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Mega Anchor Technical Data

© Copyright Mega Building Industries 2016

TDP Control



Index

3 Introduction

4 Mega Selection Guide

5 Mega Anchor Fixings

6 Mega Anchor Product Details

7 Mega Anchor Technical Data

8 Installation Instructions

11 Mega Anchor Bracing

15 Mega Anchor Retaining Walls

16 Mega Anchor Removal



Mega Anchor Introduction Mega Anchor is a simple and effective foundation system.

As an alternative to traditional foundations the mega

anchor requires no holes or concrete.

The Mega Anchor is an all steel mini piling system using

both the mega anchor frame configuration and friction

piles to secure the foundation in the ground.

There is 3 main processes when using the Mega Anchor

system:-

Installation of the mega anchor frame using

32NB galvanised pipe.

Attaching the height adjustable riser anchor

risers are 32NB, 50NB galvanised pipe or SHS

Attaching the fixing bracket to the riser

At the final stage of the manufacturing process the Mega

Anchor and all components are hot dipped galvanised to

provide effective long life protection in all conditions.

Mega Anchor products and components are also available

in stainless steel for harsh tropical and marine

environments. When the initial Mega Anchor frame is installed the

galvanised pipe is cut to the desired height and is fully

adjustable in the anchor frame. Being adjustable makes it

easy to get the foundations perfectly level.

Once the anchor is installed and the riser is at the

required height the riser is then fixed to the anchor using

either a Class 4 rated bolt or a number of 14 gauge 20x22

Class 4 self drilling and tapping screws in accordance with

the design requirement.

Because of the Mega Anchors all steel construction they

are non combustible and will not rot, warp, shrink and

are impervious to termites.

Mega Anchors are designed to suite any type of

construction. Commercial, domestic, single and multi

story buildings.

The Mega Anchor is suitable for all types of ground:-

- CLASS 'A' - Little or no ground movement

- CLASS 'S' - Slightly reactive sites

- CLASS 'M' - Moderately reactive sites

- CLASS 'H' - Highly reactive sites

- CLASS 'E' - Extremely reactive sites

- CLASS 'P' - Problem sites

Because of the Mega Anchors installation process little if

any site preparation is required, making it ideal for steep

sloping sites.

This prevents against erosion and enables the structure to

be designed to run with the natural contour of the land. It

also allows for natural ventilation underneath assisting

with cooling in warmer climates.

The Mega Anchor is design to withstand the harshest

environments and weather conditions, because of the

Mega Anchors geometric configuration and flexible

construction it performs brilliantly in earthquakes

cyclones and floods.

Pile depths

Correct pile depths are crucial to ensure maximum

effectiveness of the Mega Anchor footing system. With

Piles depths ranging from 350mm in rock and can be up

to 6.5m if required, the average depth is 900mm to

1500mm in clay soils.

The depth of the piles can be indicatively calculated after

a soil test is conducted, this will determine the site

classification and type of ground allowing for the Mega

Anchor pile design.

The actual pile depth is determined by driving a test pile

on site prior to installation.

The piles are driven to practical refusal, practical refusal is

calculated by the number of blows with a given force

over a given distance. Using 45 Joules of force as a

minimum requirement to calculate practical refusal at a

rate of 10mm over 10 seconds



Mega Anchor Installation Before any Mega Anchor is installed it is required that a

test pile be driven into the ground on site to determine

the depths of the piles.

1. Into rock and natural ground

All piles are to be driven to a minimum of 350mm into

rock and 800mm into natural ground to achieve the

maximum 30KN capacity of the Mega Anchor and all

piles need to be driven to practical refusal.

2. Into fill and unstable ground

In fill and unstable ground, the piles will be driven

through the unstable ground and found at least 800mm

into natural ground and driven to practical refusal.

Mega Anchor Selection Guide

1

To determine what type of Mega Anchor you require

you will need to know the total weight of the

structure and elevation these are the two main

variables when selecting your anchors.

2

There are 3 types of building anchors to choose from

the standard, the heavy duty and the squat mega

anchor.

The standard Mega Anchor is commonly used for:-

-Decks

-Car ports

-Single story houses

-Solar ground mount systems

-Structures with an elevation less than 1m

The heavy duty Mega Anchor is commonly used

for:-

-Multi story buildings

- Elevated Structures

-Commercial buildings

-Long span flooring systems

-Retaining walls

-Suspended concrete floors

The squat Mega Anchor is used commonly for:-

-Multi story buildings

- Elevated Structures

-Commercial buildings

-Long span flooring systems

-Retaining walls

-Suspended concrete floors

-Structures that are close to the ground

- Double Mega Anchor construction

3

Depending on the elevation of the structure bracing

may be required.

Bracing is required when the structure is more than

600mm off the ground additional bracing may be

required in high wind areas earthquake zones and

flood areas

.

There are four main types of Mega Anchor bracing: -

1. Angle Bracing

2. Cross Bracing

3. Web bracing

4. Truss bracing

The type of bracing will vary depending on the

elevation, Mega Anchor spacing’s and desired

outcome.

4 Mega Anchor load capacities. Both the standard and

the heavy duty Mega Anchor have a load Capacity of

up to 30KN for both download and uplift on a single

anchor.

The uplift capacity varies depending on the length of

the piles.

The total load capacity can be increased by

increasing the number of anchors in a selected

location.

5 There is a wide range of Mega Anchor fixing

brackets with the most common being angle tops and

flat tops.

See page 6 for fixing brackets.

There are 4 main factors that will determine the

spacing and layout for your Mega Anchors:-

1. Ground classification

2. Wind classification

3. Total weight of structure

Bearer Material



Mega Anchor Fixings

1 Fixing Brackets

There are a number of different fixing brackets for

connecting bearers and structural beams to the

anchor.

Mega Anchor Brackets: -

- MA4# Standard Angle Top

The MA4# slides over the 32NB riser

providing a solid fixing point for a range

bearers.

- MA5# Standard U Top


a solid fixing for vertical 90x90 timber

posts and can also be used for supporting

a range of bearers.

- MA14# Construction Bracket


providing a solid fixing pint for retaining

wall sleepers and bearers.

- MA15# Heavy Duty Flat Top


providing a flat fixing pint for large

bearers and I beams.

- MA16# Heavy Duty Angle Top


providing a solid fixing point for a range

of bearers.

- MA17# SHS Flat Top

The MA17# slides into 75x75 SHS

providing a flat fixing point for bearers

and beams.

- MA18# SHS Top Hat

The MA18# slides into the frame of the

standard anchor providing an attachment

for a 75x75 SHS riser

- MA23# Corner Construction Bracket


Providing a solid fixing point for retaining

wall sleepers and bearers being able to

go around corners.

- MA6# Standard Brace Bracket


providing a fixing point for s 32NB

galvanised pipe Brace

.

- MA7# Heavy Duty Brace Bracket

The MA7 slides over the 50NB riser

providing a fixing point for s 32NB

galvanised pipe Brace

-MA27# Heavy Duty Angle Top149


providing a solid fixing point for larger

bearers between 150mm to 200mm.

2 Riser Material

There are 3 main types of riser material:-

-32NB Galvanised Pipe

-50NB Galvanised Pipe

-75x75 Galvanised SHS

The riser material slides into the anchor frame and is

fixed using either Class 4 rated bolts to AS3566 or a

number of 14 gauge 20x22 Class 4 self drilling and

tapping screws in accordance with the design

requirement.

3 Screws & Bolts

Class 4 rated bolt or a number of 14 gauge 20x22

Class 4 self drilling and tapping screws in

accordance with the design requirement.

4 Bracing

There are 2 types of brace brackets used in the Mega

Anchor bracing system. Depending on what type of

anchor and bracing requirement.

The brace brackets slide over the pipe and is fixed

into position with a number of 14 gauge 20x22 Class

4 self drilling and tapping screws in accordance

with the design requirement.

The brace itself will need to be fixed at each end

with a 10mm Class 4 rated bolt or a number of self

drilling and tapping screws to ensure that the tek

screws cannot sheer under pressure.

5 Piles After the Mega Anchor is installed using the 32NB

galvanised pipe the pile is the fixed to the frame of

the Mega Anchor to ensure the Mega Anchor piles

cannot move.

The piles can be fixed using either a Class 4 rated

bolt or at least 2 14 gauge 20x22 Class 4 self

drilling and tapping screws in accordance with the

design requirement.



The MA1# Heavy Duty Mega Anchor is designed to support

larger heavier structures and structures that are elevated.

Utilising 50NB CHS as the riser material, this material is a

heavier material than what is used in the standard anchor

providing more lateral strength.

The MA2# Standard Mega Anchor is designed to support

lighter structures and structures that are closer to the ground

such as decks and transportable buildings. Utilising 32NB

CHS as the riser this can be a more cost effective solution in

situations where the heavy duty mega anchor is not required.

The MA24# Squat Mega Anchor is heavy duty mega anchor

designed for structures that are meant to be low to the

ground. Utilising 50NB CHS as the riser material this

material is a heavier material than what is used in the

standard anchor providing more lateral strength.

The MA3# Brace Mega Anchor is designed for bracing

structures in situations where is not be possible to run a

brace between 2 Mega Anchors.

Mega Anchor Detail

MA1#

MA2#

MA24#

MA3#




1

This information has been collected on Mega

Anchors that have been installed to the design

requirement outlined in section one.

2 Uplift Capacity

Anchor Description SWL

MA1# Heavy Duty 5KN – 30KN

MA2# Standard 5KN – 30KN

MA3# Standard NA


3 Bearing Capacity

Anchor Description SWL


MA2# Standard 5KN – 30KN

MA3# Standard NA


4 Bracing Capacity

Brace

Configuration Description SWL

Angle Brace Heavy Duty 10KN

Cross Brace Standard 10KN

Truss Brace Standard 10KN

Web Brace Heavy Duty 10KN

5 Maximum Loads To achieve maximum loads both down loads and up

loads, the Mega Anchors will have to be installed

correctly.

It is possible to increase uplift capacity by increasing

the length of the piles in different conditions and

increasing the number of Mega Anchors.

It is also possible to increase the down load capacity

by either, using thicker pile and riser material and

increasing the number of Mega Anchors to spread

and share the loads.

When the Mega Anchor is installed at its maximum

possible depth the bearing capacity of that anchor is

then reliant on the fixings and physical construction

integrity.



Mega Anchor Installation

1 Marking Out

Tools Required

1. String Line

2. Marking Paint

3. Pegs

4. Plumb bob or level

Marking out where the anchors will go is one of the most important steps when installing

Mega Anchors because when the anchors are installed they are not easy to remove.

To determine the exact location of the anchors run a string line between 2 points measure out

where the anchors are to be placed marking the ground with marking paint then plumb down

from the line pinpointing the exact location for the anchors. Using a peg mark the centre

location of where the Mega Anchor is to be installed. When the peg is removed from the

ground it leaves a hole marking the exact location of the Mega Anchor.

2 Mega Anchor Installation

Tools Required

1. Mega Anchor Alignment tool

2. Mega Anchor Jack Hammer

Dolly

3. Electric Or Pneumatic Driver

4. Electric Or Pneumatic Drill

5. Hex Bit

6. 10mm Metal Drill Bit

7. Magnetic Sprit level

8. Pegs

9. String Line

10. Laser Level

The installation Is divided into 4 main processes

-1 Aligning the anchor

-2 Driving the piles

-3 Fixing the piles and riser

-4 Attaching the top

1 Aligning the Mega Anchor.

Slide the anchor over the end of the alignment tool then put the spike of the alignment tool

into the hole marked out in step 1 using the knocker drive the point of the alignment tool into

the ground until the 1st sleeve of the alignment sits on the top of the mega anchor this will

hold the anchor and the alignment tool in place. Using a small magnetic level, move the

alignment to get the anchor plumb then use the knocker to stabilise the anchor in position.

Note:

Do not drive the anchor too far in the ground as it can make it difficult to insert the tek

screws later.



2 Driving the piles

Insert the 3 pre cut piles into the Mega Anchor pile guides; slide the jack hammer in to one of

the piles.

Note:

Be sure to hold the alignment tool because the weight of the jack hammer can pull the Mega

Anchor out of alignment.

Drive the first 3 piles 1/3 of the way into the ground and check that the Mega Anchor is

plumb and adjust accordingly. When the 3 piles are driven half way into the ground check

that the mega anchor is plumb.

Note:

It is very important to have the anchor plumb by This point because after the piles are half

way into the ground there is little or no movement in the Mega Anchor.

Then remove the alignment tool and finish driving the piles into the ground until level with

the Mega Anchor pile guides or until the point of practical refusal.

Note:

All Mega Anchors must be installed to the design requirement.

3 Fixing the piles and riser.

When the piles have been installed finish the installation by drilling tek screws into the

guides. There are 4 pre drilled holes in each pile guide that mark the location for the tek

screws

Note:

In some cases it may not be possible to drill through the pr drilled holes, in this case you can

drill through the pile guide.



When all the Mega Anchors have been installed set the height of the 2 end Mega Anchors.

Running a string between the 2 end Mega Anchors will allow you to mark and cut the risers

for all of the intermediate Mega Anchors by measuring from the ground to the string line this

will provide the required height for each riser.

Note:

Cutting the riser material 20 – 30mm longer than required will make it easier to adjust to the

Mega Anchor to the correct height.

Slide the riser into the centre of the Mega Anchor, slid the top over the riser then adjust to the

required height then attach to the Mega Anchor frame using either tek screws or bolts to the

design requirement.

4 Attaching the top,

The top is then fixed to the riser using either tek screws or bolts to the design requirement.

Note:

The tops have pre drilled holes to make it easier to attach the top.

The Mega Anchor installation in now finished and ready to support the bearer of your choice.



Mega Anchor Bracing

1

The Mega Anchor bracing system is an easy and effective bracing system utilising the Mega

Anchor brace brackets and brace anchor to effectively bracing any structure.

There are two different sized brace brackets MA6# and MA7# the brace bracket size is

determined by the type of Mega Anchor being used. The brace anchor MA3# is a stand alone

brace anchor that provides bracing direct from the ground to the Mega Anchor riser.

MA3# MA6# MA7#

Bracing Configurations.

The brace brackets can be easily configured for angle, cross, web and truss bracing

configurations depending on your bracing requirements.

Angle Bracing. (2 bracket construction)

The angle brace is constructed by placing 1 brace bracket on each riser at the required

location to achieve an effective brace. Measuring between the 2 brackets will give you the

correct length for the brace.

Note:

Tightening the bracket will make it easier to measure.

After cutting the brace make sure there are no bures on the ends of the pipe as this can make

it difficult to insert into the brace bracket sleeve. Slide one end of the brace into the brace

bracket sleeve then slide the other brace bracket up or down so that the brace fits in.

Note:

if there is not enough movement in the brackets to insert the brace you can remove the sleeve

by removing the bolt that attaches the sleeve insert the other end of the brace and the re

attach.

Push down on the top brace bracket down to take up any slack in the brace then tighten bolts,

The brace is then fixed to the brace bracket using either tek screws or bolts to the design

requirement.



Angle Bracing. (1 Bracket and brace anchor construction)

The angle brace is constructed by placing 1 brace bracket on the riser at the required location

then installing the brace anchor in the correct location to achieve an effective brace.

For the brace to be effective the location of the brace Mega Anchor will have to be calculated

before it is installed. This can be calculated by sliding the brace bracket over the riser to its

required height then measuring from the ground to centre of the brace bracket then using this

measurement, measure horizontally from the base of the Mega Anchor in the required

direction for the brace. This will be the location for the brace Mega Anchor.

After the brace has been cut to length slide the brace into the brace bracket on the riser then

into the brace Mega Anchor. Install the brace anchor by driving the 3 piles into the ground.

The piles are then fixed to the brace Mega Anchor frame using either tek screws or bolts to

the design requirement.

Note:

When installing the brace anchor the middle pile must me installed first.

When the brace Mega Anchor has been installed tighten the bolts, then fix the brace to the

brace bracket and the brace bracket to the riser using either tek screws or bolts to the design

requirement.

Note:

When installing the brace Mega Anchor the riser may be pushed out of plumb so before

fixing the brace bracket check that the riser is plumb.



Cross Brace.

The cross brace is constructed with 6 brace brackets depending on what size riser is used you

will require 6 standard building brace brackets for a 32NB riser or 4 heavy duty brace

brackets and 2 standard brace brackets for a heavy duty riser.

The cross brace construction is much the same as the angle brace however before the angle

brace in inserted an additional 2 standard brace bracket are slipped onto the brace.

When the angle brace is constructed there are 2 additional braces that brace off the centre of

the angle brace. Mark the centre of the angle and loosely fix the 2 brace brackets in place.

Measure between each bracket to find out the length of each brace and cut the brace to the

required length.

Slide the braces into the brace brackets completing the cross brace.

When complete tighten all bolts and fix in place with tek screws or bolts to the design

requirement.

Note:

For elevated structures above 2m high double cross bracing may be required.



Truss & Web Bracing.

Truss and web bracing can be used in areas where angle and cross bracing may not be an

option. Truss and web bracing enable you to utilise the open spaces below your structure.

The truss brace utilises multiple brace brackets to achieve the truss and web configurations.



Mega Anchor Retaining Walls

4 The Mega Anchor retaining wall system is a quick and effective way to construct retaining

walls.

The Mega Anchor retaining wall system utilises the Mega Anchor construction brackets

MA14#, MA23# & the Mega Anchor Bracing System.

Retaining Wall Construction

1. The anchor positions are marked out and the anchors are installed at the required

locations (see “Mega Anchor Installation” page 9)

2. The risers are then cut to the required length. Then using a laser level or string line

are adjusted to the correct height and fixed to the anchor. (see “Mega Anchor

Installation” page 9)

3. After the riser has been fixed simply slide the first set of construction brackets over

the risers to the required height and tec screw in place.

4. The construction brackets provide a solid fixing point for timber and concrete

sleepers or steel beams.

Note:

Depending on the height of the retaining wall bracing may be required. Be sure to calculate

where and what direction the bracing is required (see “Mega Anchor Bracing” page 12)

because the brace brackets will need to be inserted during the construction of the retaining

wall.



Mega Anchor Removal

5 There are 3 ways of removing the Mega Anchor

Removal Method 1: Mega Anchor Removal Tool.

This method of removal utilises the Mega Anchor removal tool, this method is recommended

in cases where the Mega Anchor and piles need to be fully removed from the site.

The Process:

1. Remove the tek screws that fix the pile to the anchor.

2. Insert the end of the removal tool into the pipe.

3. Tighten the nut on the removal tool hook so the rubber expands griping the side of

the pipe.

4. adjust the leaver so that it is pulling on the same angle as the pipe.

5. Press down on the leaver to remove the pile.

6. Repeat this process for each individual pile.

7. When removing the 3rd pile leave the pile attached as this make it easier to remove

the last pile.

Removal Method 2: Cut Off

This method of removal is a quicker easier alternative where you simply cut off the Mega

Anchor piles below the Mega Anchor frame.

The Process:

1. Dig around the Mega Anchor to just below the anchor frame exposing the pile.

2. Cut each pile below the Mega Anchor frame.

Removal Method 3: Pull out

This method of removal may be suitable is some situations but not recommended. The pull

out method requires heavy machinery such as an excavator, back hoe or forklift this method

can be destructive to the Mega Anchor.

The Process

1. Connect a chain to the Mega Anchor frame.

2. Connect the other end of the chain to the machinery.

3. Apply pressure until the anchor pulls out of the ground.

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