Feasi brain exercise like a soduku

 this one is factory

large " one room" spaces. understanding more about smoke purging and compartmentation now...

if there is anything that can be convincing about a layout, it is a requirement. if one wants to do good design, one needs to understand the requirement well to support ones' case. As when a client has to choose between aesthetics and money. the clear answer is money. unless statutorily required. 

A current example is now, doing a layout of a giant factory space of about 25,800m2, 3 storeys, each story is  8600 sqm. the ideal is one big space, however, think of the urban and human emotion when one looks at this big black box. unreadable, lack of any warmth, however if we can break it up into smaller blocks this would give rise to many opportunities of roof terrace, interlocking shade and shadow... Spotted in the brief, is a requirement for Smoke control of natural means. However, in the 2018 scdf, 7,4  says engineered smoke control is needed when aggregate floor area >5000sqm. here if we keep it to one giant space, 8600 is obviously > 5000 sqm.. and if this NV requirement is necessary, it would make more sense to break the giant massing into min 2 parts.

*** sala! Instead of the regular chapter3 for compartment, compartment for warehouse has a separate table at 9.8A, and smoke requirements in 9.8B where allowable area is much larger!

eg storage warehouse w sprinkler & vehicular ramp is 9000m2, n w/o is 6000sqm

For previous moh feasi one, after i presented my option 2, from a money perspective, mine was more expensive as toilet stack is further away from the entrance, hence longer and more piping cost. and that was it. probably 3 hours worth of thinking and doing just put away in less than a minute of thought and comment.

the 3 sisters. compartment, if exemption is to be have, smoke and sprinkler have to be fulfilled more.

-note compartment can be exempted ( saving of roller shutter cost?) if:

1.sprinkler can be complied;  

2.smoke (7.4) n specific use cases compartment(9.8.3)

Feasi Discussion

Thoughts after dicussion:

1. The deciding factor is not the bulk of it ( eg Facade)itself. 

2. Placement of driveway wrt services that need access, for eg: ESS/CSR, note ht is 5.7m, cable chamber is 2m, then powergrid is 3.6m above.

3. Toilet location for sanitary stack, the closer it can be to the entrance the better, shorter pipework, save money

4. Detention Tank and location should be considered wrt lowest invert level of perimeter drain, so that it can be gravity feed. If not a pump will be needed, expensive n need maintenance.

5. Existing Hydrant location? if it is too far, pressure is not enough, a pump room may be needed

6. For steelwork expression, if smoothness is not required as per specifications, fire rated board not needed, can be vermiculite, and thus expressed.

7. For ESS, usually not steel as it needs 4hr fire rating, so RC is better.

8. As it is 3 storey, risers needed esp electrical, location usuallly at s/c or wc.

Qns ask by archi boss:

-Elevation needed surface area, after calculating unprotected opening , for costing purpose of fire-rating

-Facade wise, columns at the back

-Brief says need 9 months till completion, M&E says ESS can be done in 6 months, 1 month between plan and approval.

 How is this one different: ( on hindsight what i should have highlighted for scheme 2)

-Facade expression, master & servant, healing garden for cp

-FEA is independent, as loading is 30 tonnes the material has to be specific, if it is in a garden location, the natural pathway theme could be compromised

-location of ESS can be nearer to the accessroad

A&A

From Previous Note-Taking: 

Types of Steel

-Mild steel, stainless steel, galvanized steel

Labels:

Not "construction drawing" but " working drawing", as architect is the contractor administrator, not the QS

______________

3.9.2 SCDF:

Fire Door, in the event of an EM lock, " Electromagnetic device". activated by smoke detector or building alarm. Note Fire Alarm needs power, and there is the auto(smoke detector) or the manual type.

New Team

 started w doing construction drawings, for an existing project. a cafe layout, plans. adding gridlines. Actually it is not difficult, but not sure why i couldn't get it right.

*Post Exercise Cabinetry*

-Gridlines to be lighter, and always dimension

-Panel lines, no extra frame, note panel to be in front of structural frame

-no overlap lines

-drawer detail, back board with drawer container detached from it, and intermediate member between the front pulls. note overlap region necessary to prevent drawer from sliding backwards

*Post Exercise larger factory*

-Annotation, label ingress/egress, indicate building line above, mezzanine above, dimension of FEA

-possible for 

1)CSR to be on top of transformer & Powergrid on top of CamberChamber, but total ht would be 5.7m

-for vehicles, that are 3.0x7.5m 90 degrees reverse parking,  would need 9.0m distance behind

-lorry min clear clear height 4.2m

-generic column size 800x800

-aircon ledge is $, always aim to have min 5% of min 150sqm

-GFA efficiency good value is 70-80% and Saleable efficiency is 120-140%

-"Ancillary office": is mezzanine floor and 

-"Other Ancillary": M&E ( only rooms), lift lobby, staircase, FCC

-note mezzanine floor above 24m need to have driveway access but then efficiency will drop because of added liftlobby

New team feasi

Factory feasi

good to have:

-Ramp at 1:9

-calculate efficiency of building

-beyond 24m, cannot have mezzanine

E must have:

AC ledge to be 5% of area

E ideas:

-corridor linking to lobby, open to sky, possible to be gfa free

-"canteen" as a "fine dining space"

-sky terrace: difficulty in how to make it common

-setback from boundary line for putting sub structure and formwork; how to plaster and paint?

Comments upon looking at feasi

-FEA along external roads, have to be after drain and pavement

*note discussion w C&V, proximity of industrial stairs to be FEA does not need to  be 18m, vs residential stairs that needs to be. If sprinkled, 50% of building can have indirect discharge, but has to be 5m from building eaves.

Sharing session 23/10

 HS setback:

first 1m needs to be solid slab. we had to applied for waiver, as we have the staircase not within the first 1m, even though it is continuously rc, and roof is rc as well. perhaps this applies only for highrise, as in landed house, somehow the steps r parallel to the hs.

Draining of surface runoff:

If pavement drains direct water to planter, the soil takes some time to drain water off. usually is better to have a drain before the planter, scupper to direct the run off. There is a type of drain pipe that has a cone, that can drain off this run off.

Angle of slope:

If 15 degree slope, self cleaning,

Sample Unit Inspection:

-Door stopper usually left out, usually specified for bathroom & HS. but main door and bedroom left out.

A&A paint/coating works

-Top up of flooring, note min required 75mm concrete, rather than 50mm sand/screed. As sand/screed has no compressive, insufficient strength, usually epoxy(usually indoors, outdoors chalk) is needed but use latex, and then cracks appear.

-Note for precast, numerous joints. note joints are for movements, so don't cover/coat over, so as to allow for post tension slab flexing

-note for Powerfloat, min  substrate is 25N, remove top coat, so as to see cracks and blow holes, and patch.

-waterproofing specs should be from supplier rather than applicator.

Sharing session 16/10

 #Letterbox

-Note circulation to avoid dead end

-note recess underneath for handicap, min 230mm

-clear space between 2 back to back to be min 1200mm. as it is term as " secondary access"

#Sunken Planter

- so as not to block view, as raised planter, will have raised railing

-but note if sunken, soil has to be enough to plant .

#Lift Lobby

-Height max 3m? by TMArch? as services above head, vendor has feedback that need to have ladder to reach.

-*Telecom cable tray routing, services needs to be firmed up early, so as to avoid routing through lift lobby. If services, "services running though corridor to be in fire-rated board"

-As even if design allows for high void, if this is not taken care, lobby height has to be low, here is 2600mm.

-note size of tiles above head, more than 2.4m, no need tiles?

-Lift Motor-room if present, then last 2 floors don't need to have E&I & TMS detail.

#Self-Tapping screws vs Self drilling

-self drilling needs a pre-drilled hole

-note for self tapping, suitable depth of bit is dependent on thickness of material to drill through.

-self tapping screw

-Entirely done off-site is best: As this increases productivity, and with less people on site, less to safeguard

#Accessible Toilet

-2x2m clear so that it includes tile thickness

-note critical dimension of 750mm, rigel has a 750mm, note behind it needs a space for cistern

-note basin needs to have enough depth for leg space

-clear space outside 1.2m, if no accessible wc inside

#Lower roof (note RVO..penalty)?

-"lower roof slab ends at corridor, solution was to add a roof gutter". extend floor edge for rwdp

-key issue is how to address "roof gutter" at lower roof.

-note when u say floor edge-->parapet

-aircon ledge has a vent pipe. note location of this may overlap with location of gondolo stumps.

##Perspective##:

-If its done wrongly, so what?

-whose responsibility is it?