OTTB stands for Off the Track Thoroughbred. The OT stands for of the track and the TB stands for Thoroughbred and TB is a short form of Thoroughbred. This means that the horse was previously a racing Thoroughbred however their racing career is over.
The dead load includes loads that are relatively constant over time, including the weight of the structure itself, and immovable fixtures such as walls, plasterboard or carpet. The roof is also a dead load. Dead loads are also known as permanent or static loads. Building materials are not dead loads until constructed in permanent position. IS875(part 1)-1987 give unit weight of building materials, parts, components. Live load, Imposed loads, Transient load. Live loads, or imposed loads, are temporary, of short duration, or a moving load.
CT TRENCHING AND SHORING MANUAL 4.8 SURCHARGE LOADS A surcharge load is any load which is imposed upon the surface of the soil close enough to the excavation to cause a lateral pressure to act on the system in addition to the basic earth pressure.