A rule of thumb is twice the length of the piles being installed. Make sure the boom of the crane is 'luffed' correctly, directly over the top of the line of the piles to avoid bending the pile you are driving.
Combined sheet piling wall beam and pipe king piles are able to go deeper into dense soils than sheet piling sections of a contiguous wall — approximately 6.5 feet (2 meters) compared to 1.5 feet (0.5 meters).
The rule of thumb is to maintain a spacing of 8 to 10 feet (2.4 to 3 meters) between the piles. It also makes a difference whether the deck is attached to an existing structure or free-standing.
Here is how to assume the thickness of the pile cap: If diameter of pile < 550mm: thickness = 2 x diameter of pile. If diameter of pile > 550mm: thickness = 1/3[(8 x diameter of pile)-600]
Generally speaking, the execution speed of standard sheet piles lies anywhere between 6 pairs and 30 pairs a day. Execution of circular cells or diaphragm cells using AS 500 sheet piles is more complex (see link to our webpage below). The installation of an HZ-M combined wall system must follow a specifc procedure.
A rule of thumb is twice the length of the piles being installed. Make sure the boom of the crane is 'luffed' correctly, directly over the top of the line of the piles to avoid bending the pile you are driving. Use a ground release Pile Lifting Clamp to lift a pile into the air and clutch with another pile.
For a typical steel sheet pile wall installation, the total cost can range from $70 to $200 per linear foot, or more, depending on the project's size, location, and complexity. Small Projects: Residential or small-scale commercial projects could range from $10,000 to $50,000 for smaller walls (50-200 linear feet).
Piles should be spaced at maximum centres of 1.3m along the lines of the bearers and at maximum centres of 1.9m along the lines of the joists. Dig holes with a post hole borer or a spade to a minimum depth of 450mm plus an extra 100mm for concrete pad. Clean out holes of any loose material.
Pile Quantity Formula
The following equation is used to calculate the Pile Quantity. To calculate the pile quantity, multiply the radius squared by pi times the height, then multiply by the number of caps.
It's important to retain a minimum spacing of helical piles of at least three diameters; otherwise, the helical plate of one pile can contribute stress to the soil bearing a nearby pile, reducing its capacity for bearing the weight of the supported structure.
For friction piles, centre to centre spacing is 3D to 4D, where D is the diameter of pile. Hence, minimum spacing is 3D. ∴ Minimum centre to centre spacing of friction piles of diameter (D) is 3 D. For end bearing piles, centre to centre spacing is 2.5 D to 3.5 D, where D is the diameter of pile.
Strip Foundations: Strip foundations are typically used in low-rise construction and consist of a continuous strip of concrete that supports the walls of a building. They are typically used on firm ground where the soil has good bearing capacity.
Pile caps should be at least 500mm thick. However, the free edges can be at least 300mm thick. A pile cap should have a clear overhang of 150 mm, but anything above 100mm is acceptable. The leveling course of thick concrete under the pile cap should be at least 75 mm in thickness.
Use an adequate template
The utilization of an adequate steel template will facilitate the installation process and result in a superior end product. The purpose of the template is to both properly align the sheets during the setting process as well as to keep the sheets in alignment during the driving phase.
Sheet piling can be used to provide permanent foundations, permanent or temporary retaining walls and as extremely strong shuttering when a poured concrete foundation or retaining wall is required. Sheet piling can form the basis for an underground structure such as a basement or underground car park.
Sheet piles are thin piles, made of plates of concrete, timber or steel, driven into the ground for either separating members or for stopping seepage of water. They are not meant for carrying any vertical load. Therefore, sheet piles are also termed as non-load bearing piles.
This can be written mathematically as: e h W H H = Q ult s + s c where WH is the hammer (ram) weight; H is the hammer drop height; eh is the hammer efficiency; Qult is the ultimate pile capacity; s is the observed pile set; and sc is an empirical constant expressing the aforementioned energy losses and the energy ...
Spacing of piles shall provide for adequate distribution of the load on the pile group to the supporting soil. In no case shall the minimum center-to-center spacing of piles be less than 24 inches (610mm) nor less than the following for the specific types of piling indicated in this chapter.
For friction piles, the minimum spacing recommended is 3d where d is the diameter of the pile. For end bearing piles passing through relatively compressible strata, the spacing of piles shall not be less than 2.5d.
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They have the ability to be driven up to 50m deep in the ground, but you'd rarely need to drive them this deep for a residential or light commercial building. The minimum depth of piles tends to be around the 3-4m mark, but you should always leave this decision to the experts in foundation construction.
For example, the cost of a pile foundation can be estimated by multiplying the unit price of the pile material (such as concrete, steel, or timber) by the length and number of piles, and adding the unit price of the installation (such as drilling, driving, or grouting) by the number of piles.
Sheet Piling On reclamation, sand fill, sheet piling by crane and drop hammer, vibro hammer or diesel hammer. A rate of 20 - 25 No/day to 20 to 35 m deep. 1 no = 0.4 m wide on plan and 6 m long.
Are they heavy? ......... No, A typical 10-inch diameter piling weighs approximately 7-ponds per linear foot. This would mean a 20-foot piling would only weigh about 140-pounds. Our 12-inch diameter pilings weigh 10.5 lbs/ft and our 14-inch diameter pilings weigh 12 lbs/ft.