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Recomended Basement Wall Reinforcement Tables for Use of the Ivany® Block

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

8" Ivany Block Wall
8” Ivany Block Wall - 30 psf/ft
Height Vertical Reinforcement Horizontal Reinforcement
5'-4" #4 @ 32" #3 @ 16"
6'-0" #4 @ 32" #3 @ 16"
6'-8" #4 @ 32" #3 @ 16"
7'-4" #4 @ 24" #3 @ 16"
8'-0" #4 @ 24" #3 @ 16"
12'-8" #5 @ 8" #3 @ 16"
8” Ivany Block Wall - 45 psf/ft
Height Vertical Reinforcement Horizontal Reinforcement
5'-4" #4 @ 32" #3 @ 16"
6'-0" #4 @ 32" #3 @ 16"
6'-8" #4 @ 24" #3 @ 16"
10'-8" #6 @ 8" #3 @ 16"
8” Ivany Block Wall - 60 psf/ft
Height Vertical Reinforcement Horizontal Reinforcement
5'-4" #4 @ 32" #3 @ 16"
10'-8" #6 @ 8" #3 @ 16"
Allowable Compressive Strength
Height Allowable Compressive Strength
8' 542 psi
9' 526 psi
10' 509 psi
17' 337 psi
12” Ivany Block Wall - 30 psf/ft
Height Vertical Reinforcement Horizontal Reinforcement
6'-8" #4 @ 24" #4 @ 24"
7'-4" #4 @ 24" #4 @ 24"
8'-0" #4 @ 24" #4 @ 24"
8'-8" #4 @ 24" #4 @ 24"
9'-4" #4 @ 24" #4 @ 24"
10'-0" #4 @ 16" #4 @ 24"
10'-8" #4 @ 16" #4 @ 24"
11'-4" #5 @ 16" #4 @ 24"
12'-0" #5 @ 16" #4 @ 24"
12'-8" #5 @ 16" #4 @ 24"
13'-4" #6 @ 16" #4 @ 24"
14'-0" #6 @ 16" #4 @ 24"
14'-8" #6 @ 16" #4 @ 24"
15'-4" #7 @ 16" #4 @ 24"
16'-0" #7 @ 16" #4 @ 24"
16'-8" #6 @ 8" #4 @ 24"
17'-4" #7 @ 8" #4 @ 24"
18'-0" #7 @ 8" #4 @ 24"
18'-8" #7 @ 8" #4 @ 24"
12” Ivany Block Wall - 45 psf/ft
Height Vertical Reinforcement Horizontal Reinforcement
6'-8" #4 @ 24" #4 @ 24"
7'-4" #4 @ 24" #4 @ 24"
8'-0" #4 @ 24" #4 @ 24"
8'-8" #4 @ 24" #4 @ 24"
9'-4" #5 @ 24" #4 @ 24"
10'-0" #5 @ 16" #4 @ 24"
10'-8" #5 @ 16" #4 @ 24"
11'-4" #5 @ 16" #4 @ 24"
12'-0" #5 @ 16" #4 @ 24"
12'-8" #6 @ 16" #4 @ 24"
13'-4" #6 @ 16" #4 @ 24"
14'-0" #6 @ 16" #4 @ 24"
14'-8" #6 @ 8" #4 @ 24"
15'-4" #7 @ 8" #4 @ 24"
16'-0" #7 @ 8" #4 @ 24"
16'-8" #7 @ 8" #4 @ 24"
17'-4" #6 @ 8" #4 @ 24"
18'-0" #7 @ 8" #4 @ 24"
18'-8" #7 @ 8" #4 @ 24"
12” Ivany Block Wall - 60 psf/ft
Height Vertical Reinforcement Horizontal Reinforcement
6'-8" #4 @ 24" #4 @ 24"
7'-4" #4 @ 24" #4 @ 24"
8'-0" #4 @ 24" #4 @ 24"
8'-8" #4 @ 24" #4 @ 24"
9'-4" #5 @ 24" #4 @ 24"
10'-0" #5 @ 16" #4 @ 24"
10'-8" #5 @ 16" #4 @ 24"
11'-4" #6 @ 16" #4 @ 24"
12'-0" #6 @ 16" #4 @ 24"
12'-8" #6 @ 8" #4 @ 24"
13'-4" #7 @ 8" #4 @ 24"
14'-0" #7 @ 8" #4 @ 24"
14'-8" #7 @ 8" #4 @ 24"
12” Ivany Block Wall - Allowable Compressive Strength
Height Allowable Compressive Strength
12' 544 psi
13' 534 psi
14' 523 psi
15' 512 psi
16' 500 psi
17' 487 psi
18' 473 psi
19' 459 psi
20' 444 psi
21' 428 psi
22' 411 psi
23' 393 psi
24' 375 psi
25' 356 psi
16” Ivany Block Wall - 30 psf/ft
Height Vertical Reinforcement Horizontal Reinforcement
9'-4" #4 @ 16" #4 @ 16"
10'-0" #4 @ 16" #4 @ 16"
10'-8" #4 @ 16" #4 @ 16"
11'-4" #4 @ 16" #4 @ 16"
12'-0" #4 @ 16" #4 @ 16"
12'-8" #5 @ 16" #4 @ 16"
13'-4" #5 @ 16" #4 @ 16"
14'-0" #5 @ 16" #4 @ 16"
14'-8" #5 @ 16" #4 @ 16"
15'-4" #7 @ 16" #4 @ 16"
16'-0" #6 @ 16" #4 @ 16"
16'-8" #6 @ 8" #4 @ 16"
17'-4" #7 @ 8" #4 @ 16"
18'-0" #5 @ 8" #4 @ 16"
18'-8" #7 @ 8" #4 @ 16"
19'-4" #7 @ 8" #4 @ 16"
20'-0" #7 @ 8" #4 @ 16"
20'-8" #6 @ 8" #4 @ 16"
21'-4" #7 @ 8" #4 @ 16"
22'-0" #7 @ 8" #4 @ 16"
22'-8" #7 @ 8" #4 @ 16"
23'-4" #7 @ 8" #4 @ 16"
16” Ivany Block Wall - 45 psf/ft
Height Vertical Reinforcement Horizontal Reinforcement
9'-4" #4 @ 16" #4 @ 16"
10'-0" #6 @ 24" #4 @ 16"
10'-8" #6 @ 24" #4 @ 16"
11'-4" #6 @ 24" #4 @ 16"
12'-0" #6 @ 24" #4 @ 16"
12'-8" #5 @ 16" #4 @ 16"
13'-4" #5 @ 16" #4 @ 16"
14'-0" #5 @ 16" #4 @ 16"
14'-8" #6 @ 16" #4 @ 16"
15'-4" #7 @ 16" #4 @ 16"
16'-0" #7 @ 16" #4 @ 16"
16'-8" #6 @ 8" #4 @ 16"
17'-4" #7 @ 8" #4 @ 16"
18'-0" #5 @ 8" #4 @ 16"
18'-8" #7 @ 8" #4 @ 16"
19'-4" #7 @ 8" #4 @ 16"
20'-0" #7 @ 8" #4 @ 16"
16” Ivany Block Wall - 60 psf/ft
Height Vertical Reinforcement Horizontal Reinforcement
9'-4" #4 @ 16" #4 @ 16"
10'-0" #6 @ 24" #4 @ 16"
10'-8" #6 @ 24" #4 @ 16"
11'-4" #6 @ 24" #4 @ 16"
12'-0" #6 @ 24" #4 @ 16"
12'-8" #6 @ 16" #4 @ 16"
13'-4" #7 @ 16" #4 @ 16"
14'-0" #7 @ 16" #4 @ 16"
14'-8" #7 @ 8" #4 @ 16"
15'-4" #6 @ 8" #4 @ 16"
16'-0" #5 @ 8" #4 @ 16"
17'-4" #7 @ 8" #4 @ 16"
18'-0" #7 @ 8" #4 @ 16"
16” Ivany Block Wall - Allowable Compressive Strength
Height Allowable Compressive Strength
16' 545 psi
17' 537 psi
18' 530 psi
19' 522 psi
20' 513 psi
21' 504 psi
22' 495 psi
23' 485 psi
24' 475 psi
25' 465 psi
26' 453 psi
27' 442 psi
28' 430 psi
29' 418 psi
30' 405 psi
31' 392 psi
32' 378 psi
33' 364 psi

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 licensees.
    • 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 Reinforcing Tables Notes

  • 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 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) has not been included in these tables.

Illustrations and Notes about the Ivany® Block system

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sketch-ivany-blocks

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