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Table 3 references M-ratings for UL system listings
using traditional sealant technology. These type products
generally do not have as high of a movement rating
because they adhere to the penetrating item and cure
to a more hardened state.
Comparing results, systems with preformed tech-
nology, which includes pathway devices for data cables,
offer significantly more movement capability.
TABLE 3: M-ratings for traditional sealant technology.
Table includes reference information for comparison only. See listings for full system details and requirements. Source: UL.com.
Listing F Rating Product Penetrant
Movement
Y Direction Z Direction
WL 1054 1 hr FS-One Max
2" Steel Pipe/
Conduit
5% 0.25"
WL 1290 1 hr CP 606 2" Steel Pipe 5% 0.25"
WL 2244
1 hr
(with movement)
FS-One Max 2" PVC Pipe 5% 0.25"
In many cases, this is as much as 100 percent versus
only 5 percent for sealant systems.
Acoustics
Acoustics has become a trending topic in building design
and construction. Numerous sources of airborne and
structural-borne sound exist, impacting most any
building structure including data centers (Figure 7).
Aircraft noise
Traffic noise
House installations
Household appliances
Domestic noise
Workplace noise
Airborne sound
Structure-borne sound
FIGURE 7: Illustration of the various and many airborne and structure-borne sounds.
