Problem 20.5 The origin of the secondary coordinate system shown is fixed to the center of mass G of the cube. The velocity of the center of mass G of the cube relative to the primary reference frame at the instant shown is vG = 26i + 14j + 32k (m/s). The cube is rotat- ing relative to the secondary coordinate system with angular velocity @rel = 6.2i – 5j +8.8k (rad/s). The sec- ondary coordinate system is rotating relative to the pri- mary reference frame with angular velocity = 2.2i + 4j – 3.6k (rad/s). 2 m (a) What is the velocity of point A of the cube rela- tive to the primary reference frame at the instant shown? O. Primary reference frame (b) If the components of the vectors Wrel and 2 are constant, what is the cube's angular acceleration relative to the primary reference frame?

Q: Define integer ambiguities.

A: Answer The integer ambiguities are used in GPS & GNSS surveys.

Q: What are Quantity Variations?

A:

Q: What are the component parts of a Specification?

A: Component specification:

Q: Can you please explain the parallel axis theorem? I don't really understand it and I don't…

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Measuring site work, Excavation and Piling

Bid drawings typically include very little material about the precise requirements of site work operations, measuring site work and excavation work differs from measuring most other works on a construction project. The actual site work conditions are not provided and also the dimensions of the excavations are not known during the pre-construction phase. The precise measurement of the excavation and backfill of the earth material and topsoil is important for a contractor to decide upon the total cost required for the process. All the works should be carried out under OSHA (Occupational Safety and Health Administration) standards to ensure the safety of the workers.