Farm Dam Construction and Dam Clean Outs Perth -Rural-Metro

Farm Dam Construction and Perth-Rural-Metro

Farm Dam Construction is not a case of digging a hole and waiting for it to fill with water. Many farm dams fail because they were not constructed or planned out correctly. Most farm dams are compacted earth structures built at depressions, gullies or hillsides. Farm dams should be planned and built with the same care you would apply to building a house.

Things to consider when planning a Farm Dam Construction

• Government regulations that apply to your Farm Dam Construction check with your local council for regulations.

• Size of your dam allowing for evaporation and Farm requirements.

• Where to build your Farm Dam: A Gully usually is a good place to site a dam because it reduces the amount of earthworks and the overall cost. However, not everyone has the advantage of a gully site on their property; many farm dams are built on hillsides.
Two important considerations, the catchment yield and the soil type at the site.

• Preparing your site: Before building starts, the area to be covered by the embankment, spillway and excavation should be stripped of all topsoil, roots and vegetation (including trees and stumps). Store the topsoil for use in the completion of the embankment and spillway.

• Building your dam :The successful completion of an earth dam relies heavily on achieving a well-compacted embankment.
Apart from soil compaction, other major construction considerations include: • the cut-off trench • exposed rock • spillways • clay cores • embankment batters • freeboard • settlement of the embankment • crest width • topsoil use.

• Maintaining your dam. To allow the storage to fulfil its function it is important to carry out regular maintenance. It also helps to observe the following.
Ensure topsoil cover of at least 150 mm.
Establish a grass cover on the embankment and spillway as soon as possible. A grass that mats, such as kikuyu, is preferable to a grass that tufts.
Do not let trees or shrubs grow on the embankment, spillway or spillway outlet slope. Roots might disturb the compacted soil and provide a seepage path for water, while trees or shrubs in the spillway area will restrict the flow of flood water.
It is worthwhile to choose an earthmoving contractor who has experience and a good work record. Not every contractor has the experience or the ability to build a dam.  At Dobson Excavations we have this experience. Contact Bruce on 0414755306 for a site visit and advise on your Farm Dam Construction.      #dobsonexcavations




Installing Soak Well Tanks for water or rain diversion Perth-Bunbury-Australind-Myalup-Preston Beach

Installing Soak Well Tanks for Water or Rain Diversion Perth-Bunbury-Australind-Myalup-Preston Beach

Soak well Tanks are an underground structure which allows rain water to drain away.

If rain water is not diverted away or runs off into a soak well tanks, than the rain water can cause your property and sometimes affect neighboring properties.

Which can cause Erosion of house pads, footings, Rising dam to walls, Floor and Foundation damage.

Soak well tanks work by collecting rainwater diverted by pipes attached to gutters, holes in the tanks allow seepage into the soil, they are installed underground.

They come in various sizes and traffic able lids are available if vehicles need to travel over them.

Concrete Soak well tanks will last longer and not collapse with weight over time.

At Dobson Excavations we supply concrete soak well tanks and install them.

Contact Bruce for a free quote today 0414755306

Mini Excavator for Tight Access or Limited Space for Hire

Mini Excavator for Tight Access or Limited Space for Hire

Is Tight Access a problem with your site? Or Limited Space where a machine can not turn or move around?

With our Mini Excavator its width is 98cm just under a meter, combined with our mini dump truck which is 790mm, we can assess just about anywhere, through garages, carports, side access.

We can access your yard with our Mini Excavator to install Leach drains, septic or soak well tanks, and Shed Pads, sand pad extensions, trenches, lawn removal, pool holes, rubbish removal etc.

If materials are required we supply sand and soil,than our Mini Excavator assist,  if materials are needed to be removed than our Mini Excavator and dump truck can move it out of your tight access or limited space.

Our Mini Excavator is a 1.7 Ton Hitachi ZX17U-S, our mini dump truck is a Wacker Nelson DT08.

Contact Bruce on 0414755306 for a site visit and a free quote.

Also visit to view all our machinery.


Soak Well Concrete Tank Supplied and Installed in all Area of Perth Metro/Rural

Soak Well Concrete Tank Supplied and Installed In all Areas of Perth Metro/Rural

Soak Well Concrete Tank supplied to your site and installed.

Soak Wells are used for drainage of water, where for example rain flows from gutters down pipes into soak wells, then the water seeps out the holes of the soak well concrete tank into the ground.

Concrete Soak Wells will last for many more years than plastic, as a soak well concrete tank can have a traffic-able lid install so you can drive over them.

Concrete Soak Wells come in different sizes starting from 900mm, 1200mm, 1500mm, and 1800mm as per the chart below


600 x 900   600 x 600                                                                                           Wall Thickness 60mm

900 x 1200       900 x 900         900 x 600                                                         Wall Thickness  60mm

1200 x  1500     1200 x 1200     1200 x 900      1200 x 600                             Wall Thickness 75mm

1500 x 1500     1500 x 1200       1500 x 900     1500 x 900    1500 x 600     Wall Thickness 75mm

1800 x 1800     1800 x 1500      1800 x 1200    1800 x 900   1800 x 600     Wall Thickness 90mm


CONTACT BRUCE ON 0414755306 OR email



Soak wells Supplied and Installed all Areas

Soak wells Supplied and Installed in all Areas

A soak wells divert and control water run off, from House and Shed roofs etc, water travels down drain pipes which run into the soak wells, soak wells have holes in the tanks which allow water to seep out into the ground.

Soak wells are made from a variety of materials and capacities, but usually concrete is the best option as they last a lot longer and a trafficable lid can be installed if you have area where a vehicle travels over it, as plastic can split and collapse.

Before you consider installing  soak wells in WA, you should familiarise yourself with your local shire council’s regulations. By law in Western Australia home owners have an obligation to confine any stormwater run-off within the boundaries of their property.

Rain water which is not effectively managed on your property can cause a range of issues. Apart from the obvious effects of erosion on your property and your neighbours, a build-up of water against your property can cause many issues including:

Erosion of house stumps and building subsidence
Subsidence of footings and concrete pads
Rising damp to walls and footings and flooring
Wood rot
And let’s not forget termites love a drink and you could be the key provider

Unless you effectively manage rainwater on your property, you could be faced with carrying out extensive repairs and renovations to your home, both inside and out, above and below. However, if you install  soak wells designed to accommodate the expected levels of rain water for your property, you are likely to avoid significant maintenance costs and avoid issues with your neighbours.

To work out what size soak wells you require, Simply calculate the area to be roofed or paved and use the above formula to find out the required amount of soak well volume. Eg. 60m2 of paved area. 60 x 0.0125 = 0.75 Required soak well size = 900 x 1200 Note: Always round up to the nearest volume.

For Supply and Installation of Soak wells contact Bruce at Dobson Excavations for a free quote on  . or email us at

Construction of Driveways Serpentine-Jarrahdale-Mundijong-Oakford

Construction of Driveways Serpentine-Jarrahdale-Mundijong

Before construction of your new Driveway begins.

  1. Make sure there are no underground services where construction of driveway is being constructed.
  2.  Check that your new driveway is in your boundary of you property.
  3.  Excavations of the area to remove topsoil/grass etc and level out driveway area.
  4.  Sand or Limestone can be used as a firm base depending on what material you are using.
  5.  Compaction of the driveway is required to compact the gravel material.

Constructions of Gravel DrivewaysDobson Excavations Limestone Dobson Excavations Gravel Materials - Red Gravel for DrivewayBlue Gravel for Construction of Driveways

Dobson Excavations handles all Driveway constructionsWe can lay form work for concreting your driveway, supply  materials and even supply the concreter to complete your construction of driveway.

If you have an existing Driveway that requires a tidy up or redressing, then contact Bruce 0414755306 for a free quote and he can assist with his advise on what materials are best.



Limited Access Excavations From Perth to Busselton

Limited Access Excavations From Perth To Busselton 

At Dobson Excavations we offer mini excavator and mini dump truck service for Limited Access/Tight Access and confined spaces.

We can access just about any site, as sites are becoming more difficult to access due to developers cutting down block sizes.

Also residence are sub diving their blocks making the sites harder to access for builders and trades.

Many sites are now very narrow to access at Dobson Excavations our mini dump truck and mini excavator can handle the limited access with ease.

With our mini Excavator Limited access includes:                                               .Removal of Canopy on Excavator to access through garages and carports.     .Gates larger than 1100mm as the machine is 980mm in width so we can have some clearance on each side, the excavator is 1.8 in height without the canopy.

Our mini Dump Truck Limited access includes:                                                    .Access through gates larger than 820mm as it is 790mm in width it is not as wide as the excavator, so this machine can access just about any Limited Access space.  Plus it does not have a height issue as it is 1313mm in height.

With both these machines combined, the excavator can dig your site either for trenches, pool excavations, lawn or sand removal etc while the dump truck remove the materials or brings in the material through your limited access.

Contact Bruce on 0414755306 for a free quote or site visit, or email Corinne at


Slasher Brush cutter Bobcat Hire for Fire Prevention Perth-Hamel-Lake Clifton-Harvey

Slasher Brush Cutter Bobcat Hire for Fire Prevention Perth-Hamel-Lake Clifton-Harvey

Fire Prevention is required over this summer season for prevent Bushfires.

At Dobson Excavations we have a Slasher/Brush cutter which is an attachment fitted to the bobcat, this Slasher/Brush Cutter can slash through and cut down shrubbery, small trees, bushes etc, it can also maintain large areas of grass. The Slasher/Brush Cutter can even trim trees, bushes, shrubbery that may need trimming near driveways, road ways, access tracks.

This is a job after we used the Slasher/Brush Cutter

This is the Bobcat below with the attachment.

Our Slasher /Brush Cutter can clear bushy blocks for house sites ready for House pad construction, clear paths for fire breaks, cut through tracks, it can be used for Parks and Recreational. Areas.

The Slasher/Brush Cutter is industrial grade,

Contact Bruce on 0414755306 for a free quote or a site visit.

Excavations for a new Pool Oakford-Byford-Darling Downs-Piara Waters

Excavations for a new Pool Oakford-Byford-Darling Downs-Piara Waters.

Before Excavating the hole for a pool installation 

Apply for a building permit for your pool installation anyone can apply for a building permit, the owner, pool builder or barrier installer. Applicants can choose to submit either a certified or uncertified application for a pool.

Prior to a building permit being granted by a permit authority (usually the relevant local government), a registered building surveyor is required to confirm that the proposed pool and its safety barrier comply with the applicable building standards by signing a ‘Certificate of Design Compliance’ (CDC). The applicable building standards include the: • structural adequacy of the pool or spa; • water recirculation system;
• energy efficiency for heating and pumping; • water efficiency (ie a pool blanket or cover that is designed to reduce water evaporation and is accredited under the Smart Approved Watermark Scheme www.smartwatermark. org); and • safety barrier. Anyone can apply for a building permit, the owner, pool builder or barrier installer. Applicants can choose to submit either a certified or uncertified application for a pool installation and its safety barrier.

A certified application (Building Commission form BA1) is submitted to the permit authority accompanied by a CDC. This requires an independent building surveyor to certify the plans and specifications and provide a CDC. The permit authority has 10 business days to decide on a certified application. An uncertified application (Building Commission form BA2) is submitted to the permit authority without a CDC. The permit authority must appoint an independent building surveyor to check the proposal and provide the CDC. The permit authority has 25 business days to decide on an uncertified l and its safety barrier.

As part of the process for obtaining a building permit, a registered building surveyor assesses the plans and specifications and certifies that the pool and its safety barrier will comply with the applicable building standards prior to issuing a CDC. Also at the completion of the work, the person named as the builder on the building permit must provide the permit authority with a ‘Notice of Completion’ (Building Commission form BA7). This notice must be accompanied by an inspection certificate that confirms the safety barrier complies with the Building Regulations 2012 (the Regulations). This inspection certificate is separate to the four yearly pool inspection carried out by the relevant local government

When you purchase a pool, you need to decide if you are going to organise your own safety barrier or you would like the pool builder to do this on your behalf. The responsibility for compliance of the safety barrier will depend on the person named as the builder on the building permit as outlined in the options above.

Once you have sorted all the building permits and what barriers are required, then contact Dobson Excavations talk with Bruce on 0414755306  we will excavate your pool hole for your pool installation and if a tight access  is a problem or require rock hammering is required …

Bobcat Hire for site cleaning Armadale-Bedfordale-Cardup

Bobcat Hire for site cleaning Armadale-Bedfordale-Cardup

Site cleaning for bobcat hire

Rubbish removal,                                                                                                   Lawn removal front and back yards,                                                                   Moving and disposing overburden for site preparation,                               Excess sand from new building site,                                                                Builders rubble needs removing,                                                                                Shed Sand Pad required,

As our Bobcats are on tracks they are much more efficient, quicker and can be used in wetter sites, as they do not bogged down like wheel bobcats. They glide over the ground and can leave sites a lot more compacted than wheeled ones.

Combined with our Truck and Dog hire we can also take the materials away, if tight access or limited access is a problem with can use our mini excavator and mini dump truck.

We have 2 different Bobcat Hire Machines available, our standard TR270 and our bigger Bobcat Hire for larger jobs our TR320.

Our TR270 is 1998mm in Height, 1676mm in width.                                           Our TR320 is 2043mm in Height, 1930mm in width.

Contact Bruce on 0414755306 for a free Bobcat Hire quote.…