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IHS I-Joist Hole Support

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Product Details

Designed to strengthen I-joists when holes are required to be cut in locations not normally permitted.

The IHS is designed to strengthen I-joists when holes are required to be cut in locations not normally permitted.

Material

Pre-galvanised mild steel

Finish

Z275 Galvanised

Features & Benefits
  • Allows holes to be cut 50mm from bearing point, which allows services to run close to external walls
  • Variable hole sizes from 150mm to a maximum width of 250mm
  • Supplied as 2 sets of 2 interlocking plates (1 set per side of I-joist) which always allows the IHS to be fitted, even when services are already in-situ
  • Helps to eliminate expensive and time consuming joist trimming for pipe runs
  • Can be used on single and double ply I-joists
Installation

Disclaimer:
Before installing this product prior approval from an engineer or I-Joist manufacturer shall be required.

  • Each IHS consists of 2 sets of 2 interlocking plates with one set required for each side of the I-joist.
  • The outer edge of the holes cut into the web of the I-joist can be a minimum of 50mm from the inner face of the blockwork.
  • Holes can be cut into the web of the I-joist before or after installation of the IHS.
  • Holes must fit within the internal aperture of the IHS.
  • Place the IHS onto the I-joist so that the top and bottom sliding flanges are aligned vertically central onto the top and bottom chords of the I-joist.
  • Open or close the IHS to the required width, ensuring that the two sections overlap by at least one row of nails (minimum overlap of 45mm).
  • Install 3.75mm nails through all round holes into the top and bottom chords of the I-joist.
  • Repeat the above steps to install plates on the other side of the I-joist, completing the installation.

Note: To ensure IHS is structurally adequate to strengthen I-joist with holes check with your I-joist supplier.

Applications
  • Designed to strengthen I-joists when holes are required to be cut in locations not normally permitted
  • Suitable for Square or Round holes
Model No. Table

Model No.

Size (mm)

Joist Height (mm)

Material & Finish

Box Qty

IHS240

248 x 236

240

Pre-galvanised

mild steel (Z275)

5 Pairs

IHS300

248 x 296

300

 

Technical Data

Model No.

Joist Size (mm)

Hanger Dimensions (mm)

Connector Holes

Fasteners

150mm Opening

250mm Opening

A

B

C

D1

D2

t

Ø 4

Triangular

Spec

Qty

Qty

Spec

IHS240

240-245

150

250

236

150

250

1.5

10

3

3.75x38mm

24

32

3.75x38mm

IHS300

300-302

150

250

296

150

250

1.5

10

3

3.75x38mm

24

32

3.75x38mm
  1. Use Simpson Strong Tie 3.75x38mm nails (N10DHHDG-R & N10D5HDG-R)
  2. Number of fasteners is per hole in joist

 

Performance Values

I-Joist Manufacturer

Joist Width (mm)

Joist Height (mm)

Model No.

Max allowable hole size with IHS (mm)

Maximum shear capacity at location of IHS (kN)

Characteristic Capacity

Single Ply

Double Ply

Dindas DJI

47

245

IHS240

150 x 250

7.25

9.66

300

IHS300

200 x 250

8.32

11.09

63

245

IHS240

150 x 250

7.91

10.55

300

IHS300

200 x 250

8.95

11.93

72

245

IHS240

150 x 250

8.28

11.04

300

IHS300

200 x 250

9.29

12.39

97

245

IHS240

150 x 250

9.24

12.32

300

IHS300

200 x 250

10.24

13.66

meyJOIST

45

240

IHS240

150 x 250

6.38

8.93

300

IHS300

200 x 250

7.68

10.75

63

240

IHS240

150 x 250

6.32

8.85

300

IHS300

200 x 250

7.59

10.62

90

240

IHS240

150 x 250

6.26

8.76

300

IHS300

200 x 250

7.49

10.48
 
Brochures & Catalogues

Brochures and Catalogues

PDF icon Flyer - IHS I-Joist Hole Support
Technical Data & Docs

Technical Data Sheets

PDF icon Technical Data Sheet - IHS

Warranty

Warranty

Inspiration

Inspiration

IHS_Application_01.jpg

IHS_Application_02.jpg

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Request a Demo/Sample*

Experience the innovation of Simpson Strong-Tie products and how we can help you build safer, stronger structures. Please fill out your details and submit the form below. We’ll be in touch to provide you a demo and/or send you samples*.

* Start typing address and select from the autocomplete.

Privacy policy

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