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19-4-SHAFT-WALL-ASSEMBLY-@-3-PLY-CLT-NON-RATED-FLOOR-BTM-OF-SHAFT

Shaft Wall Assembly at Bottom of Shaft with HSS Support

Description:

  • Required to provide a rated base to the shaft without using the 3-ply CLT floor to support it; glulam beams support the concrete-filled metal deck.
  • HSS internal steel support for tall shaft wall assembly.

Purpose: Alternate option to maintain rating at base of shaft wall assembly.

Design Notes

  • Glulam beam used to support shaft wall and the concrete filled metal deck shaft floor based on char factor compliance for wall rating.
  • CLT floor outboard of shaft wall assembly to maintain shaft wall rating without CLT support.
  • HSS steel shaft wall support mounted to the glulam below.

Acoustics:

  • Shaft wall assembly estimated at STC 39-45 depending on layers of gypsum for shaft rating CLT floor 3-ply (3.5″) with 3/4″ acoustic mat and 3″ concrete = IIC 45 & STC 53.

Fire:

  • Can be used to meet any shaft wall rating requirement based on size of glulam and associated char factor.
Const.
Constructability Moderate
Fire
Fire Rated Up To 2 Hours

Related Mass Timber

Shaft Wall Assembly at Bottom of Shaft with HSS Support

Required to provide a rated base to the shaft without using the 3-ply CLT floor to support it; glulam beams support the concrete-filled metal deck. HSS internal steel support for tall shaft wall assembly.
19-4-SHAFT-WALL-ASSEMBLY-@-3-PLY-CLT-NON-RATED-FLOOR-BTM-OF-SHAFT