Structural contractors for apartment buildings Sydney
Residential flat buildings of three to eight storeys over basement are the core of the work. Footings, basement, transfer level, repeated suspended decks, blade walls and lift cores, delivered as one formwork, reinforcement and placement package.
How the structure is built and priced
The sequence
Pad footings and piles are set out off the survey, formed, reinforced and poured against the inspected steel. The basement slab goes down as planned large-area pours. Retaining and basement walls are formed and poured in lifts the form can take. Then the cycle starts: deck propped, steel tied, inspection called, pour booked, strip on cylinder results, back-prop, and the next level up on the head contractor's date.
Where the program is won
An apartment building is repetition. The propping, the bearer layout and the reinforcement schedule for one typical floor are re-used on every floor above it, so the cycle time falls as the crew settles. When the formwork, the steel and the pour are self-performed, the handover between them is inside one company and the cycle is not waiting on a subcontractor who is on another site.
What changes the price
Storey height, deck area per pour, the finish class on the soffits, whether the slabs are conventional or post-tensioned, and how much the layout repeats. A transfer slab over a commercial ground floor is measured as its own element because it carries more propping and heavier steel. Basement levels in rock or clay change the footing design and the retaining walls, not the decks above them.
What the head contractor receives
One itemised quotation with the basis shown against each element, one program line for the structure, one inspection per element, and one payment claim a month with measured quantities, the subcontractor's statement and certificates of currency attached. The 86-apartment building in Blacktown is running on exactly that arrangement.
The trades on this structure
Questions builders ask
How many storeys can you build as one package?
The typical range is three to eight storeys over one or two basement levels. Taller structures are priced on the drawings; send the set and the quotation shows what the crew and the cycle look like.
Do you form and pour the basement as well as the tower?
Yes. Footings, basement slab, retaining walls and the suspended decks are one continuous sequence with one set-out and one supervisor.
Can you price from a tender schedule?
Yes. Where the builder issues a schedule of rates we price against its items and note any measurement basis that differs from ours.
Price the structure.
Send the for-construction set and you have an itemised quotation for formwork, steel and concrete within five working days, rates held for thirty.