UpCodes logo
// CODE SNIPPET

Section 1618 Loads on Temporary Installations

Go To Full Code Chapter
1618.1 General
Installations governed by this code shall be defined as temporary when such installations are intended to be taken apart or removed after a limited period following their installation, including, but not limited to, tents, scaffolds, sidewalk sheds, cranes, and run back structures. Temporary installations shall comply with all the provisions of this code, except as described in Sections 1618.1.1 through 1618.3.2.
1618.1.1 Duration
Such limited period shall not exceed one year for temporary installations used in construction operations covered by Chapter 33. For temporary installations covered by Section 3103, the limited period shall not exceed ninety days. The limited period shall be counted from the date the temporary installation is substantially installed.
1618.1.1.1 Extension of Time
Subject to the approval of the commissioner, a request to extend the time for a temporary installation, subject to the limits in Section 1618.1.1, shall be accompanied by the submission of a report from a registered design professional that certifies the following:
  1. Such registered design professional performed an inspection within the last 30 days to confirm that the installation complies with the requirements of the approved construction documents for the temporary installation; and
  2. The action plan required by Section 1618.3:
    1. Is still in effect;
    2. Has been revised to reflect the current conditions of the installation; or
    3. Is no longer required, as the installation has been retrofitted to comply with the loads for new construction without any reduction, pursuant to Section 1618.2.
1618.1.2 Construction Documents
Any temporary installation utilizing the exemptions and load reductions in the structural design shall be prominently indicated on drawings as temporary, and all reduced loads shall be indicated on the drawings. The environmental load mitigations shall be indicated on the construction documents. The construction documents shall be maintained at the site of the temporary installation and be available to the department upon request.
1618.2 Loads
Temporary installations shall be designed and constructed to resist the loads required by Chapter 16 of this code for new construction.

Exception: Temporary installations that are accompanied by an action plan in accordance with Section 1618.3 shall be permitted to reduce the design environmental loads required by Chapter 16 of this code as follows:
  1. Seismic. Temporary installations shall be permitted to use 2 percent of the design dead and live load in lieu of the seismic forces required by Section 1614 in load combinations including seismic forces. This load shall be distributed in proportion to the design loads, shall be applied in any horizontal direction and need not be combined with other environmental loads.
  2. Wind. The wind design for temporary installations shall be computed as required by Section 1609. The basic wind speed used to design the structure shall be permitted to be reduced by applying a factor of 0.8.
  3. Other environmental forces. Other environmental forces, including, but not limited to, snow, ice, and temperature differential effects, shall be permitted to be reduced as appropriate for the limited exposure of the installation.
1618.3 Action Plan
All temporary installations reducing the design environmental loads in accordance with Section 1618.2 shall include environmental load mitigation measures as part of an action plan. The action plan measures shall be indicated on the drawings.
1618.3.1 Implementation
The action plan shall be such that it may be reliably implemented in one day's notice or less as appropriate for the actions.
1618.3.2 Components
The action plan shall, at a minimum, include the following:
  1. Threshold of predicted environmental loads;
  2. Method of monitoring environmental loads;
  3. Party responsible for monitoring loads and determining implementation of action plan;
  4. Party responsible for effectuating the action plan;
  5. Evacuation procedures;
  6. Safety zone, standoff distance or standoff perimeter as appropriate. Safety zone, standoff distance or standoff perimeter shall not extend beyond the property line;
  7. Any other activities, such as the addition or removal of structural and/or nonstructural elements, removal of loads or creating sacrificial elements so that the structure may resist unreduced forces as required for permanent structures;
  8. Plan to prevent wind-born debris; and
  9. Verification that the design and procedures shall not adversely impact other structures.

Related Code Sections

1618.3.2 Structural Design, Components
The action plan shall, at a minimum, include the following: Threshold of predicted environmental loads; Method of monitoring environmental loads ...
1618.1.1.1 Structural Design, Extension of Time
Subject to the approval of the commissioner, a request to extend the time for a temporary installation, subject to the limits in Section 1618.1.1 ...
1618.3.1 Structural Design, Implementation
The action plan shall be such that it may be reliably implemented in one day's notice or less as appropriate for the actions ...