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SECTION 8
APPENDIX
Figure 1 - Existing Filter Media Depths
11'-4"
FILTER NO. 4
FIGURE 4 - FILTER 4 RELOCATION
H:\2020\200559\DWG\SHEETS\FIGURE 4.DWG - WORK - 7/6/2021 5:29:54 PM - GEORGIA CONWAY
DRAWING PLAN WRITTEN NOTES:
1. THE FILTER BUILDING PLAN VIEW DRAWING IS FROM A 1967 IMPROVEMENTS
PROJECT, PRIOR TO FILTER 4 INSTALLATION. RECORD DRAWINGS FROM WHEN
FILTER 4 WAS INSTALLED ARE UNAVAILABLE. THIS PLAN VIEW IS INCLUDED
ONLY TO SHOW THE APPROXIMATE LOCATION OF FILTER 4 WITHIN THE FILTER
BUILDING. ALL MEASUREMENTS SHALL BE FIELD VERIFIED.
2. THIS WORK INVOLVES RELOCATING FILTER 4 AND ALL ASSOCIATED PIPING
AND APPURTENANCES 3 FEET SOUTH OF THE CURRENT LOCATION.
FILTER 4 EXISTING PIPING ARRANGEMENT
FILTER 4 RELOCATION
FILTER 1
FILTER 2
FILTER 3
SCALE: 1/4" = 1'-0"
Le
ng
th o
f T
ren
ch
Dra
in
to b
e F
ille
d In
Centerline of New
& Relocated Position
RELOCATE3'-0"
SOUTH
Village of Brewster WTP Rev. 0 Filter #4 Tank Relocation 10/14/20 (Project 200559)
#4 Filter Reloc_Struct Notes_Revised.docx Pg 1 of 3 CT Consultants_200559
Structural Notes
1. Tank Data (Refer to Item 22 below for reference Drawing information):
a. Estimated Weight:
Bare/Shipping Weight (Empty): 8600 lbs*
Overall Weight [Drained plus concrete fill only]: 24,800 lbs* b. Material: ASME SA 516 Gr 70 Steel; Top/Bot Head @ 9/16” thk, Shell @ 7/16” thk, painted inside
and out. c. Dimensions: Overall Tank Dimensions not including piping/connections: 9.12ft Dia. (out/out of
flange pads) x 10.67ft ± Ht (Bot of feet to top of upper flanged nozzle) d. Support Geometry: Six (6) support legs with adjustable saddle at 3.0ft radius, projecting ±5” below
lowest part of tank. e. Tank Description/Makeup:
“108” x 7’ straight side shell steel, Ferrosand CR Filter tank. All welded construction inside and out. Working pressure of 100psi., ASME Code with Stamp….The interior of the tank was painted with (1) coat, 3-5 mils of TNEMEC series #20-1211 (Red) Pota-Pox Primer and (1) coat 4-6 Mils of TNEMEC series #FC20-AA90 (White) finish. The exterior of the tank was painted with (1) coat, 3-5 Mils of TNEMEC series #20—1211 (Red) Pota-pox primer.”
f. Tank contents (To be removed by Owner prior to relocation, except as noted):
17ft3 0.5 - 0.6 mm Gravel Approx’d Wt = 2200 lbs
16ft3 #10 -1/4” Gravel Wt = 1900 lbs
16 ft3 ¼” - ½” Gravel Wt = 2000 lbs
16 ft3 ½” - ¾” Gravel Wt = 2100 lbs
30 ft3 ¾” - 1½” Gravel Wt = 4000 lbs
108ft3 Concrete Fill Wt = 16,200 lbs* (To remain in Tank)
79 ft3 Anthracite (Ferrofilt) Wt = 4425 lbs
126 ft3 Manganese Greensand (Ferrosand) Wt = 16,400 lbs
110lbs Potassium Permanganate Wt = 110 lbs
* Note - Contractor to verify actual weight with Manufacturer prior to lifting/moving tank. 2. Tank shall be relocated 3.0ft due South of its current location. East/West tank alignment and orientation
are unchanged and shall remain in their relative position to accommodate piping and utility re-connection. Refer to attached Filter Building Plan for Tank #4 relocation schematic and reference dimensions.
3. Prior to initiation of work, Contractor shall observe the current condition of the affected concrete floor on the South side of the Filter Tank. If the subject floor surface differs from that at the current tank location and does not afford a level/flat surface for adequate bearing support of the relocated tank feet, the Contractor shall contact the Engineer.
4. Filter tank shall be completely drained and all contents removed by Owner (with exception of the concrete fill) prior to lifting & moving. Contractor to verify with Owner that this activity has been completed, prior to initiation of work.
5. Contractor shall size all jacking, transporting and rigging equipment related to this relocation project for a min safety factor of 4.0.
6. Tank shall be lifted by jacks and placed upon low profile roller skid machinery movers to transport tank
to the relocated position. Cribbing design to distribute the load and prevent tank damage shall be the responsibility of the Contractor. Softeners shall be used between the interface of any steel cribbing/shoring and the steel tank.
Village of Brewster WTP Rev. 0 Filter #4 Tank Relocation 10/14/20 (Project 200559)
#4 Filter Reloc_Struct Notes_Revised.docx Pg 2 of 3 CT Consultants_200559
7. Roller skids shall have poly coated steel wheels to prevent damage to the existing concrete floor. Contractor shall take necessary precautions to avoid loading any floor grating along the load path.
8. Contactor shall coordinate work with the Owner and other Contractors/Trades to ensure that all tank
connections (mechanical, electrical, etc.) have been disconnected prior to jacking and moving. 9. Existing building structure including overhead open web joists and/or beams shall not be used for
rigging and moving the filter tank. 10. Tank shall only be lifted high enough to place roller skid machinery movers beneath the tank.
11. Work shall be in accordance with the construction drawings, construction specifications and the latest
edition of the applicable local and state building codes. 12. It shall be the Contractor's responsibility to visit the site and become familiar with all existing conditions.
a. The Contractor shall field verify any dimensions and elevations as noted on the drawings or as may be required, prior to construction, to minimize field changes.
b. The Contractor shall notify the Owner immediately of any inconsistencies between the drawings and the field conditions that could affect the construction.
c. Dimensions and elevations marked "ref" are for reference only and shall be field verified by the Contractor prior to using them for any construction.
13. The Contractor shall coordinate all construction activities with the Owner so no interference occurs with
plant operations.
14. The Contractor shall at all times keep the work area and surrounding premises free of waste, surplus materials, rubbish, and debris resulting from the work.
15. Materials and equipment necessary to complete the work shall be stored at Owner designated
location(s). 16. The Contractors and Subcontractors shall familiarize themselves and their employees with all the
regular and special safety practices and procedures used by the Owner. 17. It is the Contractor's sole responsibility to determine adequate jacking, transporting and cribbing
procedure/sequence and insure the safety of the construction personnel, building and its component parts throughout this project. This includes the addition of whatever shoring, temporary bracing, etc. that may be necessary.
18. The Contractor shall perform all construction activities for the project in a manner and sequence that is
based on accepted industry standards that recognize the interaction of the components that comprise the structure, without causing distress, unanticipated movements or irregular load paths as a result of the construction means and methods employed.
19. No welding or fixed connection of any kind shall be made to the tank to facilitate jacking, cribbing,
moving, etc. without the express written authorization from the Owner and tank manufacturer. 20. In the event any existing utilities or facilities components are damaged by the Contractor during this
project, the Contractor shall make the necessary repairs at no expense to the Owner.
The Contractor shall protect existing building, equipment and utilities from damage caused by rigging, movement, relocation and other hazards created by tank lifting/rigging operations.
Village of Brewster WTP Rev. 0 Filter #4 Tank Relocation 10/14/20 (Project 200559)
#4 Filter Reloc_Struct Notes_Revised.docx Pg 3 of 3 CT Consultants_200559
21. Tank shall be re-installed at the new location in conjunction with the following:
a. Tank leg saddles shall be adjusted to provide full bearing support on the concrete floor, in conformance with any incidental floor contour/slope at the new location, to provide a level/plumb tank installation. Where full bearing atop of the existing concrete surface cannot be achieved, the requirements of item #23 below shall apply.
b. Tank is currently free standing with no connection to the slab or structure and shall be installed likewise at the new location.
c. Tank load shall be gradually applied to the cribbing and/or concrete floor without impact to avoid damage to the tank, concrete slab and overall building structure.
22. The following vendor drawings are provided for Contractor reference, only. Information utilized from these documents shall be verified by the Contractor prior to construction, to ensure the safety of the construction personnel, building and its component parts throughout the project.
a. H & T, Inc. Dwg 31113-A01 Ferrosand CR Filter Tank Details b. H & T, Inc. SK 31113-C01 Filter Interior Details (Ferrosand) c. H & T, Inc. SK 31113-C02 108” Inlet Distribution System d. H & T, Inc. SK 31113-C03 108” underdrain System e. O&M Manual L-684, Pg 1 Equipment, Parts & Material List
23. Where the surface condition of the floor area on the South side of the Filter tank does not provide
acceptable surface contour (flatness, levelness) allowing full bearing support of the adjustable tank feet, the following steps shall be taken to prepare the floor to provide level/plumb tank support:
a. Roughen the existing surface 3/8” min amplitude to remove any bond inhibiting materials. b. Pressure wash clean the roughened area with clean water to remove all dust, dirt, loose concrete,
etc. c. Coat roughened area with Sika Armatec 110 epoxy bonding agent or approved equal. d. Overlay prepared area with SikaGrout-328 or approved equal to provide a level/flat surface for
adequate bearing support of the tank feet. e. All material shall be installed in accordance with manufacturer recommendations and requirements.
24. At the Southeast side of the tank, the Southern end of the North/South floor trench drain (South of the
East/West connector trench drain) shall be bulk-headed and filled with concrete to floor level by the Owner/General Contractor, in accordance with the following:
a. Concrete shall be a high early strength mix with a min 28 day compressive strength of 4000psi and max water/cement ratio of 0.45.
b. Concrete shall be reinforced with #4 ASTM A615 Gr 60 rebar, each way, 2” clear of all exposed surfaces.
c. Concrete finish shall match the finish of the exist adjacent floor areas. d. At the interface of new to existing concrete, the existing surface shall be roughened, thoroughly
cleaned of any dust, dirt, loose/deteriorated concrete and other bond inhibiting materials and subsequently coated with an epoxy bonding agent prior to placing the concrete.
e. Concrete fill shall be adequately moist cured per ACI recommendations/requirements. f. Concrete shall not be loaded for at least 3 days after placement and at least 75% of the design
compressive strength has been reached.
25. Following adequate cure and strength development of the aforementioned concrete fill, Owner/General Contractor may proceed with installation of the pipe brace support atop of the concrete fill to support the 6”± Dia. blue riser pipe from the floor, to eliminate overhead loading of the roof joist above.
