Showing posts with label #A&A. Show all posts
Showing posts with label #A&A. Show all posts

Thursday, October 22, 2020

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.

1 month break

 was just trying to find how long before this pause. has it been 12 years? fukushima is 10 years. i prepared some lunch boxes. teared a bit....