Hangers Tab

On joist and beam designs (not on open-web truss designs) the Hangers tab is enabled. The member must be designed prior to entering the hanger design tab.

The fields above the list of hangers are important parameters that filter the hanger list. As the options are chosen, the list of sufficient hangers is updated at the bottom of the screen. The user may select a hanger from the list at any time by clicking the left hand box within the list.

RedSpec™ connects directly, in real-time, to the cloud based Simpson Hanger Engine giving you the latest information provided by Simpson Strong-Tie®

For each end of the Member, enter/select the information above the Hanger List. Details regarding each field are listed below:

Left / Right

Choose which end of the joist requires a hanger. These two buttons define which end you are entering data for.

The Member, Series, Width, Depth and Plies are noted here. They cannot be changed in the hanger window.

To change the Member, return to the Member Tab.
To change Series, Width, Depth and Plies, return to the Design Tab.

Hanger Type

Refer to the manufacturer's literature for descriptions of each type of hanger style. Choices are Top Flange, Face Mount, and Concealed Flange.

Using the drop-down, select the Hanger Type.

Header Type, Plies, Width and Depth

The hanger supports the joist, and the hanger in turn is supported by a header. Choose the appropriate material. Hanger fit and capacity depend on the header material and size.

Using the drop-downs, select the following:

Header Type
Header Plies
Header Width
Header Depth

Hanger Skew and Slope

The seat of the hanger may be skewed left or right and sloped up or down. Choose the number of degrees of skew and slope required.

Top Flange Modifications

Refer to the manufacturer's literature for descriptions of each type of top flange modifications. They can be found here: https://www.strongtie.com/products/connectors/wood-construction-connectors/technical-notes/hanger-options-matrix

Use the drop-downs to further define the details of the top-flange:

Top Flange Bend: This allows for the top flange to be bent open or closed at a specified angle for hanging on beveled bearing surfaces.
Top Flange Sloped Down: This allows for the top flange to be sloped at a specified angle to match a sloped beam.
Top Flange Offset: This allows the top flange to be offset flush with joist left or right when the joist is hanging off the end of a beam or wall.
Top Flange Length: The TF dimension of a hanger indicates how far onto the top face of the header the hanger flange will extend. Set the top-flange length to determine the maximum length allowed. By default this dimension matches the header width. The user must set this to account for other conditions. For example, where joists meet back-to-back on the same header, the top-flange length should be set to half the header width.

To the right of the Left/Right buttons hanger load information is displayed. This information is calculated on the Design Tab.

Loads

The hanger loads and their associated duration factors are determined by the joist design. These numbers are shown for reference only. To change the joist reaction, the user must return to the spans or loads tabs.

All hangers appearing in the hanger list must satisfy the down and up reaction requirements. In the hanger list, these reactions correspond to the 'Load' and 'Uplift' columns, respectively.

The load requirements include both critical and maximum values. Applied loads generally include combinations of dead and live loads, which in turn may include floor, snow, wind, etc. The maximum load is simply the greatest member reaction due to any of the considered combinations of loads. The critical load is the combination that results in the greatest design/allowable ratio. Since the allowable may vary according to the load duration factor applicable to the load combination, it is possible that a reaction less than the maximum may have a greater design/allowable ratio and thus be more critical.

The capacity of some hangers, such as face-mount hangers, depends on duration of load. Hangers must satisfy both the critical and maximum load criteria.

Bearing Length

It is not enough that the hanger is strong enough to support the joist. It is important that the joist reaction capacity is adequate in the chosen hanger. The required bearing lengths with and without web stiffeners are shown here for reference. For beams, the two numbers are the same.

In general, the required bearing length increases as joist reaction increases.

Hanger List

To chose a hanger click on the left most box. To choose another hanger, click a different box within hanger in the list.

- The final list of hangers shown may have multiple entries for seemingly the same hanger, these are alternative configurations of the same base hanger. For example, if short nails are preferred, choose "H=10dx1.5." Hangers that require other fasteners will be filtered from the list.

If a hanger is desired but no sufficient hanger is found, the hanger list appears empty. In this case, the hanger text box will show "None Found".

Clicking the "Model" column hyperlink in each row will open the Simpson hanger product page for that model in a separate browser tab.

NOTE!

The hanger selection engine MAY NOT include all allowances outlined in the manufacturer's technical bulletins. The user may clear the hanger in RedSpec™ and use the manufacturer's literature to choose a hanger.

It is the user's responsibility to account for any reductions or to take advantage of any increases specified in the hanger manufacturer's technical bulletins.

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