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.
Bumble bees have a fuzzy abdomen and the Carpenter Bee has a shiny abdomen. General Bumble Bee Information. The Bumble Bee is a big, hairy, black and yellow bee whose size can range from 3/4 inch to 1 1/2 inch.This insect is often mistaken for a carpenter bee, which closely resembles the bumble bee in appearance. Carpenter bees have a shiny and smooth abdomen as opposed to the fuzzy abdomen seen on a bumble bee.umble bees are very important, beneficial insects that pollinate plants and flowers. Their activity in your gardens are desirable but allowing them to nest in areas where children and pets frequent or where you garden is not desirable.