Programming Documents for Pre-K for SA - The City of San Antonio

2) Press a second pad of putty, if needed, into place on the other side of the box
3) Press the seams together to join the two pads.
10.2.3 Steps—Restore Penetrations (general)
1) Firestop conduits, pipes, and innerducts in brick, concrete block, or concrete wall.
The requirements for firestopping are variable and are directly dependent upon:
• Fire-barrier construction
• Material passing through the firewall
• Hourly rating required
• Opening size
• Installing the materials according to manufacturer tested methods
2) Firestop floor penetrations.
Sealing of cored or sleeved openings in floor slabs containing pipes, cables, or innerducts
requires knowledge of floor thickness, floor construction, hourly fire rating required, opening
size, annular space, sleeves, and materials selection.
3) Firestopping drywall.
• Requirements for firestopping are variable and are directly dependent upon hourly rating,
opening size, annular space, sleeves, along with type and number of penetrants.
• Drywall penetrations are typically required to have firestopping installed symmetrically on
both sides of the wall to restore fire rating.
4) Firestopping all applicable penetrations.
• Inspect all cable runs for any openings made through fire-rated walls as part of structured
cabling system.
• If sleeves have been used, be sure to firestop the wall penetrations on both sides and each end
of the sleeve itself.
5) Firestop cable tray.
Penetration by a cable tray in a firewall is only permitted by The City of San Antonio with prior
approval. Generally the tray is placed against each side of the firewall and a number of
appropriately sized sleeves are installed for cables to pass through.
If a cable tray penetrates directly through firewalls, specific manufactured seal systems should
be obtained.
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