Structural Quality Assurance Checklist

Predesign

• Required deliverables submitted

Schematic Design

• Required deliverables submitted
• Floor framing system(s) appropriate for the structure
• Roof framing system appropriate for the structure
• Lateral force system appropriate for the structure

Design Development

• Required deliverables submitted
• NPS structural standards followed
• Correct Building Code used
• Snow Load correct (1608)
• Roof LL correct (1607.11)
• Floor LL’s correct (Table 1607.1)
• Wind velocity and exposure correct (Fig 1609; 1609.4)
• Seismic Ss and Sl correct     (Fig. 1615(1) et al)
• Frost depth correct
• Foundation design consistent with Geotechnical Report
• Floor framing system(s) appropriate for the structure
• Roof framing system appropriate for the structure
• Lateral force system appropriate for the structure
• Larger members for larger spans
• Larger footings at more heavily loaded columns
• Structural dimensions match Architectural drawings
• Column orientation matches with Architectural drawings
• Column grid lines match with Architectural drawings
• Column and bearing wall locations match with Architectural drawings
• Complete and continuous load path for gravity loads
• Complete and continuous load path for lateral loads
• Outline specs provided for all required sections

100% Draft Construction Documents or 100% Draft Design-Build Construction Documents

General

• Required deliverables submitted
• NPS Structural standards followed
• Correct Building Code used
• Floor framing system(s) appropriate for the structure
• Roof framing system appropriate for the structure
• Lateral force system appropriate for the structure
• Larger members for larger spans
• Larger footings at more heavily loaded columns
• Structural dimensions match Architectural drawings
• Column orientation matches with Architectural drawings
• Column grid lines match with Architectural drawings
• Column and bearing wall locations match with Architectural drawings

Loads

• Snow Load correct (1608)
• Roof LL correct (1607.11)
• Floor LL’s correct (Table 1607.1)
• Wind velocity and exposure correct (Fig 1609; 1609.4)
• Wind Importance Factor correct     (Table 1604.5)
• Wind Quality Assurance Plan (Exp A & B V3s > 120 mph, Exp C & D V3s > 110 mph) provided (1706)
• Seismic S_s and S_l correct     (Fig. 1615(1) et al)
• Seismic use group correct (1612.2)
• Seismic site class correct     (Table 1615.1.1)
• Seismic Importance Factor correct (Table 1604.5)
• Seismic Design Category correct     (Tables 1616.3(1)(2))
• R, _, and C_d correct (Table 1617.6)
• Seismic Resistance Quality Assurance Plan provided (1705)
• Complete and continuous load path for gravity loads
• Complete and continuous load path for lateral loads
• Support for mechanical and electrical equipment
• Special loading conditions (cranes, heavy equipment etc.) addressed
• Folding partition loads accounted for
• Load combinations used correctly

Foundation

• Foundation design consistent with Geotechnical Report
• Footing extends below frost depth (1805.2.1)
• Minimum footing width (1805.4.1)
• Footing step elevations close
• Seismic requirements for pile foundations
• Hold down locations clearly shown

Concrete

• Minimum concrete cover shown     (ACI 318-99 7.7)
• Tie spacing and arrangement correct
• Development length correct (ACI 318-99 12.2)
• Reinforcing continuity for negative moment areas
• Moment magnification considered for concrete columns (ACI 318-99 10.11,.12,.13)
• Control joint spacing in slabs-on-grade
• Expansion joints – floors, walls, roofs
• Crack control for reinforced concrete structures     (ACI 318-9910.6.4)
• Two mats of steel provided for walls 10" and thicker (ACI 318-99 14.3.4)
• Retaining wall reinforcing shown in the correct locations

Masonry

• Masonry dimensions modular
• Control joint locations and spacing for masonry construction
• Bond beams shown correctly

Steel

• Correct materials used A992 vs. A36
• Adequate stiffeners provided for steel members
• “Rolling” forces considered for purlins
• Second order effects considered for steel frames
• Complicated/unusual connection detailed
• Reactions/loads provided for connections not detailed
• Base plates – 4 anchor bolts minimum
• Minimum fillet weld size shown     (AISC 9th Table J2.4)
• Special loading conditions for steel bar joists shown
• Bar joist connections at columns
• Bar joist bridging shown
• Bar joist bridging connection to wall or frame
• Weld pattern for steel decks shown
• Sidelap and endlap fastening
• Steel decking continuous over three spans
• Requirements for special inspection shown

Light Gage

Wood

• Notches and holes (2308.8.2)
• Truss bottom chords braced for compression due to load reversals
• Truss profiles provided for prefab trusses
• Truss loading requirements shown
• Permanent bracing of prefab trusses shown
• Cross grain bending and tension avoided
• Nailing schedule provided (Table 2304.9.1)
• Diaphragm and shearwall nailing shown
• Top plate splice detail shown
• Roof diaphragm shear transfer to shearwalls shown

Specs

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

Calcs

• Deflection limits correct (Table 1604.3)
• Concrete and masonry wall anchorage > 200 plf (1604.8.2)
• 1/3 allowable stress increase not allowed if basic load combinations used (1605.3.1.1)
• Partition live load included (1607.5)
• Live load reduction (1607.9)
• Roof DL corrected for slope
• Unbalanced snow loading (1608.6)
• Snow drifting (1608.7)
• Minimum wind pressure 10 psf for MWFRS and components & cladding (1609.1.2)
• Enclosed vs. partially enclosed
• Wind uplift addressed
• Retaining walls F.S. > 1.5 for sliding and overturning (1610.2)
• Ponding on flat roofs (1611.2)
• Flood loading when required (1612)
• Load duration factors applied correctly for timber design (NDS-2001 Table 2.3.2)
• Allowable stress adjustment factors (NDS) applied correctly (NDS-2001 Table 4.3.1)

Submit 100% Complete Construction Documents or 100% Complete Design-Build Construction Documents for Final Approval

• Required deliverables submitted
• All review comments from 100% Draft Review satisfactorily resolved