Sunshine Coast Regional District Section Port Facility Reparation Page 1

Transcription

1 Sunshine Coast Regional District Section TIMBER Port Facility Reparation Page 1 PART 1 GENERAL 1.1 SCOPE.1 This section relates to the following:.1 Pickup of Owner supplied timber materials from the Owner s facility at 5920 Mason Road, Sechelt, BC and transport of materials to the project site;.2 Installation of Owner supplied timber materials to construct a replacement deck on the existing approach and wharf head at the project site, and;.3 Installation of Owner supplied timber materials to construct repairs to an existing timber float at the project site;.4 Supply and installation of all hardware and all materials not provided by the Owner necessary for the completion of the Work. 1.2 RELATED SECTIONS.1 Timber Piles Section REFERENCES.1 American Wood Preservers' Association (AWPA).1 AWPA M2, Standard for Inspection of Wood Products Treated with Preservatives..2 AWPA M4, Standard for the Care of Preservative Treated Wood Products..2 ASTM International.1 ASTM A153M-09, Standard Specification for Zinc Coating (Hot Dip) on Iron and Steel Hardware..2 ASTM A307-14, Standard Specification for Carbon Steel Bolts, Studs and Threaded Rod, 60,000 PSI Tensile Strength..3 CSA International.1 CSA B111-03, Wire Nails, Spikes and Staples..2 CSA O80 Series-12, Wood Preservation..3 CSA O86-09 Consolidated Engineering Design in Wood.4 CAN/CSA Z809-13, Sustainable Forest Management..5 CAN/CSA G164-03, Hot Dip Galvanizing of Irregularly Shaped Articles..4 Health Canada / Workplace Hazardous Materials Information System (WHMIS).1 Material Safety Data Sheets (MSDS)..5 National Lumber Grades Authority (NLGA) 1.4 PROTECTION.1 Standard Grading Rules for Canadian Lumber Deliver, store and handle materials in a manner that protects products from damage. Replace damaged or defective materials with new products conforming to the requirements of this section. 24 Sept 2017

2 Sunshine Coast Regional District Section TIMBER Port Facility Reparation Page 2 PART 2 PRODUCTS 2.1 TIMBER.1 All timber shall be suitable for the purpose intended and shall conform to the Standard Grading Rules for Canadian Lumber, (NLGA), of the Canadian Lumber Standards Administration Board, and shall be No. 1 Structural Grade Coast Douglas Fir unless otherwise specified..2 The Contractor shall supply to the Engineer documentation indicating the grade class and species of all timber delivered to the site..3 The Engineer shall be the sole judge as to the acceptability of timber incorporated into the work. Timber not accepted by the Engineer shall be removed from the site. 2.2 PRESERVATIVE TREATMENT OF TIMBER.1 All timber shall be pressure preservative treated in accordance with CSA-O80-M Wood Preservation, its applicable subsections and amendments. The use category to which creosote treated timber elements will be exposed is UC5A (Marine (salt water) applications). The use category to which timber preservative treated by water-borne ACZA will be exposed is UC For timber specified to be preservative treated by the water-borne ACZA process minimum net retention shall be 9.6 kg/m 3..3 For timber specified to be preservative treated by the Creosote process minimum net retention shall be kg/m 3..4 The Contractor shall provide certification that the specified treatment retention has been achieved..5 Preservative treatment of timber shall be undertaken in compliance with the latest revision of the Best Management Practices (BMP s) for the Use of Treated Wood in Aquatic Environments, as published by The Canadian Institute of Treated Wood and the Western Wood Preservers Institute. The Contractor shall provide assurance to the Engineer that preservative treatment has been undertaken in accordance with these BMP s. 2.3 HARDWARE.1 Small fastenings shall conform to Specification for Wire Nails, Spikes and Staples of the Canadian Standards Association Specification B-111. The most recent edition shall apply..2 Bolts shall conform to ASTM A Drift Pins, washers and other miscellaneous iron items shall conform to the specification for General Purpose Structural Quality Steels of the Canadian Standards Association CAN3- G40.21-M. Items manufactured or fabricated from scrap steel of unknown chemical composition or physical properties are not acceptable..4 All fasteners shall be of the full dimensions specified or shown on the contract drawings. Unless otherwise specified, all machine and lag bolts shall be provided with steel plate washers under head and nut. The steel plate washers shall be round and unless otherwise specified shall be selected for size from the table below. 24 Sept 2017

3 Sunshine Coast Regional District Section TIMBER Port Facility Reparation Page 3 Nom. Bolt Size Washer Thickness Washer Diameter (mm) (mm) (mm) All bolts, including drift pins, machine bolts, carriage bolts, lag bolts, nuts and washers, miscellaneous iron work, etc., shall be hot dip galvanized in accordance with the ASTM Specification A153. The most recent edition shall apply. PART 3 EXECUTION 3.1 MACHINING.1 Timber elements for which specific overall lengths can be established prior to installation shall be cut to length prior to preservative treatment. Field machining operations will only be permitted with the express written permission of the Engineer. 3.2 PRESERVATIVE FIELD TREATMENT OF TIMBER.1 Where field treatment of timber is permitted, field treatment shall be undertaken as soon as possible following the machining operation and shall comply with the requirements of CSA O Field treatment of treated timber shall consist of heavy applications the specified preservative applied until visible evidence of further penetration has ceased. 3.3 PILE CAPS.1 Secure pile caps on approach and wharf head to piles with 25mm diameter x 900 long galvanized drift pin, one per contact. 3.4 STRINGERS.1 Inspect stringers for crown. Install crown edge up..2 Secure stringers on approach and wharf head to pile caps with 19mm diameter x 500 mm long galvanized drift pins, one per contact..3 Secure stringers, flanges and cross-ties on float in position using 19 mm galvanized ASTM A307 bolts, equipped with nut and washer under head and nut, number per contact as per contract drawings. 3.5 DECKING.1 Decking for approach, wharf head and float has been supplied and shall be installed in continuous lengths. Intermediate joints will not be permitted..2 Install decking smooth face down and attached to stringers with nominal 152 mm Strong- Drive SDWS Timber Screws, double barrier corrosion protection, as provided by Simpson 24 Sept 2017

4 Sunshine Coast Regional District Section TIMBER Port Facility Reparation Page 4 Strong Tie or approve equal, two per contact. Pre-drill deck plank to prevent splitting. Maximum gap between adjacent deck boards at time of installation not to exceed 3 mm. 3.6 TIE RAILS AND RAISERS.1 Attach tie rails and raisers with nominal 20 mm diameter timber bolt (button head) equipped with washer and nut. Bolt pattern as indicated on contract drawings. 3.7 FASCIA.1 Attach fascia using 152 mm galvanized common nails, three nails installed across board face width at intervals not exceeding 1000 mm. 3.8 HANDRAILS.1 Attach handrail posts with nominal 13mm galvanized bolts equipped with nut and plate washer under head and nut. Counter bore at locations indicated on contract drawings. Install top and side rails using 76 mm galvanized spiral nails, two per contact. END OF SECTION 24 Sept 2017

5 Port Facility Reparations Page 1 PART 1 GENERAL 1.1 SCOPE.1 This section relates to the following:.1 Installation of Owner supplied timber piles at the locations and in the configuration indicated on the contract drawings..2 Supply and installation of hardware and all items not supplied by the Owner that are necessary for the completion of the Work. 1.2 RELATED SECTIONS.1 Timber Section MEASUREMENT PROCEDURES.1 Engineer will establish actual number and length of piles installed from driving records..2 Unit of Measurement for piles: number of piles successfully installed and accepted by the Engineer..3 Consider shoes, cap plates, straps and preservative treatment incidental to supply of piles. 1.4 REFERENCES.1 American Society for Testing and Materials International (ASTM).1 ASTM A123/A123M - 13, Standard Specification for Zinc (Hot Dip Galvanized) Coatings on Iron and Steel Products..2 ASTM A153/A153M - 09, Standard Specification for Zinc Coating (Hot Dip) on Iron and Steel Hardware..3 ASTM A307-14, Standard Specification for Carbon Steel Bolts, Studs, and Threaded Rod 60,000 PSI Tensile Strength..2 American Wood-Preservers' Association (AWPA).1 AWPA M4-15, Standard for the Care of Preservative-Treated Wood Products..2 AWPA M6-13, Brands Used on Preservative Treated Materials..3 Canadian Standards Association (CSA International) 1.5 SUBMITTALS.1 CSA B111-R2003, Wire Nails, Spikes and Staples..2 CAN3 O56-10, Round Wood Piles (Metric version)..3 CSA O80 Series-R2012, Wood Preservation..1 Equipment: submit prior to pile installation for review by Engineer, list and details of equipment for use in installation of piles. 1.6 WASTE MANAGEMENT AND DISPOSAL.1 Dispose of treated wood, end pieces, wood scraps and sawdust at sanitary landfill as approved by Engineer..2 Dispose of unused wood preservative material at official hazardous material collections site.

6 Port Facility Reparations Page 2 PART 2 PRODUCTS 2.1 MATERIALS.1 Pile branding: brand treated piles to indicate producer, in accordance with AWPA M6..2 Round wood piles: to CAN3 056, with minimum butt size of 36 cm and tip diameter related to length as specified by CAN3-O56..3 Order length of piles as indicated on Contract Drawings..4 Type of peeling: Clean Peeled..5 Pile species: Coast Douglas Fir..6 Piles one piece, splices not permitted..7 Engineer will be sole judge of quality and dimension of piles. 2.2 PRESERVATIVE TREATMENT.1 Preservative Treatment: to CSA O80 Series Use Category 5A..2 Conduct preservative treatment in compliance with latest revision of Best Management Practices (BMP s) for the Use of Treated Wood in Aquatic Environments, as published by The Canadian Institute of Treated Wood and the Western Wood Preservers Institute. Provide assurance that timber piling has been produced in accordance with BMP s. 2.3 ACCESSORIES.1 Wire nails, spikes, staples: to CSA B Bolts, nuts and washers: to ASTM A Strapping: Type 302 Stainless steel, nominal 19mm wide x 0.635mm thickness, 11.9kN average break strength. Provide with compatible stainless steel clips.4 Hot dip galvanize bolts, nuts and washers and unless otherwise specified, staples, cable clamps, pipe sleeves, spikes and nails: to ASTM A153/A153M..5 Other hardware to be galvanized to ASTM A123/A123M. PART 3 EXECUTION 3.1 EQUIPMENT.1 Prior to commencement of pile installation operation, submit to Engineer for review, details of equipment for installation of piles. For impact hammers provide manufacturer, type, rated energy per blow at normal working rate, mass of striking parts of hammer and mass of driving cap. For vibratory hammers provide all characteristics necessary to evaluate performance..2 Hammer: capable of developing a blow, at normal speed, with an energy of 21,000 to 44,000 joules per blow. When required penetration is not obtained by use of hammers complying with minimum requirements, provide larger hammer or take other measures, approved by Engineer..3 Leads: Designed to deliver impacts concentrically and in alignment with pile longitudinal axis without inducing bending moments in pile. Hold leads at top and bottom, with guys, stiff braces, or other approved means, to support pile during driving.

7 Port Facility Reparations Page 3.4 Followers: Use only with Engineers permission. When permitted provide of such size, shape, length and mass to permit driving pile in desired location to required depth and resistance. Provide followers with socket or hood fitted to pile head to minimize energy loss and prevent pile damage. 3.2 PROTECTION.1 Avoid dropping, bruising or breaking of wood fibres..2 Avoid breaking surfaces of treated piles..3 Do not damage surfaces of treated piles below cut-off elevation..4 Treat cuts, breaks or abrasions on surfaces of treated piles, bolt holes and field cuts in accordance with CSA O80 Series. 3.3 FIELD MEASURMENT.1 Maintain accurate records of driving for each pile, including: 3.4 PREPARATION.1 Type and make of hammer, stroke or related energy;.2 Other driving equipment including driving cap, cushion;.3 Pile size and length, location of pile in pile group, location or pile designation;.4 Date and time for start and finish for each pile driven and sequence of pile driving for piles in group;.5 Penetration for own weight and weight of hammer, number of blows per 300 mm of penetration from start of driving;.6 Observed stroke and blow rate of hammer;.7 Toe elevation upon termination of driving pile and final cut-off elevation;.8 Other pertinent information, such as interruption of continuous driving, observed pile damage;.1 Select piles in each bent or group for uniformity of size and straightness to facilitate placing of brace timbers..2 Submit details of proposed method of pile head and tip protection during driving to Engineer for review..3 Protect piles by steel straps installed at not more than 3 m intervals along length of pile, with at least two straps placed within 500 mm of butt of each pile..4 Steel strapping and clip joints to develop tensile strength of at least 22 kn and to approval of Engineer. 3.5 DRIVING.1 Use driving helmet to protect pile head. Ensure no loose inserts in helmet. Engineer is sole judge of acceptability of helmet..2 Reinforce pile heads if and as necessary;.3 Hold piles securely and accurately in position while driving;.4 Deliver hammer impacts concentrically and in direct alignment with the pile taking care to avoid forcing the pile laterally or bending the pile.

8 Port Facility Reparations Page 4.5 Drive piles at the angles and to the tip elevations specified unless solid bearing is reached at a lesser depth and approved by the Engineer in writing..6 Do not drive piles within 8m of masonry or concrete which has been in place less than 3 days..7 Ensure no contact between pile and structure takes place when driving inclined piles adjacent to existing structures..8 Do not drive inclined piles until vertical piles within a radius of 10 m have been fully driven..9 Re-drive piles which have settled or heaved during driving of adjacent piles..10 Restrike piles as directed by Engineer..11 Provide sufficient length above cut-off elevation so that the part damaged during driving is cut off. Cut off piles neatly and squarely at elevations indicated..12 Remove cut-off lengths from site on completion of work..13 Immediately treat exposed ends of cut off piles with heavy applications of copper naphthenate allowing sufficient interval between applications to permit total absorption. Continue until evidence of further penetration has ceased. When copper naphthenate is fully absorbed, seal surface with heavy application of approved bitumastic sealer..14 Install metal pile coverings, where indicated, on tops of piles immediately after treatment; bend edges down over sides of pile, neatly trim and fasten with 8 large headed roofing nails. 3.6 OBSTRUCTION.1 Where obstruction is encountered that results in sudden, unexpected change in penetration resistance and deviation from specified tolerances, the Contractor may be required to perform one or all of the following:.1 Removal of obstruction..2 Extraction, repositioning, and re-driving;.3 Addition of extra piles.2 If in the opinion of the Engineer, work associated with encountering obstructions could not have been reasonably anticipated by the Contractor, additional compensation for work done will be considered for payment. 3.7 TOLERANCES IN DRIVING.1 Center of butts: within 100 mm of location indicated..2 Manipulation of piles: not permitted..3 Remove and replace damaged or improperly located piles. 3.8 HARDWARE.1 Bolt holes in timber piles shall be bored to provide driving fit. Holes for drift pins shall be 2 mm undersize and of sufficient depth to prevent bottoming of pin in hole. Holes bored for lag screws/bolts as per CAN/CSA M..2 Unless otherwise specified, connection bolts, lag screws or drift bolts shall be placed through center of pile and shall provide minimum seven bolt diameter end or edge distance..3 Plate washers shall be used under the heads and nuts of all bolts against timber piles.

9 Port Facility Reparations Page 5.4 Strapping: Install at locations designated by contract drawings. Tension with approved tensioners. Secure with minimum two clips per strap. 3.9 CLEANING.1 On completion and verification of performance of installation, remove surplus materials, excess materials, rubbish, tools and equipment. END OF SECTION