Multifamily Apartments: 108 Issues Found
A comprehensive plan review of a multifamily apartment building uncovered 108 issues—including missing beam schedules, unprotected vertical openings, and exit sign omissions—before construction.
The Project
A multifamily apartment complex with amenity spaces. InspectMind performed a comprehensive plan review of the architectural and structural drawings, identifying missing beam schedules for Level 2, unprotected vertical openings at glass railings, missing exit signs at stairways, and extensive coordination issues before construction.
Critical Findings (26)
Drawing S-102 (Overall Floor Framing Plan - Level 2) Note 3 explicitly refers to 6/S-301 for the Beam Schedule. However, the Beam Reinforcing Schedule on S-301 only contains entries for "LEVEL 1" and "LEVEL 3". There are no beams defined for Level 2 in the referenced schedule, leaving the beam marks (BX) on the Level 2 plan undefined.
The Reflected Ceiling Plan (RCP) fails to indicate exit signs at the entrance to the required exit stairway, contradicting the building code and the sheet's own legend. IBC Section 1013.1 requires all exits and exit access doors to be marked by an approved exit sign. While the 'RCP SYMBOL LEGEND' (View 06) clearly defines a symbol for 'EXIT SIGN' (a circle with a filled sector), this symbol is missing from the plan view (View 03) at the 'STAIR' location (Grid 13), which is a designated exit ('DN' indicated on floor plan).
The plan shows a 'GLASS RAILING' along the edge of the 'COWORKING LOUNGE' (Room 2CW1), separating it from an area labeled 'OPEN TO BELOW'. IBC Section 712.1 mandates that all vertical openings must be protected, typically by a shaft enclosure (Section 713). A glass railing alone does not provide the required fire-resistance-rated enclosure. Unless this area is a compliant Atrium or Mezzanine, a rated separation is required.
Plans 2 and 3 specify the use of "(3) 9 1/4" LVL" (Laminated Veneer Lumber) headers spanning openings within the CMU core walls at Levels 4 through 7. As these are continuous vertical shafts for stairs and elevators, the masonry wall construction continues above these headers to the next floor/roof levels. The drawing indicates structural masonry bearing on wood members.
Detail 8 (West Shear Wall) depicts a concrete wall spanning from Level P1 (El. 90'-0") to Level 1 (El. 100'-0"). Based on the Keyplan showing Stair 4 at the building perimeter and the level designations (P1 typical for basement), this wall acts as a foundation wall retaining approximately 10 feet of soil. Note 1 requires horizontal reinforcement to be "CENTERED IN WALL" for 10" walls. Centered reinforcement provides negligible effective depth (d) for resisting out-of-plane bending moments caused by lateral soil pressure, creating a high risk of flexural failure or severe cracking.
Sample High Priority Findings (24 Total)
S-200 Note 6 generally permits 'ALL HORIZONTAL CONSTRUCTION JOINTS' in shear walls (which include link beams per S-200 Note 5) without exception. However, S-290 Detail 4 Note 2 explicitly prohibits construction joints within link beams. This creates a direct contradiction regarding whether the horizontal joints permitted in the shear walls are allowed to extend through the link beam sections.
S-270 Note 4 explicitly requires that lap splices between bars of different sizes be a Class 'B' lap based on the *larger* bar diameter. However, S-290 Detail 16 (referenced by S-270 Note 3 for splice details) states to provide a Class 'B' lap of the *smaller* bar (or development length of the larger), which creates a direct contradiction in determining the required splice length.
There is a dimension discrepancy between the Stair 7 specific plan on A-487 and the Enlarged Interior Plan on A-606 for the same Level 1 area. A-487 shows a dimension of 12'-0" and 7'-7 7/8", while A-606 shows 12'-4" and 7'-8 1/8" respectively. This 4-inch difference in the long dimension likely relates to wall thickness inclusions (e.g., CMU face vs core) or clear width definitions, but creates ambiguity in the constructed size of the stair shaft.
S-101 Note 10 explicitly states that column sizes on the plan indicate "Structural Steel Columns". However, the S-101 framing notes define the system as a Post-Tensioned Concrete Slab, and the referenced detail sheet S-301 includes Detail 15 "Typical Column Splice at Beam", which depicts a reinforced concrete column connection. This creates a contradiction regarding whether the vertical structural elements are steel or concrete.
S-272 Shear Wall Note 11 references 'DETAIL 1/S-301 FOR TYPICAL TRIM STEEL REQUIREMENTS AT RECTANGULAR BLOCK OUTS.' However, Sheet S-301 does not contain a Detail 1. The details present on S-301 are numbered 4, 6, 9, 10, 11, 13, 14, 15, 16, 17, 19, and 20. The detail on S-301 that provides trim steel requirements at openings in concrete walls is Detail 11, titled 'CONCRETE WALL ELEVATION - TRIM STEEL AT OPENINGS.' The reference appears to contain a typographical error (1 instead of 11).
The “SHEAR WALL NOTES” are duplicated on both S-270 and S-271, but they reference different detail sheet numbers for the same requirements. For trim steel at block outs/sleeved openings, S-270 points to details on S-311 and S-301, while S-271 points to details on “S-3.1”. For elevator divider and hoistway beam connections, S-270 points to “11/S-400” while S-271 points to “13/S-400”. These are direct cross-reference contradictions for the same scope.
The plan shows an interior 'STAIR' connecting levels (indicated by 'DN'), which constitutes a vertical shaft. IBC Section 713.4 requires such shafts to be enclosed with fire barriers (per Section 707). The drawing depicts the stair walls with standard thin partition lines indistinguishable from non-rated office walls, whereas the nearby elevator shaft correctly uses heavy hatched lines. This visual representation suggests a non-rated assembly, which would violate the code.
The UNISEX RR is shown with PT2 wall finish. Interior Finish General Note 2 states 'ALL GYPSUM BOARD WALLS TO RECEIVE (PT-1) EGGSHELL SHEEN U.N.O.', establishing that PT-prefixed tags indicate paint finishes on gypsum board walls. Section 1210.2.2 requires walls within 2 feet of water closets to have a 'smooth, hard, nonabsorbent surface' to a height of not less than 4 feet, with materials 'not adversely affected by moisture.' Paint on gypsum board does not meet these requirements as gypsum board is adversely affected by moisture and paint does not constitute a hard, nonabsorbent surface. The exception for toilet rooms 'not accessible to the public' does not apply to a fitness facility restroom accessible to members.
Plan General Note 6 instructs the contractor to "provide sweeped washes at a 1:12 slope" at door locations to plane out with the sloped parking deck. This conflicts with building code accessibility requirements. Per IBC 1102.1 and 1104.1, accessible routes must comply with ICC A117.1. ICC A117.1 Section 404.2.4.4 requires that the floor or ground surface within door maneuvering clearances have a slope not steeper than 1:48 (2%). A 1:12 (8.3%) slope immediately at the door location eliminates the required level landing, making the door non-compliant for accessibility.
The drawing explicitly labels a door as 'CONCEALED DOOR' connecting the Hidden Lounge to the Clubhouse. Section 1010.1 of the IBC requires that doors in the means of egress 'shall be readily distinguishable from the adjacent construction and finishes such that the doors are easily recognizable as doors.' A concealed door, by standard architectural definition, is designed to blend into surrounding construction and not be readily apparent, which directly contradicts this code requirement. As the Hidden Lounge is an occupied assembly space with the concealed door providing access to the Clubhouse (which connects to the corridor and exits), this door would serve an egress function.
Issue Categories
Structural
Structural issues found during plan review
Architectural
Architectural issues found during plan review
Fire Protection
Fire Protection issues found during plan review
Value Delivered
"The missing beam schedule for Level 2 would have halted structural framing entirely. Finding 108 issues—including 26 critical—before construction saved us from costly delays and rework."
— Project Team, Multifamily Development
