Overview
ISO 8275:2023 - Hinged or pivoted doors: Determination of the resistance to vertical load specifies a laboratory method for measuring permanent deformation when a vertical load is applied to an open door leaf fixed in its door frame (or in a typical frame representative of intended use). The standard applies to all vertically hinged or pivoted doors and replaces the 1985 edition with updates for pivoted doors and refined technical content.
Key topics and technical requirements
- Scope: Tests permanent (residual) deformation caused by a vertical load on an open door leaf in its frame.
- Test specimen conditions: Storage and testing in a non‑destructive environment: 15 °C to 30 °C and 25 % to 75 % relative humidity. Glazed doors tested with glazing installed per manufacturer’s instructions.
- Test setup: Door positioned at (90 ± 5)° to the frame; diagonal measurement D taken before and after testing to quantify residual deformation.
- Preload and load application:
- Preload of (200 ± 4) N applied to the top of the lock-side corner (50 ± 5 mm from opening edge) for (60 ± 5) s to take up hinge slack.
- Static test load F applied to the same point for (300 ± 5) s; measure maximum deflection under load and residual deformation after load removal.
- Loads must be applied/removed in increments ≤ 100 N, with load accuracy ±2 % to avoid dynamic effects.
- Apparatus accuracy:
- Loading device accuracy 2 % (weights or calibrated ram).
- Measuring equipment accuracy 0,1 mm.
- Results & reporting: Record deformation under load, residual deformation in vertical plane and change in diagonal D. Test report must reference ISO 8275:2023 and include specimen identification, materials, hardware, frame details, storage conditions, applied load, results, damage observed, deviations, laboratory name and date.
Applications and who uses it
- Door manufacturers - validate product durability and claim conformance when doors are sold as leaves or as complete door sets.
- Test laboratories and certification bodies - carry out standardized testing for type approvals, product certification, and quality assurance.
- Specifiers, architects, building owners - assess suitability of door assemblies for high‑use or safety‑sensitive installations.
- R&D and quality control teams - evaluate hinge design, hardware location, glazing effects and assembly robustness against vertical loads (e.g., child pulling on handle).
Related standards
- ISO 22496 - terminology (vocabulary for windows and pedestrian doors) used by ISO 8275.
- EN 947 - referenced normative source for similar testing; see bibliography of ISO 8275:2023.
Keywords: ISO 8275, hinged doors testing, pivoted doors, resistance to vertical load, door deformation test, door set test procedure, vertical load resistance, door certification.