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Work & Safety Boot Features

When deciding what type Work and Safety footwear you need, it is helpful to have some knowledge of footwear construction, the features of work boots, protection and safety standards and ASTM Ratings and. Here is some information that we hope will assist you in purchasing work and safety footwear:

Footwear Construction

Sole Material

The outsole of a shoe is the foundation upon which all of the features are built. The outsole determines the degree of flexibility of the shoe, durability, slip resistance, traction, insulation and most importantly, comfort.

• Rubber (RBR) is a widely used material for shoe soles. Rubber can withstand heat conditions up to 570°F. It also comes in a variety of weights, including dense (more solid) and lightweight. This type of sole is designed with high abrasion specifications to allow for slip resistance. Usually, rubber soles have Nitrile or Neoprene added to the formula to allow for resistance to oil and chemical absorption. 

• Polyurethane (PU) soles are composed of closed cell blown material and have a resistance to oils and chemicals (except alkalis). This material can be designed to have a high abrasion component to ensure the longevity of the shoes. This sole can withstand heat conditions between 250 - 300ºF and can be produced with slip resistant characteristics.

• Thermoplastic Urethane (TPU) provides excellent abrasion and resistance to oil and chemicals in addition to wearing well. While this shoe also offers a fair amount of slip resistance, it has a lower heat resistance than other materials.

• Ethyl Vinyl Acetate (EVA) is made of an open cell plastic-based material that is extremely lightweight. Its known for its cushioning properties and is commonly used to create a midsole. While this style can provide oil and chemical resistance, it has poor abrasion resistance. Because of that, EVA is typically combined with a PU or RBR sole.

• Polyvinyl Chloride (PVC) is a plastic vinyl-based material that can be used alone, or added to rubber to provide better abrasion resistance. It has excellent abrasion resistance and cushioning but is prone to cracking in cold temperatures and doesn’t more slip resistant properties.

Features

A number of symbols have been created to let you know the special features of work footwear.

Value Added Symbols

Non Metalic Work Shoes Icon This symbol signifies a non-metallic upper. If a shoe has this symbol, it means that it features eyelets on the upper portion of the shoe that are made of nylon or plastic, hidden or non-existent. This helps to reduce the chance of marking or scratching work surfaces. Also utilized on security friendly footwear.

Security Friendly IconThis symbol signifies that the shoe or boot is security friendly. This means the shoe has a composite toe and eyelets that are 100% non-metallic. Typically will not activate security-screening devices.

Insulated IconThis symbol means that the shoe is insulated. Contains an insulating lining such as Thinsulate which is designed to keep your feet warm in cold conditions. The higher the gram rating for the shoe, the warmer your feet will stay.

 Waterproof iconThis symbol tells you that the shoes are completely waterproof. This will allow your feet to stay dry in most wet conditions due to membranes such as Gore-Tex.

Lug Toe IconThis symbol indicates that the style of the shoe or boot features a lug sole design that improves traction outdoors in different environments such as mud, snow and grass.

Broad Toe Icon This symbol tells you that the shoe features a protective toe cap that is larger than a standard toe cap. This provides extra room for your toes to bend, move and flex while you walk and stand.

ASTM Icons

Electrical Hazard Icon This symbol means electrical hazard. Shoes with this symbol are designed to provide secondary protection in case of incidental contact with live electrical circuits. These shoes meet F2413-11 Section 5.5 requirements and are tested to resist the application of 18,000 volts at 60 hertz for 1 minute with no current flow in excess of 1 milliampere under dry conditions. These shoes should not be worn in explosive or hazardous areas where conductive footwear is required.

Static Dissipating IconThis symbol stands for static dissipating. It also may be shown as SD. Shoes that feature this symbol are constructed to reduce the amount of static electricity that accumulates. This is done by conducting the body charge to a properly grounded flooring system. These shoes must have a lower limit of electrical resistance of 1 megohm and an upper limit of 100 megohms. These shoes meet F2413-11 section 5.6 requirements. Cleaning and Care of ESD Work Shoes.

Puncture Proof IconThis symbol means that the shoe is puncture resistant. If a shoe is puncture resistant, it will contain a stainless steel or composite textile midsole. This structure is designed to reduce the hazards of puncture wounds that are caused by sharp objects that could penetrate the sole. These shoes meet the F2413-11 Section 5.6 requirements.

Steel Toe Icon This symbol means that the shoe has a steel toe. A steel toe means that the boot or shoe exceeds the ASTM                 F2413-11 I/75 and C/75 standards, which you can read about in the section below.

Composite Toe Icon This symbol indicates that the boot or shoe has a composite safety toe. This means that the toe is non-metallic and undetectable when used in a security environment. These types of shoes are also rated I/75 and C/75.

ASTM Icon This symbol indicates the shoe or boot has conductive protective properties in accordance with ATSM standards.

Chemical Resistant Icon This symbol means that the leather is chemical resistant.

Slip Resistant Icon This symbol represents a slip resistant sole. The outsole on these shoes and boots are designed with slip resistant compounds to reduce the risk of slips and falls in the workplace.

Metatarsal Guard Icon This symbol means that there is an internal metatarsal guard that provides superior flexibility and less bulk for unrestricted movement.

Shock Absorb Icon This symbol indicates that a cushion comfort insole is inside the shoe to provide better shock absorption.

Toe Protection Icon This symbol shows that there is advanced protection in the toe in addition to advanced performance safety. It’s lightweight, won’t conduct electricity, and resists extreme temperatures while remaining an ASTM I/75 C/75 rating.

Heat Resistant Icon This means that the outsole of the shoe or boot is heat resistant. This will prevent cracking and charring of the sole, increasing the longevity of your shoe or boot. This feature will also provide protection during brief periods of direct contact to heat up to 500°F. If prolonged heat contact occurs, the protective capabilities of this feature aren’t as effective.

Zipper Inside Icon This symbol indicates there is an inside zipper in this boot or shoe.

ASTM Standards

In order to ensure safety, standards for work boots and shoes have been developed. The ASTM F2413-11 standard covers the minimum requirements for design, performance, testing and classification of protective footwear. It includes the seven footwear protection standards that are described below. In order to comply with the standards, footwear must be tested and certified by a third party independent testing agency, and the standards have to be clearly and legibly labeled inside the footwear. The labels in the shoes look similar to this:

ASTM Label Icon

The top line of shows the ASTM standard number (F2413) and the year of issuance (-11). Typically, this information won’t change. If it does, it will only be the year of issuance.

The second line clarifies whether it’s a male or female (M or F) and that it’s certified for impact and compression (I/75 and C/75).  This information typically doesn’t change from style to style except for the gender.

The third (and potentially fourth) lines are there to describe additional features that the shoes or boots may have. This information will change from style to style and communicates the features of a shoe or boot.

Protection Standards (ASTM)

Impact (I/75)

Identifies protection against impact hazards. The test for this standard involves dropping a 50 pound weight from a height of 18” (75 ft. lbf.) onto 3 test samples. A minimum 0.5-inch clearance (men’s) and 0.468 (women’s) must be maintained on all 3 test samples. These shoes or boots will also meet the compression standards below.

Compression (C/75)

Identifies protection against rolling or compression hazards. 2,500 lbs. of force is applied to 3 test samples. Minimum clearance as above must be maintained on all 3 samples. This footwear must also meet the above impact requirements.

Metatarsal (MT 75)

Identifies footwear designed to protect the top of the foot from impacts. A 50 lb. weight is dropped from a height of 18” on 3 test samples. A minimum 1-inch clearance (men’s) and .937 inch (women’s) must be maintained on all 3 test samples. Footwear must first meet the above impact and compression tests for the toecap.

Conductive (CD)

Identifies footwear intended to provide protection against hazards from static electricity buildup and reduce the possibility of ignition of explosive or volatile chemicals. This footwear is tested to demonstrate resistance between 0 and 500,000 ohms. Please Note: Conductive footwear is not intended to be worn if working near open electrical circuits.

Electrical Hazard (EH)

Identifies footwear constructed to provide a secondary level of protection against incidental contact with live electrical circuits. Three specimens are tested to resist the application of 18,000 volts at 60 hertz for 1 minute with no current flow in excess of 1 milliampere under dry conditions. All 3 specimens must pass the minimum test requirements.

Static Dissipative (SD)

Identifies footwear designed to protect against hazards that may exist due to excessively low footwear resistance while maintaining a sufficiently high level of resistance to reduce the possibility of electrical shock. This footwear must have a lower limit of electrical resistance of 1 megohm and an upper limit of 100 megohms.

Puncture Resisting (PR)

Identifies footwear designed and constructed with a puncture resistance feature between the insole and outsole as a permanent part of the footwear. This footwear must have a minimum puncture resistance of 270 lbs. of force.

All of the above shoe and boot components are an integral and permanent part of the safety footwear construction and selection. Other devices that serve as temporary protection do not conform to ASTM standards. if you have any questions about work or safety shoes and boots please feel free to email us at online@rogansshoes.com or call us toll free at 1-800-976-4267.

 

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