Secondary stress. A secondary stress is any stress in the structure which is not a primary stress or peak stress. Source: API SPEC 16R, Specification for Marine Drilling Riser Couplings, Exploration and Production Department, First Edition, January 1997. Global Standards.
Two groups of ground nesting bees commonly. found in Michigan are bumble bees and. burrower (andrenid) bees. Bumble bees are. easily recognized by their large, robust, hairy, black and yellow (sometimes orange) bodies. Bumble bees live in colonies of several. hundred individuals, but only the queens.
Pollinating Insects. 1  Bees-There are many different type of bees that can pollinate plants and some are around during different phases of the growing season. 2  So, it makes good sense to plant a nice variety of plants to beep them coming around.3  Butterflies-Butterflies are a rather obvious pollinating insect.ollinating Insects. 1  Bees-There are many different type of bees that can pollinate plants and some are around during different phases of the growing season. 2  So, it makes good sense to plant a nice variety of plants to beep them coming around.