Submission Sheet

To download the updated versions in PDF format:

Submission sheet for gravity walls
Submission sheet for reinforced walls

NOTES:

• Retaining wall to be constructed of Terraforce precast concrete blocks. (Type as indicated.)
• Blocks placed as shown and to be filled with well tamped topsoil.
• For walls retaining clay or shale, provide a free draining sand layer behind wall. Backfill to be well rammed in 150mm layers.
• Drainage outlet pipes to be provided at toe of slope and to be capped with geotextile.
• Stormwater cut-off drain is to be provided above the wall where necessary.
• Ground under all bases to be of approved granular material well compacted prior to constructing base.
• The engineer is to be notified of any variations of levels or dimensions shown.
• Minimum concrete strength for concrete foundations to be 20MPa at 28 days (to be designed accordingly).
• Shear keys with a minimum design shear stress of 0,3N/mm² are to be installed as indicated. i.e. 75 x 75 mm 1:4 cement or crusher-sand mortar or 40mm H.D.P.E Class 6 pipe sections.
• No services or trenches permitted immediately in front of the retaining wall.
• Maximum superimposed loading as indicated behind wall (surcharge).
• Concrete keys to be class 1 mortar or 15Mpa concrete.
• Please refer to the Terraforce construction manual and the guide to Terraforce L13 retaining walls for further detalls.
• The Terraforce block retaining wall design spreadsheet can also be used to assist in the design process.