Carpark

The setup consist of 1 interconnected carpark, but 2 portions, namely sprinkled n unsprinkled.
The sprinkled came about as a result of having a commercial component placed adjacent to it, n for compartmentation for fscf, would have to be MV, hence sprinkled.

The sensitivity to F-F heights is crucial as there are connecting links from the landscape deck to the residential level, hence any further increase, would result in longer ramps, etc, explaning to PM why wasn't this captured, etc.

The hdb requirement for CP f-f is 2.8m, and for future ready is 3.3m. clear rqmt for driveway is 2.2m, so services like M&E, structure needs to clearly communicated . some issues along the way

-Column structure, basic 2 columns along each lot, vs 1 longer column, but beam depth would change for the uppermost level. current depth is 500mm, roof would have to be changed to 1000m
-it was a close shave for the sprinkler, as we will need localised sprinklers area to be with shallower beam

-Future ready rqmt clear height is 2.6m, so for the required lots area, this area should have a higher headroom

**-if area >2000sqm, smoke purging or smoke vents is needed to discharge smoke. Our problem came about for the depth of the fans. The logic to understand, smoke purging system needs a ductless jet fan and also duct mv. It seems the jet fan sucks in, and duct throws it out. These purging systems are deep, for eg 750mm, and would totally throw a 2.8m F-F provision off.
Terms are:

sprk MSCP MV fan - cater the fan within 3.5m between deck. UPC to confirm

sprk MSCP MV duct - cater duct depth such that 2.2m headroom is maintained. Check the routing against beam crossing. Ducts not allowed to penetrate.

sprk MSCP jet fan - relocate jetfan to residual area with <2m headroom and minimise omission of spare carpark lots. Jetfan can be positioned better without having columns blocking air flow (KTP's alt MSCP structural system). To consider the benefit in reference to omission of spare lots.

Alt MSCP structure design - 150mm from deck 3 can be given to KTP to mitigate their new beam depth at MSCP roof garden. min 2.3m headroom for HDB structure requirement. KTP to study the structure again to avoid raising another 150mm of roof garden level, in consideration of
- commercial heights
- staircase risers
- various ramps linkbridges length to resi void decks
- potential further overlooking issue, security/privacy issue
- WVG further level mitigation to 120.00

UPC req on sanitary pipe = 600mm min from FFL and 300-400mm depth for S trap. To consider having the vertical stack before crossing any beam to avoid headroom issue.

sprk MSCP - sprinkler main pipe 100mm dia is allowed to penetrate beam at the highest deck soffit with min one-third span interval (KTP requirement). UPC and KTP to coordinate fully on this. Sprinkler pipes does not cross any beams for typ floors (KTP's alt structural system)

-Any change in height for mscp, wld affect the length of ramp internally to reach.to note turning radius and also lots that may need to be remove to cater for this additional length

-thoughts on mscp:
- if <2000sqm, smoke vent ok
-if >5000sqm, smoke purging system. This then depends on whether it is sprkl or non-sprinkl.
if sprinkl. This smps consist of MV fan(input), and MV duct(output), and also a jet fan
. If natural vent, smps not needed.