Omni Block Featured in dynamics of masonry
Omni Block was recently featured in the industry publication dynamics of masonry in an article entitled “Rebirth of Single Wythe Masonry”. The article effectively addresses how insulated single wythe masonry complies with the International Energy Conservation Code (IECC) which 39 states and Washington DC have adopted. The complete article is at http://digital.ipcprintservices.com/publication/frame.php?i=262705&p=11&pn=&ver=flex.
Texas Home Beating Utility Projections by 60%!
The latest Omni Block Home Energy Rating System (HERS) evaluation was recently completed in Alvarado, Texas. The 2512 sq. ft. single-story total electric house, owned by Mr. and Mrs. Pete Muzika, scored a 58 (see floor plan below). This basically means that the house should perform 42% better than the prevailing energy code. The certificate can be seen below. The HERS evaluation includes a blower door test and a duct blaster test as well as the make and model of all appliances and the HVAC system. The third-party testing company, TexEnergy Solutions, used an R-19.6 for the Omni Block walls. When questioned about why they used this lower R-Value the lead project coordinator responded, “That 19.6 was the highest R-Value that this region can input. Any higher R-Value inputed would not change the overall result.”
Notice that TexEnergy projected the energy consumption to completely run this house at $2,602 annually or approximately $214 a month on average. The owners have now lived in the home for over 11 months, keeping their thermostat set at 72° in the summer and 74° in the winter. The actual average monthly energy cost has been $86!
Statement of fact: This house, built with Omni Block is beating the utility projection by 60%!
The only variable is Omni Block. The reason that they are so far off on their estimate is that current software (REM/Rate) that is used to input the data does not adequately allow for Omni Block’s thermal mass affect on the ambient indoor temperatures.
Tighter is Better
“The 2012 IECC code mandates a maximum Air Changes per Hour (ACH) of 5.0. Many new homes struggle to make that target. To calculate the ACH of this Omni Block home, multiply the blower door test score of 1,380 CFM times 60 minutes per hour and divide by 44,312 (the cubic footage of the house). The result is 1.88 Air Changes per Hour, which is exceptionally tight. This is one of the tightest buildings that we have tested”, according to Bill Syfan, LEED AP HOMES, HERS Rater and NGBS Verifier.
Renew Urban Charleston
155 Wentworth Street was a cooperative construction project in Charleston, SC. Architect Bill Huey + Associates, Renew Urban Charleston, American College of the Building Arts and the supplier of Omni Block, Adams Building Products have collectively worked together to construct this cost-effective “prototype” energy efficient single-family residence.
The use of standard concrete lintels and ledger bolts for the load-bearing of the second floor are shown in the photo above.
Residential Industrial Architecture
The combination of exposed wood at ledger, truss, interior wall locations and exposed Omni Block provide a beautiful industrial look.
Architect: Tom Norris owner of Norris Architects
Scottsdale, AZ 480-734-7711
The Omni Block job site looks the same as any other block job site. These masons are preparing to start the second floor.
The second floor is nearly complete and the glass block is installed, window openings defined, and the ledger bolts grouted solidly within the bond beam block.
A typical ledger is securely bolted to the block wall. The framer can now hang the second floor joists onto the ledger.
The top-of-wall course requires that the interior cell that normally contains an insulation insert is left void, which allows horizontal rebar to be placed continuously around the structure and then grouted solid. There is still a layer of insulation protecting the interior conditioned space.
A section of wall that is at a door jamb and contains an electrical outlet with a vertical conduit application.