ANSI/RESNET/ICC/ACCA 310-2025: HVAC Installation Grading
System design, duct integrity, airflow, and refrigerant charge all play a role in residential HVAC performance. When these components are improperly designed or installed, homeowners…
ANSI Z97.1-2026 & Safety Glazing Material Markings
For a change, look at glass (or plastic), not through it. In small lettering, you might see some letters and numbers. Markings like “ANSI Z97.1-2026”…
ASTM E18-25: Rockwell Hardness Standard Test Methods
Hardness often is attached to a multitude of definitions, including resistance to local penetration, scratching, and abrasion, yet it is not quite a fundamental property…
ASTM D4169-23: Testing Shipping Containers
ASTM D4169-23: Standard Practice for Performance Testing of Shipping Containers and Systems provides a uniform basis of evaluating the ability of shipping units to withstand…
ANSI/OPEI B71.9-2022: Multipurpose Off-Highway Utility Vehicles
ANSI/OPEI B71.9-2022: Multipurpose Off-Highway Utility Vehicles is an American National Standard that establishes the equipment, configuration, and performance of multipurpose off-highway utility vehicles (MOHUVs). What…
Creating a Table of Specifications (aka “Test Blueprint”)
It can be difficult to decide what questions to include on the final exam of a certificate course. A common approach is to comb through…
ASTM E691-23: Interlaboratory Study to Determine Test Method Precision
ASTM E691-23: Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method features techniques for planning, conducting, analyzing, and treating…
Item and Form Analysis
Every certificate program accredited by ANAB has a summative (i.e., final) assessment following the course to determine whether learners have met the course learning objectives….
IEC Extended Version (EXV)
Extended versions (EXVs) of International Electrotechnical Commission (IEC) standards provide comprehensive content and the reference document of an IEC standard into one easy-to-use document, making…