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.