Nystrom Introduces a NEW Fire-Rated Floor Door Line

Nystrom is proud to present the new Fire-Rated Floor Door line of products, introduced May 2021. With unmatched industry sizes up to 52”x96” (increased from 48”x60”), improved interior release handles, new steel housing increasing durability and new thermal break in frame that reduces heat transfer, the line is sure to be a go-to for specifiers and contractors.

The addition of a 1-inch pan door (previously only offered in 1/8”), plus new options like mortise and recessed padlocks for additional security and rigorous testing by Intertek to NFPA standards for two- and three-hour fire ratings, nicely rounds out the complete line of floor door offerings.

Fire-Rated Architectural 1/8″ & 1″ Pan Floor Door

Nystrom fire-rated architectural pan door is the industry’s leading solution for seamless sight lines, long-lasting quality, and fire-rated safety.

Features include:

  • 2- or 3-hour fire-ratings tested to NFPA 288
  • (1/8″ has 2- or 3-hour rating, 1″ has 2-hour rating)
  • 1/8-Inch or 1-Inch pan sizes to receive a variety of flooring materials
  • 1/8″ pan in sizes up to 52″ x 96″
  • Lock options for added security
  • Improved interior release handles
  • Installs in wood or concrete applications

Fire-Rated Diamond Tread Floor Door

Nystrom fire-rated diamond tread door is the industry’s leading solution to offer larger sizes and fire-rated safety for new construction or replacement projects.

Features include:

  • 2- or 3-hour fire ratings tested to NFPA 288
  • Sizes up to 52″ x 96″
  • Lock options for added security
  • Improved interior release handles
  • Installs in wood or concrete applications

For more information on our new floor doors or on the full line, please visit nystrom.com


About Nystrom

Since 1948, Nystrom has been the go-to manufacturer of specialty building products offering a wide range of floor, roof, wall, ceiling and stair access products that create safer, more accessible buildings. Nystrom is also proud to offer hassle-free services like access to technical experts, REVIT tools for BIM, HPDs for LEED v43-part specifications and AIA continuing education courses.

Nystrom partners with BSD SpecLinkMasterSpec and BIMsmith for specification tools and are proud members of AIA, CSI, LBC, Sustainable Minds, HPDC and USGBC. Many Nystrom products meet the following standards: ADA, ASTM, Florida-Approved, FM Approved, IBC, IFC, Intertek Warnock Hersey, Miami-Dade Approved, NFPA, NYCBC, OSHA & UL.

7 Things to Consider When Specifying Expansion Joints

There are a number of things to consider when specifying expansions joints, but before we get into the specifics, let’s review the details on why building joints are so important.

Why do we Need Building Joints?

A building can move in any direction—expanding, contracting, or sliding along the X and Y axis as well as up and down along the Z axis. Joints are needed to relieve this movement where there are long expanses and where the structure would crash into another fixed or independently moving structure.

What Type of Movement is the Building Subject to and How Much?
The type of movement a building is subject to impacts the joint. A standard expansion joint system allows for a range of motion of ±25 percent of the nominal joint width. For example, a 102-mm (4-in.) nominal expansion joint system will support a gap dimension of 76 to 127 mm (3 to 5 in.). An expansion joint specified to seismic standards supports movement of ±50 percent or, in this example, a gap of 51 to 152 mm (2 to 6 in.).

It is recommended that you form a close relationship with the structural engineer to be able to share ideas and ensure you are both on the same wavelength. It is also very important to remember that nominal joint size is slotted in the building and it expands and contracts from this size. However, you are designing to minimum and maximum sizes, so your joint needs to cover the worst case.

Joint Performance Considerations

Joint systems basically close off the gaps in a building system and still allow it to move while permitting persons to move about freely inside without tripping or slipping, and also maintaining the ability to carry the floor loads that have to be moved or rolled over it. The following are seven things to consider when specifying expansion joints from both an internal and external aspect. You should choose joints that:

  1. Minimize slipping or tripping hazards over the joint.
  2. Support necessary floor loads.
  3. Maintain fire separation integrity.
  4. Maintain sound separation integrity
  5. Maintain thermal separation integrity.
  6. Maintain moisture barrier integrity.
  7. Provide acceptable continuation of the finish.

In-depth Information About Building Movement

There are various types of building movements caused by the different forces to which a building is exposed. These forces, which have a bearing on joint integrity, include:

  • Thermal expansion and contraction caused by seasonal temperature changes
  • Moisture (rain/snow/humidity)
  • Sway caused by wind
  • Differential movement (seismic events, etc.)

Be assured that all these types of movements occur in every building and you should consider if the magnitude of the movement poses a threat to the structure or integrity of the finishes used to cover the structure?

Thermal Expansion and Contraction

This is a simple linear equation: Large temperature swings and expansive materials like steel and longer lengths create conditions for expansion and contraction. Understanding the thermal sensitivity and coefficient of expansion of the structural material is key to determining movement needs. Glass and wood generally have a lower coefficient of thermal expansion than metals. Question: Will your building be exposed to the full climatic range of temperature swing due to loss of power or off-hours energy conservation? If so, then the full climatic temperature swing should be calculated.

Moisture

Porous materials are prone to expansion (swell) and contraction (shrink) from moisture (rain, vapor, etc.). The swell and evaporation of water in building materials may impact the integrity of the structure over time. Freezing water inside structural components is of particular concern in colder climates as this causes significant strain on structural materials. Parking garages are examples of movement under sidewalks and drives.  They have considerable support structures beneath the surface. Moisture is mostly prevalent in gymnasium floors as architects will manage for moisture in all other applications. Wood fibers expand when wet—they get fatter, not longer. Wood expands in direct proportion to its moisture content. Different species of wood are more or less susceptible to expansion due to the varying structure of the grain. 500 inches of wood gym floor with an expansion coefficient of .0037 and a moisture change of 3% will expand 5.55 inches.

Wind

Wind on the face of a long expanse can cause the building to move perpendicular to the thermal expansion and contraction resulting in differential motion. Some joints are not capable of moving in two directions. (Use your hands flat to the ground to demonstration motion in two directions—side to side and towards and away from you.)

Remember it is important to take into account that all of these elements: heat, moisture and wind have an effect on the amount your building moves. Therefore, the kind of joints you specify will play a key role to helping minimize tripping hazards, provide support, maintain separation integrity for fire, sound, thermal and moisture barriers, and provide an acceptable continuation of the finish.  


Nystrom expansion joints are manufactured to solve a variety of expansion joint scenarios. Custom sizing, materials, and color finishes ensure that whatever you need for your project, we’ve got you covered. Our commercial building products are shipped direct from our central manufacturing facility or from one of our strategically located stocking locations, Nystrom delivers the expansion joints you need.


About Nystrom

Since 1948, Nystrom has been the go-to manufacturer of specialty building products offering a wide range of floor, roof, wall, ceiling and stair access products that create safer, more accessible buildings. Nystrom is also proud to offer hassle-free services like access to technical experts, REVIT tools for BIM, HPDs for LEED v43-part specifications and AIA continuing education courses.

Nystrom partners with BSD SpecLinkMasterSpec and BIMsmith for specification tools and are proud members of AIA, CSI, LBC, Sustainable Minds, HPDC and USGBC. Many Nystrom products meet the following standards: ADA, ASTM, Florida-Approved, FM Approved, IBC, IFC, Intertek Warnock Hersey, Miami-Dade Approved, NFPA, NYCBC, OSHA & UL.

Nystrom introduces a new webinar CE course on building joints

Selecting, designing, detailing and specifying building joints is a complex task which can be simplified by following a logical process to first determine joint requirements, location and type. Those who are interested in learning more while earning one hour AIA HSW credit can register for an upcoming course.

Enhance building design specifications by learning principles gained through attending our free CEU course, hosted by Brad Fish, Sales Director and Tom Ray, Product Engineer. Select your date below:

If a webinar doesn’t fit your schedule, watch a narrated on-demand CEU presentation at any time. A brief test is administered before receiving credit.


About Nystrom

Since 1948 Nystrom has been the go-to manufacturer of specialty building products offering a wide range of floor, roof, wall, ceiling and stair access products that create safer, more accessible buildings. Nystrom is also proud to offer hassle-free services like access to technical experts, REVIT tools for BIM, HPDs for LEED v4, 3-part specifications and AIA continuing education courses.

Nystrom announces participation in CONSTRUCT 2020 Virtual Event as a Gold Sponsor

Minnesota-based Nystrom is proud to participate in the first ever CONSTRUCT Show virtual event! Experience live content and Q&As from your favorite speakers October 7-9, 2020. All content will be available on-demand for 3 months. Best of all, it’s FREE!

CONSTRUCT is an AEC educational program that brings together disciplines within the construction industry to help improve the future of the built environment.

Breaking down the barriers between the different players within the construction process allows for a more collaborative work environment. CONSTRUCT is the place to share the latest in standards and best practices, industry trends and emerging technologies.

Nystrom is excited to offer a live CE program during the event, One Step At A Time: Safety & Sustainability, presented by Brad Fish on Friday, October 9 at 1-2pm CST.

Brad’s presentation examines how stair treads and nosings increase stair safety for users, the coefficients of friction for different nosing options, new innovations that make treads and nosings durable and sustainable, and codes and practices that ensure proper installation.

Breaking down the barriers between the different players within the construction process allows for a more collaborative work environment. CONSTRUCT is the place to share the latest in standards and best practices, industry trends and emerging technologies.

We encourage our customers and partners to join other Architects, Designers, Specifiers, Engineers, Project Managers, Contractors, Construction Managers, Estimators, Owners, Product Representatives and Manufacturers for cutting-edge, solutions-driven learning opportunities by registering to attend the 3-day experience.

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About Nystrom

Since 1948 Nystrom has been the go-to manufacturer of specialty building products offering a wide range of floor, roof, wall, ceiling and stair access products that create safer, more accessible buildings. Nystrom is also proud to offer hassle-free services like access to technical experts, REVIT tools for BIM, HPDs for LEED v4, 3-part specifications and AIA continuing education courses.