Landscape Road Case Study
The Brief for this job was;
'Remove all trees, level, and build a deck with a lawn for a trampoline'
We removed all the trees and stumps leaving an area to excavate and level.
While excavating we came across a large ledge of volcanic rock. It was directly where we had proposed to build the deck and a retaining wall, separating the deck from the lawn above. We had to go back to the clients and ask how they wanted to proceed.
I suggested that, instead of the enormous cost of building a wall into or onto the rock, we move the small amount of rock needed to build the deck with jack hammers. Then, while still keeping its same size and shape, move the deck along slightly. This would leave us enough room to construct a small bank, instead of the wall, up to the lawn.
We did this on a 'Charge Out' basis. We used all the volcanic rock from below the deck to build the bank. By doing this, we kept any removal and tip charges down to zero. We then built the deck using our favourite timber and method: Kwila with 'Shadow Hidden Decking Fasteners'.
We used 150mm wide kiln-dried kwila decking timber that is imported using Certisource.
CertiSource says it "is a widely recognized timber legality verification system, offering 'verified legal' timber from any location in Indonesia." "A Chain-of-Custody system is implemented in all manufacturers/sawmills in the supply chain to ensure that CertiSource timber is not mixed with unverified, possibly illegal timber at any stage."
Simply said, this is a tracking system that assures that the timber has been sourced, removed from the forest, milled, transported and imported, legally. With the help of 'DNA', they can trace individual products back through the supply chain to a verified forest concession, enabling an itemized check on product legality.
We used a system called 'Shadow Hidden Deck Fasteners' to attach the Kwila to the framework. This is a system that allows you to build a deck faster than the traditional method, and as there are no visible screws or nails, you get a cleaner, smoother, splinter-free finish.
After the deck was built, still keeping the cost down, we used topsoil from the site and back-filled the bank built from rocks. We then built steps from the deck to the lawn, planted the bank, leveled and 'Hydro Seeded' the Lawn.
After the volcanic rock issue, savings made from using the materials from the site meant that, rather than having an inflated cost, we were able to leave an invoice cheaper than the original quote.