Work is able to start on the construction of a new house once all of the consents have been attained from the local City Council. Depending on the location of the property the developer may have to carry out any number of tasks set out by the council in order to comply with their consent, for example in a flood prone area the developer may have to build up the land under the house buy as much as half a metre.
In most cases the builder will have to put some sort of solid foundation down to support the concrete floor, and 1 typical technique is called Rib Rafting, which involves hammering a large number of posts at least two metres into the ground.
Once the land under the house has been prepared and compacted, then the Builder can start by laying out the boxing for the concrete foundations and floor. To the untrained eye this can lock very complex given that it includes large blocks of polystyrene and a lot of Steel reinforcing laid and tied and trenches between the blocks of polystyrene. In actual fact all this is really just a collection of concrete beams with steel crossing the building, with the polystyrene providing a boxing so that when the concrete is
finally board all that is left is a nice slick polished floor, with drainage Plumbing installed where required.
Once the concrete floor has set and cured, generally after two to three days, then the builders can start work. This will generally involve erecting all of the timber frames and roof trusses that have been prefabricated offsite. The job of the Builder at this stage is to make sure that all the frames are erected true and as accurate as possible, and they also must do this work as safely as possible.
In a previous era the Builder will cut and assemble the frames on site, and then erect the frames using a hammer and two or three large boxes of 4 inch nails. She was obviously a time-consuming and exhausting job. The modern builder will receive all the framing and roof trusses delivered on site, and all I have to do is stand them up and then nail and together using the ever-present nail gun. This is it vastly faster then for the previous generation of builders.
Once the frame is up then the next important step is for the door Joinery and and window Joinery to be installed, and then for the roof to go on, and in most cases in New Zealanders is generally long run roofing iron laid over roofing battens and roofing paper. Once the roof has been installed satisfactorily then the outside cladding should be installed, imitate that point the house is able to be locked up.
From then on most of the work required by the Builder best to install the internal lining on the walls and ceilings and then to fit and finish the house and perhaps build the parts around the outside.