R Value Of Tilt Up Concrete Wall

This contributes to its strength high r value and moisture resistance.

R value of tilt up concrete wall.

Jim baty with the tilt up concrete association tca provides an in depth review of tilt up wall panels compared to other building systems for new r value and u value requirements in a recent article in. Walls can range from r values of about 2 for uninsulated panels up to about 32 for walls containing thicker layers of insulation. With over 35 years of experience we are the undisputed leader in concrete sandwich wall technology and can help you create building envelopes that maximize energy efficiency durability and performance. Precast concrete construction is well known in the industry but tilt up concrete construction is the breakout method for constructing buildings of tomorrow.

By doubling the thickness of the wall to 16 inches the r value only increases by 0 50. The insulating materials used for these systems range in r value. The steady state thermal analysis shows the total isothermal r value for the wall with the ability to factor in thermal breaks such as metal ties or solid concrete sections. The r value of an uninsulated 8 inch thick basement wall built using normal weight concrete is 1 35 based on data from the 1993 american society of heating refrigeration and air conditioning engineers handbook.

Download the document in pdf format 2 pages 214 kb astm c1289 type ii class 2 polyisocyanurate data sheet. As building codes require greater energy efficiency the thickness of insulation increases. Based on astm c518 calculation method the door has an r value of up to 11 but using astm c1363 tested operable the same door only have an r value of up to 3 5. Thermomass isomass insulation combines a high performance polyisocyanurate foam core with a multiplex kraft aluminum poly facer.

By placing 2 inches of extruded polystyrene within a tilt up panel as a sandwich panel the material r value of that wall is increased to 11 49 with air film coefficients of 0 85. This is a huge difference and essentially comes down to astm c518 being a theoretical maximum based on a steady state thermal test of only a portion of the door panel. The 3 most common insulation methods for tilt up concrete construction. You will notice in the findings shown in the isothermal analysis that the thermomass wall panel has a material r value of r 11 49.

We manufacture and distribute a full line of concrete insulation systems for use in plant precast site cast tilt up and cast in place projects. But like all concrete systems tilt up offers high thermal mass and airtight construction.