D'Abaco Melbourne - Tips To Get The Job Done Right
How much MATERIAL do I need?
When you are measuring up your job, you must always work in metres to calculate;
Length, Width and/or Depth.
To calculate the surface area we multiply:
length met x width met = m2 (square metre).
This is how we would estimate the quantity of material we need for paving tiles, mesh for concrete, weed mat for under pebbles or instant and synthetic grass.
To calculate the volume required we multiply:
length met x width met x depth met = m3 (cubic metre).
This is how we would estimate the quantity of material we need for laying concrete, soil for lawns, mulch, pebbles or drainage scoria for drains.
This calculation is used for material that has depth when it is layed.
Hint! Always break unusual shaped areas into different sizes of squares and rectangles to calculate the material required.
What depth should you lay crushed rock or toppings?
For pathways a depth of 75mm after compacting would be suitable for most general pathway areas or a base prior to laying pavers.
For driveways a depth of 100mm after compacting would be suitable for light car traffic.
Depending on the ground conditions or volume of heavy traffic this should be increased up to 150mm - 200mm in depth for larger sites.
Taking care to compact well and choose a heavy grade crushed rock, which is available up to 40mm and larger rubble of 100mm if required.
What depth should lay compost and mulch on garden beds?
Compost can be layed 25-50mm over the top of garden beds, while tilling into the surface evenly it will improve soil and stimulate plant growth.
It is also suitable for plants, lawns, trees and vegetable gardens. For new flower beds our organic soil mix, which has 25% compost, will be a great benefit for establishing new plants and trees.
Mulch and pine bark can be layed 75-100mm over the top of garden beds this will help retain moisture in the soil, and reduce pesty weed growth. Always keep the mulch a few centimetres away from the base of trees and plants to prevent rotting.
A good idea is to mix compost and mulch together so it feeds and covers your garden beds providing a great way to encourage worm growth and allowing air and rain to penetrate the soil.
How to use decorative pebbles and stones on garden beds?
It is important to use a good quality weed mat under your pebbles and stones, this will allow water to pass through to the soil, as well as some of the nutrients. It also will reduce any weeds growing through the pebbles and help with long term maintenance.
The size of stone or pebble will determine the quantity required, for the same area of cover a 75-100mm stone will use twice the volume as a 20mm product.
Selecting plants is also important, as plants with leafy and strappy foliage tend to be hardier plant requiring fewer nutrients for plant growth. They will keep your pebbles and stones looking cleaner over time. Plants that shed flowers and leaves will stain the stones and pebbles if not removed.
How much sand do I need?
For laying bricks: one cubic metre of sand will lay approximately one thousand standard bricks. This may vary depending on wether the bricks are solid or have holes.
For laying concrete blocks: one cubic metre of sand will lay approximately five hundred standard 390x190x90 solid blocks. This will also vary depending on the width and wether they are solid or hollow.
Always remember there are four bricks required to cover the same area as standard 390x190 block.
Sand for screeding floors or rendering walls; Use one cubic metre of sand to cover approximately thirty square metres of area at a depth of 25mm.
Should I buy in bags or bulk?
Most bulk materials weigh approximately 1,000- 1,300kg per cubic metre, as most materials are sold in 20 kg bags that is the equilivant of 50 - 65 bags per cubic metre.
There is also 1,000 litres to the cubic metre, so bags that are 30 litres would be equilivant to approximately 33 bags per cubic metre.
Concrete pre mix comes in 20 kg bags and it would require 80 bags to make a cubic metre of concrete.
So before you purchase in bags! calculate your quantity in cubic metres and compare your bulk price to the bagged price.