General Contractor License Study Guide 2026

OSHA's Subpart P specifies the maximum allowable slopes for excavations less than 20 feet deep. For Type C soil, which is the least stable classification (includes granular soils, submerged soil, or soil with freely seeping water), the required slope is 1½ horizontal to 1 vertical (1½:1), which corresponds to a 34-degree angle.

The statement that trusses are never used as repetitive lightweight members, such as steel bar, is untrue. Trusses, particularly steel bar joists, are very commonly used as repetitive lightweight structural members for roofs and floors in various types of buildings. Their triangulated geometry allows them to efficiently span long distances while minimizing material use and weight, making them an economical and effective choice for such applications.

Type S screws are specifically engineered for fastening gypsum board to light-gauge steel studs or channels. They feature a sharp point for easy penetration and fine threads that provide a secure grip in thin metal, preventing stripping and ensuring a strong attachment. Their design is optimized for the specific requirements of drywall and light-gauge steel framing applications.

The primary role of a project supervisor is to ensure the day-to-day implementation and enforcement of the project's safety plan. This includes making sure all workers, including subcontractors, adhere to safety regulations, use PPE correctly, and follow safe work practices. While they are involved in safety, their main function is enforcement and daily oversight, not solely procurement or initial plan development.

The first step in the LOTO procedure is preparation, which includes identifying all energy sources and notifying all affected employees of the impending shutdown. This ensures that no one attempts to operate the equipment while it is being serviced. Applying the lock, verifying isolation, and performing the work all come after notification and shutdown.

In many states, including California, a written contract is legally required for home improvement projects when the contract price exceeds a certain threshold to protect both the homeowner and the contractor. While California's threshold is $500, $2,000 or more is a common and significant threshold in many jurisdictions for requiring a formal written agreement for residential property work.