Structural Estimator

Preliminary Cost & Carbon BOQ

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Frame Material

Slab System

Imposed Load (Qk)

No. of Floors

Grid Spacing X (m)

Grid Spacing Y (m)

Frame Geometry

Interactive 3D Wireframe (Auto-scaled)

Embodied Carbon (A1-A3)

TOTAL EMBODIED CARBON 0 kg (0 kg/m²)

Selected Sections:

BEAM IPE 300

COLUMN HEB 200

SLAB SYSTEM RC Slab

Bill of Quantities (Estimate)

Item Description	Quantity	Unit	Rate (Est.)	Total Cost
PROJECT TOTAL:				€ 0.00

Calculation Transparency

Detailed breakdown of engineering logic, Eurocode clauses, and carbon factors.

Element	Mass/Area	Carbon Factor	Total Carbon
TOTAL:			0 kg

Methodology & Clauses:

EN 1991-1-1 Loads:
Imposed loads (Qk) are taken from Eurocode 1 Table 6.1 (e.g., Cat B Office = 2.5 kN/m²).
EN 1992 / 1993 Preliminary Sizing:
• Slabs: Depth derived from span-to-depth ratios to satisfy deflection limits.
- RC Flat Slab (2-Way): L/28
- RC Slab (1-Way): L/24
• Beams: Sized for Bending Moment ($M_{Ed} = wL^2/8$) assuming simply supported.
• Columns: Sized for axial load accumulation from all floors.

Carbon Factors (A1-A3):
Values represent Cradle-to-Gate emissions.
• Steel: 1.55 kgCO₂e/kg (Avg European Blast Furnace)
• Concrete: 0.15 kgCO₂e/kg (C30/37)
• Timber: 0.45 kgCO₂e/kg (Glulam)