Xi'an GX Mechano-Electronic Co., Ltd.
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Our helical pile is characterized by its high quality steel. In an era where many companies choose to source their raw materials from Asia, the Techno Metal Post team is committed to purchasing North American steel and manufacturing its piles. Our piles are manufactured using structural steel according to ASTM A500 grade C, CAN/CSA-G40.21-98 and CSA W47.1 standards. Their design allows for maximum use of soil capacity. They have been load tested according to ASTM-D1143 and ASTM-D3689 standards in several types of soils around the world.
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Driven piles are an alternative to traditional screwpiles,they provide different benefits to original piles as they can be used indifferent construction environments. For example, where there is limited site access or extremely hard ground, therefore a driven pile is the safe and most cost-effective choice because of its quick and easy installation.
Steel driven end-bearing piles are installed using hydraulic hammers with an accelerated drop weight, in conjunction with side mounted vibro hammers. Driven piles can range in size from 457mm to 610mm and are designed and measured to support each specific structure depending on its size and weight. FLI Structures driven pile solution offers higher productivity compared with traditional concrete raft foundations.
Driven piling is well known for the following advantages for construction issues -
Relatively small and lightweight equipment is required
Relatively small cross-section and high strength helps penetration in firm soil
Driven piles require minimal site preparation
Spoil free means minimal cost for disposal of site debris
Cost-effectiveness where many piles are required
High productivity compared to traditional concrete raft foundations
Suitability for a variety of ground conditions.
Set against these however there are a few recognised unfortunate disadvantages to driven piles, these include -
Noise – the impact of those hydraulic hammers is audible from a long distance
Vibration – often unacceptable for environmental or structural reasons
Cumbersome plant – for many constricted sites, driven piling plant is inappropriate
Expense and time-consuming deployment when only a few piles are required
Because of these setbacks to the driven piles, the traditional FLI Helical Screw Pile is still widely used for many purposes, these include -
Underpinning
Vibration-free piling
Low-displacement piling
Piling without wet trades and concrete curing
Restricted access piling (e.g. railways)
FLI Structures have been in steel works for over 60 years and they are the leaders in the design, manufacture and installation of driven pile and steel grillage foundations. They have many awards and certificates to prove their dedicationand experience in the industry.
One of the major challenges a helical pile foundation must face is resisting ground movements. When the ground moves, it tends to pull or push on the shaft of the pile. Techno Metal Post designed and developed this proprietary green-coloured sleeve that reduces the grip of ground movements on the pier.
The sleeve size is adapted to that of the pile and is installed around the pier when it is screwed into the soil. Once in place, the sleeve slides up and down the pile with natural ground movements. It allows the pile to remain perfectly stable during freezing, thawing or drought periods.
As with our helical piles, Techno Metal Post has its own plastics department for the manufacturing of our exclusive sleeves in Quebec, in a variety of sizes. This gives us complete control over the quality of the product and, consequently, that of your helical pile foundations.
In keeping with the company’s philosophy, which is to offer strong and durable products, Techno Metal Post has specially developed technologies using the principle of cathodic protection to ensure that even helical piles installed in corrosive soils are protected for the long term.
Hot-dip galvanizing provides long-term protection for foundation piles.
Techno Metal Post goes one step further by offering alternatives to galvanizing.
Installing a cathodic protection system ensures the integrity of the structure for the desired time period.
Techno Protection offers two products for the protection of helical pile foundations:
Ring AnodesTMare ring-shaped magnesium sacrificial anodes installed on the shaft of the pile. They provide a one-time cathodic protection for small structures.
Ring Anodes use the intrinsic electrochemical properties of metals. Since the magnesium anode is from material inferior to steel, it consumes itself, thereby releasing an electrical current that prevents the structure from corroding.
Spin AnodesTMare impressed current anodes that are screwed into the ground like piers. Therefore, they do not require excavation and are available in a variety of sizes depending on the current needed.
Spin Anodes are made from alloys superior to steel and diffuse an electrical current produced by an external rectifier, thereby ensuring continuous protection of the buried steel structure.
Techno Protection is a sister company of Techno Metal Post. It is specialized in corrosion prevention, investigation and control.