Large Transportation Terminal Facility — 476 Issues Found

Summary: The roof plan shows a parapet construction around the roof perimeter, which creates a condition where water can be entrapped. While primary roof drains are indicated at valley low points (circular symbols), there are no corresponding secondary (emergency overflow) drains or scuppers shown at the main drainage locations.

Why it matters: IBC 1502.2 mandates that where roof perimeter construction extends above the roof (entrapping water), secondary drainage must be provided to prevent structural overload. The drawing contains notes regarding 'OVERHANG DRAIN PIPES' for the canopy, but fails to show secondary drainage components (scuppers or secondary...

Suggested next step: Please clarify the method of secondary drainage for all roof areas. Provide locations and sizing for secondary drains or scuppers at all low points as required by IBC 1502.2 to prevent water entrapment.

RFI draft: Please clarify the method of secondary drainage for all roof areas. Provide locations and sizing for secondary drains or scuppers at all low points as required by IBC 1502.2 to prevent water entrapment.

Summary: The drawing plans for Restrooms 108, 304, and 306 show doors located in corners with the latch side adjacent to a perpendicular wall. Drawing Note 7 explicitly sets this dimension to "MINIMUM OF 4 INCHES". This contradicts the accessibility requirements for maneuvering clearance at manual swinging doors. Per the referenced Building Code (which mandates accessibility compliance), doors require a minimum of 18 inche...

Why it matters: Failure to provide required maneuvering clearance will prevent wheelchair users from opening the doors, leading to failed inspections and the need to relocate walls or door frames during construction.

Suggested next step: Revise the door locations or partition layouts at Restrooms 108, 304, and 306 to provide the code-required latch side maneuvering clearance (18" typical for pull side). Update Note 7 to acknowledge accessibility exceptions.

RFI draft: Revise the door locations or partition layouts at Restrooms 108, 304, and 306 to provide the code-required latch side maneuvering clearance (18" typical for pull side). Update Note 7 to acknowledge accessibility exceptions.

Summary: The drawing explicitly instructs condensate to "spill onto the roof". IBC 1503.1 requires roof coverings to be installed in accordance with the manufacturer's approved instructions. The vast majority of roof membrane manufacturers (TPO, EPDM, etc.) prohibit the continuous discharge of HVAC condensate directly onto the roof surface as it can cause membrane deterioration, algae growth, and void the warranty.

Why it matters: Additionally, in freezing climates, discharging water onto the roof surface creates an ice hazard which can block drainage paths and damage the roof assembly.

Suggested next step: Confirm if the roofing manufacturer's warranty permits direct condensate discharge onto the membrane. If not (as is standard), revise design to route condensate to an approved sanitary drain or storm receptor.

RFI draft: Confirm if the roofing manufacturer's warranty permits direct condensate discharge onto the membrane. If not (as is standard), revise design to route condensate to an approved sanitary drain or storm receptor.

Summary: General Note 1.I explicitly instructs the remote monitoring station to "call out to call list provided by the Owner" upon receipt of fire alarm signals. This specific sequence of operations omits the mandatory requirement for the supervising station to immediately retransmit alarm signals to the public fire service communications center (Fire Department). By defining a procedure that only references a "Call List,"...

Why it matters: IBC Section 901.6 requires fire protection systems to be monitored in accordance with NFPA 72. NFPA 72 mandates that the primary action of a supervising station upon receipt of an alarm is the immediate retransmission to the communications center. A "Call List" is typically used for supervisory/trouble signals or se...

Suggested next step: Revise Note 1.I to explicitly state that the remote monitoring station shall immediately retransmit fire alarm signals to the Public Fire Service Communications Center (Fire Department) prior to or simultaneously with notifying the the Owner call list, in accordance with IBC 901.6 and NFPA 72.

RFI draft: Revise Note 1.I to explicitly state that the remote monitoring station shall immediately retransmit fire alarm signals to the Public Fire Service Communications Center (Fire Department) prior to or simultaneously with notifying the the Owner call list, in a...

Summary: The drawing Key Note T1 explicitly specifies a '20'-0" 2" C. MAST' to be provided and anchored to the structural steel. A 20-foot tall mast constructed of 2-inch diameter material (conduit or pipe) is structurally insufficient to withstand wind loads required by IBC Section 1609 and the TIA 222 standard mandated by IBC Section 3108.1. Due to the high slenderness ratio and lack of bracing or guy wires shown, this s...

Why it matters: By prescriptively specifying an inadequate member size (2" nominal) for this height, the drawing restricts the contractor from providing a code-compliant structural design. This violates the safety requirements for rooftop towers.

Suggested next step: Revise the antenna mast specification (Note T1) to ensure structural compliance with IBC Section 3108.1 and TIA 222. The specified '20'-0" 2" C. MAST' is insufficient for a 20-foot unbraced span. Provide a structural design or performance specification (e.g., 'Mast designed by P.E. to TIA 222') and verify if guy wir...

RFI draft: Revise the antenna mast specification (Note T1) to ensure structural compliance with IBC Section 3108.1 and TIA 222. The specified '20'-0" 2" C. MAST' is insufficient for a 20-foot unbraced span. Provide a structural design or performance specification (e.g...

Summary: The 'Lighting Requirements' note explicitly states that 'all illuminated signs shall have dimmers with localized controls'. The sign package includes 'Overhead Sign Boxes' (A-1) and 'Terminal, Directional' sign faces (ST-101 - ST-150) which typically serve as required means of egress signage (directional exit signs). IBC Section 1013.5 requires that exit signs be 'illuminated at all times' to ensure continuous vis...

Why it matters: Allowing dimmers on life-safety signage violates the fundamental safety requirement for constant visibility of the exit path. If any sign in the 'A-1' or 'S-167' series functions as a directional exit sign, this note forces a code violation.

Suggested next step: Revise the lighting note to explicitly exclude Exit signs and Directional Exit signs from the dimmer requirement. Verify that all egress signage circuits are designed for constant illumination without local switching or dimming, in accordance with IBC 1013.5.

RFI draft: Revise the lighting note to explicitly exclude Exit signs and Directional Exit signs from the dimmer requirement. Verify that all egress signage circuits are designed for constant illumination without local switching or dimming, in accordance with IBC 1013.5.

Summary: P2.10 depicts the north wall horizontal main piping labeled as "4"SAN" (Sanitary), which is further confirmed by Keynote 11 ("4"SAN UP TO FLOOR CLEAN OUT") attached to it. However, the same drawing shows Keynote 10 ("4"ST UP") attached to risers connecting to this sanitary line. P2.11 confirms these risers are intended to be Storm, labeled "4" ST DN & RISE". Connecting Storm risers to a Sanitary main is a system c...

Why it matters: If installed as drawn on P2.10, storm water would drain into the sanitary sewer system, potentially causing overload/backup and violating plumbing codes. Clarification is needed on whether the main should be Storm (and Keynote 11/Label are wrong) or if a separate Storm line is missing.

Suggested next step: Confirm if the north wall piping on Level 00 (P2.10) is Sanitary or Storm. There is a conflict between the pipe label "4"SAN" and the connected risers tagged "4"ST UP". P2.11 shows these risers as Storm.

RFI draft: Confirm if the north wall piping on Level 00 (P2.10) is Sanitary or Storm. There is a conflict between the pipe label "4"SAN" and the connected risers tagged "4"ST UP". P2.11 shows these risers as Storm.

Summary: Detail 1 specifies "Spray Foam" (foam plastic insulation) within the exterior column joint. However, the detail does not show or label a thermal barrier (such as 1/2-inch gypsum wallboard) separating the foam plastic from the interior of the building. This violates IBC 2603.4, which mandates that foam plastic be separated from the interior by an approved thermal barrier to ensure fire safety.

Why it matters: Failure to provide a thermal barrier over foam plastic insulation creates a significant fire hazard and is a major code violation that will prevent occupancy permit approval. If the column is in a plenum, an ignition barrier would be the minimum, but the provided detail shows exposed foam.

Suggested next step: Please clarify the interior finish schedule for the exterior columns shown in Detail 1. Confirm compliance with IBC 2603.4 by adding a layer of 1/2-inch gypsum wallboard or other approved thermal barrier on the interior side of the spray foam insulation.

RFI draft: Please clarify the interior finish schedule for the exterior columns shown in Detail 1. Confirm compliance with IBC 2603.4 by adding a layer of 1/2-inch gypsum wallboard or other approved thermal barrier on the interior side of the spray foam insulation.

Summary: The building sections depict multiple interior occupied spaces (e.g., "RESTROOM", "PRIVATE SCREENING", "SECURITY SCREENING", "OFFICE") that are enclosed without access to exterior openings for natural ventilation. IMC 401.2 requires every occupied space to be ventilated. Since natural ventilation (IMC 402) is not feasible for these interior rooms, mechanical ventilation is required per IMC 403.1. Furthermore, IMC...

Why it matters: The omission is exacerbated by the low roof height shown in the sections ("ROOF 9'-3"" vs "LEVEL 1 0'-0""). This dimension leaves insufficient plenum space above a standard ceiling to run horizontal exhaust or supply ductwork to the exterior walls. Without vertical roof penetrations or adequate plenum space, there i...

Suggested next step: Confirm the method for providing code-required mechanical ventilation and exhaust for interior occupied spaces. Provide details for necessary rooftop equipment, exhaust fans, and duct routing. Coordinate these systems with the structural limitations indicated by the 9'-3" roof height, as current sections show no spa...

RFI draft: Confirm the method for providing code-required mechanical ventilation and exhaust for interior occupied spaces. Provide details for necessary rooftop equipment, exhaust fans, and duct routing. Coordinate these systems with the structural limitations indicat...

Summary: IBC Section 907.2 requires that not fewer than one manual fire alarm box be provided in an approved location to initiate a fire alarm signal. The Fire Alarm Construction Plan shows detailed locations for the Fire Alarm Control Panel (FACP), Annunciator, and automatic detectors, but fails to indicate a manual fire alarm box (pull station), typically required near the main exit or FACP.

Why it matters: The omission of a manual initiation device violates the minimum scoping requirements of Chapter 9. While Keynote T2 references an exterior Masterbox, this does not satisfy the requirement for an occupant-accessible manual fire alarm box for the building interior.

Suggested next step: Provide a manual fire alarm box at an approved location (typically near the main entrance/exit) to comply with IBC 907.2.

RFI draft: Provide a manual fire alarm box at an approved location (typically near the main entrance/exit) to comply with IBC 907.2.

Summary: The roof screen structural framing lacks a complete lateral force-resisting system in the transverse direction. The Plan view shows X-bracing (RS members) only in the longitudinal direction (Grid 1-8). Section B-B (the transverse view) depicts a rectangular frame with 'SHS60x60' columns and 'IPE140' beams. The column bases are detailed as simple 4-bolt pads (pinned bases) and the beam-to-column connections are sho...

Why it matters: Building code requires a continuous load path for lateral forces. Without transverse bracing or competent moment frames, the screen is subject to collapse under wind loads.

Suggested next step: Please provide the lateral load resisting system for the roof screen in the transverse direction (Section B-B). The current detail shows an unbraced frame with pinned bases. Add diagonal bracing or detail the beam-column joints and bases as moment-resisting connections with appropriate stiffness calculations.

RFI draft: Please provide the lateral load resisting system for the roof screen in the transverse direction (Section B-B). The current detail shows an unbraced frame with pinned bases. Add diagonal bracing or detail the beam-column joints and bases as moment-resisting...

Summary: The "CIRCUIT AND CONDUIT SCHEDULE" (Row G) explicitly specifies the conduit/installation method for "AC POWER TO PANELS" as "FREE-AIR" in both "INDOOR - CONCEALED IN NON-ACCESSIBLE WALLS/CEILINGS" and "INDOOR - CONCEALED IN ACCESSIBLE WALLS/CEILINGS". This contradicts IMC 602.2.1 which requires materials within plenums to be noncombustible or listed for such use (e.g., having a flame spread index of not more than...

Why it matters: Installing 120V AC power conductors "free-air" (without conduit) in ceiling spaces—particularly those used as return air plenums—introduces combustible materials and potential ignition sources into the air distribution system. This violates the safety intent of IMC 602.2.1 regarding plenum construction. Additionally...

Suggested next step: Revise the Circuit and Conduit Schedule Row G ("AC POWER TO PANELS") to specify an approved raceway (e.g., "EMT") for indoor concealed spaces instead of "FREE-AIR". Confirm that all wiring installed in ceiling plenums complies with IMC 602.2.1 requirements for combustibility and flame spread.

RFI draft: Revise the Circuit and Conduit Schedule Row G ("AC POWER TO PANELS") to specify an approved raceway (e.g., "EMT") for indoor concealed spaces instead of "FREE-AIR". Confirm that all wiring installed in ceiling plenums complies with IMC 602.2.1 requirements...

Summary: The details depict structural steel column members (shown as HSS clusters) wrapped directly in plywood and trim without any indication of fire-resistive materials (such as gypsum board encasement or spray-applied fireproofing). IBC Table 601 requires the Primary Structural Frame to have a fire-resistance rating (typically 1-3 hours for Types I, IIA, IIIA, etc.). The absence of fire protection in the detail implies...

Why it matters: Failure to provide required fire protection for primary structural members poses a critical life safety risk and violates the fundamental requirements of Table 601. Retrofitting fireproofing into the finished column enclosure (dimensioned at 11") after trim installation would be costly and disruptive.

Suggested next step: Clarify the fire-resistance rating required for the structural columns. If a rating is required per Table 601, please revise Details 1, 2, and 3 to show the necessary fire protection layers (e.g., gypsum board layers or spray fireproofing) inside the finish enclosure.

RFI draft: Clarify the fire-resistance rating required for the structural columns. If a rating is required per Table 601, please revise Details 1, 2, and 3 to show the necessary fire protection layers (e.g., gypsum board layers or spray fireproofing) inside the finish...

Summary: The drawing details a "Demising Wall" (implying a fire-resistance-rated assembly, further evidenced by the "Continuous Fire Tape" note) intersecting the underside of a metal roof deck. The detail explicitly calls for "Polyiso Flute Inserts" to fill the metal deck flutes directly above the wall. Polyisocyanurate is a combustible foam plastic. Code Section 715.3 requires joints at the intersection of fire-resistance...

Why it matters: Head-of-wall joints in fire-rated assemblies typically require mineral wool packing or spray-applied fire-resistive materials in the deck flutes to maintain the rating. Using combustible foam creates a direct path for fire and smoke propagation once the foam melts or burns.

Suggested next step: Revise the head-of-wall detail to replace 'Polyiso Flute Inserts' with mineral wool or an approved fire-resistive material (e.g., spray fireproofing) at the demising wall intersection to comply with IBC 715.3 and 707.9 for fire-rated joint continuity.

RFI draft: Revise the head-of-wall detail to replace 'Polyiso Flute Inserts' with mineral wool or an approved fire-resistive material (e.g., spray fireproofing) at the demising wall intersection to comply with IBC 715.3 and 707.9 for fire-rated joint continuity.

Summary: Detail 4 (Enlarged Detail @ Skirt) clearly depicts the exterior wall assembly layers. From exterior to interior (Left to Right), the assembly includes 'DIRECT APPLIED SIDING', 'SELF-ADHERED AWB', '1/2" PLY', and 'INSULATED SHEATHING' positioned inboard of the plywood, adjacent to the steel beam and 'LIGHT GAUGE METAL FRAMING PANEL'. This places the foam plastic insulation on the interior side of the assembly, effe...

Why it matters: Leaving foam plastic insulation exposed to the building interior or a connected cavity creates a significant fire hazard. Foam plastics can contribute rapidly to fire spread and smoke development. Without a thermal barrier, the assembly violates Chapter 26 of the IBC and would likely be rejected by the plan reviewer...

Suggested next step: Confirm the location and protection of the 'INSULATED SHEATHING' shown in Detail 4/MB-106. The drawing locates the foam insulation inboard of the plywood/framing without a thermal barrier. Please clarify if a 1/2-inch gypsum thermal barrier or equivalent ignition barrier will be provided to comply with IBC 2603.4, o...

RFI draft: Confirm the location and protection of the 'INSULATED SHEATHING' shown in Detail 4/MB-106. The drawing locates the foam insulation inboard of the plywood/framing without a thermal barrier. Please clarify if a 1/2-inch gypsum thermal barrier or equivalent ig...