• Structural Plan Requirements

    The components of a Structural Plan include the following as they apply to your project. Your building plan reviewer will provide information on more specific requirements.

    • Cross Sections and Details
    • Foundation Plan
    • Roof, Deck and Floor Framing Plans
    • Structural Notes

    Refer to Electronic Document Submittal Standards and Electronic Review Efficiency for PDF submittal standards.

    Commercial Building Permits

    1. Show typical wall and floor sections with all materials labeled. Indicate size, spacing and structural grading of all members. Include all dimensions. Show insulation, sheathing, connections, siding, etc. Show wall/floor assemblies and fire resistive ratings. Call out the approval agency and listing number for rated assembly.
    2. Show a typical roof section with all materials labeled. Indicate size, spacing and grading of all members. Include all dimensions, venting, insulation, connections, sheathing, type of roofing and slope of roof. Show scupper, overflow and downspout locations and details.
    3. Show a typical foundation section with all materials labeled. Indicate size and spacing of all members and all dimensions. Include foundation wall thickness, reinforcing bar size and spacing, reinforcing bar clearance, footing depth below grade, clearance between grade and sill plate, maximum wall height, connections, anchor bolt size and spacing, connection between floor diaphragm and foundation, slab thickness, slab or floor insulation, and drainage for foundation retaining wall.
    4. Show all vertical and horizontal fire barriers and/or fire wall assemblies.
    5. Show all connection details, including post-beam, post-footing, wall-footing, wall-ceiling, wall-roof, collar ties, strong backs, etc. Interior non-bearing walls should be braced to structure above at not less than 8 feet o.c.
    6. Provide cross sections and details as necessary to show how access by disabled persons will be provided (refer to the International Building Code, Chapter 11, including state amendments).
    7. Show a section of the stairs. Include rise, run, handrail height and grasp dimensions; distance between any intermediate rails; fire blocking; minimum headroom; and landing size. Specify a minimum one- hour fire protection for usable space under the stairs.

    Tenant Improvement Permits

    1. Show typical construction of interior walls and one-hour corridors (wall and ceiling).
    2. Show typical construction of walls, ceiling assemblies and connections. Include wall and ceiling ratings, material type and thickness, size and spacing, etc.; for fire-resistive construction, indicate UL, ESR or ICC assembly approval number.
    3. Provide seismic bracing details for suspended ceilings, lighting fixtures, and mechanical equipment per ASTM 635 and 636. Suspended ceilings shall be seismically braced by an engineered design or CISCA guidelines. IBC Sec. 808.1.1.1.
    4. Show all vertical and horizontal fire barriers and/or fire wall assemblies.
    5. Provide cross sections and details as necessary to show how access by disabled persons will be provided (refer to the International Building Code, Chapter 11, including state amendments).

    Single Family Building Permits

    1. Show a typical wall section with all materials labeled. Indicate size, spacing, and structural grading of all members. Include all dimensions. Show insulation, sheathing, connections, siding, weather resistive and vapor barriers, interior wall coverings, etc.
    2. Show a typical roof section with all materials labeled. Indicate size, spacing and grading of all members. Include all dimensions, venting, insulation, connections, sheathing, type of roofing and slope of roof. Show scupper, overflow and downspout locations and details.
    3. Show a section of the fireplace, including hearth and hearth extension. Include dimensions, materials, clearance from combustibles, height above roof, reinforcing, seismic anchorage and foundation details.
    4. Show all connection details, including post-beam, post-footing, wall-footing, wall-ceiling, wall-roof, collar ties, strong backs, etc.
    5. Show a section of the stairs. Include rise, run, and handrail height and grasp dimensions; distance between any intermediate rails; fire blocking; minimum headroom; and landing size. Specify a minimum  ½-inch gypsum board protection for enclosed, usable space under the stairs.

    Foundation Plan

    Provide those items that are applicable to your project.

    1. Show the foundation plan, shape, and all dimensions, including maximum wall height(s) and all connections. Provide typical foundation sections at various points around the foundation system. Include the height of any unbalanced retained soil. Provide a connection between the existing and the proposed foundation.
    2. Show the location and size of beams, posts, interior footings and connections.
    3. If the crawl space is included, show the location and size of all vents and the access size and location.
    4. Show a typical foundation and floor section with all materials labeled. Indicate size and spacing of all members and all dimensions. Include wall and footing dimensions, reinforcing bar size/spacing/clearance, footing depth below grade, clearance between grade and sill plate, maximum wall height, connections, anchor bolt size and spacing, connection between floor diaphragm and foundation, slab thickness, slab or floor insulation, and drainage for foundation retaining wall.
    5. Show and label the space within the foundation (e.g., basement, garage, recreation room).
    6. Retaining structures higher than four feet require an engineered design with calculations.
    7. Show the soil classification and the design-bearing capacity on the plans. A geotechnical report may be required where unstable soils conditions exist.
    8. Engineered Foundation: Stamped engineered plans with calculations are required for non-conventional foundation systems and/or sites with special soils conditions.

    Mobile Structure Foundation

    1. Show foundation plan, shape, and all dimensions. Provide a typical foundation section.
    2. Show the location and size of beams, posts, and interior footings and their dimensions and connections.
    3. Engineered Foundation: Stamped engineered plans with calculations are required for non- conventional foundation systems and/or sites with special soil conditions.
    4. Show a layout and detailing of the anchoring or bracing system, showing cables, rods, tie- downs, or dead men. Provide approval/testing information per industry standards.
    5. Show how access by disabled persons will be provided (when required). Show the location and signage for disabled parking stalls. Show the design of ramps, landings, and handrails.
    6. Show a section of the stairs. Include rise, run, handrail height and grasp dimensions. Indicate the distance between any intermediate rails. Show landing or deck framing and size.

    Roof, Deck and Floor Framing Plan

    1. Show joist and rafter sizes, spacing, direction, supports, connections, blocking, etc.
    2. Bracing and Bearing Walls: Identify the lateral support and show the location and details of the walls and/or post-beam support and connection to the foundation.
    3. Show mechanical equipment location, weight and screening. Provide a structural design to accommodate the equipment and show visual screening.
    4. Show all header sizes for doors, windows and other openings.
    5. Show connections for all framing elements in structural details.

    For commercial building permits:

    1. Specify all design loads. Include live (including floor, stair, etc.), dead (including mechanical equipment, materials, etc.), wind, earthquake, snow, equivalent fluid pressure, soil bearing values and geotechnical engineering parameters.
    2. Specify grading and species of all framing lumber, including sheathing.
    3. Specify GLU-LAM beam stress grade and combination symbols.
    4. Indicate concrete design strength and mix, reinforcing steel grade and ASTM designation, reinforcing steel cover, etc.
    5. Specify allowable stresses in structural steel, bolts, ASTM designation, etc.
    6. Specify class of mortar to be used, mortar proportions, and allowable stress of mortar. Specify grade and class of masonry units to be used and allowable stress of masonry units.
    7. Specify all welding to be done by WABO-certified welders or WABO-certified fabrication shops.
    8. Structural steel details must be submitted for approval prior to fabrication.
    9. Specify the special inspections required for the type of construction, as outlined in the International Building Code Chapter 17.

    For residential building permits:

    1. Specify all design load values, including dead, live, snow, wind, lateral retaining wall pressures, and soil bearing values.
    2. Specify grading and species of all framing lumber, including sheathing.
    3. Specify GLU-LAM beam stress grade and combination symbols.
    4. Specify maximum design concrete strength, concrete sack mix and reinforcing bar grade.
    5. Specify metal connectors, including joist hangers, clips, post caps, post bases, etc.