Final answer:
Frame scaffolds exceeding 4 times their base dimension must have additional support to ensure stability and safety, as per OSHA standards.
Step-by-step explanation:
Frame scaffolds which exceed 4 times their narrowest base dimension shall be allowed with additional support. OSHA has specific safety guidelines for the use of scaffolding in construction and general industry. Scaffolds are considered safe when they are constructed and used in accordance with OSHA standards. For frame scaffolds to exceed their base height ratio, they must have additional support such as outriggers, ties, or bracing to prevent tipping. Without such support, they are likely to be unstable and pose a serious safety risk.