USG Structural Solutions

A New Level
Of Performance

USG Structural Panels are high-strength, reinforced concrete panels for use in noncombustible construction. Lighter than precast or poured concrete, USG Structural Panels install like wood sheathing and are mold-, moisture- and termite-resistant. Providing a faster, easier and more efficient way to build floors.

Click below to learn more

USG Structural Panel Applications

Physical and Mechanical PropertiesTest StandardApproximate Values Standard (Metric)
NoncombustibilityASTM E136-12 (unmodified)
CAN/ULC-S114
Passed
Passed
Surface-burning characteristics
(flame spread/smoke developed)
ASTM E84, CAN/ULC S1020/0
Weight (3/4in. [19mm] thickness)ASTM D10375.3 lb./ft.2 (26 kg/m2)
Mold resistanceASTM D3273, ASTM G21ASTM D3273, ASTM G21
Termite resistanceAWPA Standard E1-139.8
Low VOC emissionsCDHP/EHLB/Standard Method V1.1-2010aCompliant
Concentrated loadASTM E661550 lb. (2.45 kN) static 0.108 in. (2.7 mm) max. deflection @ 200 lb. (0.89 kN)
Water absorptionbASTM C1185, Sec. 5.2.3.1ASTM C1185, Sec. 5.2.3.1
Linear variation with change in moisture
(25% to 90% relative humididty)
ASTM C1185, Sec. 8<0.10%

(a) Reference Standard: California Department of Public Health CDPH/EHLB/Standard Method Version 1.1, 2010 (Emission testing method for CA Specification 01350).

(b) Absorption measured from equilibrium conditioning followed by immersion in water for 48 hours.

Fire-Resistant-Rated Systems

SystemHour RatingUL DesignHighlights
Floor/Ceiling1 hourG556
  • USG Structural Panel Concrete Subfloor
  • Floor underlayments are not part of fire-rating - design flexibility
  • 6" minimum joist depth - low profile thickness
  • Single layer of USG Sheetrock® Brand Firecode® C Core on the ceiling
Floor/Ceiling2 hourH505
  • USG Structural Panel Concrete Subfloor
  • Floor underlayments are not part of fire-rating - design flexibility
  • 8" minimum joist depth - low profile thickness
  • Single layer of USG Sheetrock® Brand UltraLight Panels Firecode® X on the ceiling
Roof/Ceiling1 hourP561
  • USG Structural Panel Concrete Roof Deck
  • No thermal barrier needed - saves time and cost
  • 6" minimum joist depth - low profile thickness
  • Steel frame trusses as an alternate - design flexbility
Roof/Ceiling2 hourP573
  • USG Structural Panel Concrete Roof Deck
  • 48" o.c. joist or truss spacing - Less material, cost savings
  • No thermal barrier needed - saves time and cost
  • Approved nail base - the only noncombustible nail base
Modular System2 hourH501
  • USG Structural Panel Concrete Subfloor
  • The only noncombustible floor/ceiling assembly for modular buildings
  • Unrestrained assembly - allows for larger open spaces
  • Insulation under floor section only - allows for the spacing of resilient channels at max. 16" o.c.
  • Floor underlayments are not part of fire-rating - design flexibility
  • Ceiling segment loaded - allows for mechanical, electrical, HVAC and suppression services
  • Primary structural elements are part of the fire-resistance design - no need for individual protection
ProductApplicationEvaluation Report
USG Structural Panel Concrete Subfloor
  • Mid-Rise – Subfloors & Walls
    • Approved Fasteners
    • Uniform Load
    • Diaphragm Shear
    • Shear Walls
  • Custom Home – Subfloors & Walls
    • Approved Fasteners
    • Uniform Load
    • Diaphragm Shear
    • Shear Walls
  • Modular – Subfloors & Walls
    • Approved Fasteners
    • Uniform Load
    • Diaphragm Shear
    • Shear Walls
  • Theater – Subfloors
    • Floor Anchorage (Seating attachment)
  • Mezzanines - Subfloors
    • Approved Fasteners
    • Uniform Load
    • Diaphragm Shear
    • Floor Anchorage (rail attachment)
PER-13067
USG Structural Panel Concrete Roof Deck
  • Mid-Rise – Low Slope & Steep Slope Roofs,  Balconies and Canopies
    • Approved Fasteners
    • Uniform Load
    • Wind Uplift
    • Diaphragm Shear
  • Custom Home – Low Slope & Steep Slope Roofs,  Balconies and Canopies
    • Approved Fasteners
    • Uniform Load
    • Diaphragm Shear
    • Wind Uplift
  • Modular – Low Slope & Steep Slope Roofs,  Balconies and Canopies
    • Approved Fasteners
    • Uniform Load
    • Diaphragm Shear
PER-14076
USG Structural Panel Concrete Foundation Wall
  • Custom Home – Basement Walls, Crawls Space, Cellars, Storm Shelters
    • Approved Fasteners
    • Shear Walls
    • Uniform Load
    • Waterproofing Membranes
PER-15092