top of page



The Rapid Upper Limb Assessment (RULA) is a survey method developed for use in workplace ergonomic investigations where work-related upper limb impairments have been reported. RULA is a screening tool that assesses biomechanical and postural loading of the whole body with particular attention to the neck, trunk and upper limbs. A reliability study was conducted using RULA for a group of VDU users and sewing machine operators. The RULA assessment takes very little time to complete and the scoring creates a task list to indicate the level of intervention required to reduce the operator's risk of injury from physical load. RULA is intended to be used as part of a broader ergonomics study.

ISO 11226:2000

International standards for 'Static Work Posture Assessment' set ergonomic recommendations for a variety of work tasks. This standard informs those involved in the design or redesign of tasks, tasks and products that are familiar with basic concepts of ergonomics in general and working posture in particular, and specifies recommended limits for static working postures. Minimal external force exercise while considering the body angle and time aspect. It is designed to help assess health risks in the workforce by providing guidelines for the evaluation of some occupational variables and applies to the adult workforce. These recommendations reasonably protect nearly all healthy adults. Recommendations regarding health risks and protection are based primarily on experimental studies regarding musculoskeletal loads, discomfort/pain and endurance/fatigue associated with osteopathic conditions.

EN 1005-4

EN 1005-4 + A1 Machinery Safety - Human Performance - Part 4: Assessment of Working Postures and Movements Associated with Machinery - This European standard provides guidance when designing machinery or components that affect and assess the health risks posed by machinery alone . - Relevant postures and movements during assembly, installation, operation, adjustment, maintenance, cleaning, repair, transportation and disassembly This European standard specifies the requirements for postures and movements with no or minimal action of external forces. This requirement is intended to reduce health risks for nearly all healthy adults. This European Standard does not apply to machines manufactured before the date CEN published this European Standard.


OWAS identifies the most common working postures for the back (4 postures), arms (3 postures) and legs (7 postures) and the weight of the load handled (3 categories). A full-body posture is described by a 4-digit code for this body part. These 252 postures were grouped into four behavioral categories representing the need for ergonomic changes. Observations are made in “snapshots” and sampling is usually at regular time intervals. OWAS was developed in Finland in 1973 by the steel industry company Ovako Oy to account for maintenance workloads in iron smelting ovens (Karhu 1977). A portable computer system for coding and analysis of OWAS has been developed (Kivi 1991).


The NASA-OBI method examines static physical forces affecting the skeletal and muscular systems. Represent unhealthy loads as a diagram. It can also support the arms or legs to reduce the load on a given body part of the test subject. Each moment in the examined workflow is rated on a scale of 1 to 4. 1 point for no change required, 4 points for each time an immediate change is required.


The analysis allows us to measure the length of the journey within a given time interval, the operator's path can be plotted using a small sphere in model space. Based on the timeline, you can manually or automatically enter the time required for the measurement. The density of spheres used for display can be set in the Analysis panel.


Availability checks provide essential information for analysis and redesign processes. Selected human models may display the reach of the right, left, or both arms. The location of objects and devices is evaluated according to the indicated access range.

bottom of page