Under what condition may compliance with the tiedown installation requirements be waived?

The correct answer states that compliance with the tiedown installation requirements may be waived upon submission of an alternative installation plan that is approved by a licensed architect or engineer. This reflects a critical aspect of housing safety and regulations, which allow for flexibility in meeting standards as long as there is professional oversight.

In many building and residential codes, tiedown systems are essential for ensuring that mobile homes are secured and can withstand environmental stresses, particularly from wind. However, the regulations also recognize that there may be specific circumstances or unique designs that warrant a different approach. By requiring an alternative plan to be submitted and approved by a licensed professional, the code ensures that any deviations from standard tiedown installation still maintain safety and structural integrity, thereby protecting residents.

This mechanism demonstrates a balance between regulation and innovation in construction practices, ensuring that safety is not compromised while allowing for unique solutions that could be more suitable for specific situations. The other options suggest either restrictions or conditions that do not capture this necessary professional oversight for compliance flexibility.