HMBD 0601 - Burlington Danes Fit-Out - Imperial College London

M&E Supervisor’s Site Visit Report
Project Burlington Danes Fit Out (HMBD0601) Job No: 074353
Date: 6 th February 2008
Report by: Ken Matthews (KJM)
Present:
Site Visit
No: 21
Had some contact with Patrick Busby during the afternoon and Brian
Dempsey of Walter Lilly accompanied KJM to visit the Roof Fume
Extract installation.
21.000 Notes
This visit was to check and clear snag/observation items within BC report No 20 that had been
reported as completed by WL.
The visit also included a general inspection of the Plastic ducting and fans installation at roof plant
level.
Any current comments relative to previous observations/snags under section 21.200 below are
shown Bold.
Explanatory Notes
There are items retained under section 21.200 for information purposes that relate to Base Build
services and effect the WL installations, such as the water pressure at basin taps.
Item 9.106. Room E497. Refers to Base build and is for ICL attention through Arup.
Other retained items that remain included for information only are where BC reported differences
between T Clarke’s construction drawings and that as actually installed with regard to power and
data points locations. Based on WL advice, these rooms/areas have been fitted out in accordance
with drawings issued by BJM and we take it therefore that BJM would check to their satisfaction.
Accordingly BC have amended all the associated items concerning this within our list below to one
common statement, e.g. as in item No 20.107.
21.100 Site Visit Observations of M & E current works
21.101 Roof Plant installation of Fume Extract Fans and associated ducting and electrics.
1. The west installation is the most advanced. All of the covered area ducting has been
installed and fans and ducting including attenuators currently in progress within the Fans
Chamber. Much activity was evident at the time of the visit with mechanical installation,
electrical 1 st fix and sealing of duct entries all happening within the West chamber.
2. Most of the East side covered plant space ducting has been installed with exception of the
150dia duct that will connect to fan R/11. The new fan sets are in position and ducting has
been installed within the chamber to fans R/9 and R/10. No other ducting, apart from the
high level discharges, has been installed at present. There was no evidence of any activity
within this chamber at the time of the visit.
3. It was noted that the NRD’s, where shown on the drawing as located with the fan chambers,
are in fact now being fitted to the ducts further back within the covered plant area. This is a
practical solution because they are more easily accessed but this is mentioned to ensure
those concerned get them shown correctly on the record drawings.
4. There are a few places on the duct runs within the roofed plant area where the duct support
spacing is up to about 3.5 – 4 metres. This exceeds guidelines for supports and the writer
has mentioned this to the site installer. On the west side duct run to R/2, with rising double
set. There are 3 on the East side. One each on duct to R/6 and R/8, and two on duct to R/7.
The latter extended distances from high level horizontal bend and at rising double sets
closer to outer wall.
5. In the cases of both fan chambers, the inverters have been mounted and interconnecting
cables have been installed and connected back to the control board.
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