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.
1 When your skin gets damaged by the sun's rays, it makes even more melanin to try to protect your skin from being damaged even more. That causes the skin to change color:  Dark-skinned people usually turn darker brown, or tan, when they go in the sun.