The steel material only accounts for about one-third of the total framing cost. Two-thirds of the cost goes into fabrication, erection, and other labor costs. Like archeng59, I often add steel tonnage in order to have a more repetetive building that cuts down the labor costs.
1 A change in skin color is due to an underdeveloped circulatory system. 2  Babies often exhibit mottling of the skin due to their immature circulatory system. 3  The nerve supply to the fine blood vessels on the upper skin layer is still immature.
These areas of skin then become darker or get black and dark spots. There may be many causes for black spots on your face. Hormonal imbalance is one of them. Sometimes, dark spots are due to some blood vessel deformities under the skin where these black spots appear on your face.