Procurement & Engineering • Centre Technique

Check-list : Quelles Données pour Chiffrer une Charpente Métallique ?

Les informations clés pour obtenir un devis quantitatif précis et conforme sous 24 à 48 heures.

Auteur : İdris YAĞMAHAN (Architecte) Revue technique par : Celalettin YAĞMAHAN (Ingénieur Principal Structure) Temps de lecture : 6 min de lecture Mis à jour : 2026-02-28
Conception Certifiée Eurocodes 3 & 8
Contrôle Qualité Usine EN 1090-2
Empotage Conteneur 40ft HC en Colis Plat
Assemblage 100% Boulonné (Zéro Soudure)

⚡ Synthèse Rapide / Résumé Exécutif

To generate a precise, cost-optimized structural steel building proposal without inflated contingency buffers, structural engineers require five foundational data sets: 1) Geometrical Footprint (clear span width, total length, clear eave height, and roof pitch), 2) Site Location & Climatic Codes (postal code for Eurocode 1 snow, wind, and seismic values), 3) Functional Equipment (overhead crane tonnage, mezzanine load ratings, solar PV roof allowances), 4) Envelope Insulation Requirements (PIR panel thickness or uninsulated), and 5) Commercial Scope & Incoterm (FOB port, DAP jobsite, or with on-site supervision). Providing complete data allows SerBuild to run 3D Tekla FEA models and deliver an itemized static calculation and price quote within 24 to 48 hours.

Points Clés & Avantages Économiques

  • ✔ 5 Core Parameters: Clear span, length, eave height, site postal code (for snow/wind), and delivery scope
  • ✔ Contingency Buffer Reduction: Complete data eliminates 10–15% provisional budget buffers in early estimates
  • ✔ Acceptable File Formats: DWG, DXF, IFC, Revit, PDF architectural sketches, or simple hand-drawn dimensioned layouts
  • ✔ Crane Sizing Rules: Crane payload (e.g. 10t), runway span, and hook height must be stated upfront for column corbel design
  • ✔ Solar PV Allowance: If rooftop solar is planned, specify additional panel dead load (typically 0.15–0.25 kN/m²)
  • ✔ Turnaround Time: SerBuild provides preliminary 3D models and fixed-price proposals within 24–48 hours of RFQ receipt

1. The 5 Foundational Parameters of a Structural Steel RFQ

Structural steel framing is custom-engineered to match the precise environmental loads and functional demands of your site. Providing the following information ensures an immediate, highly competitive proposal:

  • 1. Exact Internal Geometry: State clear span width (without intermediate columns), total building length, bay spacing (typically 6m), and clear eave height (distance from finished floor to underside of the lowest rafter haunch).
  • 2. Site Geographic Coordinates (Eurocode 1 Environmental Loads): Building codes vary dramatically across Europe. A site in Southern Germany (Snow Zone 3, 2.5 kN/m²) requires 35% more steel than a building in Southern France. Providing the site postal code allows our engineering software to pull exact Eurocode values automatically.
  • 3. Integrated Cranes, Mezzanines & Heavy Loads: State overhead crane payload (e.g. 5t, 10t, 20t), hook height, mezzanine floor area and live load requirements (e.g. 3.0 kN/m² for offices, 7.5 kN/m² for storage), and any planned rooftop solar PV panels.
  • 4. Thermal Envelope & Fire Rating: Specify sandwich panel thickness (e.g. 80mm PIR for heated warehouses, 120mm Rockwool for REI 120 firewalls, or single-skin sheet for unheated storage).
  • 5. Preferred Delivery Incoterm & Scope: Indicate whether you require Supply Only (DAP jobsite), Supply + Supervision, or Full Turnkey Erection.

2. RFQ Completeness vs Budget Accuracy Matrix

The table below shows how the completeness of your project information directly impacts proposal turnaround speed and pricing precision:

📊 Tableau Détaillé des Coûts & Spécifications (€ / m²)

Information Level Provided Typical Data Received Budget Accuracy Turnaround Time Next Steps Required
Level 1: Basic Dimensions Only Width x Length x Height (e.g. 20x50x6m) ± 15% (Provisional Range) 4 – 12 Hours Site climate loads & cladding selection
Level 2: Dimensions + Site Location + Use Dimensions, postal code, warehouse use, cladding choice ± 5% (Firm Preliminary) 24 Hours Confirmation of door openings & crane needs
Level 3: Full Architectural CAD / PDF Plans DWG layout, elevations, sections, door schedules, crane specs 100% Fixed Guaranteed Price 24 – 48 Hours Contract drafting & Tekla 3D static report
Level 4: Complete Engineering / IFC Tender Structural drawings, foundation specs, Tekla model, BOQ 100% Itemized Tender Bid 48 Hours Immediate manufacturing scheduling

🔍 Matrice Comparative d'Ingénierie

Parameter Minimum Requirement Recommended Detail Impact if Omitted
Building Span & Length Gross m² (e.g. 1,000 m²) Clear span width (e.g. 24m) x Length (50m) Requires assumed geometry; can alter steel weight by 20%
Eave Height Estimated height (e.g. 6m) Clear hook/racking height (e.g. 7.5m eave) May fail vertical clearance checks during rack install
Site Postal Code / City Country name (e.g. Germany) Exact postal code (e.g. 80331 Munich) Engineers must assume worst-case snow zone (+15% cost)
Cladding Specification Insulated or Not 80mm PIR / 100mm Rockwool / Single-skin Envelope budget variance of €25 to €60 per m²
Overhead Cranes Crane yes/no Crane tonnage (10t), span, and hook travel Columns cannot be sized for dynamic fatigue moments

📋 Déroulement du Projet Étape par Étape

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1. Determine Clear Internal Dimensions

Measure your required width, length, and minimum vertical eave clearance.

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2. Identify Site Postal Code

Note the project location to establish Eurocode snow, wind, and seismic criteria.

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3. Gather Existing Drawings

Collect any available architectural PDF, DWG, or hand-drawn sketches.

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4. Submit via SerBuild 5-Step Smart RFQ

Use our online sizing portal to upload drawings and configure parameters.

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5. Receive 3D Static Model & Proposal

Our structural engineers review your dossier and issue a detailed quote in 24–48h.

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6. Technical Video Review with Directors

Schedule an optional video consultation with our senior engineering directors.

Besoin d'un Dimensionnement & Devis Spécifique à Votre Projet ?

Transmettez dimensions, portées et coordonnées géographiques. Notre bureau d'études structure fournit une offre détaillée et une pré-analyse Eurocode 3 sous 24 à 48h.

Demander un Devis de Projet → Support Technique WhatsApp

Foire Aux Questions (FAQ)

Réponses détaillées sur l'ingénierie Eurocode, la fabrication, l'exportation et le montage.

Yes. A simple hand-drawn sketch showing width, length, eave height, door locations, and site city is completely sufficient for SerBuild engineers to model the building and provide a firm, itemized proposal within 24 hours.

You do not need to research meteorological loads. Simply provide the site postal code or town name, and our engineering software will automatically extract the exact characteristic snow load (Sk) and wind velocity (Vb,0) from the national annex.

Due to global steel raw material index dynamics, our fixed-price quotations are typically guaranteed for 30 days. We offer price-lock guarantees once the advance engineering milestone is activated.

Yes. Once the proposal is accepted, our structural team provides full column foundation reaction tables (axial loads, shear forces, and overturning moments in kN and kNm) so your local civil engineer can size concrete footings.

Yes. SerBuild models all buildings in Tekla Structures and exports standard IFC and 3D DWG models for seamless integration into your architect’s BIM coordination workflow.

Demandez une Étude Technique & Devis

Transmettez-nous vos dimensions ou plans pour une analyse d'ingénierie et une offre détaillée sous 24 à 48 heures.

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Étape 1 : Quel type de bâtiment en acier prévoyez-vous ?

Étape 2 : Emplacement du Projet & Dimensions Souhaitées

Étape 3 : Mode de Livraison & Équipements du Bâtiment

Étape 4 : Calendrier du Projet, Incoterms & Avancement

Étape 5 : Coordonnées & Téléversement de Plans / CAD

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Formats acceptés : PDF, DWG, DXF, IFC, RVT, STEP, ZIP, RAR, JPG, PNG
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