12" 90º Buildlock KD Corner Block - 8/bundle

  • SKU:  00BL1290

Sold in Units of 8

The BuildLock Knockdown ICF System is a high performance knock-down insulating concrete form (ICF) wall system comprised of two separate 2½ inch Expanded Polystyrene (EPS) panels which are connected by strong, high-density plastic webs on 6-inch centers. Each Knockdown bundle comes with the appropriate number of webs. BuildLock is the strongest knock-down product on the market today.
Each web bridge features a 3-axis positive locking attachment that snaps the web securely in the proper position to eliminate racking and provide superior structural stability throughout the construction process. The BuildLock Knockdown block exceeds even the superior strength of BuildBlock ICF blocks.

Why BuildLock Knockdown

  • Available in 4”, 6”, 8”, 10”, 12” or greater core widths.
  • BuildLock’s patented web is the strongest web on the market.
  • Double-reinforced corner webs on 10” and 12” forms for safer pours and more attachment points.
  • Expandable core for larger sizes (24”+) with optional bridge connectors.
  • Blocks ship flat to reduce shipping costs and increase product storage capacity.
  • Larger rebar saddles for multiple rebar sizes.
  • Reinforced web flanges for additional strength.
  • Simple, quick on-site assembly.
  • Completely reversible webs for multiple rebar locations and 8” horizontal spacing.
  • Connect multiple webs for special construction needs such as pilasters.
  • Use BuildBlock Hardwall to create an ICF wall with bare concrete on one side.

Knockdown Advantages

  • Commercial ICF block for projects requiring 4” to 12”+ concrete cores.
  • Patented strongest ICF web design on 6” centers.
  • Build 4”-24”+ walls using optional bridge clip connector.
  • Integrate pilasters into ICF walls.
  • Create insulated footings and foundations.
  • Designed to easily allow 8” horizontal rebar spacing in large commercial projects.
  • Tilt up & retrofit insulation applications.
  • On-site assembly for integration of pre-set penetrations such as blast proof door and window frames.

BuildLock ICF Benefits

  • Fully reversible blocks and webs.
  • Numbered vertical cut lines every
  • 1-inch and horizontal cut lines every 2-inches.
  • Tight interlocking blocks with 100% surface-to-surface connections eliminating costly ties and accessories.
  • High-Density Plastic Webs with 2 Extra Heavy Duty Attachment Points (450lb.+ pullout) on each web.
  • Form and insulate in one step and use any finish application including BuildBlock Hardwall.
  • 4-hour fire rating and low sound transmission.
  • Fully integrates with all other BuildBlock ICF Products.

BL-1290 Specifications

Specification Imperial Metric

Product ID

BL-1290 BL-1290

Length

39” (ext) / 22” (int.) 990mm (ext) /
558mm (int.)

Width

17” (12” Core) 431mm (304mm Core)

Height

16” 406mm

Return

27” (ext) / 10” (int.) 685mm (ext) /
254mm (int.)
Concrete Volume 0.191408 yd3 .146341 m3

Surface Area

7.33 sq.ft. .6809 m2

EPS Dimension

2.5" each panel 63mm each panel

Quantity Per Bundle

8 blocks/16 panels 8 blocks/16 panels
EPS Foam Density (lbs./cu.ft.) 1.5 lbs./cu.ft.  
EPS Foam Depth (in) 2.5" / 5" Total 6.35 cm / 12.7 cm Total

Bundle Specifications

Specification Imperial Metric
Bundle Dimensions 55" x 42" x 49.5" 139.7 cmx 106.68 cm x 125.73 cm
Bundle Length 55" 139.7 cm
Bundle Width 42" 106.68 cm
Bundle Height 49.5" 125.73 cm
Bundle Weight 64lbs 29 kg

Quantity Per Bundle

8 blocks/16 panels 8 blocks/16 panels

Energy Efficiency Specifications

Specification  
Actual R-Value 4.4 Per inch of EPS Foam
Effective R-Value R-24 to R-50
K-Factor .24 Per inch of EPS Foam
Steady State R-Value R-21 Foam Value
U-Value U-0.048
Water Absorption Less than 3% (ASTM C272)
Water Vapor 0.56 perms per 2.5"

Safety Specifications

Specification  
Concrete Compressive Strength (psi) 3,000
Concrete Pour Temperature Range Down to 0°F (-18°C)
Firewall Rating 5,000 to 12,000 lbs per lineal foot for 3 hours.
Sound Class 1-sided STC Sound Class rating of 51 with 1/2-inch sheetrock on one side.
Sound Class 2-sided STC Sound Class rating of 54 with 1/2-inch sheetrock on both sides.

 

General Specifications

SPECIFICATION Imperial Metric
Expanded Polystyrene density 1.5 lbs./cu.ft. 24.02769 kg/m3
Average thickness of EPS 2½” per panel (5” total) 12.7cm (6.35cm per panel)
Material R-value R-22 Foam Value R-22 Foam Value
Performance R-value
(concrete, form R-value, air infiltration reduction, and thermal mass)
R-30 to R-52 R-30 to R-52
U 0.33 to U 0.02
Actual R-value per inch of EPS Foam 4.2/inch  
Thermal Mass (form & concrete) 4” Core: 47.5 lbs./ft2
6” Core: 72 lbs/ft2
8” Core: 96 lbs/ft2
10” Core: 119 lbs/ft2
12” Core: 143 lbs/ ft2
4” Core: 231.9 kg/m2
6” Core: 351.5 kg/m2
8” Core: 468.7 kg/m2
10” Core: 581.0 kg/m2
12” Core: 698.2 kg/m2
K-Factor .24/inch  
Water absorption - 3% (ASMC272) - 3% (ASMC272)
Water vapor 0.56 perms per 2½” Panel 0.84 metric perms per 2½” Panel
Sound class 52 with ½” sheet rock on inside 52 with ½” sheet rock on inside
Fire wall 3 Hour Fire Rating on BB-600 Wall (Loading 5,000 lb. per lineal feet throughout test.)
(Post test loading 12,000 lbs. per lineal foot with no additional depletion.)
3 Hour Fire Rating on BB-600 Wall (Loading 7440.6 kg/m throughout test.)
(Post test loading 17857.9 kg/m with no additional depletion.)
Concrete compressive strength Recommended 3000 psi minimum Recommended 20 MPa minimum
Recommended concrete pouring temperature* 15°F to 120°F* (-9°C to 49°C)*
*Properly handled, specially formulated concrete can be poured at temperatures as low as -15ºF (-26ºC). Consult your ready mix company. Important: At temperatures below freezing, you must cover all exposed concrete with insulating material.

ASTM Standards Product Testing

BuildBlock ICFs are evaluated to ensure they meet or exceed a variety of industry standards tests. Visit http://buildblock.com/technical-support/product-testing/ for more information.

Properties ASTM TEST RANGE REQUIRED TEST VALUE
Density ASTM D1622 1.5lb/ft³ 1.69lb/ft²
Thermal Resistance ASTM C177 4.0F.ft².h/Btu/in 4.08F.ft².h/Btu/in
Compressive Strength ASTM D1621 15.0 psi 23.1 psi
Flexural Strength ASTM C203 40.0 psi 50.4 psi
Flame Spread ASTM E84 25 Maximum >25
Smoke Developed ASTM E84 450 Maximum >450
Fire Wall Rating ASTM E119   3hr
R-Value ASTM C518 R-22 R-22
STC Rating ASTM E413 STC 50 STC 50
Vapor Permanence ASTM E96 3.5 perms/inch Maximum 2.04 perms/inch

Standard Specification for Rigid, Cellular Polystyrene Thermal Insulation

Specification Reference: ASTM C 578-92 Type I Type VIII Type II Type IX
Property   Units ASTM Test        
Density, minimum   (pcf) D 303 or D 1622 0.90 1.15 1.35 1.80
Density Ranger   (pcf) C 177 or C 518 0.90-1.14 1.15-1.34 1.35-1.79 1.80-2.20
Thermal Conductivity           
K Factor                              

at 25 F
at 40 F
at 75 F

BTU/(hr.)
(sq.ft.)(F/in.)
  0.23
0.24
0.26
.22
.235
.255
.21
.22
.24
.20
.21
.23
Thermal Resistance at 25 F
at 40 F
at 75 F
at 1 inch thickness   4.35
4.17
3.85
4.54
4.25
3.92
4.76
4.55
4.17
5.00
4.76
4.35
Strength Properties
Compressive 10% Deformation
Flexural
Tensile
Shear
Shear Modulus
Modulus of Elasticity
  psi
psi
psi
psi
psi
psi
D 1621
C 203
D 1623
D 723
_____
_____
10-14
25-30
16-20
18-22
280-320
180-220
13-18
30-38
17-21
23-25
370-410
250-310
15-21
40-50
18-22
26-38
460-500
320-360
25-33
50-75
23-27
33-27
600-640
460-500
Moisture Resistance
WVT
Absorption (vol.)
Capillarity
  perm. in
%
––––
  2.0-5.0
less than 4.0
none
1.5-3.5
less than 3.0
none
1.0-3.5
less than 3.0
none
0.6-2.0
less than 3.0
none
Coefficient of Thermal Expansion   in./(in.)(F) D696 0.000035 0.000035 0.000035 0.000035
Maximum Service Temperature
Long-term Exposure
Intermittent Exposure
      167
180
167
180
167
180
167
180
Oxygen Index   % D 2863 24.0 24.0 24.0 24.0

Please use the BuildBlock ICF installation resources mentioned below to build the safest and most successful ICF projects possible. More information can be found on our mail website at http://buildblock.com. Please also visit our Youtube Channel at https://youtube.com/buildblock for product videos, installation videos, project tours, howto videos and more.

Installation Brochures & Quick Start Guides

BuildBlock Product Installation Manuals

The table below provides a link to the BuildBlock Product Installation Manual. The manual is freely downloadable and a hard copy is available for purchase here in the store. Please read this manual to fully understand how to properly install BuildBlock ICFs. If you have any questions, more information can be found on our website at http://buildblock.com/technical-support or by contacting your sales representative or our technical department at 866-222-2575. Our goal is for you to build successful ICF projects that will last for generations. Our motto is Build it once, Build it for life.

Section Content Revised Download
Section 1 BuildBlock Installation & Technical Manual 10/2015 (8 MB)
  BuildBlock Installation & Technical Manual (High Resolution) 10/2015 (71 MB)
Section 2 GlobalBlock Installation & Technical Manual 9/2015 (13 MB)
Section 3 BuildDeck Roof & Floor Decking System Design, Engineering, and Installation Manual 1/2011 (5 MB)
Section 4 BuildBlock Hardwall Installation Manual 12/2015 (11 MB)
Section 5 ThermalSert & ThermalSert KD Manual 7/2014 (4 MB)
Section 6 BuildBrace ICF Bracing & Alignment System Manual 8/2015 (7 MB)
Section 7 BuildBuck ICF Window & Door Bucking Product & Installation Manual 12/2015 (7 MB)
Section 8 BuildShield Termite & Firestop Protection Product & Installation Manual 12/2015 (4 MB)
Section 9 BuildBlock ICF Products & Safe Room Engineering Manual 4/2016   (14 MB)
Section 10 BuildBlock CAD Details 10/2015 (17 MB)
Section 11A Prescriptive Method for Insulating Concrete Forms in Residential Construction, Second Edition 1/2002 (2 MB)
Section 11B Prescriptive Method for Insulating Concrete Forms in Residential Construction, Second Edition Appendix 1/2002   (2 MB)
Section 12 Prescriptive Method for Connecting Structural Insulated Panel Roofs to Concrete Wall Systems 5/2008 (519 kB)
Section 13 BuildBlock 03 11 19 CSI Specifications 10/2015 (55 kB)
(30 kB)
(52 kB)
(80 kB)
Section 14 BuildBlock Code Approvals & Product Testing  7/2015 (5 MB)
Section 15  White Papers and Industry Research (Click here to visit download page)
New research and whitepapers are added to this section regularly.
10/2015  
These files create the most current version of the BuildBlock Technical & Installation Manual Binder.

BuildBlock Installation & Howto Videos