ケース / 積算とコスト
積算とコスト

encargos sociais を確定し desoneração について決定する

各職種の時間当たりコストを組み立て、orçamento 全体について給与制度を選び、それに対応する表に合わせて各 composição を組み直し、他方の表に残った composição がないことを証明し、積算された encargos を実際に支払った folha と照合する。

6ステップ16 分総合建設会社専門工事業者コストコンサルティング会社 / 積算事務所

仕組みをステップごとに

プラットフォーム全体で6ステップ - 各ステップで何をするか、そしてなぜ重要か。

1

Build the hourly cost of each function

労務単価

Enter the wage each function is paid under the collective agreement of the region and the year, and keep the base wage and the encargos as two visible numbers rather than one loaded rate. Do it for the servente and the encarregado as well as for the pedreiro.

理由: A loaded rate cannot be re-based when the agreement is renewed or when the payroll regime changes, and both happen inside the life of one estimate. Split, the same change is one figure edited in one place, and the composicoes underneath follow it.

入力Collective agreement wage ratesFunctions the work needs出力Hourly labour ratesBase wage separated from the burden
2

Choose the payroll regime for the whole orcamento

見積根拠

Decide whether this estimate is priced with the contribution on payroll or on turnover, check the edital in case it fixes the answer for you, and record the decision on the basis of estimate together with the encargos percentage it implies. One regime, one percentage, one orcamento.

理由: Lei 12.546 of 2011 makes this a company decision with a real effect on the labour cost, and the reference bases publish a separate table for each answer. Recorded once at the top, it becomes a fact everybody working on the estimate can check against. Left implicit, it is rediscovered by whoever opens the file next, and they will assume whichever table they used last.

入力Company turnover and payrollEncargos tables for both regimes出力Regime recorded for this orcamentoEncargos rate that follows from it
3

Rebuild every composicao on the chosen table

複合単価

Push the chosen encargos percentage through every composicao that carries labour, including the auxiliares underneath them, and read the change in the total. Do it as one pass rather than as a correction applied to the items somebody happens to open.

理由: The auxiliares are what get missed, because they are priced early and then behave like insumos. An argamassa still carrying the other table quietly prices the mason inside it under a regime the rest of the estimate has abandoned, and the item above it looks entirely normal.

入力Encargos rate that follows from itComposicoes holding labour出力Composicoes rebuilt on one tableCost analysis of the change
4

Prove nothing was left on the other table

検証

Run the orcamento against the recorded regime and list every position whose labour still carries the percentage of the other one. Treat an empty list as the deliverable of this step, not as a formality.

理由: This is the one error in the whole estimate that produces no symptom. A mixed orcamento totals cleanly, prints cleanly and reads as internally consistent, and it is discovered either by an analyst comparing your labour cost with the published table or by nobody at all. A machine asking the question line by line is the only reliable reader.

入力Composicoes rebuilt on one tableRegime recorded for this orcamento出力Validation report on the regimePositions left on the other table
5

Compare the priced burden with the folha you paid

給与

Take a period that has closed and put the encargos you priced next to the encargos the payroll actually paid, split between the contributions, the paid absences and the provisions. Ask which part of the difference is a wrong percentage and which is a job that worked more overtime than it planned.

理由: The published table describes an average company, and yours has a real absence rate, a real overtime pattern and a real turnover of labour. The gap is a fact about the company rather than about the job, and it is the same gap on every job until somebody measures it.

入力Encargos rate that follows from itPayroll actually paid出力Gap between priced and paidDifference split by cause
6

Feed the difference back into the next estimate

実行原価計算

Close the loop in post-calculation: put the difference beside the hours the site actually booked, decide which part is a permanent correction to your own encargos figure, and change the figure rather than remembering to add a bit next time.

理由: A correction that lives in an estimator's head is applied on the jobs they price and nowhere else, and it leaves with them. A corrected rate in the cost database is applied by everybody, and the next comparison measures the correction instead of rediscovering the original gap.

入力Gap between priced and paidHours booked on site出力Corrected rate for the next orcamentoTrend across jobs
モジュール

このプレイブックのモジュール

プラットフォーム 190 モジュール中 6

The market this case is written for

ブラジル

Everything in this case follows how construction work is measured, priced and paid for in this market. The forms, the cost breakdown and the payment rules are the ones used there, not a generic version of them.

Standards it follows

  • Lei 14.133
  • SINAPI
  • ABNT NBR 12721

You do not have to set any of that up by hand. The first time you open the platform it asks which market you work in. Choose this one and it sets the interface language, loads the matching cost database and records the cost classification, and it adds an example project you can open straight away.

The rule checks for this market come with the platform too. Switch them on once and an estimate that misses something the market expects is flagged while you are still working on it, not after the tender has gone out.

積算とコストの他のケース

積算とコスト

送付前に見積を確認する

積算済みの内訳書を検証ルールにかけ、すべての警告とエラーを解消し、そのまま顧客に渡せるきれいなレポートを出力する。

3ステップ8 分開く
積算とコスト

コストデータベースから見積を作成する

実在のコストデータベースから積算項目を取り出して内訳書を組み立て、繰り返し使う積み上げをアセンブリにまとめ、入札額を確定する前にチェックを実行します。

4ステップ12 分開く
積算とコスト

コストリスクから予備費を設定する

単一値の見積を幅のある値に変え、本当に不確実性のある項目についてモンテカルロシミュレーションを実行し、P50からP90の分布を読み取り、行ごとに根拠を示せる予備費を設定します。

3ステップ11 分開く