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CasasCápsula library · 2026-10-12

Design for modular manufacture tolerances transport and assembly

Published 2026-10-12 · Updated 2026-10-31 · Leer en español
Construction with prefabricated elements.
Construction with prefabricated elements. Wikideas1 · CC0

Industrialising a home means designing a process that can be repeated, transported and checked. Manufacturers and assemblers should start with interfaces: frame, envelope, windows, services, supports and site connections.

Assign tolerances to each interface

We suggest defining datums, component tolerances, accumulated deviations and assembly acceptance criteria. A seal needs a documented working range; airtightness or watertightness cannot be inferred from one tolerance for the entire home. Drawings and inspection must use the same definitions.

Structural execution classes also cannot replace functional specifications. Before promising precision, establish which dimensions will be measured, with which instrument and when. Transport damage can change a unit accepted at the factory.

Design transport before freezing the model

Spain’s DGT states that exceeding statutory mass or dimension limits may require additional authorisation. Assess the loaded combination, route and competent authority. Home height is not loaded vehicle height: the platform occupies clearance too.

Prepare verifiable assembly

A schedule should distinguish delivery, placement and commissioning. Physically positioning a module in one day does not show that it is legally authorised, connected and ready for occupation. This distinction improves commercial and construction planning. Transport references here concern Spain.

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Sources and scope

Sources reviewed 11 October 2026. Handover and control lists are CasasCápsula editorial recommendations; they do not replace project calculations, tests or documents.

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