Technical & General Specifications

Transcription

1 Technical Information Technical & General Specifications Precast concrete boardwalk system

2 Technical Specification 1.0 GENERAL The following covers: A. The supply, performance and design criteria requirements for precast concrete components to be used as coastal promenades, boardwalks and decks; B. The technical recommendations and considerations for precast concrete components in respect to: 2.0 SUPPLY 2.1 Good Order handling and storage on site site preparation for installation subcontractor requirements liaison and coordination installation product integrity and integration with substructure footings product integrity and installation of other fixtures, furniture and fencing pre commissioning requirements site egress and removal of foreign materials The Contractor will supply, from a nominated source, in good order, superstructure components to be used for the construction of a PermaTrak precast concrete boardwalk with adjacent lounge lay by decks. 2.2 Components Product components will include piers, pier risers, beams, treads and high density polyurethane ball pins to meet the designed boardwalk specifications as detailed in Contract Documents. 2.3 Damage to Product Product damaged in transit and handling on site will be removed from site and replaced at no additional cost to the Owner. Product that has been installed and which is damaged will be removed from the facility (boardwalk) and replaced at no additional cost to the Owner. 2.4 On site Storage Product will be delivered to site as scheduled to allow for direct transport and installation into the facility without the need to unnecessarily store product on site. 2.5 Alternative Components PermaTrak precast concrete boardwalk components are patented and engineered proprietary products. No alternative components will be accepted. 2.6 Product Color and Finish PermaTrak Technical & General Specifications Page 2 of 6

3 The product components will be supplied with color and finish as nominated on the product Supply Schedule (see 3.6 Certification) 3.0 PERFORMANCE AND DESIGN CRITERIA 3.1 Scope PermaTrak is a precast concrete boardwalk and decking system of highly durable components that are fast and simple to install. PermaTrak consists of quality precast, modular concrete components. There are 5 key components to the system treads, beams, piers, ball pins and abutments for end supports. Treads are placed on the beams and form the running surface of the boardwalk. They are interlocked by a unique, reversible tongue and groove arrangement, which provides for consistent longitudinal spacing with lateral flexibility. Beams form the engineered structural support of the PermaTrak system. The beams span between piers which are set at ground level or are fixed onto a substructure. Beams are connected to the piers utilizing a high density, poly urethane ball pin connector which allows for the horizontal and vertical articulation of the boardwalk. The complete tread and beam assembly is held in position by the weight of the components. 3.2 Design standards This product has been designed to conform to the following design guidelines and standards: LRFD Guide Specifications for The Design of Pedestrian Bridges, 2 nd edition AASHTO LRFD Bridge Design Specifications, 1 st edition with 2010 interim revisions American Concrete Institute 2005 Building Code and Commentary 3.3 Loadings The components of this system have been designed for the following loadings: 1. Dead Load 2. Live Load a. Vehicular (choose one of the following) i. Small maintenance/access vehicle such as a John Deere Gator HPX 4x4 Diesel weighing 2873 pounds with a wheel base of 75.2 inches (direction of travel) and a 48 inch tire spacing per axle. ii. Small vehicle weighing 5,000 pounds, 2500 pounds per axle with a minimum 96 wheel base iii. AASHTO HL 5 vehicle weighing 10,000 pounds, 8,000 pound and 2000 pound axles with a 72 wheel base b. Pedestrian live load of 90 psf c. Equestrian live load of 1000 lbs distributed over a square of 4 inches by 4 inches 3.4 Alteration of components PermaTrak Technical & General Specifications Page 3 of 6

4 The design of the substructure will be in accord with Project Engineer requirements to support, integrate and fix the PermaTrak superstructure. No components will be altered by cutting, sawing or fastening without prior knowledge and approval of the Project Engineer. 3.5 Dimensions and Weights Component dimensions and weights are provided in the Product Schedule to assist the Contractor with on site movement, handling and installation of components. 3.6 Certification The Contractor will provide product samples of product color and finish prior to delivery of product to the site. Samples are to be in accordance with the Owner s samples held at the Architect s site office. The Contractor will provide Manufacturer Certification documents on delivery to site. 4.0 TECHNICAL RECOMMENDATIONS AND CONSIDERATIONS 4.1 On site Handling and Storage The Contractor will ensure that product components are handled on site with due care, and with suitable machinery and lifting equipment to avoid any product damage. Product damaged will be removed from site and replaced at cost to the Contractor where the Principal or Superintendents Representative nominates product as damaged. Product will be stored on site in the nominated Contractor s storage area. 4.2 Site Preparation Prior to Installation The Contractor will ensure access to the substructure is safe and that it allows for the use of lifting and cartage of product to be installed. All pavements, grassed areas and other resort facilities will be protected from inappropriate access and intrusions. Damage to Resort facilities will be made good at the cost to the Contractor. Other site preparation requirements for storage and handling of product will be at the direction of the Superintendent s Representative. 4.3 Subcontractor Requirements The Contractor will submit to the Owner the credentials of any nominated Subcontractor for approval. The contactor will be responsible for the on site performance of works completed by any Subcontractor. 4.4 Liaison and Coordination Requirements The Contractor and any nominated Subcontractor will liaise and coordinate their works to ensure project programs are achieved. Where disputes arise on any issue of demarcation related to product installation the determination of responsibility will be made by the Superintendent s Representative. 4.5 Installation Requirements and Considerations PermaTrak Technical & General Specifications Page 4 of 6

5 PermaTrak is an engineered precast product that requires correct installation to achieve design outcomes. The Contractor will provide adequate direction and supervision of staff to ensure components are installed in accordance with the product specifications. 4.6 Supervision Supervision will need to address: Accurate setting out, spacing and alignment of piers, beams and treads Ensuring the substructure is correctly constructed to enable precise installation and fixing of the PermaTrak superstructure Correct incorporation of tapered treads to achieve curvilinear alignments Tread components to be correctly aligned along edges Tongues and grooves to be firmly engaged to achieve correct connection. 4.7 Tools and Lifting Equipment Lightweight lifting machinery and equipment appropriate to site access and product weights will be required. Machinery exceeding the specified loading capacity of the superstructure must not be used to traverse the superstructure. Lifting equipment procedures and safety wear will be in accordance with local regulations. Generally, the tools required for positioning the components will be leverage bars (e.g. crowbars and spud bars). No power tools are necessary for installation. Where special alignment adjustments are required due to unforeseen variations on the substructure or architecture, measures will be taken to ensure specified cover to steel reinforcement and to ensure components are firmly installed. 4.6 Product Integrity and Integration with Substructure Footings It is the Contractor s responsibility to ensure that the substructure is installed in accordance with the Engineer s specifications, such that the superstructure can be correctly aligned and fixed. Any adjustments necessary to the substructure or superstructure to align both will need to be approved by the Superintendent s Representative. Any costs due to Contractor fault will be borne by the Contractor. 4.7 Product Integrity and Installation of Other Fixtures, Furniture and Fencing Where other fixtures, furniture or fencing is to be attached to boardwalk components, approval will be required. The Contractor will ensure that steel reinforcement will not be compromised through reduction in concrete cover, and that components are not dislodged from their fixed positions. 4.8 Pre commissioning Requirements Prior to the installation of fixtures, furniture and fencing, the Contractor will request a progress approval of installation completion of the PermaTrak components. Where components are deemed by the Superintendent s Representative to be misaligned, damaged or unacceptable through an unforeseen event prior to Practical Completion, the Contractor will remove such and replace at their cost. PermaTrak Technical & General Specifications Page 5 of 6

6 4.9 Site Egress and removal of Foreign Materials The Contractor and the nominated Subcontractor will remove site debris, packaging, pallets or other foreign materials from site during the course of works. No foreign materials will be stored out of nominated Contractor s Area. Excess or unused product will be returned to the supplier in good order. The Contractor can lodge a variation claim as determined by the Superintendent s Representative. 5. FINAL INSPECTION AND DEFECTS LIABILITY 5.1 Practical Completion The Contractor will apply to the Superintendent s Representative to conduct a final inspection on completion of works. Twenty four (24) hours notice is to be given. The Superintendent s Representative will provide a list of Outstanding Items for action of the Contractor prior to the issue of a Certificate of Completion. The Superintendent s Representative will have discretionary power to issue the Certificate of Completion with small items to be fixed by prescribed dates. 5.2 Defects Liability Period The Contractor will provide the Superintendents Representative copy of the Manufacturer s Certification documents on delivery to site. The Contractor will be responsible for installation defects associated with the PermaTrak components and/or any fixtures, fencing or furniture for a period of 12 calendar months from the date of issue of the Certificate of Completion. 6. PERMATRAK GENERAL GUIDELINES Additional reference materials are provided separately from the Technical Specification for Contractor and Subcontractor information and understanding of the PermaTrak system. This information is not provided as a definitive construction approach. Each site will have some variation on design, site access, engineering requirements for footings and environmental conditions. Technical Specifications and directions of the Superintendent s Representative take precedence over this information. PermaTrak Technical & General Specifications Page 6 of 6