DAM AND POND No 3 DAM REHABILITATION PROJECT Village of Tuxedo Park Meeting March 15 2017 Critical Dam Safety Criteria Wee Wah Lake Dam Is Spillway Capacity sufficient to pass SDF 50 of PMF ID: 598712
Download Presentation The PPT/PDF document "WEE WAH LAKE" is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.
Slide1
WEE WAH LAKE
DAM
AND POND No. 3 DAM REHABILITATION PROJECT
Village of Tuxedo Park
Meeting
:
March 15, 2017Slide2
Critical Dam Safety Criteria
Wee
Wah
Lake Dam
Is Spillway Capacity sufficient to pass SDF (50% of PMF)
Stability of the concrete gravity and earthen embankment
Can
outlet works effectively drawdown the pool level in event of dam emergency
Slide3
Wee
Wah
Lake Dam
Earthen Embankment
Wee
Wah
Lake
Service Spillway
Auxiliary Spillway
Wee
Wah
Road (Crest of Dam)
Stop Log Gate
Left Abutment
Right Abutment
Stilling BasinSlide4
Contract Drawings & Permitted Improvements
Clear Brush and Large
Trees and Flatten D/S Slope, Provide Drainage and MonitoringSlide5
Contract Drawings & Permitted Improvements
Construct Low Level Outlet w/in Service Spillway Slide6
Contract Drawings & Permitted ImprovementsSlide7
Service Spillway
Service Spillway Weir Currently at El. 492.5’, New El. 492’
Service Spillway (Crest El 496.9’)
Service Spillway & LLOSlide8
Repair and Improve
Stability of Auxiliary Spillway, M
itigate Seepage
Discharge
through Floor of Spillway Structure
Contract Drawings & Permitted ImprovementsSlide9
Auxiliary Spillway (Left Side)
Auxiliary Spillway Weir El. 493.0’ currently, new crest to El. 492.5’
Auxiliary Spillway Training WallSlide10
Auxiliary Spillway (Left Side)
Leakage Through Auxiliary Spillway
Auxiliary Spillway Weir El. 493.0’
Auxiliary Spillway Training WallSlide11
Auxiliary Spillway (Right Side)
Leakage Through Auxiliary Spillway
Service Spillway
Auxiliary Spillway Weir
El. 493.0’Slide12
Auxiliary Spillway (Lower Floor)
Seepage Discharge through Auxiliary Floor
Reinforced Concrete Slabs over Pore water Relief Wells
Auxiliary Spillway Stone/Masonry FloorSlide13
Contract Drawings & Permitted ImprovementsSlide14
Contract Drawings & Permitted Improvements
Construct
Parapet Wall along Crest of
DamSlide15
Parapet Wall
Left Abutment
Wall Alignment
Parapet Wall Along Right Side of RoadSlide16
Parapet Wall
Contract Drawings & Permitted Improvements
Wee
Wah
Road (Dam Crest) at approx. El. 498Slide17
Pond No. 3 Dam
Earthen Embankment
Third Pond
Primary Spillway
Low Level Outlet Channel Beneath Splash Pad
(Crest of Dam)
Left Abutment
Right Abutment
Discharge Channel to Wee
Wah
LakeSlide18
Critical Dam Safety Criteria
Pond No. 3 Dam
Is Spillway Capacity sufficient to pass SDF (the 100-yr Storm)
Structural Stability of the stone masonry and earthen embankment segments of the dam.
Can
outlet works effectively drawdown the pool level in event of dam emergency
Slide19
LLO Siphon System
Contract Drawings & Permitted Improvements
Flow Priming and Control Vault
Discharge
IntakeSlide20
LLO Siphon System
Contract Drawings & Permitted Improvements
Flow Priming and Control Vault
Discharge
IntakeSlide21
Contract Drawings & Permitted Improvements
Sound Mortar
Open Masonry Joints
Repointing Stone MasonrySlide22
Questions?