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Weather Limitations: If there are weather-related limitations, they should be specified. If work will be performed during cold weather, special cold weather procedures should be specified (Figure 15). Work is not recommended unless temperatures are at least 40 degrees Fahrenheit and rising.
- Work Hour Limitations: If there are limitations to the hours or days that can be worked, this should be specified.
- Storage Areas: If there are limitations to on-site storage areas, this should be specified or shown on the drawings.
Load Limits: Specify the maximum allowable wheel load limits for roof application equipment, and specify the maximum allowable load (per square foot [per square meter]) for materials stored on the roof. Some rooftop equipment and some materials, such as pallets of pavers, are very heavy. Specifying load limits can minimize accidents due to exceeding live and dead load capabilities of the structure. Knowing load limits will allow the contractor to determine the appropriate type of equipment and material handling and storage techniques needed for the project. Care should be taken when storing materials on the roof to avoid overloading the structure.