China Rag Bolt Overview Manufacturer and Supplier

Rag Bolt Overview

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Starfin Australia stocks and distributes a range of screw pile and bored hole pole foundations systems.
The Starfin Patented designed has been engineered specifically for laterally loaded,non critical structures such as lighting columns, traffic lights and power transmission poles.
The traditional method of boring holes and using steel cages can associate with delays due to weather, curing of concrete and not to mention the elimination of concrete and soil spoils.
The Star Fin System can be installed and ready for use within minutes. Civil contractors will find not only is the system able to streamline their building methods, but greatly reduce overall costs.

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Rag Bolt Cage Equivalents
The Screw-in Star Fin system has significant advantages over bored concrete and cage installations.
Some of these advantages are listed here however there are some geotechnical situations where the Star Fin is a less favourable option.
For these situations we offer an alternative pre-manufactured galvanised cage for a concrete bored solution.
These cages are designed with the equivalent loads to match the Star Fin series.

STARFINSERIES	PCDmm	MASSkg	CAGELENGTH“L”mm	MIN PILE/HOLE DIA“D”mm	NO. OF BAR	APPROX. CAGE DIA“CD”mm	CONCRETE COVER“CC”mm	DIA. OF BAR/THREAD SIZE“B”mm	ULSBASEBMKNm	ULSSHEARKN	MIN DEPTH OF PILE“PD”mm
RB1	210	11.7	1200	400	3	250	75	20	12	3.5	1050
RB2B	350	19.5	1500	500	4	390	55	20	17	4	1350
RB3B	350	31.4	1800	500	4	394	53	24	32	6	1650
RB4A	350	51.8	1800	500	4	400	50	30	39	7	1650
RB5A	500	89.9	2400	750	4	556	97	36	70	10	2250

The Pile Dia Min specified takes into account a minimum concrete cover of 50mm for non aggressive exposure conditions as well as the pile design loads. Other geotechnical, design and installation issues can affect and increase the required cover.
Concrete placement should be a minimum of 32 Mpa. During placement the cage should either be shaken manually or limited vibrator use to ensure concrete flow around cage components. Excessive vibration may cause segregation of
aggregate.
Design loads are based on a Cu=50 for Cohesive soil. Each locations needs to be verified for suitability by a geotechnical engineer.
For a sand environment a Starfin product is a better solution however if a bored pile cage design is essential a Medium Dense Sand foundation should be the minimum for consideration with an appropriate down grading of the ULS loads.
The Soil Structure guide table on this drawing is not to replace the design requirements of a geotechnical report or appropriately qualified engineer.
For multi pole applications field DCP test equipment is relatively low cost and simple to use as a method of verifying soil types combined with a site specific geotech report.
The loads for each of these pile designs have been taken from the SFL/Piletech Starfin loadings as equivalents.