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ITS/MIT/HIT Engineered Wood Product Hangers

ITS/MIT/HIT

Simpson Strong-Tie® offers a dedicated range of top-flange I-joist hangers that meet the unique needs of I-joists while offering superior performance and ease of installation.

ITS

The innovative ITS sets the standard for engineered wood top-flange hangers. The ITS installs faster and uses fewer nails than any other EWP top-flange hanger. The new Strong-Grip™ seat and Funnel Flange™ features allow standard joist installation without requiring joist nails, resulting in the lowest installed cost. The Strong-Grip seat firmly secures I-joists with flange thicknesses from 1 1/8" to 1 1/2".

MIT/HIT — Positive-Angle Nailing (PAN)

PAN is specifically designed for I-joists when used with the MIT or HIT. With PAN, the nail hole material is not removed, but is formed to channel and confine the path of the nail at approximately 45°. PAN minimizes splitting of the flanges while permitting time-saving nailing from a better angle. See Top-Flange Hanger Load Tables.

Refer to joist manufacturer's literature or appropriate Simpson Strong-Tie Connector Selection Guide for actual joist sizes.

Material

  • ITS — 18 gauge; MIT, HIT — 16 gauge

Finish

  • Galvanized

Installation

  • Use all specified fasteners. Verify that the header can take the required fasteners specified in the table.
  • See product-specific installation drawings.
  • ITS — No joist nailing required for standard I-joist installation without web stiffeners. When supporting I-joists with web stiffeners or rectangular SCL member (2) 10d x 1 1/2" must be installed into optional triangle joist nail holes for standard installation values.
  • ITS — Optional triangle nail holes may be used for additional load. See Optional Nailing for Increased Uplift table. See allowable load tables. Refer to technical bulletin Alternate Uplift Options for IUS, IUT, ITT and ITS Hangers (T-OPTUPLIFT) for additional options.
  • MIT — Optional triangle nail holes may be used for increased uplift capacity. See Optional Nailing for Increased Uplift table.
  • HIT — Closed PAN nail holes may be used for increased uplift capacity. See Optional Nailing for Increased Uplift table.
  • For sloped joists up to 1/4:12 there is no reduction; between 1/4:12 and up to 1/2:12, tests show a 10% reduction in ultimate hanger strength. Local crushing of the bottom flange or excessive deflection may be limiting; check with joist manufacturer for specific limitations on bearing of this type.

Wood I-Joists:

  • Face-Mount Hanger
    When face-mount hangers are attached to I-joist headers, backer blocks must be installed to provide a nailing surface for the hanger nails. The backer blocks should be installed on both sides of the web and attached together with a minimum of 10-10d nails. The hanger nails should extend through the web. Contact the I-joist manufacturer for additional design considerations.
  • Top-Flange Hanger
    When top-flange hangers are attached to I-joist headers, a backer block must be installed to prevent the top flange from rotating under load. The backer blocks should be installed with a minimum of 10-10d nails clinched. Check with the joist manufacturer for additional design considerations.

Options

The ITS, MIT and HIT hangers have locations for optional nails if additional uplift is needed. Optional uplift nailing requires the addition of properly-secured web stiffeners. See the load tables for minimum required fasteners and allowable uplift loads.

Related Literature

Load Tables

IT Series with Various Header Applications

  1. Loads may not be increased for duration of load.
  2. Uplift loads are based on DF/SP lumber and have been increased for wind or earthquake loading with no further increase allowed. Reduce where other loads govern. For SPF/HF use 0.86 x DF/SP uplift load.
  3. ITS uplift loads are valid for all lumber species and need not be reduced for duration of load.
  4. Applies to LVL headers made primarily from Douglas Fir or Southern Pine. For LVL made primarily from Spruce Pine Fir or similar less dense veneers, use the values found in the SPF/HF column.
  5. DF I-joists include flanges made from solid sawn Douglas Fir, LVL made primarily of Douglas Fir/Southern Pine, or LSL. For flanges with thicknesses from 1 5/16" to 1 3/8", use 0.85 of the I-joist header load. For flanges with thicknesses from 1 1/8" to 1 1/4", use 0.75 of the I-joist header load.
  6. SCL (structural composite lumber) is LVL, LSL, and Parallam® PSL.
  7. Web stiffeners required for the ITS Alternate Installation when installing optional joist nails for additional uplift load.
  8. Code Values are based on DF/SP header species.
  9. I-joists with flanges less than 1 5/16" thick used in combination with hangers thinner than 14 gauge may deflect an additional 1/32 inch beyond the standard 1/8" limit.
  10. For 2 1/4" and 2 7/16" wide joists, see top flange hanger tables for allowable loads.

Parallam® is a registered trademark of Weyerhaeuser

Optional Nailing for Increased Uplift

  1. Loads are based on Doug Fir, and have been increased for wind or earthquake loading with no further increase allowed; reduce where other loads govern.
  2. Web stiffeners are required on I-joist for additional nailing.

Nailer Table

  1. Uplift loads are based on DF/SP members only. See technical bulletin T-C-NAILUPLFT for other uplift values and options.
  2. Steel nailer allowable loads apply to steel header material with thickness between 1/4" and 3/4" with minimum Fy = 36 ksi. Design of steel header by Designer.
  3. 0.157" x 5/8" long powder-actuated fastener = PDPAT-62KP. A red (level 5) or purple (level 6) load may be required to achieve specified penetration.

Code Reports

Part IAPMO UES ER ICC-ES ESR City of Los Angeles State of Florida
HITSee specific model numbers for code listings.
HIT318 ESR-2615 ESR-2523 RR25803 FL10667
HIT320 ESR-2615 ESR-2523 RR25803 FL10667
HIT322 ESR-2615 ESR-2523 RR25803 FL10667
HIT324 ESR-2615 ESR-2523 RR25803 FL10667
HIT3518 ESR-2615 ESR-2523 RR25803 FL10667
HIT3520 ESR-2615 ESR-2523 RR25803 FL10667
HIT418 ESR-2615 ESR-2523 RR25803 FL10667
HIT420 ESR-2615 ESR-2523 RR25803 FL10667
HIT422 ESR-2615 ESR-2523 RR25803 FL10667
HIT424 ESR-2615 ESR-2523 RR25803 FL10667
ITSSee specific model numbers for code listings.
ITS1.56/11.88 ESR-2615 ESR-2523 RR25803 FL10667
ITS1.56/9.25 No code listing. Please contact us for test data.
ITS1.56/9.5 ESR-2615 ESR-2523 RR25803 FL10667
ITS1.81/11.88 ESR-2615 ESR-2523 RR25803 FL10667
ITS1.81/14 ESR-2615 ESR-2523 RR25803 FL10667
ITS1.81/16 ESR-2615 ESR-2523 RR25803 FL10667
ITS1.81/9.5 ESR-2615 ESR-2523 RR25803 FL10667
ITS2.06/11.88 ESR-2615 ESR-2523 RR25803 FL10667
ITS2.06/14 ESR-2615 ESR-2523 RR25803 FL10667
ITS2.06/16 ESR-2615 ESR-2523 RR25803 FL10667
ITS2.06/9.5 ESR-2615 ESR-2523 RR25803 FL10667
ITS2.37/11.88 ESR-2615 ESR-2523 RR25803 FL10667
ITS2.37/14 ESR-2615 ESR-2523 RR25803 FL10667
ITS2.37/16 ESR-2615 ESR-2523 RR25803 FL10667
ITS2.37/9.5 ESR-2615 ESR-2523 RR25803 FL10667
ITS2.56/11.25 ESR-2615 ESR-2523 RR25803 FL10667
ITS2.56/11.88 ESR-2615 ESR-2523 RR25803 FL10667
ITS2.56/13 ESR-2615 ESR-2523 RR25803 FL10667
ITS2.56/14 ESR-2615 ESR-2523 RR25803 FL10667
ITS2.56/16 ESR-2615 ESR-2523 RR25803 FL10667
ITS2.56/9.37 ESR-2615 ESR-2523 RR25803 FL10667
ITS2.56/9.5 ESR-2615 ESR-2523 RR25803 FL10667
ITS3.56/11.25 ESR-2615 ESR-2523 RR25803 FL10667
ITS3.56/11.88 ESR-2615 ESR-2523 RR25803 FL10667
ITS3.56/13 ESR-2615 ESR-2523 RR25803 FL10667
ITS3.56/14 ESR-2615 ESR-2523 RR25803 FL10667
ITS3.56/16 ESR-2615 ESR-2523 RR25803 FL10667
ITS3.56/9.25 ESR-2615 ESR-2523 RR25803 FL10667
ITS3.56/9.37 ESR-2615 ESR-2523 RR25803 FL10667
ITS3.56/9.5 RR25803 FL10667
MITSee specific model numbers for code listings.
MIT1.81/14 ESR-2615 ESR-2523 RR25803 FL10667
MIT1.81/16 ESR-2615 ESR-2523 RR25803 FL10667
MIT11.88 ESR-2615 ESR-2523 RR25803 FL10667
MIT211.88 ESR-2615 ESR-2523 RR25803 FL10667
MIT29.5 ESR-2615 ESR-2523 RR25803 FL10667
MIT311.88 ESR-2615 ESR-2523 RR25803 FL10667
MIT311.88-2 ESR-2615 ESR-2523 RR25803 FL10667
MIT314 ESR-2615 ESR-2523 RR25803 FL10667
MIT314-2 ESR-2615 ESR-2523 RR25803 FL10667
MIT316 ESR-2615 ESR-2523 RR25803 FL10667
MIT318 ESR-2615 ESR-2523 RR25803 FL10667
MIT320 ESR-2615 ESR-2523 RR25803 FL10667
MIT3511.88 ESR-2615 ESR-2523 RR25803 FL10667
MIT3511.88-2 ESR-2615 ESR-2523 RR25803 FL10667
MIT3514 ESR-2615 ESR-2523 RR25803 FL10667
MIT3514-2 ESR-2615 ESR-2523 RR25803 FL10667
MIT3516 ESR-2615 ESR-2523 RR25803 FL10667
MIT3518 ESR-2615 ESR-2523 RR25803 FL10667
MIT3520 ESR-2615 ESR-2523 RR25803 FL10667
MIT359.5-2 ESR-2615 ESR-2523 RR25803 FL10667
MIT39.5-2 ESR-2615 ESR-2523 RR25803 FL10667
MIT4.12/11.88 ESR-2615 ESR-2523 RR25803 FL10667
MIT4.12/14 ESR-2615 ESR-2523 RR25803 FL10667
MIT4.12/9.5 ESR-2615 ESR-2523 RR25803 FL10667
MIT4.28/11.88 ESR-2615 ESR-2523 RR25803 FL10667
MIT4.28/14 ESR-2615 ESR-2523 RR25803 FL10667
MIT4.28/9.5 ESR-2615 ESR-2523 RR25803 FL10667
MIT4.75/16 ESR-2615 ESR-2523 RR25803 FL10667
MIT411.88 ESR-2615 ESR-2523 RR25803 FL10667
MIT414 ESR-2615 ESR-2523 RR25803 FL10667
MIT416 ESR-2615 ESR-2523 RR25803 FL10667
MIT418 ESR-2615 ESR-2523 RR25803 FL10667
MIT420 ESR-2615 ESR-2523 RR25803 FL10667
MIT49.5 ESR-2615 ESR-2523 RR25803 FL10667
MIT5.12/16 ESR-2615 ESR-2523 RR25803 FL10667
MIT9.5 ESR-2615 ESR-2523 RR25803 FL10667

ESR-2523 is an Index of many of Simpson Strong-Tie Stamped and Welded Cold-formed Steel Products for Wood or Cold-formed Steel Construction

Drawings

Part Orthographic Perspective
HITNone None
HIT318None None
HIT320None None
HIT322
HIT322
DWGDXF
HIT322 front view
DWG DXF
HIT322 left view
DWG DXF
HIT322 right view
DWG DXF
HIT322 top view
DWG DXF
None
HIT324None None
HIT3518None None
HIT3520None None
HIT418None None
HIT420None None
HIT422
HIT422
DWGDXF
HIT422 front view
DWG DXF
HIT422 left view
DWG DXF
HIT422 right view
DWG DXF
HIT422 top view
DWG DXF
None
HIT424
HIT424
DWGDXF
HIT424 front view
DWG DXF
HIT424 left view
DWG DXF
HIT424 right view
DWG DXF
HIT424 top view
DWG DXF
None
ITS
ITS series
DWGDXF
ITS series front view
DWG DXF
ITS series right view
DWG DXF
ITS series top vew
DWG DXF
None
ITS1.56/11.88None None
ITS1.56/9.25None None
ITS1.56/9.5None None
ITS1.81/11.88None None
ITS1.81/14None None
ITS1.81/16None None
ITS1.81/9.5None None
ITS2.06/11.88None None
ITS2.06/14None None
ITS2.06/16None None
ITS2.06/9.5None None
ITS2.37/11.88None None
ITS2.37/14None None
ITS2.37/16None None
ITS2.37/9.5None None
ITS2.56/11.25None None
ITS2.56/11.88None None
ITS2.56/13None None
ITS2.56/14None None
ITS2.56/16None None
ITS2.56/9.37None None
ITS2.56/9.5None None
ITS3.56/11.25None None
ITS3.56/11.88None None
ITS3.56/13None None
ITS3.56/14None None
ITS3.56/16None None
ITS3.56/9.25None None
ITS3.56/9.37None None
ITS3.56/9.5None None
MIT
MIT series
DWGDXF
MIT series front view
DWG DXF
MIT series left view
DWG DXF
MIT series right view
DWG DXF
MIT series top view
DWG DXF
MIT
DWG DXF
MIT Double LVL Installation
DWG DXF
MIT1.81/14None None
MIT1.81/16None None
MIT11.88None None
MIT211.88None None
MIT29.5None None
MIT311.88None None
MIT311.88-2None None
MIT314None None
MIT314-2None None
MIT316None None
MIT318None None
MIT320None None
MIT3511.88None None
MIT3511.88-2None None
MIT3514None None
MIT3514-2None None
MIT3516None None
MIT3518None None
MIT3520None None
MIT359.5-2None None
MIT39.5-2None None
MIT4.12/11.88None None
MIT4.12/14None None
MIT4.12/9.5None None
MIT4.28/11.88None None
MIT4.28/14None None
MIT4.28/9.5None None
MIT4.75/16None None
MIT411.88None None
MIT414None
MIT414
DWG DXF
MIT416None None
MIT418None None
MIT420None None
MIT49.5None None
MIT5.12/16None None
MIT9.5None None