We recommend creating a simple "butt" junction as shown below and use our ZEE" brackets to hold the butt together under concrete pressure. Click on the image to download the PDF file. We do not recommend the Nudura T-block as it performs poorly under concrete pressure.
The ZEE bracket has many advantages over the T-block as shown in the illustration below:
The 8" 10" and 12" Nudura T-blocks are inherently weak and must be reinforced as shown below. The image can be clicked to download the PDF file.
Nudura supplies 90 and 45 degree corners. Custom angles are best braced with dimensional lumber and plywood as shown below. The image can be clicked to download the PDF file.
12" offset corners are easily achieved with Nudura as shown in the drawing below. This method allows for the creation of marriage lines on each side of the offset. The image can be clicked to download the PDF file.