TECHNICAL DATA

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Recommended Basement Wall Reinforcement Tables for Use of the Ivany Block

Prepared by Barber & Hoffman, Inc. Cleveland, Ohio, 2020

Recommended Specifications and Guidelines for Use of the Ivany Block

Prepared by Barber & Hoffman, Inc. Cleveland, Ohio, 2020
  • Provide one-core, Open-End Ivany Block furnished by one of the valid Ivany Block franchise holders.
    • Bottom of block shall have a ½” lip and a protrusion of the lip in the middle of the core shall be provided to hold the vertical reinforcing in the proper position.
    • Webs of block shall have two vertical slots for proper placement of horizontal reinforcing, which holds the vertical reinforcement in the proper position.
  • Provide special corner units to make the proper placement of the horizontal corner bars.
  • Unit Compressive Strength: Provide units with a minimum average net-area compressive strength of 3,000 psi, conforming to ASTM C 90.
  • Mortar: Type ‘M’ per the property specification of ASTM C270.
  • Coarse Grout: Comply with ASTM C 476, with a minimum 28-day compressive of 3,000 psi and a slump of 8 to 10 inches. Compressive strength of grout shall be determined in accordance with ASTM C 1019.
  • Reinforcement: Provide reinforcement meeting ASTM A 615, Grade 60.
  • Compressive Strength of Masonry (f’m) shall be determined by the unit strength method per Article 1.4 B.2 of TMS 602 for f’m = 2,400 psi.
  • Compressive Strength of Masonry (f’m) shall be determined by prism test method per Article 1.4 B.3 of TMS 602 for f’m = 2,800 psi. Prism tests shall be in accordance with ASTM C 1314.
  • Walls shall be constructed in accordance with “Specification for Masonry Structures” TMS 602.
  • Special inspections shall be as required by the building code and “Specification for Masonry Structures” TMS 602.

Recommended Basement Wall Reinforcement Tables

  • Tables have been prepared based on “Building Code Requirements for Masonry Structures” TMS 402-16.
  • See specifications for material strength and other requirements.
  • Tables are based on at-rest earth pressures as listed, which corresponds to Lateral Soil Load Table 1610.1 of the International Building Code (IBC-2015) and Soil Classes and Design Lateral Soil Pressures indicated in Sections R404 and R405 of the International Residential Code (IRC-2018).
  • Backfill shall be sloped away from the wall. The tables include an equivalent surcharge of one-foot of soil.
  • Tables are prepared without consideration of hydrostatic pressure. Adequate drainage shall be provided to prohibit the any hydrostatic pressure.
  • All reinforcement shall be continuous. Splices shall be in accordance with the building code or TMS 402.
  • Follow the National Concrete Masonry Association (NCMA) TEK 10-3 “Control Joints for Concrete Masonry Walls – Alternative Engineered Method” for spacing of control joints.
  • Recommended minimum reinforcement:
    • 8” Ivany Block #4 @ 32”o.c. Vertical and #3 @ 16”o.c. Horizontal
    • 12” Ivany Block #4 @ 24”o.c. Vertical and #4 @ 24”o.c. Horizontal
    • 16” Ivany Block #4 @ 16”o.c. Vertical and #4 @ 16”o.c. Horizontal
  • Design depth of vertical reinforcement (d), measured from the outside face of Ivany Block:
    • 8” Ivany Block 5 1/8”
    • 12” Ivany Block 8 5/8”
    • 16” Ivany Block 12 3/8”
  • Walls are designed to be supported at the top and bottom prior to backfilling.
  • Shaded values indicate f’m of 2,800 psi, see Specifications for prism testing.

Allowable Compression Strength Table Notes

  • Tables have been prepared based on “Building Code Requirements for Masonry Structures” TMS 402-16.
  • See specifications for material strength and other requirements.
  • Values provided are for pure compression including an eccentricity equal to 10% of the nominal wall thickness.
  • Flexural stresses due to lateral loads (soil pressure / wind) have not been included in these tables.

Illustrations and Notes about the Ivany® Block

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