ISO 3443-3:1987 PDF

Name: ISO 3443-3:1987 — Tolerances for building — Part 3: Procedures for selecting target size and predicting fit
SKU: ISO 3443-3:1987
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Tolerances for building — Part 3: Procedures for selecting target size and predicting fit

Название (английский):

ISO 3443-3:1987

Tolerances for building — Part 3: Procedures for selecting target size and predicting fit

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 12
Дата публикации:: 19 февраля 1987 г.
Издание:: ISO IS 3443 edition 1 version 1
ICS:: 91.200

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Описание (английский):

Provides a basis for relating joint clearances and target sizes and for the prediction of fit within the context of dimensional coordination, including modular coordination. Is intended for use by component manufacturers when determining target sizes for standard components and by building designers when determining target sizes for construction on site, assessing the applicability of standard components or determining target sizes for non-standard components.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 3443-3:1987 - "Tolerances for building - Part 3: Procedures for selecting target size and predicting fit" provides standardized procedures to relate joint clearances and target sizes within dimensional coordination (including modular coordination). It gives a practical basis for predicting the probability of fit between manufactured components and in‑situ work, and for selecting target sizes (work sizes) so that joints meet required clearance limits.

Key topics and requirements

Scope and purpose: Relates component sizes, in‑situ space sizes, accuracy and tolerances to predict fit and select target sizes for standard and non‑standard components.

Core concepts: Uses the concepts of extension (space target size minus coordinating size) and deduction (component target size less than coordinating size) to maintain dimensional coordination.

Statistical basis: Assumes size deviations follow normal distributions; uses mean (systematic deviation) and standard deviation from measurement surveys or tolerance specifications.

Risk and probability of fit: Requires selection of acceptable risks of misfit (too large or too small joint clearances). Procedures reference multipliers (Q and q) to set target limits for chosen probabilities.

Procedure content: Provides calculations for lower and upper component target limits, maximum and minimum space extension, and deduction values. Worked examples appear in Annex B; inherent deviations are covered in Annex A.

Assumptions & limitations: Assumes components can be adjusted/placed to achieve required clearances or that constructed spaces can be measured prior to insertion. Best applied where variability data for component types or construction forms are available.

Practical applications

Component manufacturers: Determine optimum target sizes for standard components to maximise the probability of fit across applications.

Building designers and engineers: Evaluate applicability of standard components, set target sizes for on‑site construction, and design assemblies with predictable joint behavior.

Contractors and façade specialists: Use procedures to predict joint clearances, choose suitable jointing techniques, and assess acceptance risk on erection.

Quality and production engineers: Translate measurement surveys and tolerance specifications into design targets and acceptance criteria.

Related standards

ISO 3443-1: Basic principles for evaluation and specification

ISO 3443-2: Statistical basis for predicting fit

ISO 3443-4: Methods for predicting deviations of assemblies and allocation of tolerances

ISO 1791, ISO 1803-1, ISO 1803-2: Vocabulary and derived terms related to modular coordination and tolerances

Keywords: ISO 3443-3:1987, tolerances for building, target size, predicting fit, dimensional coordination, modular coordination, joint clearance, extension and deduction, probability of fit, component manufacturers, building designers.

ISO 3443-3:1987 PDF

Abstract

Похожие стандарты

Overview

Key topics and requirements

Practical applications

Related standards

Технические детали

ISO 3443-1:1979

Tolerances for building — Part 1: Basic principles for evaluation and specification

ISO 3443-2:1979

Tolerances for building — Part 2: Statistical basis for predicting fit between components having a normal dis…

ISO 3443-4:1986

Tolerances for building — Part 4: Method for predicting deviations of assemblies and for allocation of tolera…

SIST EN ISO 179-1:2026

Plastics - Determination of Charpy impact properties - Part 1: Non-instrumented impact test (ISO 179-1:2026)

ISO 1803-1:1985

Building construction — Tolerances — Vocabulary — Part 1: General terms

ISO 1803-2:1986

Building construction — Tolerances — Vocabulary — Part 2: Derived terms