PERFORMANCE FACTOR |
 |
WOOD |
| 1. WALL CONSTRUCTION |
SOLID CONCRETE |
HOLLOW CAVITIES |
| 2. R-VALUE OF INSULATION |
R-20 |
R-11 or R-19 |
| 3. THERMAL MASS (lbs/ft2) |
56 lbs/ft2 |
2 lbs/ft2 |
| 4. TYPICAL AIR LEAKAGE |
0.1 ACH (Air changes per hour) |
0.4 ACH |
| 5. EFFECTIVE R-VALUE OF WALL
(Resulting from 1, 2 & 3 above) |
R-30 to 50 |
R-10 to 17 |
| 6. ESTIMATED ANNUAL HEATING &
COOLING COSTS (USA Average) |
LESS THAN $1,200 |
$2,400 |
| 7. ENERGY WARRANTEE |
30% SAVINGS (Over 2x6 & R-19
Insulation) |
NONE |
| 8. BEARING CAPACITY (Top of Wall)
(pounds per linear foot) |
27,000 plf |
4,000 plf |
| 9. WIND CAPACITY (Design Wind
Pressure lbs/ft2) |
200 mph (1175 lbs/ft2) |
130 mph (72 lbs/ft2) |
| 10. FIRE RATING OF WALL |
1 TO 2 HOURS |
NOT RATED |
| 11. FOOD FOR TERMITES |
NO |
YES |
| 12. BULLET RESISTANT |
YES |
NO |
| 13. BUILDING CODE REQUIREMENTS |
EXCEEDS CODES |
MEETS CODES |
| 14. ENVIRONMENTAL ADVANTAGES |
SAVES TREES & ENERGY |
NONE |
| 15. OUTSIDE NOISE REDUCTION (STC=
Sound Transmission Control) |
STC 48 |
STC 37 |
| 16. REDUCES POLLEN INSIDE HOME |
YES |
NO |
| 17. OVERALL INSIDE COMFORT |
FAR SUPERIOR |
OK |
| 18. HOMEOWNER'S INSURANCE RATES |
10%-25% LOWER RATES (with many
companies) |
STANDARD RATES |
| 19. COST OF AVERAGE HOME |
$104,000 |
$100,000 |
| 20. QUALIFIES FOR LARGER MORTGAGE |
YES |
NO |
| SCORE: |
POLYSTEEL
19 |
WOOD
1 |
