Port Everglades, South Jetty Rehabilitation 2020, Broward County, Florida

Description of the Project Project Work consists of repairs to restore the Port Everglades South Jetty. Repairs will require substantial moving and manipulation of both new and existing stones to obtain the required interlocking within the tolerances provided. The originally constructed South Jetty is approximately 1,050 feet in length with a variable height between approximately +7.25 and +10.25 ft above Mean Lower Low Water (MLLW) as shown in the drawings. The crest width is 12 feet and the north and south slopes of the structure slope at 1V:2H as shown on the drawings. The contractor may utilize land-based methods or water-based methods to complete the work. Potential Challenges: Environmental Conditions: The Port Everglades South Jetty is located in a dynamic marine environment. The Contractor shall be responsible for obtaining information concerning the marine work environment including rain, fog, existing depths, shoaling, scouring, wind, wave, current, and tide conditions that could influence safety and construction operations prior to submitting a proposal or bid. Floating plant and equipment shall have all applicable inspections and certifications as required by Federal, State and local laws and regulations. See also EM 385-1-1, Sections 16, 18, 19, and 20. The self-elevating platform (SEP) shall have a minimum of four spud legs and a stable platform. The spud legs and platform shall be able to support the intended load necessary to complete the work. The SEP shall contain no forms of hydrocarbon based products in the jacking process. The platform shall operate in water depths as little as 3 feet up to the depths shown on the drawings. The SEP shall have be sized to handle a minimum wave crest height of 18 inches. Stone Requirement: Armor Stone A Stone shall be well graded from 8,000 pounds to 16,000 pounds with fifty percent (50%) of the stone greater than 12,000 pounds. Armor Stone B Stone shall be well graded and from 20,000 pounds to 28,000 pounds with fifty percent (50%) of the stone greater than 24,000 pounds. Unit Weight 165 pounds per cubic foot. Size and Shape Stone delivered under this requirement shall be blocky in shape with sharp angular edges with its greatest dimension not greater than three times its least dimension (3:1 ratio). The term blocky shall be understood to mean cuboidal (roughly cubical in shape). The term angular shall be understood to mean that the blocky stone shall have sharp, clean, angular to sub-angular edges at the intersections of relatively flat faces. All other stone shapes, such as wedges and/or pyramids, or stones having a triangular and/or pyramidal cross-section, will be rejected. All boulders and parts of boulders will be rejected, with a boulder being defined as any rounded stone not having sharp, clean, angular to sub-angular edges. Placement of Armor Stone a. Armor Stone shall be placed within the limits and elevations as indicated on the contract drawings, including allowance for tolerances, to provide for required thickness of armor stone. b. Armor Stone shall be placed individually by equipment suitable for lifting, manipulating in all directions (e.g. grapple), and placing stone of the size specified to the lines and grades as shown on the contract drawings, including allowance for tolerances. The equipment used in placing the Armor Stone shall also have the ability to place the armor stone over its final position before release and if necessary pick up and reposition the stone. Dragline buckets and skips shall not be used in placement. Moving stone by drifting or manipulating down the slope will not be permitted. Stones shall be brought to rest before releasing and shall not be dropped. c. Armor Stone shall be selected with care as to size and shape and key-in, meaning that the Armor Stone selected are able to be set in contact with all adjacent Armor Stone so that the void space between adjacent stones are as small as the character of the armor stone will permit. Void space shall also be kept to a minimum. Chinking of void space using chinking stone or other material is not permitted. New Armor Stone (reusable existing armor stone are excluded) shall be generally rectangular in cross section, the least dimension of any stone not being less than one-third its greatest dimension. d. Armor Stone shall be individually keyed and fitted in the structure such that each stone is in contact with all adjacent Armor Stone. Repair areas shall blend smoothly with adjacent non-repair areas of the jetty. Non-repair areas shall be adjusted up to two armor stone diameters away from repairs in order to provide a smooth transition between repair and non-repair areas. e. Continuous joints, where the vertical joints are not staggered and is continuous from the lower stone layers to the upper stone layers, are not allowed. f. In general, the long axis of each stone shall be placed perpendicular to the axis of the structure and slope downward toward the center of the structure. The Contractor shall begin placement at the bottom of the slope. g. Chinking of void space using smaller stones or other material is not permitted. h. New and reset existing Armor Stone shall be placed on a prepared stable surface using equipment suitable for handling the sizes of armor stone indicated without damage to either new or existing Armor Stone. i. Avoid creating flat final surfaces by using smaller stones, as the smaller stones will eventually be moved out of the structure creating degradation and movement of the larger stones. j. Avoid placing the largest face of the outermost stones parallel to the design lines and grades of the structure. k. The Contractor shall make an effort to interlock armor stone placement with the existing construction that is not a part of the repair work of this contract. l. The Contractor shall anticipate that substantial re-handling of individual Armor Stone after initial placement will be required to achieve the requirements of subparagraph titled "Placement of Armor Stone". m. The finished work shall be a well-distributed mass, free of pockets of either smaller or larger stones, having a minimum of voids, and with a maximum of interlocking stones. The mass of stone shall follow the lines and grades as shown on the contract drawings.

Division 31 -	Earthwork, Erosion and Sedimentation Controls.
Division 33 -	Utilities, Storm Drainage Utilities, Ponds and Reservoirs.
Division 35 -	Waterway and Marine Construction, Shoreline Protection, Waterway Construction and Equipment.