Appendix K
Sample Specifications to Furnish and to Install Wire Rope
K-1. Furnish Wire Rope
SECTION [__________]
FURNISH WIRE ROPE FOR GATE-OPERATING DEVICES
(Note to Designer: This sample specification is provided to aid designers develop a contract spec to purcha wire rope. It needs to be formatted and updated as necessary. It is bad on the assumption that the Government is purchasing wire rope for a gate-operating device, and that it will be either placed in storage, or installed by Government forces or by a parate contract. The following sample specification has been developed for installing Government furnished wire rope by a contractor. If a contractor is responsible to both supply and install then u UFGS 12290A. It is advid that the designer read Engineer Manual EM 1110-2-3200 before using the specifications.) PART 1 GENERAL
1.1 REFERENCES
The publications below form a part of this specification to the extent referenced. The publications are referenced in the text by the basic designation only.
U.S. GENERAL SERVICES ADMINISTRATION (GSA)
FS RR-W-410 (Rev E) Wire Rope and Strand
FS RR-S-550 (Rev D; AM 1) Sockets, Wire Rope
WIRE ROPE TECHNICAL BOARD (WRTB)
WRTB (1993) Wire Rope Urs Manual
ASTM INTERNATIONAL (ASTM)
ASTM A 148/148M (2003) Steel Castings, High Strength for Structural
教学材料Purpos
ASTM A 123/123M (2002) Zinc (Hot-Dip Galvanized) Coatings on Iron &
Steel Products
ASTM A 351/351M (2003) Standard Specifications for Castings, Austenitic,
Austenitic- Ferritic (Duplex) for Pressure Containing Parts
1.2 SUMMARY
The Contractor shall furnish and deliver wire rope to the [_____] Project. The [_____] Project is located on the [_____] River approximately [_____] miles _______ of the city of [_____]. The wire rope is for installation in the operating equipment for [spillway]
[tainter] [_____] gates. The wire rope shall be manufactured, prepared for delivery, and delivered in accordance with the requirements of this ction. Installation will be by [a parate contract.] [project forces.]
1.3 SUBMITTALS
秋日黄昏
Government approval is required for submittals with a “G” designation; submittals not having a “G” designation are for information only or as otherwi indicated. When ud, a designation following the “G” designation identifies the office that will review the submittal for the Government. The following shall be submitted in accordance with Section 01330 SUBMITTAL PROCEDURES:
SD-01 Preconstruction Submittals
Work Plan; G
Work plan shall include:
Schedule for manufacture of products
香辣口味虾Schedule for delivery
SD-02 Drawings
Fabrication drawings for end terminations; G
SD-03 Product Data
Lubrication; G
Brand/specifications for factory lubricant
Pre-Stretching; G
有关鸟的成语Pre-stretching procedure
Method of attaching end terminations; G
Wire Rope Manufacturer’s Qualifications; G
Wire rope manufacturer’s qualification statement
Test Reports; G折纸狗
Rope tension test report
Attaching and Proof Loading Terminations; G
Proof load of terminations test report and measured rope lengths
Wire Strength and Ductility; G
Wire strength and ductility test results
Pre-forming; G
results
test
Verification
pre-forming
of
Relief;
G
Stress
Stress relief verification test results
G
Coating;
Zinc
results
test
coating
Zinc
G
Terminations;
End
for casting end terminations
test
Materials
properties
Certificates
SD-07
Material;
G
Wire
certification
material
Wire
Tension Testing Device; G
Certification of rope tension testing device
1.4 MANUFACTURER’S QUALIFICATIONS
The wire rope shall be the standard product of a manufacturer regularly engaged in the manufacture of wire rope, and shall esntially duplicate products having been in satisfactory u for at least 3 years prior to bid opening.
1.5 SITE VISITS/INSPECTIONS
The Contractor shall be prepared to accommodate up to two reprentatives of the COR to witness the various manufacturing process for the wire rope. At a minimum, a site visit will be made to witness the tension test, and the wire rope will be inspected upon delivery.
PART 2 PRODUCTS
2.1 WIRE ROPE AND SOCKET
2.1.1 Quantity
The Contractor shall furnish [____ wire ropes with end terminations (sockets) at both ends. Each wire rope shall be of the length indicated on Drawing No. ____, and within the tolerance also indicate
d on that drawing.] [_____ feet of wire rope. The wire rope shall be wound on reels in lengths such that ______ ctions, each with a length of
______ feet will be available for u, as splicing will not be allowed.]
2.1.2 Type of Wire Rope
牙龈肿痛吃什么(Note to Designer: EM 1110-2-3200 provides information that will help the designer lect the strand configuration. In many Corps applications existing regular lay wire rope would best be replaced by lang lay wire rope. This is discusd in more detail in EM 1110-2-3200.Also, stainless steel wire rope tends to abrade itlf when wrapped on disk-layered drums. Some manufacturers are questioning the wisdom of making regular lay stainless steel wire rope with flattened strands, as the cold working tends to be excessive and weaken the rope. Stress relieving to alleviate the cold working can be difficult and inconsistent with stainless steels.)
The wire rope shall be of the following type:
a. Strand configuration: [6x19 Seale] [7x19 Seale] [6x26 Warrington Seale Swaged] [_________].
b. Lay: [right, regular] [left, regular] [right, lang] [left, lang]
c. Diameter: [_______] inch, with a tolerance of – 0 and plus 5 percent
d. Finish: [galvanized] [not galvanized]
e. Material: [extra improved plow steel] [302 stainless] [304 stainless] [_________]
五的英文怎么写f. Core type: Independent wire rope core
2.1.3 Pre-stretching
(Note to Designer: Pre-stretching is highly recommended for installations with multi-rope drums, becau initial stretch in the ropes tends to be uneven. Pre-stretching will likely result a more equal tension between the ropes. It is also recommended for other wire rope so that final length after u will be clor to length at the time of installation.)
The manufacturer shall pre-stretch the [wire rope.] [wire ropes before attaching their end terminations.] This shall be done by subjecting them to three cycles at 40 percent of its nominal strength. The 40 percent loads shall be held for 5 minutes with 5 percent loads for 5 minutes between cycles. The manufacturer may propo a method of dynamic pre-stretching.
2.1.4 Wire Strength and Ductility
The manufacturer shall perform testing in accordance with FS RR-W-410 to verify wire strength and ductility.
2.1.5 Pre-forming
The wire rope shall be pre-formed, and manufacturer shall perform testing in accordance with Federal Specification RR-W-410D to verify pre- forming.
典型发言2.1.6 Stress Relief
The wire rope shall be stress relieved, and the manufacturer shall perform testing in accordance with Federal Specification RR-W-410D to verify stress relief.
2.1.7 Weld Distribution
Wire joints in any strand shall not be clor than 18 inches in any strand.
2.1.8 Galvanizing
(Note to Designer. Wire rope weaved from galvanized wires will have much better resistance to corr
osion than un-galvanized wire rope weaved from bare carbon steel. It will also have better resistance to corrosion than wire rope weaved from drawn galvanized wire. However, it will also have a significantly lower strength. If full strength is required, then u wire rope weaved from plain carbon steel or from drawn galvanized wire depending on how important corrosion resistance is. If full strength is not required, but high corrosion resistance is required, u wire ropes weaved from galvanized wire and perform the zinc coat test to verify the zinc thickness. See RR-W-410 for information on the rate of zinc coating. Of cour stainless steel wire rope would not be galvanized, and this entire paragraph would be deleted.)
[The wire rope shall be weaved from drawn galvanized wire. That is, the wires shall be galvanized prior to their last drawing operation. The wire rope shall have the same accepted industry standards for nominal strength as it would, had it not been galvanized.] [The wire ropes shall be weaved from galvanized wire. Zinc shall be applied at a rate of _____ ounces per square foot of wire surface. The manufacturer shall perform testing in accordance with FS RR-W-410 to verify the zinc coating has been applied at the required rate.]
2.1.9Lubrication
(Note to Designer. If specifying stainless steel wire rope, which will rarely be ud, it may be best to specify that it not be lubricated. As explained in EM1110-2-3200, in some cas the prence of a heavy lubricant will increa corrosion on stainless steel wire ropes.)
[The manufacturer shall lubricate the wire ropes at the manufacturing facility. The lubricant shall be applied with equipment capable of forcing the lubricant between the rope wires, including the center strand.] [The wire rope shall not be lubricated.]
2.1.10 Pitch Length
Strand pitch length shall not be less than 4-1/2 times the nominal rope diameter.
2.1.11Core Strand Wires
The number of wires in the core strand shall be equal to or greater than the number of wires in the other strands. The wires shall be of the same material as the wires in the other strands, or of a material with a lower tensile strength.
2.1.12 End Terminations
(Note to Designer: EM 1110-2-3200 discuss materials and coatings, and attachment methods for sockets. If for multi-rope drums it is advantageous to have the sockets attached at the wire rope manufacturer’s facility. For very long wire ropes in other applications this may be impractical. However, even if the sockets are to be attached in the field, it may still be advantageous to have the sockets supplied by the contractor supplying the wire rope. Note that the wire rope industry usually recommends replacing sockets when replacing wire rope.)
The wire rope end terminations (sockets) shall be fabricated as indicated on Drawing No. _________. They shall be cast from [steel conforming to ASTM A 148, Grade 105-85] [stainless steel conforming to ASTM A 351 CF8M] [_______________].
2.1.13 Tension Testing
A tension test shall be performed to verify the wire rope meets the accepted industry standards for nominal strength. Two rope samples shall be tested to failure to be sure the expected performance level has been met. The test shall be performed using suitable equipment and by qualified personnel, both furnished by the Contractor. The rope samples shall cut to no less than 3 feet of length. The test will not be considered valid if the failure occurs less than 2 inches from either socket
or holding mechanism. Relative speed between the machine heads shall not exceed 1 inch per minute.
2.1.14 Attaching and Proof Loading Terminations
(Note to Designer: EM 1110-2-3200 suggests that pre-stretching the wire rope and proof loading the terminations might be accomplished simultaneously. However, for multi-rope drums the wire rope would need to be pre-stretched first to be sure they are clor to their final correct length before attaching the terminations. If the sockets must be attached in the field delete this paragraph.)
