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.
Ground Bees. All About Ground Bees. Contrary to most peopleâs jerk reaction to bees in general, most ground bees and earth-nesting wasps are generally peaceful and not aggressive. The most common type of ground bee is a small, dingy colored insect who houses one female per colony.