Trench blocks laid centrally on the foundation to allow. for equal distribution of load.

Ensure full bed of mortar for the entire width and length of the trench block.

Cavity construction dimensionally accurate.

Maintain cavity width with wall ties spaced at a maximum 450mm vertically and 750mm horizontally.

Blocks to be of a minimum strength of BBA approved blocks.

Joints to be fully filled and struck off level with the blocks.

Weak mix concrete compacted into the cavity fill minimum of 375mm below DPC.

Provide a chamfered finish to the concrete falling to the outside of the property.

Ties placed no more than 450mm apart vertically and 750mm horizontally.

Mortar joints fully filled and flush pointed.

Concrete caving fill chamfered to the outside.

Bed joints fully filled to prevent moisture ingress and provide structural stability.

Concrete service lintels bearing a minimum of 150mm.

Air bricks built solid into substructure.

Below DPC facing brick to allow for external ground level change.

Mortar joints fully filled and pointed.

Follow the design for brick type in this location.

Wall finished with solid engineering bricks.