470-1 Description.
Furnish and erect treated timber into various structures.
470-2 Materials.
Meet the following requirements: Timber ................................ ................................ .Section 952 Preservative ................................ ......................... Section 955 Use timber as specified in the Plans.
470-3 Timber Handling.
Handle treated timber with rope slings, without sudden dropping, breaking of outer fibers, bruising, or penetration of the surface with tools. Do not use cant dogs, hooks, or pike poles.
470-4 Cutting and Framing.
Before treatment, cut and frame all timbers which are shown by the Plans to be furnished in special lengths or framed to detailed dimensions. Limit the cutting of treated timber to minor fitting which might be necessary and that is authorized by the Engineer. For all places where the surface is broken, by cutting or otherwise, thoroughly coat with the preservatives and by the methods specified in AWPA M4.
470-5 Bolt Holes.
The Contractor may drill holes in the field. For timbers originally treated with pentachlorophenol, creosote, creosote solutions, or waterborne preservatives, field treat all cuts, abrasions, bolt holes, and recesses that occur after treatment with two liberal applications of a compatible preservative in accord ance with the requirements specified in AWPA Standard M4, Standard for the Care of Pressure -Treated Wood Products.
470-6 Pile Caps.
Ensure that pile caps have full even bearing on all piles in the bent, and secure them to each pile by a 3/4 inch diameter drift bolt extending at least 9 inches into the pile. Where so shown in the Plans, cover the tops and ends of pile caps with 10 ounce, minimum weight, copper sheet meeting the requirements of ASTM B370.
470-7 Floors.
Attach the planks to each joist or nai ling strip with at least two 8 inch nails for 3 inch planks, or two 10 inch nails for 4 inch planks. Use nails that are at least 1/4 inch in diameter. For treated timber floors where a bituminous wearing surface is to be applied, lay the planks with the best side up and with adjacent edges in contact. Grade the planks as to thickness before laying, and lay the planks so that no two adjacent planks vary in thickness more than 1/8 inch. Cut the floor to straight lines along the side of the roadway and walkway . FY 2023-24 Return to Table of Contents
470-8 Framing.
Cut and frame truss and bent timbers to a close fit in such manner that they will have even bearing over the entire contact surface of the joint. Do not perform blocking or shimming of any kind in making the joints. The Engineer will not accept open joints.
470-9 Holes for Bolts, Dowels, Rods, and Lag Screws.
Bore holes to the diameters shown in the following table: Table 470 -1 Hole use Hole diameter Drift Bolts and Dowels 1/16 inch less in diameter than the bolt or dowel to be used Machine Bolts same diameter as the bolt Rods 1/16 inch greater in diameter than the rod Lag Screws not larger than the body of the screw at the base of the thread
470-10 Stringers.
The Contractor may use butt joints for outside stringers, but shall frame interior stringers to bear over the full width of floor beam or cap at each end. Separate the ends at least 1/2 inch to allow circulation of air, and securely fasten the ends to the timber on which they rest.
470-11 Railings.
Construct railings of treated dressed lumber.
470-12 Hardware.
470-12.1 General: Use hardware, including bolts, drift pins, dowels, rods, nuts, washers,
spikes, nails and all similar incidental metal items, nec essary to complete the work in accordance with the details shown in the Plans. Use common wire nails as commercially manufactured. Use ogee washers of cast or malleable iron. The Contractor may use other hardware of steel, iron, or any similar material ord inarily used in the manufacture of such articles.
470-12.2 CCA, ACQ -D, and CA-C, Treated Timber Structures: Use the fasteners and
connectors as described in the following table: Table 470-2 Hardware Requirements for Treated Timber Environmental condition where structure will be located Fasteners Connectors Permanent wood foundations and/or where salt spray if prevalent 304 or 316 Stainless Steel 304 or 316 Stainless Steel Structures that will be exposed to standing water or rainwater 304 or 316 Stainless Steel 304 or 316 Stainless Steel Structures that will be situated indoors and remain dry in service 304 or 316 Stainless Steel Hot-dipped galvanized fasteners meeting ASTM A-153 requirements 304 or 316 Stainless Steel Hot-dipped galvanized connectors meeting the requirements of ASTM A-653 Class G185 sheet or better Do not use aluminum in direct contact with treated wood. FY 2023-24 Return to Table of Contents
470-12.3 Bolts: Use bolts of the sizes shown in the Plans with square heads and nuts and
with screw threads that make close fits in the nuts. Upon completion of the installation, check all nuts for tightness, and cut off protruding bolt ends so that not more than 1/4 inch extends beyond the nut.
470-12.4 Inspection: The Engineer will inspect the h ardware for quality of manufacture
and accuracy of size prior to use on wood structures.
470-13 Countersinking.
Perform countersinking wherever the heads of screws or bolts would otherwise interfere with the assembly of the work. Fill recesses formed by c ountersinking with hot asphalt.
470-14 Method of Measurement.
470-14.1 General: The quantity to be paid for will be the plan quantity, in feet board
measure, of such timber actually incorporated in and forming a part of the completed structure.
470-14.2 Method of Calculation: For calculating the quantity of timber, the width and
thickness will be taken as the actual sizes shown in the Plans or ordered by the Engineer. Where special sizing is required, the width and thickness to be used will be that of the smallest commercial size from which the special piece could be cut. Lengths to be used in the calculations will be the overall lengths of the pieces as shown in the Plans, except that, where the lengths actually incorporated in the structure are less than the lengths shown in the Plans, the lengths actually incorporated will be used in the calculations. Deductions will not be made for copes, scarfs, or crownings.
470-15 Basis of Payment.
Prices and payments will be full compensation for all the work specified in this Section, including all copper covering over pile heads, caps, etc., as shown in the Plans, all hardware except such plates, lag screws, and other metal parts as may be shown in the Plans to be paid for as structural steel and all paint materials and all excavation, painting, and incidentals necessary to complete the work. Payment will be made under: Item No. 470 - 1- Treated Structural Timber - per Thousand Board Measure. FY 2023-24 Return to Table of Contents SECTION 47 1 FIBER REINFORCED POLYMER FENDER SYSTEM S
471-1 Description.
Construct fiber reinforced polymer (FRP) fender systems using components in accordance with this Section and the Plans. Submit a design for the FRP fender system in accordance with 471-4.2.
471-2 Materials.
Meet the following requirements: Fiber reinforced polymer composite s (Piles, Wales, Spacer-blocks, Decking & Splice Plates ) ................................ .............. Section 973 Concrete used to fill hollow piles ................................ . Section 347 Use only SAE Type 316 stainless steel metallic fastening and connection hardware.
471-3 Product Acceptance.
Obtain fender system components from a producer that is currently on the list of Producers with Accepted Quality Control Program for Fiber Reinforced P olymer Composites. Producers seeking inclusion on the list shall meet the requirements of 105 -3. Submit to the Engineer the manufacturer’s certification in accordance with Section 6 that the fender system components meet the material requirements of Secti on 973.
471-4 Shop Drawings and Design Calculations.
471-4.1 Shop Drawings: Submit shop drawings in accordance with Section 5. Include
the following , as a minimum, in the shop drawings:
1.General notes .
2.Energy absorption capacity (EAC) of the fender system (in units of kip -ft).
3.Fender system deflection (in units of feet) .
4.Minimum pile tip elevation .
5.The name and address of the manufacturer for each component, including the physical address where the fabrication is performed .
6.Pile configuration and layout based on, and compatible with, the geometry shown in the Plans .
7.Pile and wale material properties including fill material used for hollow piles and required admixtures. If the material properties are defined in the Standard Specifications, a reference to the applicable Sections.
8.Pile and wale section properties used in the design (e.g., ultimate moment capacity, stiffness, etc.) .
9.Pile-to-wale and pile -to-pile connection details .
10.Sections, views, details and dimensions required to successfully complete the construction of the fender system .
11.Any supplier required limitations regarding pile installation techniques or other typical construction practice s permitted by Section 455 (e.g., full length pile driving versus jetting/driving combination) .
471-4.2 Design Calculations: Design fender piling, wales and connections in accordance
with the latest edition of the FDOT Structures Design Guidelines (SDG) and the FDOT Structures Detailing Manual based on the desired energy capacity rating. Design calculations FY 2023-24 Return to Table of Contents
Source: Florida Standard Specifications for Road and Bridge Construction, 2024 Edition. Pages 706–708 of 1,299.