Fall From Height Houston Construction Accident Lawyer

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Fall protection is the use of controls designed to protect personnel from falling or in the event they do fall, to stop them without causing severe injury. Typically, fall protection is implemented when working at height, but may be relevant when working near an edge, such as near a pit or hole, or performing work on a steep surface.

There are four generally accepted categories of fall protection: fall elimination, fall prevention, fall arrest, and administrative controls.^[1] According to the US Department of Labor, falls account for 8% of all work-related trauma injuries leading to death.^[2] Federal statutes, standards, and regulations in the United States pertaining to the requirements for employers to provide fall protection are administered by OSHA.^[3]

Falls from elevations were the fourth leading cause of workplace death from 1980 through 1994, with an average of 540 deaths per year accounting for 10% of all occupational fatalities. 42% of all construction workers’ deaths occur from falling.^[4]

Falls are a concern for oil and gas workers, many of whom must work high on a derrick. A study of falls over the period 2005–2014 found that in 86% of fatal falls studied, fall protection was required by regulation, but it was not used, was used improperly, or the equipment failed. Many of the fatalities were because, although the workers were wearing harnesses, they neglected to attach them to an anchor point.^[5]

Fall Protection

In most work-at-height environments, multiple fall protection measures are used concurrently.

Fall elimination

Fall elimination is often the preferred way of providing fall protection. This entails finding ways of completing tasks without working at heights.

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Fall prevention

Fall guarding is the use of guard rails or other barricades to prevent a person from falling. These barricades are placed near an edge where a fall-hazard can occur, or to surround a weak surface (such as a skylight on a roof) which may break when stepped on.
Fall restraint is a class of personal protective equipment to prevent persons who are in a fall hazard area from falling, e.g., fall restraint lanyards. Typically, fall restraint will physically prevent a worker from approaching an edge.

Fall Arrest

Fall arrest is the form of fall protection which involves the safe stopping of a person already falling. It is one of several forms of fall protection, forms which also include fall guarding (general protection that prevents persons from entering a fall hazard area e.g., guard rails) and fall restraint (personal protection which prevents persons who are in a fall hazard area from falling, e.g., fall restraint lanyards).

Fall arrest is of two major types: general fall arrest, such as nets; and personal fall arrest, such as lifelines. The most common manifestation of fall arrest in the workplace is the Personal Fall Arrest System, or PFAS (“lifeline”).

Such a system should include 5 elements referred to as ABCDs of Fall Arrest:

A – Anchorage – a fixed structure or structural adaptation, often including an anchorage connector, to which the other components of the PFAS are rigged.
B – Body Wear – a full-body harness worn by the worker.
C – Connector – a subsystem component connecting the harness to the anchorage – such as a lanyard.
D – Deceleration Device – an essential subsystem component designed to dissipate the forces associated with a fall arrest event. It is good practice and recommended that these are also included in Restraint systems, in case of foreseeable misuse.
E – Emergency Plan & Equipment – a clear and simple approach to the rescue of a suspended worker following a fall arrest event. All workers should be familiar with the site-specific plan and competent to implement it. If a suspended worker is not recovered in good time, they may suffer the potentially serious effects of “suspension trauma.”

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Workers are required to have training in the use of fall protection equipment. This is legislated by Occupational Health and Safety Groups such as OSHA in the USA, and in Canada, the Provincial legislative bodies. Training is required to include instruction on theoretical aspects of using the equipment, and also practical aspects. Typically fall protection, sometimes called fall arrest class is 8 hours long for general workers but may include a second 8 hours of training for workers who climb communication towers, or oil derricks. Fall protection training include information on the use, maintenance, inspection and hazards of using fall protection equipment.

Each of these elements is critical to the effectiveness of a personal fall arrest system. There are many different combinations of products that are commonly used to assemble a personal fall arrest system, and each must meet strict standards.^[2]^[3] The specific environment or application generally dictates the combination or combinations that are most appropriate.

The U.S. Department of Labor’s Occupational Safety and Health Administration specifies under Title 29 of the Code of Federal Regulations that individuals working at height must be protected from a fall injury, and fall arrest is one of several forms of fall protection as defined within that Code.^[1]

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Energy Absorption

To arrest a fall in a controlled manner, it is essential that there is sufficient energy absorption capacity in the system. Without this designed energy absorption, the fall can only be arrested by applying large forces to the worker and to the anchorage, which can result in either or both being severely affected.

An analogy for this energy absorption is to consider the difference in dropping an egg onto a stone floor or dropping it into soft mud. Even for the same fall distance and weight of egg (the input energy), there will be more damage with the stone floor as the arrest distance is smaller and so forces must be higher to dissipate the energy. For the soft mud, the arrest distance is longer and so arrest forces are lower but the egg is still stopped and is hopefully undamaged.

Because fall arrest designs require high-rate-energy capacity design methods, fundamental fall arrest design is tedious and esoteric. Thus, most fall arrest parts and systems are designed to the force standards contained in Federal OSHA 29CFR1910.66 appendix c, a force-type design standard that accounts for required energy considerations. The standard mitigates PPE interchangeability problems, allows wide use by designers not versed in high rate energy methods, and it limits the force into the worker to a survivable level.

Actual loads on the user and anchor-anchorage vary widely with user weight, the height of fall, geometry, and type of line/rope. Excessive energy into the support and user is avoided by the use of energy-absorbing PPE designed for the 1800 lbs maximum of the referenced Federal OSHA standard. (Designers should be cautioned that the force values of the standard are based on high rate energy system design and thus its force values are not necessarily inter-related.)

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The most common fall arrest system is the vertical lifeline: a stranded rope that is connected to an anchor above, and to which the user’s PPE is attached either directly or through a “shock-absorbing” (energy absorbing) lanyard. Once all of the components of the particular lifeline system meet the requirements of the standard, the anchor connection is then referred to as an anchorage, and the system, as well as the rope,, is then called a “lifeline”.

Anchors used for lifeline anchorages are designed for 5,000 lb (2,300 kg) force per connecting user, and the standard permits an anchor to deform in order to absorb energy (adhesive anchors have higher design requirements because of aging loss).

The rope can be lifeline rope, which stretches to lengthen the fall distance as it absorbs energy; or static rope, which does not stretch and thus limits the fall distance, but requires the fall energy be absorbed in other devices. It is essential that the PPE be rated for Fall Arrest and PPE used with a static line includes an energy absorber. While the energy-absorbing lanyards hold in excess of 5,000 lb (2,300 kg) when fully absorbed, most limit the load during the fall to under 1,400 lb (640 kg).

Another common system is an HLL (Horizontal Life Line). These are linear anchoring devices, which allow workers to move along the whole length of the anchor, usually without needing to disconnect and fixing points of the anchorage.

It is normally essential to include energy (or shock) absorbers within HLL in addition to those within the workers’ PPE. Without such absorbers, the horizontal life line cannot deform significantly when arresting the fall. Because of the geometry of pulling across the horizontal line, this, in turn, results in large resolved forces being generated within the anchor system, sufficient to cause the failure of the anchorage. This can occur even with energy absorbers being included in the PPE of the worker.

The load and horizontal line geometry in horizontal lifelines usually creates falls in excess of the 6 ft (1.8 m) limit of the standard, limiting HLL design to standard-defined “qualified persons”. (The recognition of these basic weaknesses have resulted in most temporary “wrapped structure” HLL anchors, which were anchors made from a wire rope wrapped around a structure and its ends fastened together by wire rope clips, being replaced by fixed-point anchors or HLL systems designed by defined “qualified” persons.)

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Fall Clearance

In arresting a fall in a controlled manner, the distance required to arrest the fall must be considered. Federal OSHA limits the fall distance to 6 ft (1.8 m) unless the specific system is designed by a “qualified person” meeting the requirements of OSHA 29CFR1910.66 appendix c. The user also may not fall so as to strike protrusions or adjoining walls during the 6 ft (1.8 m) fall.

The safe fall distance is a function of the fall factor and the deployment of the “energy absorbers”. As a rule of thumb for a factor 2 fall, a fall distance of approx 6 m (20 ft) will be required. This is equivalent to 2 stories of a building. If the fall clearance is less than this the worker may strike the ground before his fall is arrested.

Administrative controls

Administrative controls are used along with other measures, but they do not physically prevent a worker from going over an edge.^[6] Examples of administrative controls include placing a safety observer or warning line near an edge, or enforcing a safety policy which trains workers and requires them to adhere to other fall protection measures, or prohibiting any un-restrained worker from approaching an edge.

Seeking a Free Consultation with one of Texas’ Houston Construction Accident Lawyers? Call the Houston Construction Accident Lawyer Reshard Alexander today at 713.766.3322.