Question

drains should be provided outside the vehicle door in garages that are below grade, where the driveway slopes down toward the garage; when the floor slab has settled; detached; in wet climates where the garage is attached; provided with interior drains. question 6 a floor drain at the bottom of a basement walkout should have a trap; should be tied into the perimeter drainage tile around the house; must be tested for functional drainage; can be connected to a french drain or to a floor drain pipe inside the house; should connect to a minimum 4 inch drain pipe

Explanation:

1. For the first question about garage drains, when a garage is below grade and the driveway slopes down towards it, water can accumulate and flow into the garage. Providing a drain outside the vehicle door helps to prevent water - ingress. Other options like a settled floor slab, detached or attached nature in wet climates, or existing interior drains do not directly relate to the need for an exterior drain.
2. For the second question about a basement walk - out floor drain, it must be tested for functional drainage to ensure it can effectively remove water. While having a trap, being tied into perimeter drainage, connection to a French drain or an indoor pipe, and connection to a minimum 4 - inch pipe are important aspects, the most fundamental requirement is to test its functionality.

Answer:

1. below grade, where the driveway slopes down toward the garage
2. must be tested for functional drainage