DAS

Lab

Free tools for architects, everywhere. Built on open data, running entirely in your browser.

An experimental section — tools are preliminary and evolving. Suggestions and corrections are welcome at info@derzawi.com.

Mapping

01MappingLive

Site Map

Export high-resolution satellite maps of any site, with scale bar and north arrow.

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02MappingLive

Topography & Profile

Contours and elevation sections for any site, from open elevation data.

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Structure

03StructureLive

Frame & Span

Preliminary depths, loads, moments and column sizes for concrete, steel and timber — Eurocode, ACI/ASCE, Japan, Egypt.

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04StructureLive

Bearing Walls

Minimum thickness, slenderness and stress for brick, block, stone, rammed earth, CSEB and adobe walls.

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Environment

05EnvironmentLive

Sun Path & Shadows

Solar angles, sunrise and sunset, and shadow lengths for any location, date, and time.

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06EnvironmentLive

Climate Snapshot

Temperature, rainfall, and wind rose for any site, from open climate data.

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07EnvironmentLive

Envelope & U-value

Thermal transmittance of wall and roof build-ups, layer by layer.

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08EnvironmentLive

Daylight & Ventilation

Window-to-floor ratios, daylight factor estimates, and cross-ventilation opening sizes.

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09EnvironmentLive

Rainwater Harvesting

Roof catchment, tank sizing, and yearly yield from local rainfall.

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10EnvironmentLive

Embodied Carbon

Quick embodied-carbon comparison of structural and envelope materials.

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Planning

11PlanningLive

Plot, FAR & Coverage

Plot ratio, site coverage, setbacks, and an area schedule for early massing.

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Drawing

12DrawingLive

Stair & Ramp

Riser/tread by the Blondel rule, stair geometry, ramp slopes and accessibility checks.

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13DrawingLive

Scale & Units

Drawing scale vs. paper size, and conversion between metric, imperial, and local area units.

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