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.
1 Honey bees (at least the females) have a much more pointed abdomen than bumble bees. 2  Although a male honey bee has a rounded abdomen, you will rarely see one outside of the hive. 3  Honey bees have an obvious wasp-waist, while bumble bees are thicker through the middle. 4  The veination of the wings is different.he different species of bumble bee have different colors and they are different sizes as well. Some are quite large, some much smaller. Both bumble bees and honey bees have hair, but bumble bees are robustly hairy: scary hairy. The hairs cover most parts of the bee from the head to the tip of the abdomen.