There are three principal layers; 1  External intercostal muscles aid in quiet and forced inhalation. They originate on ribs 1-11 and have their insertion on ribs 2-12. 2  Internal intercostal muscles aid in forced expiration (quiet expiration is a passive process).
Costs. A professional concrete contractor will typically charge $2-$4 per square foot for a simple stain application, including the sealer. A stain application with patterning and sawed lines will typically cost between $4 and $10 per square foot.
10 styrofoam used a lot for radiant heat floors those are the basics of what s included and not included in my concrete floor costs for residential concrete floors my $ 2 50 $ 3 00 dollars per sq ft cost will remain consistent throughout the yearfor commercial concrete floors the cost is anywhere from $ 50 $ 1 00 dollar per sq ft moreif you re trying to figure what the cost for concrete flooring is in your area i would suggest calling a local redi mix concrete company and asking them for 3 referrals they know who does quality work and who doesn te also do a lot of other decorative concrete applications you ll be able to find pricing for stamped concrete stained concrete and more at the bottom of the page my basic cost to pour and finish a concrete floor is $ 2 50 $ 3 00 per square foot