07.06.2015 Views

SECTION B - Derry City Council

SECTION B - Derry City Council

SECTION B - Derry City Council

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

APPENDIX 25/2: REQUIREMENTS FOR REINFORCED SOIL AND ANCHORED EARTH<br />

STRUCTURES<br />

All earth retaining walls shall have a natural looking stone finish as Acheson and Glovers Anchor<br />

Landmark Basalt or equal and approved.<br />

The earth retaining structures shown in outline in the drawings 073030/GA/14 to 21 and in elevation on<br />

drawings 073030/GA/22 and 23 shall be designed and constructed by the contractor.<br />

The retaining wall system selected for each section shall not take up an extent of land take that will cause<br />

a reduction in the area and dimensions shown on the drawings for any of the other facilities that make up<br />

the works shown on the drawings including roads, graveplots, paths, headstone foundation, buildings,<br />

access areas, planting areas and landscape areas and existing areas that are to be maintained. Where the<br />

selected retaining wall system is located adjacent to a graveplot area the contractor must demonstrate that<br />

graves can be dug immediately behind the wall without compromising the stability and safety of the wall or<br />

the excavation.<br />

Reinforced Earth Retaining Walls<br />

Reinforced Earth Retaining Walls - see Drawing No. 073030/GA/12, 13, 22 & 23 for location, layout and<br />

details of reinforced earth slopes and associated works encompassed by the “Designated Outline”<br />

Reinforced earth Retaining Walls to comply with Clause 622 of the Specification and Appendix 6/10 of the<br />

Specification.<br />

Design for reinforced earth slopes shall comply with all the relevant design guides and advice notes in the<br />

Highway Agency’s, Design Manual For Roads And Bridges DB2/05 Technical approval of Highway<br />

Structure, HA68/94 - Design Methods for the Reinforcement of Highway Slopes by Reinforced Soil and<br />

Soil Nailing Techniques. Minimum unfactored design live load surcharge to the top of the slope is 10<br />

kN/m 2 .<br />

The design shall comply with BD70/03 Strengthened / Reinforced soils and other fills for Retaining Walls<br />

and Bridge Abutments<br />

The design of the retaining walls including the facing units and reinforcing elements shall comply with BS<br />

8006-1:2010 Code of Practice for strengthened / reinforced soils and other fills.<br />

The design of the retaining walls shall comply with BSEN 14475:2006 Execution of special Geotechnical<br />

works. Reinforced Fill.<br />

225

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!