Floor Flatness / Levelness

[mijowe]

Who is responsible for setting the criteria and including the criteria in the specifications/documents? The architect or the engineer or both?

 

[dik]

If the project is being run by an Architect, I would suggest that it was their responsibility since they should know what the needs of the owner/equipment are and are experts in overall building design. If the project is run by an Engineer, with little or no Architectural involvement, then this should be established by the Engineer.

Dik

 

[SrVaro]

I agree with dik. However, I have also had some clients that will specify. If a large client may want to confirm if they have general and/or project specifications.

 

[dik]

Generally discuss this with the Client and stipulate this in my General Notes:


SLAB FLATNESS

SLAB FLATNESS SHALL BE [ 20/15 | 25/20 | 35/25 | 45/35 | 65/40 | 100/50 | FM1 | FM2 | FM3 ]

U/N FLOORS SHALL HAVE A DEGREE OF FLATNESS DEFINED BY THE FACE FF/FL NUMBER THAT SHALL NOT BE LESS THAN:
20/15 MECHANICAL ROOMS, PARKING STRUCTURES, ETC.
25/20 CARPETED AREAS OF COMMERCIAL OFFICE BUILDINGS
35/25 TYPICAL WAREHOUSE FOR MODERATE/HEAVY RANDOM TRAFFIC, FACTORY, ETC.
45/35 CONSIDERED 'FLAT' TYPICAL WAREHOUSE WITH AIR PALLET USE, ICE RINKS, ETC.
65/40 CONSIDERED 'VERY FLAT'
100/50 CONSIDERED 'SUPER FLAT'

ALTERNATIVELY,

THE MAX VERTICAL DEVIATION OVER A [24 | 600] WIDTH SHALL NOT EXCEED
2.5mm (quality FM1)
3.5mm (quality FM2)
5.0mm (quality FM3)

THE MAXIMUM VERTICAL DEVIATION OVER A [10FT | 3.0M] WIDTH SHALL NOT EXCEED
3.0mm (quality FM1)
6.0mm (quality FM2)
8.0mm (quality FM3)

FLATNESS TESTING MAY COMMENCE 16 HOURS AFTER SLAB FINISHING. FLATNESS TESTING SHALL BE COMPLETED WITHIN 72 HOURS OF SLAB FINISHING

Modify as needed...

Dik