MJC PRODUCT DIMENSIONS
| References | Dimensions [mm] | Header Holes | Joist Holes | |||
|---|---|---|---|---|---|---|
| A | B | C | t | Ø4.1 | Ø4.1 | |
| MJC | 133 | 29 | 65 | 1.2 | 6 | 2 |
PRODUCT CAPACITIES - MAX INCOMING POINT LOAD
| References | Product Capacities - Max. Incoming Point Load(1) | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Qty(2) | Fasteners per MJC | Characteristic Capacities [kN] | Safe Working Loads [kN] | ||||||
| Joist 1 | Joist 2 | R1,k | R1,SWL, Long Term | ||||||
| Qty N3.75x30 | Qty N3.75x30 | I-Joists | Metal Web | I-Joists | Metal Web | ||||
| LVL | Solid Sawn | LVL | Solid Sawn | ||||||
| MJC (x4) | 4 | 4 | 4 | 16.6 | 15.3 | 12.6 | 6.9 | 6.4 | 5.3 |
| MJC (x8) | 8 | 4 | 4 | 24.9 | 22.9 | 18.9 | 10.3 | 9.6 | 7.9 |
PRODUCT CAPACITIES - MAXIMUM INCOMING REGULAR LOAD
| References | Product Capacities - Max. Incoming Regular Load(3) | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Qty(2) | Fasteners per MJC | Characteristic Capacities [kN] | Safe Working Load [kN] | ||||||
| Joist 1 | Joist 2 | R1,k | R1,SWL,Long term | Metal Web | |||||
| Qty N3.75x30 | Qty N3.75x30 | I-Joists | Metal Web | I-Joists | |||||
| LVL | Solid Sawn | LVL | Solid Sawn | ||||||
| MJC (x2) | 2 | 4 | 4 | 8.3 | 7.6 | 6.3 | 3.4 | 3.2 | 2.3 |
| MJC (x4) | 4 | 4 | 4 | 12.4 | 11.4 | 9.4 | 5.1 | 4.8 | 3.5 |
Installation
- Position the MJCs onto the first joist, ensuring that they are centred about the incoming load at 400 c/c (may be adjusted within 10mm each way).
- Secure each MJC with 4 No. 3.75 x 30mm Square Twist Nails, 2 No. fasteners into the joists top face (or for the lower flange MJC, the joists bottom face) and 2 no. fasteners into the joists front face, as shown.
- Position the second joist ensuring ends are flush and joists are parallel. Secure the joist to the MJC using 4no. 3.75 x 30mm Square Twist Nails per MJC into the top (or bottom flange) as shown.
Features
The MJC is an improved solution to the traditional filler block detail, which historically has been time consuming to fit and difficult to check if fitted or if fitted correctly. It’s simple and effective design allows one size of product to be used on any joist size – regardless of height or width.
- Quick and simple to install.
- Safely joins multiple joists together, allowing them to act as a single unit.
- Easy to see that MJC’s are installed (where as filler blocks are not visible).
- One size product fits all joist height and width combinations.
- Just one nail size required: 3.75 x 30mm square twist.
