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Simulación · Minimal Organization · City, health, knowledge, construction

Construction group

A construction and infrastructure group as a walkable model: see how a viaduct is built section by section and where frost, inspections and variations cost time.

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Trailer

TERRAMONT BAU is invented; quantities and durations are assumptions. With your project data the model shows what schedule and controlling keep apart today – such as the actual cycle per section, or variations and hindrances per trade.

How is a bridge construction project organised, and what is the process on site? The fictional construction group TERRAMONT BAU shows it. Head office is small, the action is outside: every project is a temporary organisation with a joint venture, subcontractors and a client who pays.

One section of the viaduct, built in cycles: the engineering office prepares it, the crew sets the formwork and fixes the reinforcement, the checking engineer accepts it while procurement calls off the concrete, then the section is cast, the concrete hardens and the launching girder moves one span forward. Target in the model: one section within twelve days.

In frost, casting and hardening take much longer; in a storm the cranes stand still. Prefabrication at the plant and clash detection in the model save time and variations. Alongside run a public tender, a variation because the ground differs from the plan, and the handover of a structure. Written for executive management, project and site management, estimating, contract management, young talent and public clients.

A bridge section is built

  1. 01

    Work preparation: drawings and bar schedules: The engineering office prepares the next section: drawings, bar schedules, concrete order.

  2. 02

    Set formwork, fix reinforcement: The crew sets the formwork and fixes the reinforcement.

  3. 03

    Checking engineer and concrete call-off run in parallel.

  4. 04

    Checking engineer accepts reinforcement: The checking engineer accepts the reinforcement.

  5. 05

    Call off concrete: Procurement calls off the concrete.

  6. 06

    Accepted, concrete coming.

  7. 07

    Concreting: A section is cast in one go.

  8. 08

    Concrete hardens: The concrete hardens.

  9. 09

    Launching girder moves forward: The launching girder moves one span forward.

  10. 10

    Section done.

A site at work

01

A site at work

6 buildings, 12 departments, about 500 staff: in the evening light golden arcs show who reports to whom.

Every floor opened up

02

Every floor opened up

Every building can be opened, floor by floor – right into single rooms such as ‘Site management (in the joint venture)’, with workplaces and people at work.

What is shown – why – for whom

Qué se muestra Por qué Para quién
Diagram ‘Year, week, day’: the cycle of sections and the frost Por quéshows weather in the construction schedule Para quiénSite management, client
Diagram ‘Where the time goes’: hardening and inspection Por quéshows where the twelve days go Para quiénSite management, work preparation
Diagram ‘Who works with whom’: client, joint venture, subcontractors, checking engineer Por quéshows the temporary organisation Para quiénProject management, client
Diagram ‘Who sits where – and reports to whom’: head office, site, plant Por quéshows how little happens at head office Para quiénBoard, young talent
Diagram ‘What each control does’: prefabrication, clash detection, partnering Por quéshows the effect on variations and duration Para quiénClient, board
Process ‘The ground differs from the plan’ Por quéshows notice of hindrance and variation Para quiénContract management, client
Process ‘A public tender arrives’ Por quéshows the award procedure under German procurement law (GWB, VOB) Para quiénEstimating, sales
Who works with whom

03

Who works with whom

‘Site management (in the joint venture)’ with all 9 relations: Estimating and bids, Engineering office (work preparation, BIM), Foremen and crews, Contracts and claims and Controlling and billing – and outside Public client (state road agency), Client's design office and Joint venture partner.

A bridge section is built

04

A bridge section is built

A single case can be followed – step by step, with the waiting time at every station. Target: one section within 12 days.

Films from the model

  • The building opens up

    Just before sunset the floors drift apart – ‘Headquarters’ opens up as the camera rises and circles the building until night falls.

  • Who reports to whom, who works with whom

    Blue hour above the site: first the golden arcs of the structure, then the collaboration of the most connected department, finally the whole building.

  • A day in time-lapse

    From ten in the morning to midnight in 26 seconds: the sun moves, the windows light up, at night the data lines glow.

  • Surge and disruption

    In time-lapse: ‘Contamination in the ground’ brings more work, then ‘Frost’. The control ‘Prefabrication’ set to ‘precast’ brings recovery.

  • Seven diagrams

    Calculated live from the model: ‘Who works with whom’, ‘Year, week, day’, ‘Management levels as a staircase’, ‘How a case flows’, ‘What each control does’, ‘What the work depends on’, ‘Where it gets tight’.

  • Using the software

    With the full interface: open a building, a department’s relations, ‘Contamination in the ground’, a control, diagrams with their panel, one case.

Departments in the model

  • Management

    Approves bid prices and carries the risk.

  • Business development

    Decides where to bid.

  • Estimating and bids

    Prices every item of the bill of quantities.

  • Engineering office (work preparation, BIM)

    Plans the construction sequence, checks drawings in the model.

  • Procurement

    Awards subcontracts, calls off concrete and steel.

  • Equipment centre

    Machinery, cranes, workshop.

  • Precast plant

    Casts walls and slabs regardless of weather.

  • Site management (in the joint venture)

    Leads the temporary project: schedule, cost, partners.

  • Foremen and crews

    Formwork, reinforcement, concreting.

  • Contracts and claims

    Gives notice of hindrance, files variations.

  • Controlling and billing

    Target and actual, progress payments, final account.

  • Safety and quality

    Instructs, inspects, checks.

Contamination in the ground

05

Contamination in the ground

The backlog grows floor by floor – the simulation shows where it gets tight and which control helps.

06

A day in 26 seconds

From ten in the morning to midnight in time-lapse: commuters, moving light, windows switching on – and at night the data lines.

All processes in the model

A bridge section is built

  1. 01Work preparation: drawings and bar schedules: The engineering office prepares the next section: drawings, bar schedules, concrete order.
  2. 02Set formwork, fix reinforcement: The crew sets the formwork and fixes the reinforcement.
  3. 03Checking engineer and concrete call-off run in parallel.
  4. 04Checking engineer accepts reinforcement: The checking engineer accepts the reinforcement.
  5. 05Call off concrete: Procurement calls off the concrete.
  6. 06Accepted, concrete coming.
  7. 07Concreting: A section is cast in one go.
  8. 08Concrete hardens: The concrete hardens.
  9. 09Launching girder moves forward: The launching girder moves one span forward.
  10. 10Section done.

A public tender arrives

  1. 01Client issues tender: A state agency tenders a bridge EU-wide.
  2. 02Bid or no bid?: Business development decides: does the project fit capacity and risk?
  3. 03No bid.
  4. 04Estimating and subcontractor enquiries run in parallel.
  5. 05Pricing all items: Estimating prices quantities per item.
  6. 06Subcontractor quotes: Subcontractors send quotes.
  7. 07Estimated.
  8. 08Management approves the price: Management sets risk margins and approves the price.
  9. 09Client evaluates, standstill period: The client evaluates the bids; losers are informed in advance.
  10. 10Lost.
  11. 11Review by the procurement tribunal: An unsuccessful bidder turns to the tribunal.
  12. 12Handover to the project team: Award: estimating hands over to the project team.
  13. 13Won.

The ground differs from the plan

  1. 01Notice of hindrance: At the river pier the drill hits rock instead of gravel: notice of hindrance.
  2. 02Variation proposal: Claims management calculates the extra cost.
  3. 03Client reviews the variation: The client reviews – often the longest waiting point.
  4. 04Negotiating the amount: Negotiating the amount.
  5. 05Adjudication: An adjudicator decides provisionally.
  6. 06Book the variation: Controlling books the variation.
  7. 07Settled.

A structure is handed over

  1. 01Report completion: Site management reports completion and requests acceptance.
  2. 02Acceptance with the client: Joint inspection, minutes, defects list.
  3. 03Remedy defects (subcontractors): Subcontractors remedy the defects.
  4. 04Final account: Controlling issues the final account.
  5. 05Client checks and pays: The client checks and pays.
  6. 06Closed.

How a construction group can use the model

  • Internal communication

    Head office, plant yard, workshop, precast plant, site and joint venture on one map. ‘Who sits where – and reports to whom’ shows how little happens at head office.

    Para quiénExecutive management, communications, project leads

  • Onboarding

    New site managers, foremen and commercial staff see who works with whom in the temporary organisation: client, partner firm, subcontractors, checking engineer.

    Para quiénNew staff in site management, engineering office and commercial

  • Training

    Apprentices and students trigger ‘Frost’ or ‘Storm: cranes stand still’ and watch the bridge cycle shift. ‘The ground differs from the plan’ teaches notices of hindrance and variations.

    Para quiénConstruction apprentices, civil engineering work-study students, trainees

  • Explaining to clients

    Public clients see where a section's twelve days go and why frost and inspections need time. ‘Who works with whom’ shows the roles on both sides.

    Para quiénProject management, business development, public clients

  • Strategic overview

    Prefabrication, clash detection in the model and partnering side by side: ‘What each control does’ shows the effect on variations and duration.

    Para quiénExecutive management, estimating, contract management

Diagrams from the model

07

Diagrams from the model

‘Who works with whom’ as a dome of arcs – one of 14 diagrams calculated live from the same data.

The whole software

08

The whole software

Situation, key figure, time-lapse, six views, controls and disruptions: one click on a department shows its task, location and all relations.

What you can change

Controls

  • Pace target: The client wants to finish earlier: more sections in less time.
  • Prefabrication: Reinforcement cages and precast parts from the plant: less time on site (model assumption).
  • Clash detection in the model: Design errors show up before construction: fewer variations (model assumption).
  • Partnering: Early involvement: more variations are accepted directly (model assumption).

Disruptions

  • Frost: Ten days of frost: concreting and hardening take much longer.
  • Contamination in the ground: For two weeks hindrances pile up; the crew works slower.
  • Subcontractor insolvent: For two months quotes and defect remedies take twice as long.
  • Storm: cranes stand still: For two days no cranes may operate.

What the model gives a construction group

  • 01

    The site in rhythm

    One section after another: the model shows formwork, inspection, casting and hardening as a running cycle, with queues as soon as something stalls.

  • 02

    Weather as a factor

    Frost stretches casting and hardening, storm stops the cranes. Seasons and disruptions change the schedule where everyone can see it.

  • 03

    Understanding variations

    Notice of hindrance, variation offer, review, negotiation, mediation: the process shows how unexpected ground becomes a contract issue.

  • 04

    Testing partnership

    With the controls ‘Partnering’ and ‘Clash detection in the model’, the model shows how early involvement and checked designs reduce disputes over variations (model assumption).

  • 05

    For site meetings and public briefings

    Open the model in a browser or put it up on a big wall, at a public information evening about a project or in the training centre.

  • TERRAMONT BAU am Morgen – tiefe Sonne, lange Schatten, die ersten Pendler auf dem Weg ins Haus.
    TERRAMONT BAU in the morning – low sun, long shadows, the first commuters on their way in.
  • 6 Häuser, 12 Abteilungen, rund 500 Beschäftigte: Im Abendlicht zeigen goldene Bögen, wer an wen berichtet.
    Headquarters in evening light – golden arcs show who reports to whom.
  • Kurz vor acht – Menschen strömen vom Parkplatz und von der Straße in die Häuser.
    Just before eight – people stream from the car park and the street into the buildings.
  • Blaue Stunde – In TERRAMONT BAU gehen die Fenster an.
    Blue hour – the windows of TERRAMONT BAU light up.
  • Nachts von oben – Zentrale offen, die Datenleitungen leuchten über dem Quartier.
    At night from above – Headquarters opened up, data lines glowing across the site.
  • Zentrale aufgeklappt – jede Etage mit Arbeitsplätzen und Menschen.
    Headquarters opened up – every floor with workplaces and people.
  • Dämmerung, Ansicht Leistung – Leuchtringe zeigen, wie ausgelastet jede Abteilung ist.
    Dusk, performance view – rings of light show how busy each department is.
  • Blick in die Etage von Bauleitung (in der Arbeitsgemeinschaft) – Tischreihen, darüber die Etagen als Lichtumriss.
    Looking into the floor of Site management (in the joint venture) – rows of desks, the floors above as outlines of light.
  • Jedes Haus lässt sich öffnen, Etage für Etage – bis in einzelne Räume wie „Bauleitung (in der Arbeitsgemeinschaft)“, mit Arbeitsplätzen und Menschen bei der Arbeit.
    A room of its own – Site management (in the joint venture).
  • Baustelle Talbrücke offen – alle Geschosse mit Arbeitsplätzen und Menschen.
    Viaduct construction site opened up – every floor with workplaces and people.
  • Gerätezentrale – alle Geschosse auf einmal, Ansicht Leistung.
    Equipment centre – all floors at once, performance view.
  • Aufbau in der Dämmerung – goldene Bögen von jeder Etage zu den Häusern, die an sie berichten.
    Structure at dusk – golden arcs from every floor to the buildings reporting to it.
  • „Bauleitung (in der Arbeitsgemeinschaft)“ mit allen 9 Beziehungen: Kalkulation und Angebote, Technisches Büro (Arbeitsvorbereitung, BIM), Poliere und Kolonnen, Verträge und Nachträge und Controlling und Abrechnung – und nach außen Öffentlicher Bauherr (Landesbetrieb Straßenbau), Planungsbüro des…
    Collaboration – Site management (in the joint venture) with all 10 relations – to departments, buildings and partners.
  • Datenflüsse bei Nacht – Systeme und Nutzer, verbunden durch leuchtende Leitungen.
    Data flows at night – systems and users linked by glowing lines.
  • Datenflüsse in der Dämmerung – welche Abteilung welches System nutzt.
    Data flows at dusk – which department uses which system.
  • Aufbau über das ganze Quartier – Berichtswege zwischen den Häusern.
    Structure across the whole site – reporting lines between the buildings.
  • Das ganze Netz bei Nacht – Zusammenarbeit im Haus und weit hinaus.
    The whole network at night – collaboration inside and far beyond.
  • Ein einzelner Fall lässt sich verfolgen – Schritt für Schritt, mit der Wartezeit an jeder Station. Ziel: ein Abschnitt binnen 12 Tagen.
    Every step labelled – name, how many are waiting, utilisation.
  • Ein Fall wird verfolgt – „Ein Brückenabschnitt entsteht“ – Schritt für Schritt durch das Haus.
    Following one case – ‘A bridge section is built’ – step by step through the building.
  • Die Rückstände wachsen Etage für Etage – die Simulation zeigt, wo es eng wird und welcher Regler hilft.
    Contamination in the ground – resources view, the backlog grows floor by floor.
  • Der Griff – Vorfertigung auf „Fertigteile“ – ein Lichtblitz zeigt, wo er wirkt.
    The lever – Prefabrication set to ‘precast’ – a flash shows where it acts.
  • Frühling bei TERRAMONT BAU – Zentrale offen, Leuchtringe zeigen die Auslastung.
    Spring at TERRAMONT BAU – Headquarters opened up, rings show the workload.
  • Sommerabend – warmes Licht, lange Schatten, goldene Bögen über dem Platz.
    Summer evening – warm light, long shadows, golden arcs above the square.
  • Herbst – Laub auf den Wegen, Ansicht Leistung.
    Autumn – leaves on the paths, performance view.
  • Winterabend – Schnee auf dem Quartier, Zentrale offen und hell, die Zusammenarbeit leuchtet.
    Winter evening – snow on the site, Headquarters open and lit, collaboration glowing.
  • „Wer mit wem arbeitet“ als Kuppel aus Bögen – eines von 14 Schaubildern, die live aus denselben Daten gerechnet werden.
    Diagram ‘Who works with whom’, calculated live from the model.
  • Schaubild „Jahr, Woche, Tag“, live aus dem Modell gerechnet.
    Diagram ‘Year, week, day’, calculated live from the model.
  • Schaubild „Führungsebenen als Treppe“, live aus dem Modell gerechnet.
    Diagram ‘Management levels as a staircase’, calculated live from the model.
  • Schaubild „Wie ein Vorgang fließt“, live aus dem Modell gerechnet.
    Diagram ‘How a case flows’, calculated live from the model.
  • Schaubild „Was welcher Regler bewirkt“, live aus dem Modell gerechnet.
    Diagram ‘What each control does’, calculated live from the model.
  • Schaubild „Woran die Arbeit hängt“, live aus dem Modell gerechnet.
    Diagram ‘What the work depends on’, calculated live from the model.
  • Schaubild „Wo es eng wird“, live aus dem Modell gerechnet.
    Diagram ‘Where it gets tight’, calculated live from the model.
  • Schaubild „Wer führt wen“, live aus dem Modell gerechnet.
    Diagram ‘Who leads whom’, calculated live from the model.
  • Die ganze Software – Lage, Kennzahl, Zeit, Ansichten und die Regler unten.
    The whole software – situation, key figure, time, views and the controls below.
  • Zentrale gewählt – Etagenliste rechts, die Etagen schweben auseinander.
    Headquarters selected – floor list on the right, the floors drift apart.
  • Lage, Kennzahl, Zeitraffer, sechs Ansichten, Regler und Störungen: Ein Klick auf eine Abteilung zeigt Aufgabe, Ort und alle Beziehungen.
    Site management (in the joint venture) – card with task, location and all relations.
  • Altlast im Baugrund ausgelöst – Chronik, Kennzahl und Engpass reagieren.
    Contamination in the ground triggered – timeline, key figure and bottleneck react.
  • Gegensteuern – Vorfertigung aufgestockt – die Kachel zeigt die Wirkung seit dem Griff.
    Countering – Prefabrication increased – the tile shows the effect since the change.
  • Schaubild „Wie ein Vorgang fließt“ mit Tafel – Befunde in Sätzen.
    Diagram ‘How a case flows’ with its panel – findings in sentences.
  • Schaubild „Wer mit wem arbeitet“ mit Tafel.
    Diagram ‘Who works with whom’ with its panel.
  • Vorgang verfolgen – Schritt, Wartezeit und Zusage auf der Karte.
    Follow a case – step, waiting time and target on the card.
  • Der Rundgang führt in acht Schritten durch die Software.
    The tour leads through the software in eight steps.
  • 36 Organisationen zur Auswahl, jede mit eigenem Bild.
    36 organisations to choose from, each with its own picture.

Your project as a model

We discuss which processes of your company or of a specific project the model should show, and which data you have. You get the password for the simulation from us as soon as you ask for it.

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Minimal Organization: Baukonzern

Los datos van solo a este sitio y sirven únicamente para responderle.

Basis and limits

Fictional construction group · model based on researched industry structures · no forecast for real companies

1 case = 1 bridge section, 1 tender, 1 variation or 1 acceptance · 1 figure ≈ 10 employees

All volumes, durations, rates and capacities are model assumptions, not values of a real construction group.

The bridge is built in sequence: one section after another, with a launching girder.

Documented: award under GWB and VOB, notice of hindrance and variation under VOB/B, acceptance within twelve working days, joint venture as a separate company.

Public sources the model is based on:

  • HOAI 2021 (Leistungsphasen)
  • VOB/B (Vergabe- und Vertragsordnung für Bauleistungen)
  • GWB Teil 4 und VgV
  • BGB §§ 640, 634a, 650a ff.
  • Hauptverband der Deutschen Bauindustrie (Arbeitsgemeinschaft)

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TERRAMONT BAU is invented; quantities and durations are assumptions. With your project data the model shows what schedule and controlling keep apart today – such as the actual cycle per section, or variations and hindrances per trade.