to any discharge to any stream or wetland. All other necessary measures shall be implemented to prevent any visible increase in turbidity or sedimentation downstream of the work site. Concrete Leachate - During construction, no wet or fresh concrete or leachate shall be allowed to escape into any wetlands or waters of New York State, nor shall washings from ready-mixed concrete trucks, mixers, or other devices be allowed to enter any wetland or waters. Only watertight or waterproof forms shall be used. Wet concrete shall not be poured to displace water within the forms. Clean Fill Only - All fill material utilized for this project shall consist of uncontaminated earthen materials only. Acceptable fill materials include gravel, rock, overburden, topsoil and similar natural mineral resources.
Re-filling the Impoundment - Waywayanda Lake will be allowed to begin to refill to former 921.0 foot elevation at conclusion of work or as further established herein by Dam Safety conditions. Re-filling of the impoundment following construction shall be done gradually and in a manner which provides sufficient flow of water downstream at all times to sustain fish and other aquatic life. Precautions Against Contamination of Waters - All necessary precautions shall be taken to preclude contamination of any wetland or waterway by suspended solids, sediments, fuels, solvents, lubricants, epoxy coatings, paints, concrete, leachate or any other environmentally deleterious materials associated with the project. Materials Disposed at an Upland Site - Any demolition debris, excess construction materials, and/or excess excavated materials shall be immediately and completely removed from the lake bed/bank/outlet stream and disposed of on an approved upland site more than 100 feet from any regulated freshwater wetland. These materials shall be suitably stabilized so as not to re-enter any water body, wetland, or wetland adjacent area. Seed, Mulch Disturbed Soils - All areas of soil disturbance resulting from this project (above the mean high water line) shall be seeded with an appropriate perennial grass seed and mulched with straw within one week of final grading. Mulch shall be maintained until soil is fully vegetated. If seeding is impracticable due to the time of year, a temporary mulch shall be applied within 5 days and final seeding shall be performed at the earliest opportunity when weather conditions favor germination and growth; but not more than six months after project completion and no later than the permit expiration date.
ELE
VA
TIO
N (F
T.)
910
912
914
916
918
920
922
924
926
908
928
930
4 4
2
SCALE: 1" = 4'
SPILLWAY INLET MODIFICATION SECTION
910
912
914
916
918
920
922
924
926
908
928
930
EL
EV
AT
IO
N (F
T.)
910
912
914
916
918
920
922
924
908
EXISTING SPILLWAY INLET
910
912
914
916
918
920
922
924
908
9
4 9
EXISTING CONCRETE
SPILLWAY BOX INLET
- SEE SHEET 9 FOR DETAILS
EXISTING GROUND SURFACE
EXISTING GROUND SURFACE
MODIFIED SPILLWAY INLET
EXISTING CONCRETE PAD
UPSTREAM SLOPE RE-GRADING
- SEE SECTION
EXISTING CONCRETE PAD
(TO REMAIN AND COVER AS
SHOWN)
EL. 921.0
(FINAL WATER ELEVATION)
TRASH RACK
- SEE SHEET 11 FOR DETAILS
EXISTING CONCRETE SPILLWAY
BOX INLET
- SEE SHEET 9 FOR DETAILS
SPILLWAY INLET EXTENSION
- SEE SHEET 9 FOR DETAILS
LOW LEVEL OUTLET TRASH RACK
- SEE DETAIL
EXISTING NON-FUNCTIONAL
SLUICE GATE (TO BE REMOVED
BY CONTRACTOR)
EL. 917.5
(EXISTING WATER
ELEVATION)
EXISTING CONCRETE OUTLET STRUCTURE
NOTE:
1. Existing conditions based on survey drawing completed by Greenman-Pedersen, Inc., in November 2012 and drawing
titled "Existing Conditions," Drawing No. C-101, completed by Greenman-Pedersen, Inc., dated March 6, 2012.
SECTION NOTES:
1. Spillway inlet modification work shall include removal of the existing non-functional sluice gate, removal of accumulated sediment to
approximate elevation 909 as shown, and extension of the existing spillway inlet to elevation 921.0.
2. The lake level may be lowered to elevation 915.6 during construction.
3. The Contractor may elect to install a temporary cofferdam/dewatering system to allow work to be completed in the dry. Operate and
maintain the dewatering system with pumps and/or siphons. Discharged water shall be directed onto a stabilized area to limit the
potential for erosion. Submit a dewatering plan as described in the project specifications. Remove dewatering system upon
completion of work.
SPILLWAY OUTLET
LOCKABLE SLIDE GATE HANDLE
SPILLWAY OUTLET
TRASH RACK GATE
COVER LIGHT STONE FILL WITH
BEDDING STONE TO PROVIDE
WALKING SURFACE
3
4 4
24" SLIDE GATE LOW LEVEL OUTLET
- SEE DETAIL
SLIDE GATE HANDLE SUPPORT
LIGHT STONE FILL
(DO NOT PROVIDE COMPACTION
ALONG SPILLWAY INLET STRUCTURE)
EXISTING TRASH RACK
(TO BE REMOVED BY CONTRACTOR)
12" LAYER LIGHT STONE FILL
EL. 909.0
6" LAYER TOPSOIL AND SEED
24" SLIDE GATE LOW LEVEL OUTLET
(INSTALL PER MANUFACTURER'S
RECOMMENDATIONS)
SLIDE GATE VALVE STEM
SECURE VALVE STEM AS
RECOMMENDED BY MANUFACTURER
4 4
3
SCALE: N.T.S.
SLIDE GATE DETAIL
CONCRETE SPILLWAY INV. EL 909.0
CONCRETE SPILLWAY WALL
CONTRACTOR TO PROVIDE
18" MIN. (MINIMUM OPENING IN EACH DIRECTION)
PENETRATION WITH A SMOOTH SURFACE
LOW LEVEL OUTLET TRASH RACK
- SEE DETAIL
9
4 9
12" LAYER LIGHT STONE FILL
GRADE TO ACCOMMODATE
TRASH RACK INSTALLATION
2
4 4
4
4 7
EXISTING CONCRETE PAD
(TO REMAIN AND BURIED)
EXISTING BURIED CONCRETE
SPILLWAY OUTLET
BURIED CONCRETE SPILLWAY EXTENSION
LIGHT STONE FILL
EXPOSED CONCRETE SPILLWAY EXTENSION
MEDIUM STONE FILL OUTLET
PROTECTION (CHINK VOIDS
WITH LIGHT STONE FILL)
6" DIA. SLOTTED PLASTIC CORRUGATED
DRAIN PIPE - SEE DETAIL
DRAIN PIPES TO DAYLIGHT INTO
OUTLET PROTECTION (TYP.)
- SEE SECTION
APPROXIMATE INLET
GRADING LIMIT
6
4 6
EXISTING EXPOSED OUTLET
HEADWALL TO REMAIN
SPILLWAY EXTENSION
- SEE DETAIL
5
4 8
6
4 11
RE-GRADED SLOPE
SPILLWAY INLET EXTENSION
TO EL. 921
- SEE DETAIL
LOCKABLE SLIDE GATE HANDLE
4
4 9
4
4 7
6
4 6
7
4 6
7
4 6
HAND RAIL
0 3' 6'6'
6
4 8
5
4 8
TRASH RACK
- SEE DETAIL
FINAL GRADES - SEE SHEET 3
9
3 6
2495 MAIN STREET, SUITE 432
Consulting Engineers, P.C.
McMahon & Mann
BUFFALO, NY 14214 FAX: (716) 834-8934
(716) 834-8932
Governor
Commissioner
3 5
2
SCALE: 1" = 4'
AUXILIARY SPILLWAY PROFILE
914
916
918
920
922
924
926
914
916
918
920
922
924
926
912 912
32.0' AUXILIARY SPILLWAY
1
3
1
3
EXISTING GROUND SURFACE
EL. 923.4
EL. 917.5
(EXISTING
WATER ELEVATION)
EL. 921.0
(FINAL
WATER ELEVATION)
LIGHT STONE FILL UPSTREAM SLOPE
UPSTREAM SLOPE RE-GRADING
- SEE SECTION
1
3 6
4" LAYER TOPSOIL AND SEED
910910
UPSTREAM AUXILIARY SPILLWAY
TRANSITION
- SEE DETAIL
4
5 5
EL. 912.7
3.1% SLOPE
MATERIAL TIE-IN
- SEE DETAIL
4
5 6
EL. 923.4
TURF REINFORCEMENT MAT
3 5
3
SCALE: 1" = 2'
AUXILIARY SPILLWAY SECTION
10.0' AUXILIARY SPILLWAY
EL. 923.4
EL. 924.5
SUITABLE FILL
ELE
VA
TIO
N (F
T.)
918
920
922
924
926
918
920
922
924
926
ANCHOR TURF REINFORCEMENT MAT AS
RECOMMENDED BY MANUFACTURER (TYP.)
EXISTING GROUND SURFACE
EL. 924.5
1
4
1
4
FINAL GRADE
TURF REINFORCEMENT MAT
4" LAYER TOPSOIL AND SEED
1
3
5 5
4
SCALE: 1" = 1'
UPSTREAM AUXILIARY
SPILLWAY TRANSITION DETAIL
1
3
6" (MIN.) LAYER BEDDING STONE
1.5' LAYER LIGHT STONE FILL
TURF REINFORCEMENT MAT
1
1
EL. 923.4
EL. 921.3
4" LAYER TOPSOIL AND SEED
ELE
VA
TIO
N (F
T.)
890
895
900
905
910
915
920
925
930
890
895
900
905
910
915
920
925
930
EL. 909
EL. 915
INV. EL. 917.6
EXISTING SPILLWAY INLET
EXISTING SPILLWAY
OUTLET
EXISTING GROUND SURFACE
SCALE: 1" = 6'
BORING PROFILE
3 5
1
10.0' AUXILIARY SPILLWAY
FINAL GRADE
EOB 25.5' (898.3)
BH5-12
GS EL. 923.8
MW4A-12
GS EL. 923.9
TOC EL. 926.6
EOB 11.0' (912.9)
BH3A-12
GS EL. 924.1
EOB 28.5' (895.6)
EOB 19.5' (904.7)
MW2-12
GS EL. 924.2
TOC EL. 926.9
MW4-12
GS EL. 923.8
TOC EL. 926.3
EOB 28.0' (895.8)
APPROXIMATE
ROCK SURFACE
EOB 19.5' (904.4)
BH6-12
GS EL. 923.9
BH3-12
GS EL. 924.0
EOB 14.5' (909.5)
AUGER REFUSAL
EOB 16.3' (907.9)
BH1-12
GS EL. 924.2
2495 MAIN STREET, SUITE 432
Consulting Engineers, P.C.
McMahon & Mann
BUFFALO, NY 14214 FAX: (716) 834-8934
(716) 834-8932
Governor
Commissioner
3 6
1
SCALE: 1" = 2'
UPSTREAM SLOPE RE-GRADING SECTION
1
3
ELE
VA
TIO
N (F
T.)
916
918
920
922
924
916
918
920
922
924
926 926
UPSTREAM
EXISTING GROUND SURFACE
(SEE SECTION NOTE 1)
EL. 917.5
(EXISTING
WATER ELEVATION)
EL. 921.0
(FINAL WATER ELEVATION)
6" LAYER TOPSOIL AND SEED
1
1
~2.5'
1
1
SILT FENCE (REMOVE PRIOR
TO ALLOWING WATER TO RISE
FROM EL. 917.5 TO 921.0)
- SEE DETAIL
1
3 7
FINAL GRADE
3 6
2
SCALE: 1" = 3'
DOWNSTREAM SLOPE RE-CONSTRUCTION SECTION
DOWNSTREAM
APPROXIMATE LOCATION OF 6" DIA. SLOTTED PLASTIC
CORRUGATED DRAIN PIPE AFTER TOPSOIL STRIPPING
(TYP.)
- SEE DETAIL
EXISTING GROUND SURFACE
(SEE SECTION NOTE 1)
S
LO
P
E
T
O
D
R
A
IN
SLOPE TO DRAIN
FOLLOWING REMOVAL OF TOPSOIL,
CONTRACTOR SHALL INSTALL DRAIN
PIPE IN LOW SPOT
MATERIAL TIE-IN
- SEE DETAIL
4
5 6
6" LAYER TOPSOIL AND SEED
SILT FENCE (REMOVE
FOLLOWING SITE RESTORATION)
- SEE DETAIL
1
3 7
0.5' (TYP.)
1.5' (MIN.)
5 6
4
6" DIA. SLOTTED PLASTIC
CORRUGATED DRAIN PIPE
SLOT - SEE TABLE
2
SLOT WIDTH
SLOT LENGTH
WATER INLET AREA
< 1/8"
< 1-1/4"
> 1in. /ft.
3 6
9
CONCRETE SURFACE SEAL
(TO REMAIN UNDISTURBED)
EXISTING GROUND SURFACE
(EL. VARIES)
FINAL GRADE
PROTECTIVE STEEL CASING
(TO REMAIN UNDISTURBED)
2" DIA. PVC PIPE
(TO REMAIN UNDISTURBED)
EL. 924.5
MOUND TOPSOIL AROUND CASING
TO PROMOTE DRAINAGE
3 6
8
6" LAYER TOPSOIL AND SEED
DETAIL NOTE:
1. Paint all wells with highly visible paint (i.e. orange).
3 6
5
SCALE: 1" = 2'
REINFORCEMENT MAT AUXILIARY SPILLWAY SECTION
2
2
1
2.0'
910
912
914
ANCHOR VEGETATED TURF REINFORCEMENT
MAT AS RECOMMENDED BY MANUFACTURER
(TYP.)
EL
EV
AT
IO
N (F
T.)
EXISTING GROUND SURFACE
910
912
914
FINAL GRADE
1
TURF REINFORCEMENT MAT
4" LAYER TOPSOIL AND SEED
910
912
914
ELE
VA
TIO
N (F
T.)
908
916
910
912
914
908
916
3.0'
1.0' LAYER LIGHT STONE FILL
FINAL GRADE
EXISTING GROUND SURFACE
4 6
6
SCALE: 1" = 2'
STONE FILL SLIDE GATE APPROACH SECTION
1
1
1
1
EL. 909.0
UPSTREAM RE-GRADE SLOPE
(EL. VARIES)
LIGHT STONE FILL
1.5' LAYER LIGHT STONE FILL
6" (MIN.) LAYER BEDDING
STONE
1
1
1
1
COVER LIGHT STONE FILL WITH BEDDING
STONE TO PROVIDE WALKING SURFACE
EL. 921.0
EL. 921.5
4 6
7
SCALE: 1" = 2'
GRADED ACCESS WALKWAY SECTION
3.0'
922
EL
EV
AT
IO
N (F
T.)
916
918
920
918
916
920
922
10.0'
FINAL GRADE
3 6
3
SCALE: 1" = 2'
DOWNSTREAM SLOPE AUXILIARY SPILLWAY SECTION
SUITABLE FILL
SECTION NOTES:
1. Transition the spillway from 10 feet wide to 2 feet wide to match the reinforcement mat spillway section.
2. Clear topsoil and organics prior to placement of suitable fill.
EXISTING GROUND SURFACE
(SEE SECTION NOTE 2)
6" TOPSOIL AND SEED
ANCHOR TURF REINFORCEMENT MAT AS
RECOMMENDED BY MANUFACTURER (TYP.)
1.0'
TURF REINFORCEMENT MAT4" LAYER TOPSOIL AND SEED
2495 MAIN STREET, SUITE 432
Consulting Engineers, P.C.
McMahon & Mann
BUFFALO, NY 14214 FAX: (716) 834-8934
(716) 834-8932
Governor
Commissioner
EL. 917.61
SCALE: 1/2" = 1'-0"
EXISTING CONCRETE SPILLWAY BOX INLET DETAIL
2 9
1
SCALE: 1/2" = 1'-0"
EXISTING CONCRETE SPILLWAY BOX INLET SECTION 9 9
2
2
9 9
2
9 9
EL. 920.05
CONCRETE SPILLWAY INLET
EXTENSION
EL. 917.61
EL. 921.0
SPILLWAY INLET EXTENSION DETAIL
4 9
4
SCALE: 1/2" = 1'-0"
SPILLWAY INLET EXTENSION SECTION 9 9
5
7
9 9
EL. 917.46
5
9 9
5
9 9
EL. 917.61
EL. 917.46
EL. 920.05
8'-1"
6'-7"
EL. 917.46
EL. 920.05
SCALE: 1/2" = 1'-0"
SPILLWAY INLET EXTENSION SECTION 9 9
6
3
9 9
2'-9"
4'-2
1
2
"
6'-2
1
2
"
2'-9"
4'-2
1
2
"
6'-2
1
2
"
3
9 9
6
9 9
6
9 9
EL. 921.0
10'-1"
2'-9"
6'-7
1
4
"
SCALE: 1/2" = 1'-0"
EXISTING CONCRETE SPILLWAY BOX INLET SECTION 9 9
3
1'-9
1
2
"1'-8"
6'-2
1
2
"
10'-1"
SCALE: 1/2" = 1'-0"
5
1
4
" CLR. (TYP.)
5
1
4
" CLR.
#4 BAR @ 12" VERT., E.F.
#4 BAR @ 5" HORIZ., E.F.
5
1
4
" CLR.
5
1
4
" CLR.
8
1
2
" EMBEDMENT (TYP.)
- SEE DETAIL
7
9 9
8
9 9
8
9 9
EL. 917.61
5
1
4
" CLR.
5
1
4
" CLR.
5
1
4
" CLR.
5
1
4
" CLR.
9"
25" REINF. BAR
OVERLAP (TYP.)
25" REINF. BAR
OVERLAP (TYP.)
5
1
4
" CLR. (TYP.)
9"
2'-9"
4'-2
1
2
"
1
1
2
" CLR. 1
1
2
" CLR.
DETAIL NOTE:
1. Each penetration shall be centered horizontally and vertically between the reinforcement bars.
2'-8
7
8
"
2'-8
3
8
"
LOW FLOW INLET PENETRATION (TYP.)
(2" DIA. SCH. 40 PVC PIPE)
2'-8
7
8
" 2'-8
3
8
"
LOW FLOW INLET PENETRATION (TYP.)
(2" DIA. SCH. 40 PVC PIPE)
INV. EL. 920.14
10'-1" 8'-1" 6'-7"
1
1
2
" CLR.
INV. EL. 920.14
LOW FLOW INLET PENETRATION (TYP.)
(2" DIA. SCH. 40 PVC PIPE)
(SEE NOTE 1)
8
1
2
" EMBEDMENT
SCALE: 1-1/2" = 1'-0"
REINFORCEMENT BAR EMBEDMENT DETAIL
9 9
8
5
1
4
" CLR. (TYP.)
2" WIDE x
1
4
" THICK
FLAT BAR
#6 REBAR (TYP.)
18" MIN. PENETRATION
6" x 6" CAGE
OPENING (TYP.)
10
9 9
10
9 9
4 9
9
SCALE: 1" = 1'
LOW LEVEL OUTLET TRASH RACK DETAIL
#6 REBAR (TYP.)
2" WIDE x
1
4
" THICK
FLAT BAR
1
2
" DIA. STAINLESS STEEL WEDGE
ANCHORS (TYP.) WITH 3" EMBEDMENT
CONCRETE SPILLWAY WALL
9 9
10
SCALE: 1" = 1'
LOW LEVEL OUTLET TRASH RACK SECTION
30"
30"
FILLET WELD CAGE BARS
TO FLAT BAR (TYP.)
FILLET WELD CORNERS
OF FLAT BAR FRAME
1
2
" DIA. BOLT
CONNECTION (TYP.)
C 18" MIN. PENETRATION
L
TRASH RACK C
L
TACK WELD CAGE BAR AT
EACH CROSSING LOCATION
DETAIL NOTE:
1. Center the low level outlet trash rack over the concrete penetration.
2495 MAIN STREET, SUITE 432
Consulting Engineers, P.C.
McMahon & Mann
BUFFALO, NY 14214 FAX: (716) 834-8934
(716) 834-8932
Governor
Commissioner
43'-0"
22'-0"
FLAT COVER
16'-0"
(OPEN TOP TRANSITIONS FROM EL 915.8 TO 910.6)
5'-0"
EXISTING CONCRETE SPILLWAY OUTLET
EXISTING COVERED SPILLWAY
3
10 11
3
10 11
2'-0"
3'-3"
1
10 11
2
10 11
2
10 11
1
10 11
4
10 11
5'-0"
9"
1'-10"
3'-4"
6'-0"
9"
6'-0"
11"
2'-1"
9"
WINGWALL
SCALE: 3/8" = 1'-0"
EXISTING SPILLWAY HEADWALL DETAIL
2 10
1
3
10 10
3
10 10
EL. 919.03
EL. 917.04
INV. EL. 908.97
10 10
3
1'-0"
11"
11"
WINGWALL
WINGWALL
SCALE: 3/8" = 1'-0"
SPILLWAY EXTENSION DETAIL
4 10
2
SCALE: 3/8" = 1'-0"
EXISTING SPILLWAY HEADWALL SECTION
1010
4
SCALE: 3/8" = 1'-0"
SPILLWAY EXTENSION SECTION
COVER FOR EXISTING SPILLWAY
- SEE DETAIL
5
10 10
COVER TO EXISTING WALL
CONNECTION - SEE DETAIL
1'-0"
3'-9
1
4
"
6'-3
1
2
"
3" CLR.
1
1
2
" CLR.
1
1
2
" CLR.
4
10 11
COVER FOR EXISTING SPILLWAY
- SEE DETAIL
EXISTING WALL TO WALL CONNECTION
- SEE DETAIL
6
10 10
7
10 10
7
10 10
4
10 10
4
10 10
HANDRAIL
22'-0"
FLAT COVER
43'-0"
HANDRAIL
16'-0"
(OPEN TOP TRANSITIONS FROM EL 915.9 TO 910.6)
5'-0"
3"x3"x
1
4
" GALVANIZED ANGLE
12 GAUGE METAL DECKING
(TO SERVE AS LID) (CONNECT TO
ANGLE WITH SELF TAPPING SHEET
METAL SCREW AT EACH INTERFACE)
6"
6"
12 GAUGE METAL DECKING
(TO SERVE AS LID)
IF CONSTRUCTION JOINT IS
NECESSARY - SEE DETAIL
3
10 12
5'-0" 6'-8"
3"x3"x
1
4
" GALVANIZED ANGLE
(TYP. BOTH SIDES)
EL. 919.8
EL. 917.5
7'-4"
3" CLR.
EL. 915.9
EL. 910.6
EL. 908.6
9"
3" CLR.
25" REINF. BAR
OVERLAP (TYP.)
25" REINF. BAR
OVERLAP (TYP.)
7'-7"
6'-4"
EL. 908.97
8
1
2
" EMBEDMENT
SCALE: 1-1/2" = 1'-0"
COVER TO EXISTING WALL CONNECTION DETAIL
10 10
5
9"
9"
8
1
2
" EMBEDMENT 25" SPLICE LENGTH
SCALE: 1-1/2" = 1'-0"
EXISTING WALL TO WALL CONNECTION DETAIL
10 10
6
10"
8
1
2
" EMBEDMENT (TYP.)
SCALE: 3/4" = 1'-0"
COVER TO EXISTING WALL CONNECTION SECTION
10 10
7
9"
2495 MAIN STREET, SUITE 432
Consulting Engineers, P.C.
McMahon & Mann
BUFFALO, NY 14214 FAX: (716) 834-8934
(716) 834-8932
Governor
Commissioner
2
11 12
2
11 12
2
11 12
3" CLR. 3" CLR.
3" CLR. 3" CLR.
3" CLR. 3" CLR.
7'-7"
9"
10"
6'-6"
SCALE: 1/2" = 1'-0"
COVER FOR EXISTING SPILLWAY DETAIL
10 11
4
5
11 11
5
11 11
14'-1"
10'-2
1
2
"
2'-4
3
16
"
6'-9
5
8
"
4'-10
3
8
"
SCALE: 3/8" = 1'-0"
TRASH RACK DETAIL
4 11
6
7
11 11
7
11 11
8
11 11
4'-10
3
8
"
SLIDE VALVE
- SEE DETAIL
3
4 4
8
11 11
9
11 11
9
11 11
TYPICAL CORNER
- SEE DETAIL
4
11 12
3'-8
1
8
" (TYP.)
5
'
-
0
7
1
6
"
(
T
Y
P
.
C
O
R
N
E
R
)
14'-1"
EL. 921.0
EL. 920.0
EL. 921.0
EL. 924.5
2'-0"
(TYP.)
SCALE: 1/2" = 1'-0"
TRASH RACK SECTION - 11 11
7
1
11 12
1' (TYP.)
3'-6" (TYP.)
2'-0"
(TYP.)
EL. 920.0
EL. 921.0
EL. 924.5
1
11 12
SCALE: 1/2" = 1'-0"
TRASH RACK SECTION - 11 11
8
10'-2
1
2
"
1' (TYP.)
3'-6" (TYP.)
45° (TYP)
45° (TYP)
6
11 12
6
11 12
7
11 12
7
11 12
SCALE: 3/4" = 1'-0"
COVER FOR EXISTING SPILLWAY SECTION
11 11
5
9"
7'-7"
3'-8
3
8
"
11
3
4
"
9"
1'-5
5
8
"
9"
1
1
2
" CLR. (TYP.)
2'-1"
2'-1"
10"
2'-1"
2'-1"
EL. 920.0
EL. 921.0
EL. 924.5
14'-1"
9"
9"
SCALE: 1/2" = 1'-0"
TRASH RACK CAGE SECTION
11 11
9
EL. 922.0
DETAIL NOTES:
1. Trash rack cage shall be lockable.
2. Provide sign on gate to read "Authorized Personnel Only".
7
11 12
8
11 12
2495 MAIN STREET, SUITE 432
Consulting Engineers, P.C.
McMahon & Mann
BUFFALO, NY 14214 FAX: (716) 834-8934
(716) 834-8932
Governor
Commissioner
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