Thermal Analysis Effective R-Value Calculations for Omni Block 8 X 8 X16 Insulated Concrete Block Wall System March 2013 Revised May 2017

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Thermal Analysis Effective R-Value Calculations for Omni Block Insulated Concrete Block Walls March 2013 Revised May 2017

Thermal Analysis Effective R-Value Calculations for Omni Block 8 x 8 x16 Insulated Concrete Block Wall System

March 2013 Revised May 2017

Facts According to the National Concrete Masonry Association (NCMA) the tested R-Value for a standard 8x8x16 concrete masonry unit (CMU) is 2.2 at 105 lb. density.

The tested solid grouted R-Value for the same unit is 1.7 proving that air is a better insulator than grout (which is a form of concrete).

Expanded Polystyrene (EPS) has a tested R-Value of 4 per inch at a 1.3 lb. density, which is significantly higher than air.

Asssumptions Improving the CMU design and utilizing an insulating material within the CMU would greatly increase the R-Value of the CMU.

Findings Omni Block consists of a unique block design that utilizes an additional middle lineal wall, which is parallel to the interior and exterior block face shells.

The additional middle lineal wall allows the block design to include offset and constricted cross webs (see drawings within).

The three face shells and offset and constricted cross webs create unique cells (or cores) that house specifically molded EPS insulation inserts.

Both layers of EPS inserts protrude below the block and the interior layer over laps from block-to- block, thus thermally protecting all horizontal and vertical mortar joints.

Each layer of EPS inserts has a less than a 10% continuous insulation correction factor.

It is this combination of an additional middle lineal wall, offset and constricted cross webs, and insulating cores that provide significantly higher R-values than standard CMU (see Table within).

May 2017 Revision Graphics only were added; no change to calculations or results.

- 2 - Block Face Shell Configuration Section

Face Shell - Standard nominally dimensioned 8” x 8” x 16” CMU consists of two (2) face shells.

I. Determine cubic inches of two (2) standard nominal 8” CMU face shells (see green shaded areas): Given: 155/8 = width of CMU face shell, in inches 75/8 = height of CMU face shell, in inches 11/4 = depth of CMU face shell, in inches 2 = quantity of CMU face shells Then: 15.625 w x 7.625 h x 1.25 d = 148.93 cubic inches per face shell 148.93 x 2 = 297.86 total cubic inches of two standard nominal 8” CMU face shells

Standard CMU schematics 15.625 390.00 390.00 face shell 1 32.00 36.00 1.25 32.00 36.00 190.00 126.00 118.00 5.125 190.00 126.00 118.00 7.625 36.00

face shell 2 32.00 1.25 36.00 32.00

R0.50TRUE R16.00 TRUE R16.00

1.50 5.5625 1.50 5.5625 1.50 32.00 150.00 26.00 150.00 32.00

32.00 150.00 26.00 150.00 32.00 190.00 7.625 190.00

VOLUME = 451.08 451.08 36.00 142.00 34.00 142.00 36.00 CU.IN. VOLUME = 451.08 451.08 DENSITY = 0.08 0.08 36.00 142.00 34.00 142.00 36.00 CU.IN. lb/CU.IN DENSITY = 0.08 0.08 lb/CU.IN

WEIGHT: THE INFORMATION CONTAINED IN THIS POIDS: 36.09 LBS DRAWING IS THE SOLE PROPERTYOF THE BESSER COMPANY. REPRODUCTION IN PART MASCOUCHE, WEIGHT: MODEL NO.: THE INFORMATIONSUIVANT/NEXT CONTAINED IN ASS'Y.: THIS OR WHOLE WITHOUT WRITTEN PERMISSION POIDS: MODELE36.09 NO.:LBS DRAWING IS THE SOLE PROPERTYOF THE FROM THE BESSER COMPANY IS PROHIBITED. QUEBEC - CA BESSER COMPANY. REPRODUCTION IN PART MASCOUCHE, SUIVANT/NEXTCODE ASS'Y.: TRAIT. THERM.:OR WHOLE WITHOUTCODE WRITTEN SURFACE: PERMISSION L'INFORMATION CONTENUE DANS CE DESSIN MODEL NO.: EST LA PROPRIETE DE BESSER. LA MODELE NO.: HEAT TREAT FROM THE BESSERSURFACE COMPANY COAT IS PROHIBITED. CODE: QUEBEC - CA CODE: REPRODUCTION COMPLETE OU EN PARTIE L'INFORMATION CONTENUE DANS CE DESSIN SANS PERMISSIONECRITE DE BESSER EST CODE TRAIT. THERM.: CODE SURFACE:TOLERANCE SI NON SPECIFIEE: INTERDITE. 20cm. STANDARD UNIT, - P.P.B.E. - Face Shell - The nominally dimensioned Omni Block 8” stretcherHEAT TREATunit consistsSURFACE COATTOLERANCE CODE:of UNLESSthreeEST LA OTHERWISEPROPRIETE DE(3) BESSER.SPECIFIED: LAface shells. CODE: REPRODUCTION COMPLETE OU EN PARTIE NOM RECTANGULAR CORE, STREIGHT BOTTOM. -DECIMAL/DECIMALE:SANS PERMISSIONECRITE .XXXX"= DE.01mm, BESSER EST NAME DATE TOLERANCE SI NON SPECIFIEE: INTERDITE. 20cm. STANDARD UNIT, - P.P.B.E. - TOLERANCE UNLESS OTHERWISE SPECIFIED: .XXX"= .10mm, .XX"= .3mm, .X"= .6mm DESSINE: -ANGLULAR/ANGULAIRE: NOM1 DATE DRAWN:RECTANGULARJ.P. 25.01.2005. CORE, STREIGHT BOTTOM. -DECIMAL/DECIMALE: .XXXX"= .01mm, NAME FORMAT: NO. DESSIN.: SHEET 1 OF 1 REV.: .XXX"= .10mm, .XX"= .3mm, .X"= .6mm-HOLE LAYOUT/POSITION PERCAGE: .8mm VERIFIE: DESSINE: CHK'D.: SIZE: DWG. NO.: PAGE 1 DE 1 -ANGLULAR/ANGULAIRE: 1 DRAWN: J.P. 25.01.2005. II. Determine cubic inches of three (3) Omni Block 8” stretcher face shellsSCALE: (see orange shadedAPPROUVE:FORMAT: NO. areas): DESSIN.: SHEET 1 OF 1 REV.: -HOLE LAYOUT/POSITION PERCAGE:ECHELLE: .8mm 1:3VERIFIE: APP'D.: B 16-03-4136 CHK'D.: SIZE: DWG. NO.: PAGE 1 DE 1 SCALE: APPROUVE: Given: ECHELLE: 1:3 APP'D.: B 16-03-4136 155/8 = width of Omni Block face shell, in inches 75/8 = height of Omni Block face shell, in inches 11/4 = depth of Omni Block face shell, in inches 3 = quantity of Omni Block face shells Then: 15.625 w x 7.625 h x 1.25 d = 148.93 cubic inches per face shell 148.93 x 3 = 446.79 total cubic inches of three Omni Block nominal 8” stretcher face shells

- 3 - Block Face Shell Configuration Section - continued

Omni block stretcher schematics SIMILAR TO: 15.625 3.438 15.625 3.438

cC 2.094

R0.750 face shell 1 1.250 1.375 1.25

A A Rr0.4380.438 2.250 2.500 TYP. 2.50 1.500 7.625 R0.250 middle face shell 0.156 1.375 1.125 7.625 bB bB 1.125 1.250 1.500 1.50

face shell 2 1.375 1.250 1.25 cC Section c-c SECTION C-C

3.05 1.50 6.525 1.50 3.05 1.50 12.625 1.50 3.055 1.516 6.484 1.516 3.055 1.550 12.526 1.550 7.625 7.625

SECTION A-A SECTION B-B

2.930 1.766 6.234 1.766 2.930 1.624 12.377 1.624 Section a-a Section b-b

AS PER DRAWING A019018-800 BY REID-FLEMING INDUSTRIAL LLC WEIGHT: 42.76 THE INFORMATION CONTAINED IN THIS The objective of this section is to calculate the additional thermal resistancePOIDS: (or delayed thermalLBS. DRAWING IS THE SOLEconductance) PROPERTYOF THE provided FOR ERNEST MAIER INC. BESSER COMPANY. REPRODUCTION IN PART MODEL NO.: SUIVANT/NEXT ASS'Y.: OR WHOLE WITHOUT WRITTEN PERMISSION by an additional face shell. MODELE NO.: FROM THE BESSER COMPANY IS PROHIBITED. TRAIT. THERM.: CODE SURFACE: L'INFORMATION CONTENUE DANS CE DESSIN HEAT TREAT: SURFACE COAT CODE: EST LA PROPRIETE DE BESSER. LA REPRODUCTION COMPLETE OU EN PARTIE 8" OMNI BLOCK, STRETCHER UNIT SANS PERMISSIONECRITE DE BESSER EST TOLERANCE SI NON SPECIFIEE: INTERDITE. 7.625" x 7.625" x 15.625"L TOLERANCE UNLESS OTHERWISE SPECIFIED: NOM APPROUVÉ PAR: -DECIMAL/DECIMALE: .XXXX"= .0005", NAME DATE Given: .XXX"= .005", .XX"= .015", .X"= .030" DESSINE: APPROVED BY: -FRACTIONAL/FRACTION: 1/16" DT 21-Feb-11 DRAWN: FORMAT: NO. DESSIN.: -ANGLULAR/ANGULAIRE: 1 VERIFIE: PAGE: REV.: 297.86 = total cubic inches of two standard 8” CMU face-HOLE shellsLAYOUT/POSITION PERCAGE: 1/32" CHK'D.: SIZE: DWG. NO.: SCALE: 1:3 APPROUVE: B 02-722738 1 / 1 446.79 = total cubic inches of three Omni Block 8” stretcherECHELLE: face shells APP'D.: Then: (446.79 / 297.86) = 1.50 Omni Block 8” stretcher has 150% more or 1.50 times the resistance (or delayed thermal conductance) of a standard 8” CMU due to an additional face shell.

Resulting block face shell configuration calculation of an Omni Block 8” stretcher: Given: (hrft2°F/Btu) = R-value of standard 8” CMU per associated density of concrete, all other variables remain constant (NCMA TEK 6 2-B) 1.50 additional face shell resistance (or delayed thermal conductance) Then: (hrft2°F/Btu)(1.50) = additional resistance (or delayed thermal conductance) provided by additional face shell of an Omni Block 8” stretcher

- 4 - Block Cross Web Configuration Section

Cross Web - Standard nominally dimensioned 8” x 8” x 16” CMU typically has three (3) full-height direct cross webs from one face shell to the other face shell.

III. Determine cubic inches of three (3) standard 8” CMU cross webs (see green shaded areas): Given: 11/2 = width of CMU cross web, in inches 75/8 = height of CMU cross web, in inches 51/8 = depth of CMU cross web (excluding interior and exterior face shell sections), in inches 3 = quantity of CMU cross webs Then: 1.50 w x 7.625 h x 5.125 d = 58.62 cubic inches of cross web 58.62 x 3 = 175.86 total cubic inches of three standard 8” CMU cross webs

Standard CMU schematics

390.00 15.625 390.00

face shell 1 32.00 36.00 32.00 36.00 1.25 190.00 126.00 118.00 190.00 126.00 118.00 5.125 7.625 36.00 32.00 36.00

face shell 2 32.00 1.25

TRUE R16.00 R0.50TRUE R16.00

1.50 5.5625 1.50 5.5625 1.50 32.00 150.0032.00 26.00 150.00 150.00 26.00 32.00150.00 32.00 190.00 190.00 7.625

VOLUME = 451.08 451.08 VOLUME = 451.08 451.08 36.00 142.00 36.00 34.00 142.00 142.00 34.00 36.00 142.00 36.00 CU.IN. CU.IN. DENSITY = 0.08 0.08 DENSITY = 0.08 0.08 lb/CU.IN lb/CU.IN

WEIGHT: WEIGHT: THE INFORMATION CONTAINED IN THIS POIDS: 36.09 LBS DRAWING IS THE SOLE PROPERTYOF36.09 THE LBS THE INFORMATION CONTAINED IN THIS POIDS: BESSER COMPANY. REPRODUCTION IN PART DRAWING IS THE SOLE PROPERTYOF THE MASCOUCHE, BESSER COMPANY. REPRODUCTION IN PART MASCOUCHE, MODEL NO.: SUIVANT/NEXT ASS'Y.: OR WHOLE WITHOUT WRITTEN PERMISSION MODEL NO.: FROM THE BESSERSUIVANT/NEXT COMPANY IS PROHIBITED. ASS'Y.: OR WHOLE WITHOUT WRITTEN PERMISSION MODELE NO.: MODELE NO.: FROM THE BESSER COMPANY IS PROHIBITED. QUEBEC - CA QUEBEC - CA CODE TRAIT. THERM.: CODE SURFACE:CODE TRAIT. THERM.:L'INFORMATIONCODE CONTENUE SURFACE: DANS CE DESSIN L'INFORMATION CONTENUE DANS CE DESSIN HEAT TREAT SURFACE COAT CODE: EST LA PROPRIETE DE BESSER. LA EST LA PROPRIETE DE BESSER. LA HEAT TREAT REPRODUCTIONSURFACE COMPLETE COAT OU EN CODE:PARTIE CODE: CODE: REPRODUCTION COMPLETE OU EN PARTIE SANS PERMISSIONECRITE DE BESSER EST SANS PERMISSIONECRITE20cm. DE STANDARD BESSER EST UNIT, - P.P.B.E. - TOLERANCE SI NON SPECIFIEE: TOLERANCE SI NONINTERDITE. SPECIFIEE: 20cm. STANDARD UNIT, - P.P.B.E. - Cross Web - The nominally dimensioned Omni Block 8” stretcherTOLERANCE has UNLESS fourOTHERWISE SPECIFIED:(4) indirect, reduced-height,INTERDITE. cross webs; two TOLERANCE UNLESS OTHERWISENOM SPECIFIED:DATE RECTANGULARNOM CORE, STREIGHTRECTANGULAR BOTTOM. CORE, STREIGHT BOTTOM. -DECIMAL/DECIMALE: .XXXX"= .01mm,-DECIMAL/DECIMALE: .XXXX"=NAME .01mm, NAME DATE .XXX"= .10mm, .XX"= .3mm, .X"= .6mm .XXX"= .10mm,DESSINE: .XX"= .3mm,J.P. .X"=25.01.2005..6mm DESSINE: are from the interior face shell to the middle face shell and two from-ANGLULAR/ANGULAIRE: the middle 1 -ANGLULAR/ANGULAIRE: faceDRAWN: shell 1 to theDRAWN:FORMAT: exteriorNO.J.P. DESSIN.:25.01.2005. face shell. VERIFIE: FORMAT: SHEETNO. DESSIN.: 1 OF 1 REV.: SHEET 1 OF 1 REV.: -HOLE LAYOUT/POSITION PERCAGE: -HOLE.8mm LAYOUT/POSITION PERCAGE: .8mm VERIFIE:SIZE: DWG. NO.: PAGE 1 DE 1 CHK'D.: CHK'D.: SIZE: DWG. NO.: PAGE 1 DE 1 SCALE: 1:3 SCALE: APPROUVE: APPROUVE:B 16-03-4136 ECHELLE: ECHELLE: 1:3APP'D.: APP'D.: B 16-03-4136 IV. Determine cubic inches of two (2) Omni Block 8” stretcher exterior cross webs (see orange shaded areas): Given: 11/4 = width of Omni Block interior cross web, in inches 41/4 = height of Omni Block interior cross web, in inches 21/2 = depth of Omni Block interior cross web, in inches (from interior face shell to middle face shell) 2 = quantity of Omni Block interior cross webs Then: 1.25 w x 4.25 h x 2.50 d = 13.28 cubic inches of interior cross web 13.28 x 2 = 26.56 total cubic inches of two Omni Block 8” stretcher interior cross webs

- 5 - Block Cross Web Configuration Section - continued

V. Determine cubic inches of two (2) Omni Block 8” stretcher exterior cross webs (see orange shaded areas): Given: 11/4 = width of Omni Block exterior cross web, in inches 41/4 = height of Omni Block exterior cross web, in inches 13/8 = depth of Omni Block exterior cross web, in inches (from middle face shell to exterior face shell) 2 = quantity of Omni Block exterior cross webs Then: 1.25 w x 4.25 h x 1.375 d = 7.30 cubic inches of exterior cross web 7.30 x 2 = 14.60 total cubic inches of two Omni Block 8” stretcher exterior cross webs

Omni block stretcher schematics SIMILAR TO: 15.625 3.438 15.625 3.438

cC 2.094

R0.750 interior face shell 1.250 1.375 1.25

A A r0.438R0.438 2.250 2.500 TYP. 1.500 2.50 7.625 R0.250 middle face shell 0.156 1.375 1.125 7.625 bB bB 1.125 1.250 1.500 1.50

exterior face shell 1.375 1.250 1.25 cC Section c-c SECTION C-C

3.05 1.50 6.525 1.50 3.05 1.50 12.625 1.50 3.055 1.516 6.484 1.516 3.055 1.550 12.526 1.550 7.625 7.625

SECTION A-A SECTION B-B

2.930 1.766 6.234 1.766 2.930 1.624 12.377 1.624 Section a-a Section b-b

AS PER DRAWING A019018-800 BY REID-FLEMING INDUSTRIAL LLC WEIGHT: THE INFORMATION CONTAINED IN THIS POIDS: 42.76 LBS. DRAWING IS THE SOLE PROPERTYOF THE FOR ERNEST MAIER INC. BESSER COMPANY. REPRODUCTION IN PART MODEL NO.: SUIVANT/NEXT ASS'Y.: OR WHOLE WITHOUT WRITTEN PERMISSION Given: MODELE NO.: FROM THE BESSER COMPANY IS PROHIBITED. TRAIT. THERM.: CODE SURFACE: L'INFORMATION CONTENUE DANS CE DESSIN HEAT TREAT: SURFACE COAT CODE: EST LA PROPRIETE DE BESSER. LA REPRODUCTION COMPLETE OU EN PARTIE 8" OMNI BLOCK, STRETCHER UNIT 26.56 = total cubic inches of two Omni Block 8” stretcher interior cross websSANS PERMISSIONECRITE DE BESSER EST TOLERANCE SI NON SPECIFIEE: INTERDITE. 7.625" x 7.625" x 15.625"L TOLERANCE UNLESS OTHERWISE SPECIFIED: NOM APPROUVÉ PAR: -DECIMAL/DECIMALE: .XXXX"= .0005", NAME DATE 14.60 = total cubic inches of two Omni Block 8” stretcher .XXX"= exterior.005", .XX"= .015", .X"= cross.030" DESSINE:webs APPROVED BY: -FRACTIONAL/FRACTION: 1/16" DT 21-Feb-11 DRAWN: FORMAT: NO. DESSIN.: -ANGLULAR/ANGULAIRE: 1 VERIFIE: PAGE: REV.: Then: -HOLE LAYOUT/POSITION PERCAGE: 1/32" CHK'D.: SIZE: DWG. NO.: SCALE: 1:3 APPROUVE: B 02-722738 1 / 1 26.56 + 14.60 = 41.16 total cubic inches of the Omni BlockECHELLE: 8” stretcher crossAPP'D.: webs

- 6 - Block Cross Web Configuration Section - continued

The objective of this section is to calculate the additional thermal resistance (or delayed thermal conductance) provided by the indirect, reduced-height, cross webs of an Omni Block 8” stretcher.

Given: 175.86 = total cubic inches of standard 8” CMU cross webs 41.16 = total cubic inches of Omni Block 8” stretcher cross webs Then: 41.16 / 175.86 = 0.234 Omni Block 8” stretcher cross web volume is equal to 23.4% of standard 8” CMU cross web volume.

Given: 0.234 = percent of Omni Block 8” stretcher cross web volume to standard 8” CMU cross web volume 5.125 = total standard 8” CMU cross web, in inches 7.625 = total standard 8” CMU block width, in inches Then: 5.125 / 7.625 = 0.672 standard 8” CMU cross web volume (less face shells) within total standard 8” CMU block volume 0.672 x 0.234 = 0.157 Omni Block 8” stretcher cross web volume to total standard 8” CMU block volume 1 - (0.157 / 0.672) = 0.766 Omni Block 8” stretcher has a total of 76.6% additional effective resistance (or delayed thermal conductance) due to indirect, reduced-height, cross webs.

Resulting reduced cross web calculation of an Omni Block 8” stretcher: Given: (hrft2°F/Btu) = R-value of standard 8” CMU per associated density of concrete, all other variables remain constant (NCMA TEK 6 2-B) 76.6% additional effective resistance (or delayed thermal conductance) due to indirect, reduced-height, cross webs Then: (hrft2°F/Btu)(1.766) = additional resistance (or reduced thermal conductance) provided by indirect, reduced-height, cross webs of an Omni Block 8” stretcher

Block Face Shell Configuration and Cross Web Configuration Effect on Omni Block Stretcher R-Value

Summation of the additional resistance (or reduced thermal conductance) that must be factored for the Omni Block 8” stretcher when all cores are empty: Given: (hrft2°F/Btu)(1.50) = additional resistance (or delayed thermal conductance) provided by additional face shell of an Omni Block 8” stretcher (hrft2°F/Btu)(1.766) = additional resistance (or reduced thermal conductance) provided by indirect, reduced-height, cross webs of an Omni Block 8” stretcher Then: (hrft2°F/Btu)(1.50)+(hrft2°F/Btu)(1.766) = (hrft2°F/Btu)(1.50 + 1.766) = (hrft2°F/Btu)(3.266) Omni Block 8” stretcher has 3.266 times the R-value of standard 8” CMU.

- 7 - Continuous Interior Insert Insulation Correction Section

Interior Continuous Insulation Correction - Omni Block 8” stretcher interior continuous insulation has two (2) partial “breaks” (due to constricted block cross webs).

VI. Determine cubic inches of Omni Block 8” stretcher interior EPS foam inserts: Given: 16 = total width of foam, in inches 8 = total height of foam, in inches 21/4 = interior insert depth, in inches Then: 16 w x 8 h x 2.25 d = 288 total cubic inches of Omni Block 8” stretcher interior foam

VII. Determine cubic inches of two (2) Omni Block 8” stretcher interior cross webs : Given: 11/4 = width of Omni Block interior cross web, in inches 41/4 = height of Omni Block interior cross web, in inches 21/2 = depth of Omni Block interior cross web (interior face shell to middle face shell), in inches 2 = quantity of Omni Block interior cross webs Then: 1.25 w x 4.25 h x 2.50 d = 13.28 cubic inches of Omni Block 8” stretcher interior cross web 13.28 x 2 = 26.56 total cubic inches of two Omni Block 8” stretcher interior cross webs

Interior insulation insert

Note: 1) Insulation is 3/8” taller than 8” block to protect the 3/8” horizontal mortar joint. 2) Insulation overlaps from block- to-block to protect the vertical mortar joint. 7-5/8”

Interior insulation installation

- 8 - Continuous Interior Insert Insulation Correction Section - continued

The objective of this calculation is to determine the percent that should be deducted from the R-value of the interior insulation inserts due to the cross web areas of each block.

Given: 288 = total cubic inches of Omni Block interior foam 26.56 = total cubic inches of two Omni Block 8” stretcher interior cross webs Then: 26.56 / 288 = 0.092 percent of total Omni Block 8” stretcher interior cross web volume to total interior EPS foam insert volume 1 - .092 = 0.908 Omni Block 8” stretcher has 90.8% of continuous insulation value of interior foam insert R-value.

Resulting calculation provides the continuous insulation correction of the interior foam insert: Given: 2.25 = EPS foam depth, in inches 4.00 = R-value per inch of 1.35 lb. EPS foam (ICC ESR-1498 and ASTM C 578) 0.908 = percent of continuous insulation value of interior foam insert Then: [(2.25)(4.00)](0.908) = 8.17 additional interior continuous insulation R-value of an Omni Block 8” stretcher in relation to non-insulated standard 8” CMU.

- 9 - Continuous Exterior Insert Insulation Correction Section

Exterior Continuous Insulation Correction - Omni Block 8” stretcher exterior continuous insulation has two (2) partial “breaks” (due to constricted block cross webs).

VIII. Determine Omni Block 8” stretcher exterior EPS foam inserts cubic inches: Given: 155/8 = total width of foam area, in inches 8 = total height of foam area, in inches 13/8 = exterior insert thickness, in inches Then: 15.675 w x 8 h x 1.375 d = 172 total cubic inches of Omni Block exterior foam

IX. Determine cubic inches of two (2) Omni Block 8” stretcher exterior cross webs: Given: 11/4 = width of Omni Block exterior cross web, in inches 41/4 = height of Omni Block exterior cross web, in inches 13/8 = depth of Omni Block exterior cross web, in inches 2 = quantity of Omni Block exterior cross webs Then: 1.25 w x 4.25 h x 1.375 d = 7.30 cubic inches of Omni Block exterior cross web 7.30 x 2 = 14.60 total cubic inches of two Omni Block exterior cross webs

exterior insulation insert

8”

Note: 1) Insulation is 3/8” taller than block to protect the 3/8” horizontal mortar joint. 7-5/8”

exterior insulation installation

- 10 - Continuous Exterior Insulation Insert Correction Section - continued

The objective of this calculation is to determine the percent that should be deducted from the R-value of the exterior insulation inserts due to the cross web areas of the block.

X. Determine cubic inches where Omni Block 8” stretcher exterior foam does not protect the vertical mortar joint: Given: 3/8 = width of vertical mortar joint, in inches 8 = height of vertical mortar joint, in inches 13/8 = depth of unprotected vertical mortar joint, in inches Then: 0.375 w x 8 h x 1.375 d = 4.13 cubic inches of the unprotected vertical mortar joint

Given: 14.60 = total cubic inches of two Omni Block exterior cross webs 4.13 = cubic inches of the unprotected vertical mortar joint Then: 14.60 + 4.13 = 18.73 total cubic inches without EPS insulation

Given: 18.73 = total cubic inches without EPS insulation 172 = total cubic inches of Omni Block exterior insulation Then: 18.73 / 172 = 0.109 percent of total Omni Block 8” stretcher exterior cross web volume to total exterior EPS foam insert volume 1 - 0.109 = 0.891 Omni Block 8” stretcher has 89.1% percent of continuous insulation value of exterior foam insert R-value.

Resulting calculation provides the exterior Omni Block 8” stretcher continuous insulation correction: Given: 1.375 = EPS foam depth, in inches 4.00 = R-value per inch of 1.35 lb. EPS foam (ICC ESR-1498 and ASTM C 578) 0.891 = percent of continuous insulation value of exterior foam insert Then: [(1.375)(4.00)](0.891) = 4.90 additional exterior continuous insulation R-value of an Omni Block 8’ stretcher in relation to non-insulated standard 8” CMU

Continuous Interior Insulation Insert Correction and Continuous Exterior Insulation Insert Correction Effect on Omni Block Stretcher R-Value Summation of the Omni Block 8” stretcher continuous insulation correction: Given: [(2.25)(4.00)](0.908) = 8.17 additional interior continuous insulation R-value of an Omni Block 8” stretcher [(1.375)(4.00)](0.891) = 4.90 additional exterior continuous insulation R-value of an Omni Block 8’ stretcher Then: 8.17 + 4.90 = 13.07 Omni Block 8” stretcher has 13.07 total additional continuous insulation R-value in relation to non-insulated standard 8” CMU

- 11 - Totals

The table below illustrates the R-Value effects of the preceeding calculations of the Omni Block 8” stretcher Face Shell and Cross Web Correction Factors as well as the Continuous Insulation Correction.

Omni Block Face Shell Omni Block Stretcher Concrete Standard and Stretcher Continuous Cores Nominal Density CMU Cross Web Cores Insulation with Thickness pcf Cores Empty Correction Empty Correction EPS Inserts R-Value Factor R-Value Add R-Value

8” 85 2.5 X 3.266 = 8.2 + 21.24 = 21.2

8” 95 2.3 X 3.266 = 7.5 + 21.24 = 20.6

8” 105 2.2 X 3.266 = 7.2 + 21.24 = 20.2

8” 115 2.1 X 3.266 = 6.8 + 21.24 = 19.9

8” 125 2.0 X 3.266 = 6.5 + 21.24 = 19.6

8” 135 1.9 X 3.266 = 6.2 + 21.24 = 19.3

The resulting data is used to complete the Tables on the following page.

- 12 - 1-877-711-OMNI www.omniblock.com

Table 1 - U-Factors (Btu/hrft2°F) and Table 2 - U-Factors (Btu/hrft2°F) and R-Values (hrft2°F/Btu) of Concrete Masonry Walls A R-Values (hrft2°F/Btu) of Omni Block Walls A Nominal Wythe Concrete Standard CMU 100% Nominal Wythe Concrete Stretcher Unit Cores With Thickness Density Cores Empty Solid Grouted B Thickness Density Cores Empty C EPS Inserts D,E in. (mm) pcf in. (mm) pcf U R U R U R U R

85 0.402 2.5 0.525 1.9 85 0.123 8.2 0.047 21.2

8 in. 95 0.427 2.3 0.559 1.8 8 in. 95 0.133 7.5 0.048 20.6 (203mm) (203mm) 105 0.452 2.2 0.592 1.7 105 0.139 7.2 0.049 20.2

115 0.479 2.1 0.623 1.6 115 0.146 6.8 0.050 19.9

125 0.507 2.0 0.654 1.5 125 0.153 6.5 0.051 19.6

135 0.537 1.9 0.684 1.5 135 0.161 6.2 0.052 19.3

85 0.390 2.6 0.441 2.3 85 0.102 9.8 0.032 31.0

12 in. 95 0.411 2.4 0.466 2.1 12 in. 95 0.110 9.1 0.033 30.3 (305mm) (305mm) 105 0.433 2.3 0.490 2.0 105 0.115 8.7 0.033 29.9

115 0.455 2.2 0.515 1.9 115 0.121 8.3 0.034 29.5

125 0.478 2.1 0.539 1.9 125 0.126 7.9 0.034 29.2 135 0.503 2.0 0.564 1.8 135 0.133 7.5 0.035 28.8

Table 1 Source: Abbreviated NCMA TEK 6-2B Table 2 Source: Tom Norris, Architect (ICC Certified) A (hrft2°F/Btu) (0.176) = m2K/W. Mortar joints are 3/8" (9.5 mm) C 8 inch unit has an additional face shell and reduced cross-web thick, with face shell mortar bedding. Unit dimensions based on conductance. Resulting formula: Standard Specification for Loadbearing Concrete Masonry Units, (hrft2°F/Btu)(1.50)+(hrft2°F/Btu)(1.76). ASTM C 90. Surface air films are included. 12 inch unit has two additional face shells and reduced cross-web B Grout density is 140 pcf (2,243 kg/m3). Lightweight grouts will conductance. Resulting formula: provide higher R-values and may be used. (hrft2°F/Btu)(2.00)+(hrft2°F/Btu)(1.772). D Values apply when all cores are filled completely. Table 3 - Thermal Resistance of EPS Foam Insulation E Average continuous insulation correction factor is 10% less than total insert R-value. Minimum R-Value Per Inch Density of Thickness Some table values are the same due to rounding. EPS Type (pcf) F (F°•ft2•h/Btu) II 135 4.00

Table 3 Source: ICC ESR - 1498 per ASTM C 578 F pcf = 16.02 kg/m3, 1°F ft2hr/Btu=0.176m2K/W, 1°F=1.8°C+32

DISCLAIMER The information presented in this report/analysis is to assist architects, designers, professional builders, and professional engineers when utilizing the Omni Block Insulated Concrete Block System. While the material is presented in good faith and beleived to be reliable, it does not constitute a part of, or terms and conditions of sale. No engineering data, design information or other material contained herein shall be deemed to constitute a warranty, expressed or implied, that said information is correct or that the products described are fit for a particular purpose of design application.