• Many Glacier Hotel at Glacier National Park, Montana

    DSC Workflows

Structural QA Checklist

Predesign

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All required deliverables submitted.
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Consistent with DSC Structural Design Standards.

Schematic Design

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All required deliverables submitted.
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Consistent with DSC Structural Design Standards.
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Correct Building Code used.
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Correct loads (Live, Snow, Wind Seismic) used.
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Floor framing system(s) appropriate for the structure.
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Roof framing system appropriate for the structure.
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Lateral force system appropriate for the structure.

Design Development (DBB or DB)

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All required deliverables submitted.
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Consistent with DSC Structural Design Standards.
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NPS structural standards followed.
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Correct Building Code used.
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Occupancy Category correct.
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Snow Load correct.
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Snow Load Importance Factor correct.
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Roof LL correct.
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Floor LL's correct.
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Wind Design parameters correct.
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Seismic Design Parameters correct.
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Foundation design consistent w/Geotech Report.
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Floor framing system(s) appropriate for the structure.
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Roof framing system appropriate for the structure.
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Lateral force system appropriate for the structure.
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Larger members for larger spans.
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Larger footings at more heavily loaded columns.
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Structural dimensions match Architectural drawings.
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Column orientation matches Architectural drawings.
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Column grid lines match Architectural drawings.
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Column and bearing wall locations match Architectural drawings.
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Complete and continuous load path for gravity loads.
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Complete and continuous load path for lateral loads.
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Outline specs provided for all required sections.

100% Draft Construction Documents (DBB) or 100% Draft Design-Build Construction Documents (DB)

General

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All required deliverables submitted.
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Consistent with DSC Structural Design Standards.
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Correct Building Code used.
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Floor framing system(s) appropriate for the structure.
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Roof framing system appropriate for the structure.
___
Lateral force system appropriate for the structure.
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Larger members for larger spans.
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Larger footings at more heavily loaded columns.
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Structural dimensions match Architectural drawings.
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Column orientation matches Architectural drawings.
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Column grid lines match Architectural drawings.
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Column and bearing wall locations match Architectural drawings.
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Complete and continuous load path for gravity loads.
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Complete and continuous load path for lateral loads.
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Support for mechanical and electrical equipment.

Loads

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Occupancy Category correct.
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Snow Load correct.
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Snow Load Importance Factor correct.
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Roof LL correct.
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Floor LL's correct.
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Floor LL reduction.
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Wind Design parameters correct.
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Seismic Design Parameters correct.
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Flood loads.
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Special loading conditions (cranes, heavy equipment, etc. (addressed).
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Requirements for special inspection shown.

Foundation

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Foundation design consistent with Geotechnical Report.
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Footing step elevations close.
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Foundation wall step elevations close.
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Hold down locations clearly shown.
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Seismic requirements for pile foundations.

Concrete

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Minimum concrete cover shown.
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Tie spacing and arrangement correct.
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Control joint spacing in slabs-on-grade.
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Expansion joints - floors, walls, roofs.
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Two mats of steel provided for walls 10" and thicker.
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Minimum compression member reinforcing 0.01Ag ≤ As ≤ 0.08Ag.
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Minimum foundation pedestal reinforcing 0.005Ag ≤ As.
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Minimum footing thickness 6" above bottom reinforcing on soil.
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Minimum footing thickness 12" above bottom reinforcing on piles.
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Retaining wall reinforcing shown in the correct locations.

Masonry

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Masonry dimensions modular.
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Control joint locations and spacing for masonry construction.
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Seismic detailing provided.

Steel

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Adequate stiffeners provided.
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Complicated/unusual connections detailed.
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Reactions/loads provided for connections not detailed.
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Base plates - 4 anchor bolts minimum.
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Minimum fillet weld size shown.
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Special loading conditions for steel bar joists shown.
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Bar joist connections at columns.
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Bar joist seat depth correct.
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Bar joist bridging shown.
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Bar joist bridging connection to wall or frame.
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Weld pattern for steel decks shown.
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Sidelap and endlap fastening.
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Steel decking continuous over three spans.

Wood

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Notches and holes.
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Truss bottom chords braced for compression due to load reversals.
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Truss profiles provided for prefab trusses.
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Truss loading requirements shown.
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Permanent bracing of prefab trusses shown.
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Cross grain bending and tension avoided.
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Nailing schedule provided.
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Diaphragm and shearwall nailing shown.
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Top plate splice detail shown.
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Roof diaphragm shear transfer to shearwalls shown.

Specs

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Contracting Officer vs. Engineer.
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All required specification sections provided.
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Shoring and bracing of excavations.
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Compaction testing frequency.
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Appropriate cement type.
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Water-cement ratio 0.45 max.
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Testing frequency.
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Mortar and grout specified correctly.
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Wood treatment - no CCA.
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Materials conform to structural standards.

Calcs

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Deflection limits correct.
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Concrete and masonry wall anchorage.
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Partition live load included.
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Folding partitions accounted for.
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Load combinations used correctly.
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Roof DL corrected for slope.
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Unbalanced snow loading.
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Snow drifting.
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Minimum wind pressure 10 psf for MWFRS.
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Minimum wind pressure 10 psf for components & cladding.
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Enclosed vs. partially enclosed.
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Wind uplift addressed.
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R, Ω, and Cd correct.
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Ponding on flat roofs.
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Flexural strength reduction.
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Moment magnification considered for concrete columns.
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Crack control for reinforced concrete structures.
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"Rolling" forces considered for purlins.
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Second order effects considered for steel frames.
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Load duration factors applied correctly for timber design.

100% Complete Construction Documents (DBB) or 100% Complete Design-Build Construction Documents (DB)

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All required deliverables submitted.
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All review comments from 100% Draft Review satisfactorily resolved.
 

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