Casos prácticos / Planificación y control
Planificación y control

Construir el cronograma físico-financeiro a partir del orçamento

Tome el orçamento valorado como fuente, secuencie el trabajo, vincule cada partida a la actividad que la genera, reparta el dinero por los períodos, demuestre que los períodos suman el total del contrato, y publique la curva con la propuesta.

6 pasos16 minContratista generalPromotor / clienteGestora de proyectos / construcción

Cómo funciona, paso a paso

6 pasos a lo largo de la plataforma - qué hacer en cada uno y por qué importa.

1

Start from the priced orcamento, not from a summary

Presupuesto

Open the priced bill and confirm that every item carries a quantity, a unit and a value, and that the group structure is the one the cronograma will report against. Fix the structure here rather than inventing a second grouping for the schedule.

Por que: Lei 14.133 of 2021 requires the works package to carry a detailed budget grounded in measured quantities, so the bill is the legal source of the figures and the cronograma is a view of it. A curve built from a summary sheet quietly becomes a third document with a total of its own, and the first medicao is where the three are discovered to disagree.

EntradaPriced bill positionsItem groups of the orcamentoResultadoContract total to be spreadQuantities behind every figure
2

Sequence the work into a programme

Cronograma 4D

Build the activities the work is actually done in, give each one a duration that comes from the quantity and the crew rather than from the calendar you would like, and set the dependencies between them. Name the milestones the contract will be measured against.

Por que: The physical half of the cronograma is the half that gets skipped, because the financial half can be produced by dividing the total into equal months and nobody notices for a quarter. A programme built from quantities and crews is the only version that answers the question the client will ask in month three, which is whether the plan was ever achievable.

EntradaMethod and crew sizesQuantities behind every figureResultadoBaseline programmeMilestone dates named
3

Link every item to the activity that earns it

Modelo de costes 5D

Attach each bill item to the activity that will earn it, splitting an item across two activities where the work really is done in two places. Then look at what is left over on both sides: items no activity earns, and activities that earn nothing.

Por que: The leftovers are the finding. An item nothing earns is usually work that was priced and then left out of the plan, and an activity earning nothing is usually work that will be done and was never priced. Both are cheap to fix now and expensive to discover during a medicao, when one of them is already built.

EntradaBaseline programmePriced bill positionsResultadoEvery item linked to an activityItems no activity earns
4

Spread the money over the measurement periods

Finanzas

Let the linked values fall into the periods the contract measures in, and read the cumulative curve as well as the monthly bars. Note the month of peak funding and what the advance, if there is one, does to it.

Por que: The client reads the cronograma as a budget commitment and the contractor reads it as working capital, and the two readings meet at the peak. Named in advance it is a financing decision. Discovered in month five it is a conversation about slowing the work down, which costs both parties more than the finance would have.

EntradaEvery item linked to an activityMeasurement periods of the contractResultadoCash forecast per periodPeak funding named
5

Prove the periods add up to the contract sum

Validación

Run the check that the sum of the periods equals the total of the priced bill, and that no period is negative or empty in the middle of continuous work. Chase any difference back to the item that caused it rather than adjusting the last month to close it.

Por que: A cronograma that does not total to the contract sum will be rejected on sight, and closing the gap by editing the final month hides whatever caused it, usually an item linked twice or linked to nothing. The check takes seconds and the diagnosis it gives is the part worth having.

EntradaCash forecast per periodContract total to be spreadResultadoValidation report on the totalsDifference to explain
6

Publish it as the baseline the medicoes report against

Informes

Export the physical and the financial halves as one document with the same period headings, and keep the version that went with the proposal as the baseline. Later revisions are compared against it rather than replacing it silently.

Por que: Every medicao is read against the cronograma, and the whole conversation about delay depends on which version of it both sides are holding. A baseline kept as issued makes the comparison a fact. A cronograma quietly updated each month makes the job look on programme until the last month, when the remaining work no longer fits in it.

EntradaCash forecast per periodBaseline programmeResultadoCronograma export for the proposalBaseline the medicoes report against
Módulos

Módulos de este playbook

6 / 190 módulos de la plataforma

El mercado para el que está escrito este caso

Brasil

Todo en este caso sigue la forma en que la obra se mide, se valora y se paga en este mercado. Los documentos, el desglose de costes y las reglas de pago son los que se usan allí, no una versión genérica.

Normas que sigue

  • Lei 14.133
  • SINAPI
  • ABNT NBR 12721

No tienes que configurar nada de eso a mano. La primera vez que abres la plataforma te pregunta en qué mercado trabajas. Elige este y ajusta el idioma de la interfaz, carga la base de costes correspondiente, registra la clasificación de costes y añade un proyecto de ejemplo que puedes abrir enseguida.

Las comprobaciones de este mercado también vienen con la plataforma. Actívalas una vez y un presupuesto al que le falte algo que el mercado espera queda señalado mientras trabajas en él, no después de presentar la oferta.

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