ASTM E455
Full Name
ASTM E455 – Standard Test Method for Static Load Testing of Framed Floor or Roof Diaphragm Constructions for Buildings
Scope
ASTM E455 provides a standardized procedure for assessing the strength and stiffness of floor and roof diaphragms in building structures. This test method plays a crucial role in ensuring the structural integrity and safety of buildings, particularly their resistance to lateral forces such as wind and earthquakes.
ASTM E455 outlines a procedure where a static load is applied to a diaphragm assembly, simulating the effects of lateral forces. This load is applied incrementally at designated points, and the corresponding deflections are carefully measured and recorded. The collected data is then analyzed to determine:
- Load-deflection characteristics: this analysis reveals the diaphragm’s stiffness and its ability to resist deformation under load.
- Ultimate load capacity: the test identifies the maximum load the diaphragm can withstand before failure, providing a critical safety margin assessment.
- Connection performance: the test helps evaluate the strength and behavior of connections within the diaphragm assembly, ensuring they effectively transfer loads.
ASTM E455 testing finds application in various scenarios, including:
- New construction: verifying the design and construction of diaphragms in new buildings, ensuring compliance with building codes and design specifications.
- Renovations and modifications: assessing the impact of structural changes or additions on the existing diaphragm’s capacity.
- Forensic investigations: determining the cause of diaphragm failures and providing valuable data for repair or reconstruction efforts.
ASTM E455 Accredited Laboratory
Applied Testing & Geosciences, LLC is accredited for performing tests using the ASTM E455 standard.
Contact us today to learn more about our testing capabilities and how we can support your business.
Resources
Keywords
static load testing; diaphragms; floors; roofs; buildings; deflection; load-deflection; lateral stiffness; construction; shear stiffness; strength; serviceability; test method; design loads; in-plane shear behavior