The Nudura® standard block measures 8′ long by 18″ high. The polypropylene webs are located 8″ on centre along the block.
There are steel pins located near the top and bottom of each web, allowing the block to fold flat on itself.
Foam thickness is 2 5/8″ on each side, making the overall block width as follows:
- 4″ core: 9 1/4″
- 6″ core: 11 1/4″
- 8″ core: 13 1/4″
- 10″ core: 15 1/4″
- 12″ core: 17 1/4″
- The interlock design means there is no top or bottom, left or right direction.The top of each web is designed to accept different rebar sizes from 10M to 20M. The rebar tabs are flexible so as to accept the different sizes – once the rebar is in position, it will not move when concrete is placed.The standard block is also available unassembled, with webs that are inserted on site. The unassembled block is ideal where rebar congestion demands access to one side of the formwork.The thermal value of the block is R24.Nudura® also makes a Taper Top block where the foam thickness on one side is reduced to 3/4″ between the webs. This allows structural loads from the stud wall above to be transfered directly to the concrete wall below.However with the higher thermal performance now required by the City of Vancouver, we do not recommend this block as it leads to excessive heat lost at the ground level, exactly where the thermal gradient is the highest.
