SECTION 22 12 24
FACILITY F.R.P. BOLTED PANEL TYPE, POTABLE-WATER STORAGE NON-PRESSURE TANKS
PART 1 - GENERAL 
1.1 DESCRIPTION 
A. A F.R.P. Bolted Panel type water storage tank, completed, modular pedestal steel footing , Flanges, piping, drains, materials, labor, equipment, and all accessories as required. 

1.2 QUALITY ASSURANCE 
A. Criteria: 
1.	Manufacturer regularly and presently manufactures the item submitted as one of their principal products. 
2.	Installer, or supplier of a service, has technical qualifications, experience, trained personnel, and facilities to perform the specified work. 
3.	Product is certified to the sanitary requirements of NSF 61. 
4.	Product is in compliance to ASCE 7‐05: Minimum Design Loads for Buildings and Other Structures, AWWA D121‐12. 
5.	Manufacturer fabricates in ISO 9001:2008 facilities.
B. Design Code: American Society of Civil Engineers (ASCE) Buildings and Other
Structures - Allowable Minimum Design Load. 
   2. IBC and local building codes. 

1.3 SUBMITTALS 
A. Submit in accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA AND SAMPLES. 
B. Manufacturers' Literature and Data: 
1.	Materials. 
2.	Dimensions. 
3.	Fabrication. 
4.	Bolts & Nuts. 
5.	Sealing Materials. 
6.	Reinforcements and Supports. 
7.	Roof and Side Manhole Cover. 
8.	Air Vent.
9.	Support Stands and Ladders.
10.	Flanges. 
C. Detailed shop drawings. 
1.4 APPLICABLE PUBLICATIONS 
A. The publications listed below form a part of this specification to the extent referenced. The publications are referenced in the text by the basic designation only. 
B. American Society of Civil Engineers (ASCE): Minimum Design Loads for Buildings and Other Structures - ASCE/7-05. 
C. American Society for Testing and Materials (ASTM)
D. International Building Code: 2009 (IBC) 
E. NSF INTERNATIONAL                                                   (NSF) NSF/ANSI 61 (2010) Drinking Water System Components -Health Effects 
PART 2 - PRODUCTS 
2.1 TANK 
A. Tank design FRP Panel Type Water Tank shall be in compliance to ASCE 7‐05: Minimum Design Loads for Buildings and Other Structures, AWWA D121‐12 and fabricated in ISO 9001:2008 facilities. 
B. The water tank must be certified to the sanitary requirements of NSF 
61. 
C. Acceptable alternative: 316 stainless steel tank 

2.2 MATERIALS 
A. Materials for panels production shall be Isophtalic unsaturated polyester resin to conform to ASTM specifications: D638, D695, D790 and D792., and the glass fiber used shall be non-alkali type conforming to ISO 1172. 
B. Manufacturing process of panel shall be a Hot Press Molding System at 300°F (150°C) temperature and 3000 psi (20.5 MPA) with curing characteristics conforming to ISO-12114 and shrinkage properties to ISO-2577. The Sheet Molding Compound (S.M.C.) Raw Material shall be conforming to ISO-10352 and from an approved NSF 61 supplier. 
C. SMC forming panels shall be externally reinforced with F/G roving mesh of density not less than 87 oz/ft2 (230 g/m2) before the hot pressing process. 
D. Panels shall be of Fire class 2 or B or better with a flame spread index of 70 and a smoke development index of 450 conforming to ASTM E84 
– 12 Standard. 
F. Panels and covers shall be of Grey color in accordance to Munsell's value N‐7.0 to prevent light transmission, conforming to ASTM E903-96, 
in order to avoid algae growth inside the tank. (Value of light transmission shall not exceed 0.00%). 
2.4 DIMENSIONS 
A. Tolerance on each panel shall be within +/-0.03% of the nominal 
dimensions.
B. Tolerance with regard to panels and flange angle shall be within
+/-0.3° 

2.5 FABRICATION 
A. F.R.P. Panels shall be externally flanged at 90º on four sides. 
B. Thickness of flange for roof panels shall not be less than 1/4“ (6mm) with a landed width of not less than 2¼” (57mm), other panels' flange shall not be less than 13/32“ (10mm) and the landed width of all flanges shall not be less than 3“ (75mm). 
2.6 ACCESSORIES 
A. Bolts & Nuts 
1.	Bolts, nuts and washers for external fixing shall be of Hot Dipped Galvanized steel grade 8.8, and for internal fixing of Stainless Steel A4‐316 and shall conform to the requirements of ASTM A307, ASTM A325, ASTM A490 , ASTM F593 or DIN 933 (for bolts) and ASTM A194, ASTM A563 or DIN 934 (for nuts). 
2.	Bolt sets for connecting the flanges of inlet, outlet, overflow and drainage to water tanks shall be of food grade Rubber Capped type. 
3.	Diameter of main fixing bolts and nuts shall be not less than ½“(12mm) & at a rate of 8 bolt sets per linear meter. 

B. Sealing Materials 
1.	Sealant materials used for joints shall be chemically stable, non‐toxic, flexible, and resistant to ultraviolet rays and must be certified for non‐toxicity in accordance to NSF 61. 
2.	Material for the main solid sealant shall be made of S.E.B.S. (Stylene Ethylene Butyrene Styrene) i.e. Solid synthetic Rubber whereas material for the roof sealant shall be made of EPDM Rubber. 
3.	The main sealant shall be ribbed in not less than 4 locations. These ribs shall be continuous along the length of the sealant without any breaking. Such main sealant shall remain flexible and resistant to ultra‐violet rays. 
4.	The main sealant shall be certified to NSF 61 //Test report to be provided// : Toxicology reviewed for the effect on taste, odor, color and turbidity Toxic metals Cytotoxicity Microbiological growth such tests shall be performed by an accredited laboratory. 

D. Reinforcements and Supports of Water Tank 
1.	Water tanks shall be strengthened externally with hot‐dipped galvanized steel reinforcement conforming to ASTM A123. 
2.	Internal reinforcements for FRP Panel tanks, if required by manufacturer, shall be of Stainless Steel grade A4–316. 
3.	Support poles of ceiling panels shall be uPVC pipes or FRP pipe according to tank height and proper structural design. 
4.	Brackets securing the roof tank covers shall be made of food‐grade high density polyurethane material. 

E. Roof Manhole Cover 
1.	The roof manhole panel shall have a 30” (760mm) diameter clear opening and access door fixed with Stainless Steel Hinges and lock device. 
2.	The access door shall be designed to open at 135º Radius and to be detachable if required. 
3.	The access door shall be hermetically closed and light, dust and insect proof. 

F. Air Vent Air vents shall be made of 4” Dia (100mm) with net of mesh No. 22 and shall be light, dust and insect proof. 
G. Ladders Ladders and safety devices shall be provided and location of ladders shall be as shown on the drawings. In addition, safety cage, rest platforms, roof ladder handrails, and other safety devices shall be provided as required by federal or local laws or regulations. 

1.	Tanks above 3.3ft (1m) high shall have one external and one internal ladder fitted to every manhole access. 
2.	The external ladder shall be made of hot dipped galvanized steel conforming to ASTM A123 
3.	The internal ladder shall be made of FRP food grade material conforming to NSF61. 

2.7 FLANGES 
1.	Flanges shall be made of UPVC Full Face high pressure bolted type with EPDM Rubber Gasket ribbed in at least two locations. 
2.	Flanges shall be fixed to the tank panels with hot dipped Galvanized, food grade and Ultra violet resistant type Rubber capped Bolts. 
3.	Overflow opening shall be at least twice the size of Inlet and shall flow freely to the ground in order to avoid bottlenecking. 

PART 3 - EXECUTION 
3.1 INSTALLATION 
A. Tanks shall be installed in accordance with the manufacturer’s 
requirements. 

B. A detailed installation manual and method statement shall be provided by the manufacturer and tank execution shall be done accordingly. 

3.2 LEAKAGE TEST: 
A. Comply with AWWA D121-12 requirements. //..AWWA D121-12 Section 10.2: Once assembled the tank should be slowly filled with water to just beyond the first horizontal joint line which is normally at 3.3 ft (1 m). Walk around and inspect all joints and penetrations for leakage. Continue to fill tank slowly and repeat the process of a walk around visual inspection at each horizontal joint level until the tank is full. Leave the tank full for a period of at least 24 hours and do a final leakage/general conditions walk around inspection…// 
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