Architect Calculator

Gross Floor Area: 12,500.00 m2 Net-to-Gross Ratio: 0.82 Net Gross Area: 10,250.00 m2

Average Unit Size: 85.00 m2 Estimated Units: 120 Persons per Unit: 2.50 Estimated Population: 300

Parking Ratio: 1.00 spaces/unit Parking Spaces: 120 2. U-Value Calculator ( uvalue_calculator.py ) Calculates the thermal transmittance (U-value) of a multi-layer wall, roof, or floor construction by summing thermal resistances of each layer plus surface resistances. Parameters Parameter Flag Default Unit Description Layers --layers Required JSON string Array of layer objects Rsi Internal --rsi-internal 0.13 m2K/W Internal surface resistance Rsi External --rsi-external 0.04 m2K/W External surface resistance Each layer object: {"name": "...", "thickness_mm": N, "conductivity": N} Example python scripts/uvalue_calculator.py --layers '[ {"name": "Brick", "thickness_mm": 102, "conductivity": 0.77}, {"name": "Cavity air gap", "thickness_mm": 50, "conductivity": 0.18}, {"name": "Mineral wool", "thickness_mm": 100, "conductivity": 0.035}, {"name": "Concrete block", "thickness_mm": 140, "conductivity": 1.13}, {"name": "Plaster", "thickness_mm": 13, "conductivity": 0.16} ]' Sample Output === U-Value Calculator === Layer Thickness(mm) Conductivity(W/mK) R-value(m2K/W)

Rsi (internal) -- -- 0.1300 Brick 102 0.770 0.1325 Cavity air gap 50 0.180 0.2778 Mineral wool 100 0.035 2.8571 Concrete block 140 1.130 0.1239 Plaster 13 0.160 0.0813 Rse (external) -- -- 0.0400

Total R-value: 3.6425 m2K/W U-value: 0.2745 W/m2K

Passive House target (wall): 0.15 W/m2K -- DOES NOT MEET Typical code target (wall): 0.30 W/m2K -- MEETS TARGET 3. Daylight Calculator ( daylight_calculator.py ) Estimates average daylight factor for a side-lit room using the BRE simplified formula. Parameters Parameter Flag Default Unit Room Width --room-width Required m Room Depth --room-depth Required m Room Height --room-height Required m Window Width --window-width Required m Window Height --window-height Required m Window Sill Height --window-sill-height Required m Glazing Transmittance --glazing-transmittance 0.65 ratio Average Reflectance --average-reflectance 0.50 ratio Example python scripts/daylight_calculator.py
--room-width 4.0 --room-depth 6.0 --room-height 3.0
--window-width 2.5 --window-height 1.8 --window-sill-height 0.9 Sample Output === Daylight Factor Calculator === Room: 4.00m W x 6.00m D x 3.00m H Window: 2.50m W x 1.80m H (sill at 0.90m)

Window Area: 4.50 m2 Total Room Surface Area: 96.00 m2 Window-to-Floor Ratio: 18.75% Glazing Transmittance: 0.65 Average Reflectance: 0.50 Visible Sky Angle: 60.1 deg

Average Daylight Factor: 2.34%

Assessment: ADEQUATE (target >= 2.0% for habitable rooms) 4. Egress Calculator ( egress_calculator.py ) Calculates occupant load, required number of exits, minimum exit widths, and travel distance compliance per IBC. Parameters Parameter Flag Default Description Floor Area --floor-area Required Net floor area in m2 Occupancy Type --occupancy-type Required IBC occupancy (A-1 to U) Sprinklered --sprinklered False Flag: building is sprinklered Num Stories --num-stories 1 Number of stories Example python scripts/egress_calculator.py --floor-area 800 --occupancy-type B --sprinklered --num-stories 4 Sample Output === Egress Calculator === Floor Area: 800.00 m2 Occupancy Type: B (Business) Sprinklered: Yes Number of Stories: 4

Occupant Load Factor: 9.3 m2/person Occupant Load: 86 persons

Required Exits: 2 Min Exit Width (total): 1,376 mm Width per Exit: 688 mm Min Door Width: 813 mm (32 inches)

Max Travel Distance: 91.0 m (300 ft) [sprinklered] Max Common Path: 23.0 m (75 ft) Max Dead End: 15.0 m (50 ft)

COMPLIANCE: Review travel distances on plans. 5. Structural Load Calculator ( structural_load_calculator.py ) Calculates tributary area gravity loads for preliminary structural sizing. Parameters Parameter Flag Default Unit Description Tributary Area --tributary-area Required m2 Column tributary area Num Floors --num-floors Required integer Number of supported floors Dead Load --dead-load 4.5 kN/m2 Dead load per floor Live Load --live-load auto kN/m2 Live load (auto per occ.) Occupancy Type --occupancy-type office string For auto live load selection Example python scripts/structural_load_calculator.py --tributary-area 36 --num-floors 8 --occupancy-type office Sample Output === Structural Load Calculator === Tributary Area: 36.00 m2 Number of Floors: 8

Dead Load: 4.50 kN/m2 per floor Live Load: 2.50 kN/m2 per floor (office) Total per Floor: 7.00 kN/m2

Load per Floor: 252.00 kN Total Column Load: 2,016.00 kN (8 floors) Factored Load: 2,822.40 kN (1.2D + 1.6L)

Preliminary Column: ~400x400 mm RC (fc'=35 MPa) 6. Energy Calculator ( energy_calculator.py ) Estimates annual heating and cooling energy demand using the degree-day method. Parameters Parameter Flag Default Unit Description Floor Area --floor-area Required m2 Conditioned floor area Envelope Area --envelope-area Required m2 Total envelope area Average U-value --average-u-value Required W/m2K Area-weighted average U Heating Degree Days --heating-degree-days Required Kd Annual HDD (base 18C) Cooling Degree Days --cooling-degree-days Required Kd Annual CDD (base 24C) Ventilation Rate --ventilation-rate 0.5 ACH Air changes per hour Internal Gains --internal-gains 5.0 W/m2 Internal heat gains Example python scripts/energy_calculator.py
--floor-area 500 --envelope-area 800 --average-u-value 0.35
--heating-degree-days 3000 --cooling-degree-days 500 Sample Output === Energy Calculator === Floor Area: 500.00 m2 Envelope Area: 800.00 m2 Average U-value: 0.35 W/m2K

Heating Degree Days: 3,000 Kd Cooling Degree Days: 500 Kd Ventilation Rate: 0.50 ACH Internal Gains: 5.00 W/m2

Transmission Loss: 6,720.00 kWh/yr Ventilation Loss: 4,050.00 kWh/yr Internal Gains: -2,190.00 kWh/yr Heating Demand: 8,580.00 kWh/yr

Cooling Demand: 2,356.00 kWh/yr

Total Demand: 10,936.00 kWh/yr EUI: 21.87 kWh/m2/yr

Passive House target: 15 kWh/m2/yr -- DOES NOT MEET 7. Cost Calculator ( cost_calculator.py ) Estimates construction cost based on building type, quality level, and geographic region. Parameters Parameter Flag Default Description GFA --gfa Required Gross floor area in m2 Building Type --building-type Required residential/office/retail/hospital/school/hotel Quality --quality standard basic/standard/premium Region --region north-america north-america/europe/middle-east/asia/australia Include External --include-external False Flag: include site works Example python scripts/cost_calculator.py --gfa 5000 --building-type office --quality premium --region europe Sample Output === Construction Cost Calculator === Gross Floor Area: 5,000.00 m2 Building Type: Office Quality Level: Premium Region: Europe

Base Cost Rate: 2,800.00 USD/m2 Construction Cost: 14,000,000 USD

Professional Fees (12%): 1,680,000 USD Contingency (7.5%): 1,050,000 USD External Works: --

Total Development Cost: 16,730,000 USD Cost per m2 (total): 3,346.00 USD/m2 Methodology Reference Detailed formulas and methodology for each calculator are documented in references/calculator-reference.md . Error Handling All calculators validate inputs and provide clear error messages: Missing required parameters display usage help Out-of-range values are rejected with explanatory messages Invalid occupancy types list accepted values Malformed JSON input shows expected format Integration JSON output ( --json flag) enables integration with: Other scripts in the pipeline Spreadsheet tools (parse JSON) Web dashboards Automated reporting systems BIM parameter injection