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SECTION B - Derry City Council

SECTION B - Derry City Council

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APPENDIX 17/3 : SURFACE FINISHES<br />

1. The required surface finish to the new concrete footways and hardstanding areas = brushed with<br />

smooth edges as detailed in Appendix 11/1.<br />

2. Permanently exposed concrete surfaces shall be to Class F3 finish to Clause 1708 and shall be<br />

protected from rust marks and stains of all kinds.<br />

3. Hidden concrete surfaces shall be to class F1 finish to Clause 1708.<br />

4. All formwork joints for exposed surfaces shall form a regular pattern agreed with the Client’s<br />

Representative with horizontal and vertical lines continuous throughout each structure and all<br />

construction joints shall coincide with these horizontal and vertical lines.<br />

5. Surface finish to the exposed soffit and internal sides of the precast concrete beams, and to the<br />

outside exposed elevation of the precast concrete edge beam, is to have a Class F3 finish. The<br />

hidden concrete face on the top surface of the precast concrete beams that will be cast into the deck<br />

shall be Class 2, “rough as cast”, to clause 1710 of the specification.<br />

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