Structural Quality Assurance Checklist

Predesign

• Required deliverables submitted

Schematic Design

• Required deliverables submitted
• Correct Building Code used
• Correct loads (Live, Snow, Wind Seismic) used
• 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
• Construction materials consistent with building type identified in code analysis (Types I, II, III, IV, V)
• Occupancy Category correct (Table 1604.5)
• Snow Load correct (1608)
• Snow Load Importance Factor correct (ASCE 7-05 Table 7-4)
• Roof LL correct (1607.11)
• Floor LL's correct (Table 1607.1)
• Wind velocity correct (Fig 1609)
• Wind exposure correct (1609.4)
• Wind Load Importance Factor correct (ASCE 7-05 Table 6-1)
• Seismic S_s and S_l correct (Fig. 1615(1) et al)
• Seismic Load Importance Factor correct (ASCE 7-05 Table 11.5-1)
• Foundation design consistent w/Geotech Report
• Footing extends below frost depth
• 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 Architectural drawings
• Column grid lines match Architectural drawings
• Column and bearing wall locations match Architectural drawings
• Complete and continuous load path for gravity loads (1604.4)
• Complete and continuous load path for lateral loads (1604.4)
• 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
• Construction materials consistent with building type identified in code analysis (Types I, II, III, IV, V)
• 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 Architectural drawings
• Column grid lines match Architectural drawings
• Column and bearing wall locations match Architectural drawings
• Complete and continuous load path for gravity loads (1604.4)
• Complete and continuous load path for lateral loads (1604.4)
• Support for mechanical and electrical equipment

Loads

• Ocupancy Category correct (Table 1604.5)
• Snow Load correct (1608)
• Snow Load Importance Factor correct (ASCE 7-05 Table 7-4)
• Roof LL correct (1607.11)
• Floor LL's correct (Table 1607.1)
• Floor LL reduction (1607.9)
• Wind velocity correct (Fig 1609)
• Wind exposure correct (1609.4)
• Wind Load Importance Factor correct (ASCE 7-05 Table 6-1)
• Internal Pressure Coefficient Gcpi (ASCE 7-05 Table 6-7)
• Seismic S_s and S_l correct (Fig. 1615(1) et al)
• Seismic Load Importance Factor correct (ASCE 7-05 Table 11.5-1)
• Seismic Site Class correct (ASCE 7-05 11.4.2)
• Seismic Design Category correct (ASCE 7-05 Tables 11.6-1, 11.6-2)
• Flood loads (1612)
• Special loading conditions (cranes, heavy equipment, etc. (addressed))
• Requirements for special inspection shown

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
• Foundation wall step elevations close
• Hold down locations clearly shown
• Seismic requirements for pile foundations

Concrete

• Minimum concrete cover shown (ACI 318-05 7.7)
• Tie spacing and arrangement correct (ACI 318-05 7.10.5.2)
          16d_b longitudinal bars
          48d_b tie wire
          least dimension of tie wire
• Development length correct  (ACI 318-05 12.2)
• Reinforcing continuity for negative moment areas (ACI 318-05 12.10.5)
• Control joint spacing in slabs-on-grade (24t is approximate)
• Expansion joints – floors, walls, roofs
• Two mats of steel provided for walls 10" and thicker (ACI 318-05 14.3.4)
• Minimum compression member reinforcing 0.01Ag ≤ As ≤ 0.08Ag (ACI 318-05 10.9.1)
• Minimum foundation pedestal reinforcing 0.005Ag ≤ As (ACI 318-05 15.8.2.1)
• Minimum footing thickness 6" above bottom reinforcing on soil (ACI318-05 15.7)
• Minimum footing thickness 12" above bottom reinforcing on piles (ACI318-05 15.7)
• Retaining wall reinforcing shown in the correct locations

Masonry

• Masonry dimensions modular
• Control joint locations and spacing for masonry construction
• Bond beams shown correctly
• Seismic requirements (ACI 530-05 1.14)

Steel

• A992 for W and Wt shapes
• Adequate stiffeners provided
• 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 seat depth correct
• 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

Wood

• Notches and holes (2308.8.2, 2308.9.10, 2308.9.11, 2308.10.4.2)
• 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

• Contracting Officer vs. Engineer
• 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)
• Stress increases (1605.3.1.1)
• Partition live load included (1607.5)
• Folding partitions accounted for
• Load combinations used correctly (1605.3)
• Roof DL corrected for slope
• Unbalanced snow loading (ASCE 7-05 7.6)
• Snow drifting (ASCE 7-05 7.7)
• Minimum wind pressure 10 psf for MWFRS (ASCE 7-05 6.1.4.1)
• Minimum wind pressure 10 psf for components & cladding (ASCE 7-05 6.1.4.2)
• Enclosed vs. partially enclosed
• Wind uplift addressed
• R, Ω, and C_d correct (AASCE 7-05 Table 12.2-1)
• Retaining walls (no requirement for F.S. > 1.5 for sliding and overturning) (1610.1)
• Ponding on flat roofs (1611.2)
• Flexural strength reduction (ACI318-05 9.3.2)
• Moment magnification considered for concrete columns (ACI 318-05, 10.11, 10.12, 10.13)
• Crack control for reinforced concrete structures (ACI 318-05 10.6.4)
• "Rolling" forces considered for purlins
• Second order effects considered for steel frames
• 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