The Superstructure Package
FormFlo · ReoFlo · CreteFlo · VertiFlo
Four Flo take-off engines for the structure trade, built under the Gridstone mark and working off one read of your drawings. Formwork, reinforcement, concrete and structural walls — measured from the engineer’s documentation, issued as packages your fabricator and your fixers can actually build from.
The Package
Superstructure is a sequence before it is a set of trades. Every concrete element on your job gets formed, reinforced and placed — in that order, every time. The package is built the same way.
Contact area, system and sets. The formwork sets the shape and the cycle.
Every bar marked, shaped, scheduled and placed on a marking plan.
Net volume, grade off the schedule, pour by pour.
Walls, cores and blades — four families, run through the same chain.
Because the trades are not independent. The places they meet are exactly where a take-off quietly goes wrong, so we wire those hand-offs rather than leave them to four separate measurers.
Cover is measured from the form face. The formwork sets the datum that the entire cover layer depends on — so a form position settled in one engine and never fed to the other is a silent error in the steel.
Cover has to survive the pour. Chairs and spacers, congestion, vibrator access: reinforcement that is correct on paper and unplaceable in the pour is not correct.
Wet concrete pressure is an output of the concrete and an input to the formwork. Pour rate and lift height change what the form has to hold.
Stripping strength closes the loop. When the concrete is strong enough to strip is what decides how many sets of formwork you need standing at once.
The Engines
Every engine ships, trials and prices as a standalone take-off. Run the package and the drawings are read once and feed all four — which is the whole point.
Formwork take-off
Contact area, system selection and the set count that actually governs your hire bill — plus props, back-props and the strip sequence.
Reinforcement take-off
Every bar marked, scheduled, shaped and placed on a marking plan — issued in your fabricator’s own call-off format.
Concrete take-off
Net volume with the voids actually deducted, the right grade off the schedule, and the pour sequence to go with it.
Structural walls take-off
Four wall families in one engine — permanent-form, masonry, precast and in-situ — plus shear, core and blade walls.
What You Get
A summary is a number for an estimator. It does not tell a fabricator what to bend or a fixer which bar goes where. Every Gridstone package is issued as documents the site can work off.
Mark, product code, shape code, number off, cut length, the shape drawn with dimensions over, and mass. Grouped by element, one page per lot or unit.
Every mark stamped at its location on the plan, keyed to the schedule. The marks on the plan and the marks on the schedule always agree.
Shape codes with A, B, C and D leg dimensions — the cut-and-bend shop sheet, issued in your fabricator’s own call-off format where you have one.
Summary, mix schedule, pour schedule, pour plan, concrete BOQ, finishing and curing, test plan and embodied carbon.
Contact area by face with finish class, system comparison, sets required, crane lifts and the strip and back-prop sequence.
Chairs, spacers, pods, tie wire, membrane, sand blinding, props, ties — each as a line with a quantity and a supply-by, never as prose.
How It Works
Most take-off errors are not arithmetic. They happen upstream, when something on the drawings was never read, or was read and quietly assumed.
The structural set at its current revision. PDF is fine. We confirm the scope we can measure and the price before anything starts.
Every sheet is registered and every sheet is read. The take-off does not start until that register is complete — a drawing nobody opened is the most expensive sheet on the job.
The same read feeds formwork, reinforcement, concrete and walls. One element catalogue, one set of constants, one house style across all four.
Where the drawings are silent or contradict each other, you get a written query naming the sheet and the exact missing datum. We do not invent a value to make a total look finished.
The job is released while a query is open. Only the marks that genuinely depend on the answer are held — so your fabricator can start on the rest.
The package names the drawings and revisions it was measured from, so when a revision lands you know precisely what has to be re-checked.
Where We Stand
These are take-off and quantity engines. They read the engineer’s output; they never re-derive it. We do not size members, we do not check capacity, and we do not certify. Where something we measure looks inconsistent with the documentation, you get a flag and a question — never a silent correction and never an assertion dressed up as authority.
Every line carries its basis. Measured lines name the drawing they came off. Provisional lines say so and name the datum that is missing.
Drawings win. The job’s documentation is the first authority, then the Standard, then a question to you. In that order, every time.
Nothing is left behind. The schedule tables are exhausted before any allowance is raised — an allowance is a last resort, not a shortcut.
One owner per number. Steel, concrete, formwork and walls each own their own quantities, so nothing is counted twice across the package.
Pricing
No seats, no annual licence, no minimum. You pay for the take-off you asked for, on the unit the trade is actually bought in.
| Engine | Priced on | Typical use |
|---|---|---|
| ReoFlo | Per tonne of steel scheduled | Fabricators, reinforcement contractors, builders scheduling their own steel |
| CreteFlo | Per square metre of slab area | Concreters and builders pricing supply, placement and ancillaries |
| FormFlo | Per square metre of formwork contact area | Formwork subcontractors pricing area and set counts |
| VertiFlo | Per square metre of wall face | Wall and core packages on Class 2 and above |
| The Superstructure Package | Bundled across all four | One read of the drawings feeding the whole structure trade |
Rates are quoted per job before we start, off the drawings you send. Ask us for a number on a live set and you will have one.
Who We Are
The rules inside these engines are not generic estimating logic. They are the calls a detailer makes reading a real set: which plan governs, what a dashed line means, when a set-down cranks and when it does not, which revision letter wins.
Gridstone is built for Class 2 and multi-storey construction, and it is the trade mark every Flo engine is built under. The Superstructure Package is the first to market. More about Gridstone →
Class 1 through 10 and civil. Where a rule is state-specific, the engine resolves it from the site address rather than applying one state’s law everywhere.
Structural set, current revision, PDF is fine. We will come back with the scope we can measure, anything we need answered, and a price before we start.