Key Issue 1 - Chimney Flashcards
Why could the corbelled design not be left in-situ? What change had occurred to warrant extra works?
- Brickwork was deteriorating.
- Corbelled design.
Did you refer to any literature to assist in identifying any signs of failure?
BRE Good Repair Guide 3 - Repairing Damage to Brick and Block Walls.
Chimney: What was the cost and programme implication of each option?
Approx £3,000 cheaper and 1 week less for Option 3.
How did you specify the brickwork repairs and the suspended ground floor works in the tender docs?
Brickwork: Referred to Good Repair Guide 3.
Floor: Structural engineer’s design portion.
Did you not allow for any unforeseen works in the budget?
Yes £10,000 contingency, but lintels replacement and asbestos removal used this up.
How did you report to the client in terms of project costs?
Had a schedule of interim payments showing the costs to date and project budget.
Who had design responsibility for the altered chimney works?
I did (CA), as it was not part of the original Contractor’s Design Portion. [We did the design for most of the works – traditional procurement].
Chimney: Aside from cost variation, did this not require extension of time to the contract programme?
- Gained time by not doing the corbelled brick repairs.
- Other works continued while materials were ordered and installation was short (half a day).
KI 1: If there was a delay, would an EOT be warranted if requested? Why?
Yes, because it was a design change from the CA and not the contractor’s fault.
How did you cost the three different chimney rectification methods?
Asked the principal contractor to provide quotes, BCIS.
What RIBA stage was your project at when you had the chimney issue?
Stage 5 (Manufacturing and Construction).
When was the decision made to carry out the chimney support works?
3 weeks in.
How did you establish the time it would take to undertake these chimney works?
- Got a quote from the contractor who provided time implications.
- Reviewed the works involved and lead-in times for steel delivery to assess whether it seemed reasonable.
