05 05 24.10_AM001.pdf

SECTION 05 05 24.10

SIDE SEAL ASSEMBLIES

PART 1 GENERAL

1.1 APPLICABILITY

This section applies to the side seal assemblies, and all components required to fabricate these assemblies. Refer to section 05 05 23.16 STRUCTURAL WELDING for all welds.

1.2 REFERENCES

The publications listed below form a part of this section to the extent referenced. The publications are referred to within the text by the basic designation only.

ASTM INTERNATIONAL (ASTM)

ASTM A193/A193M (2014a) Standard Specification for Alloy-Steel and Stainless Steel Bolting Materials for High-Temperature Service and Other Special Purpose Applications

ASTM A276 (2013a) Standard Specification for Stainless Steel Bars and Shapes

ASTM A36/A36M (2014) Standard Specification for Carbon Structural Steel

ASTM D1149 (2007; R 2012) Standard Test Method for Rubber Deterioration - Surface Ozone Cracking in a Chamber

ASTM D 2137 (2011) Standard Test Methods for Rubber Propoerty - Brittleness Point of Flexible Polymers and Coated Fabrics

ASTM D1330 (2004; R 2010) Rubber Sheet Gaskets

ASTM D2240 (2005; R 2010) Standard Test Method for Rubber Property - Durometer Hardness

ASTM D395 (2014) Standard Test Methods for Rubber Property - Compression Set

ASTM D412 (2006a; R 2013) Standard Test Methods for Vulcanized Rubber and Thermoplastic Elastomers - Tension

ASTM D471 (2012a) Standard Test Method for Rubber Property - Effect of Liquids

ASTM D572 (2004; R 2010) Rubber Deterioration by Heat and Oxygen

SECTION 05 05 24.10 Page 1

PN480415

WILBUR D. MILLS, POOL NO. 2

TAINTER GATE PAINTING

ARKANSAS COUNTY, ARKANSAS SOLICITATION NO. W9127S20R0011

AMENDMENT TO SOLICITATION NO.

W1927S20R0011 ON 08/28/2020

ASTM D573 (2004; R 2010) Standard Test Method for Rubber - Deterioration in an Air Oven

1.3 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-02 Shop Drawings

Shop Drawings; G

SD-03 Product Data

Rubber Side Seals; G Stainless Steel Fasteners; G Stainless Steel Bars and Plates; G

PART 2 PRODUCTS

2.1 SYSTEM DESCRIPTION

The side seal assemblies shall be replaced as indicated on the Drawings.

The Contractor shall make all necessary repairs and adjustments to these assemblies.

2.2 Stainless Steel Components

2.2.1 Stainless Steel Fasteners

SS Fasteners shall conform to ASTM A193/A193M , Grade B8 UNO.

2.2.2 Stainless Steel Bars and Plates

SS Bars and Plates shall be ASTM A276 type 304.

2.3 Steel Shapes

Angles and retainer plates shall be ASTM A36/A36M.

2.4 Rubber Side Seals

Rubber side seals shall be molded natural rubber, configuration as indicated on the Drawings, and contain reinforcing carbon black, zinc oxide, accelerators, antioxidants, vulcanizing agents, and plasticizers.

Rubber side seals in contact with the pier wall/side seal embed plate shall be coated with Teflon (TFE). Physical characteristics shall meet the following requirments:

PHYSICAL TEST TEST VALUE TEST METHOD

Durometer Hardness 60 to 70 ASTM D2240

SECTION 05 05 24.10 Page 2

PN480415

WILBUR D. MILLS, POOL NO. 2

TAINTER GATE PAINTING

ARKANSAS COUNTY, ARKANSAS SOLICITATION NO. W9127S20R0011

PHYSICAL TEST TEST VALUE TEST METHOD

Tensile Strength 2800 psi ASTM D412, Method A

Elongation at Break 400% ASTM D412

300% Modulus 900 psi ASTM D412

Minimum Tensile Strength after accelerated aging (90 hrs in oxygen at 158 deg F)

80% ASTM D572, ASTM D573

Ozone Resistance (70 hours at 104 deg F at 300 ppm ozone and 20% strain on specimen)

No Cracks ASTM D1149

Maximum Compression Set 30% of original deflection ASTM D395, Method B

Water Absorption (maximum change in weight)

5% Max ASTM D471

Low Temperature Brittleness Non-Brittle 3' at -40 deg F ASTM D 2137, Method A

2.5 Neoprene Gasket

Neoprene gasket shall be ASTM D1330.

PART 3 EXECUTION

3.1 SIDE SEAL ASSEMBLIES

The side seal assemblies shall be removed prior to cleaning and painting the Tainter gates. The assemblies include the rubber seals, retainer plates, support angle, neoprene gaskets, and all fasteners. The rubber seal, support angle, retainer plates, and associated fasteners shall be replaced when directed by the COR.

Side seal support angles and retainer plates shall be shop fabricated, including Shop Drawings, to the greatest extent possible. Upon fabrication, and prior to assembly, the steel shapes shall be painted to the same requirements as the gate.

After the gates have been painted, the side seal assemblies shall be installed and adjusted to ensure contact between the side seal and pier wall, when the gate is in the closed position, with a preset of 1/4 in +/- 1/8 in. Preset is defined as the distance the seal would deflect into the pier wall, if the wall were removed. Moly disulfide dry powder or Teflon powder shall be applied to the threads of all side seal bolts prior to tightening. When new side seals are identified fot installation the bottom corner of the side seal assemblies shall be trimmed to obtain seal at the bottom of the gate in accordance with maximum gap indicated elsewhere in this specification.

SECTION 05 05 24.10 Page 3

PN480415

WILBUR D. MILLS, POOL NO. 2

TAINTER GATE PAINTING

ARKANSAS COUNTY, ARKANSAS SOLICITATION NO. W9127S20R0011

(AM001)

If the gate side seals experience any leakage after return to service, the Contractor and COR shall inspect the side seals for compliance with all specifications.

-- End of Section --

SECTION 05 05 24.10 Page 4

PN480415

WILBUR D. MILLS, POOL NO. 2

TAINTER GATE PAINTING

ARKANSAS COUNTY, ARKANSAS SOLICITATION NO. W9127S20R0011