Plan Review: 240 Issues Found

Summary: The Mechanical Schedules specify physical dimensions for the VAV boxes (Inlet Size and Maximum Box Size) that are significantly smaller than the connecting round ductwork shown on the floor plans. For example, TH506 is scheduled with a 6" inlet and 8" max box size, but is shown connected to 12"Ø ducts. Similarly, TH510 is scheduled with a 10" inlet and 12 1/2" max box size, but is shown connect...

Why it matters: This creates a physical clash and impossibility during installation. A 12" or 18" duct cannot be connected to a VAV box whose maximum overall dimension is 8" or 12.5", respectively. Using severe reducers contradicts standard aerodynamic design practices and would cause excessive static pressure d...

Suggested next step: Please review the scheduled VAV box sizes versus the ductwork layout. Are the VAV boxes undersized in the schedule, or are the connecting ducts oversized on the floor plans? Please provide coordinated VAV box sizes and connecting duct diameters.

RFI draft: Please review the scheduled VAV box sizes versus the ductwork layout. Are the VAV boxes undersized in the schedule, or are the connecting ducts oversized on the floor plans? Please provide coordinated VAV box sizes and connecting duct diameters.

Summary: Drawing T9.15.03 specifies a "2mm lead sheet" for the DF42.01 and DF42.01.A uneven swing leaded fire doors. However, the corresponding horizontal section detail for the leaded door assembly on drawing T9.15.07 specifies a lead sheet thickness of "e=1.5mm".

Why it matters: A discrepancy in radiation shielding thickness is a critical health and safety issue. If the thinner 1.5mm lead sheet is installed where 2mm is required, it could result in inadequate radiation protection and regulatory non-compliance. Conversely, procuring 2mm lead when 1.5mm is sufficient would...

Suggested next step: Please clarify the required lead sheet thickness for the DF42 leaded fire doors. Should the lead sheet be 1.5mm as shown in the door details, or 2mm as specified in the door elevations? Please provide the approved health physicist's shielding report to verify.

RFI draft: Please clarify the required lead sheet thickness for the DF42 leaded fire doors. Should the lead sheet be 1.5mm as shown in the door details, or 2mm as specified in the door elevations? Please provide the approved health physicist's shielding repo...

Summary: The equipment schedule for Lab ST lists a central laboratory table (FL005) with dimensions of 2700 x 1600 mm. However, the room layout plan illustrates only a single inward-swinging door for access. Based on the architectural door types (T9.15.03), the largest interior single fire door detailed (DF01.05) measures 1200 x 2200 mm. The 1600 mm depth of the FL005 table cannot physically pass throug...

Why it matters: If the 2700 x 1600 mm laboratory table is delivered fully assembled and cannot be broken down into sections smaller than the maximum single door width, it will be physically impossible to move the equipment into the room. This clash will cause significant delays during the equipment installation ...

Suggested next step: Please confirm if the FL005 central laboratory table (2700 x 1600 mm) will be delivered disassembled in sections that fit through a standard single door. If the unit is delivered fully assembled, please update the Lab ST room layout to include a double door assembly (such as D...

RFI draft: Please confirm if the FL005 central laboratory table (2700 x 1600 mm) will be delivered disassembled in sections that fit through a standard single door. If the unit is delivered fully assembled, please update the Lab ST room layout to include a d...

Summary: The Architectural equipment schedule specifies a Fume Cabinet 'WITH FAN' (indicating an integral fan). However, the Mechanical schedule provides central 'FUME EXHAUST FAN' and 'FUME EXHAUST SYSTEM' units. Using an integral fan in a ducted fume hood directly conflicts with the mechanical design strategy of utilizing remote utility exhaust fans, which are necessary to safely maintain negative pre...

Why it matters: Providing a fume cabinet with an integral fan while simultaneously connecting it to a mechanical remote exhaust system causes 'double fanning,' making air balance difficult and potentially pressurizing the exhaust ductwork within the building envelope (a critical laboratory safety hazard). Altern...

Suggested next step: Please clarify the exhaust strategy for Fume Cabinet FL010. Should the architectural equipment specification be revised to exclude the integral fan so it can safely coordinate with the Mechanical remote Fume Exhaust Systems, or is the hood intended to be a ductless model?

RFI draft: Please clarify the exhaust strategy for Fume Cabinet FL010. Should the architectural equipment specification be revised to exclude the integral fan so it can safely coordinate with the Mechanical remote Fume Exhaust Systems, or is the hood intende...

Summary: The Room Layout (T9.13.19) specifies room 15.02.04 as an "Orthopedic Clinic", a clinical space that typically requires lead-lined doors for radiation shielding during X-ray/fluoroscopy procedures. However, the Door Schedule (T9.15.11) assigns door type D01.05 to this room. According to the door details (T9.15.01), D01.05 is a standard solid wood door with a wood strips core and laminate finish,...

Why it matters: Installing a standard wood door in a clinical room that requires radiation shielding poses a severe health and life-safety risk to staff and patients in adjacent areas. This will also result in a failure to pass health department and radiation safety inspections prior to occupancy.

Suggested next step: Please confirm if radiation shielding is required for the Orthopedic Clinic (Room 15.02.04). If shielding is required, please revise the door schedule to specify an appropriate lead-lined door type (such as D38.01 or D40.01) instead of the standard D01.05 solid wood door.

RFI draft: Please confirm if radiation shielding is required for the Orthopedic Clinic (Room 15.02.04). If shielding is required, please revise the door schedule to specify an appropriate lead-lined door type (such as D38.01 or D40.01) instead of the standar...

Summary: The Room Layout Sheet designates room 1.01.24 as a 'Resuscitation (Trauma) Room'. However, the Doors Description and Schedule assigns door type D07.04 to this room. The detail for D07.04 specifies a standard 'wooden body' door without any lead-lining or hermetic sealing. This conflicts with the specialized functional requirements (such as radiation shielding and hermetic sealing) typically nece...

Why it matters: Installing standard wooden doors in a trauma room compromises clinical safety by failing to provide necessary radiation protection or infection control. The door schedule must be coordinated with the room's functional requirements, likely necessitating a change to a specialized lead-lined or herm...

Suggested next step: Please confirm if the door type for Resuscitation (Trauma) room 1.01.24 should be revised in the Doors Schedule. Should the standard solid wood door (D07.04) be updated to a specialized lead-lined or hermetic door type to meet clinical safety requirements?

RFI draft: Please confirm if the door type for Resuscitation (Trauma) room 1.01.24 should be revised in the Doors Schedule. Should the standard solid wood door (D07.04) be updated to a specialized lead-lined or hermetic door type to meet clinical safety requ...

Summary: The Architectural layout indicates that the ENT Clinic (Room 14.01.08) is located at the intersection of structural grid lines 26 and N, and its corresponding elevation illustrates mechanical HVAC ductwork within the ceiling plenum. However, the Mechanical Supply and Return Ductwork Floor Plan shows this exact grid intersection (26 and N) as completely empty, containing only structural columns ...

Why it matters: If the ENT Clinic is intended to be located at grid 26/N in this zone, the mechanical design is incomplete and fails to provide the necessary HVAC supply and return services shown in the architectural elevations. Conversely, if the room is correctly modeled elsewhere or on a different level, the ...

Suggested next step: Please clarify the correct location of the ENT Clinic (Room 14.01.08). If it is properly located at Grid 26/N, update the Mechanical floor plan to include the room and its associated HVAC ductwork as represented in the architectural elevations. If it is located elsewhere, plea...

RFI draft: Please clarify the correct location of the ENT Clinic (Room 14.01.08). If it is properly located at Grid 26/N, update the Mechanical floor plan to include the room and its associated HVAC ductwork as represented in the architectural elevations. If...

Summary: The architectural Door Types schedule lists the 'PASSAGE WIDTH' for doors as exactly equivalent to their nominal total frame widths converted into feet and inches (e.g., Detail D07.04 for an 1800mm double door lists a passage width of 5'-11", which is ~1803mm; Detail D01.03 for a 900mm door lists 2'-11 1/2", which is ~901mm). True clear passage width must be less than the nominal frame width to...

Why it matters: Because the schedule overstates the passage width, it prevents accurate verification of clearances for the Endoscopy room, which requires adequate real passage width for moving bulky medical equipment such as the Transport Stretcher. Relying on these scheduled widths could lead to the procurement...

Suggested next step: Please update the Door Types schedule to reflect true, calculable clear passage widths that subtract frame and leaf profiles from the nominal width. Confirm that the corrected clear widths for the doors entering Room 6.01.01 will still meet the minimum clearance requirements f...

RFI draft: Please update the Door Types schedule to reflect true, calculable clear passage widths that subtract frame and leaf profiles from the nominal width. Confirm that the corrected clear widths for the doors entering Room 6.01.01 will still meet the mi...

Summary: The architectural typical bedhead detail specifies installation on a "2x4 PARTITION" where "MEDICAL SERVICES RUN INSIDE DRYWALL". However, the mechanical plan routes large vertical ductwork (16"x8" and 16"x10") and pipe shafts (PS-24) within the demising partition wall space separating adjacent typical single bed rooms (e.g., between 'Male single room 30.01.01' and 'Male single room 30.01.03').

Why it matters: A standard 2x4 timber partition (actual depth 3.5 inches) cannot physically accommodate 8-inch or 10-inch deep mechanical ducts, nor a designated pipe shaft. Attempting to route these mechanical elements through the same demising partition intended for the recessed 8'-5" wide bedhead and its inte...

Suggested next step: Please review the partition wall layout between the typical single bed rooms. The mechanical plan routes 16"x8"/16"x10" ducts and pipe shafts (PS-24) within these demising walls, which directly conflicts with the architectural typical bedhead detail requiring a standard 2x4 pa...

RFI draft: Please review the partition wall layout between the typical single bed rooms. The mechanical plan routes 16"x8"/16"x10" ducts and pipe shafts (PS-24) within these demising walls, which directly conflicts with the architectural typical bedhead deta...

Summary: The Door Schedule identifies doors for the Fluoroscopy room (4.01.02) as leaded doors D38.01 and D40.01, with product descriptions calling for a "2mm lead sheet". However, the standard architectural details for these same door types (D38 and D40) indicate a thinner "LEAD SHEET e=1.5mm".

Why it matters: Lead shielding thickness is strictly calculated based on radiation equipment output to ensure safe exposure levels outside the room. A discrepancy of 0.5mm in lead thickness compromises radiation protection compliance. Using 1.5mm if 2mm is required poses a severe health risk to staff and the pub...

Suggested next step: Please confirm the required lead sheet thickness for the doors in the Fluoroscopy room (4.01.02). Does the design require 2mm lead shielding as noted in the product descriptions, or 1.5mm as shown in the door details? Please update the drawings to ensure radiation safety compl...

RFI draft: Please confirm the required lead sheet thickness for the doors in the Fluoroscopy room (4.01.02). Does the design require 2mm lead shielding as noted in the product descriptions, or 1.5mm as shown in the door details? Please update the drawings to...

Summary: The CT Scanner Room (4.01.04) requires radiation shielding and is assigned leaded doors D38.01 and D40.01 in the door schedule. The door product descriptions for both D38.01 and D40.01 specify a '2mm lead sheet'. However, the construction details for these door types (D38 and D40) specify a lead sheet thickness of 'e=1.5mm'.

Why it matters: This 0.5mm discrepancy in lead shielding is a critical radiation safety issue. If the doors are manufactured with 1.5mm lead based on the detail drawings rather than the 2mm specified in the product descriptions, they may fail to provide adequate radiation protection for the CT scanner environmen...

Suggested next step: Please clarify the required lead shielding thickness for the doors in the CT Scanner Room (4.01.04). Should the doors be manufactured with a 2mm lead sheet as per the product descriptions, or a 1.5mm lead sheet as shown in the construction details?

RFI draft: Please clarify the required lead shielding thickness for the doors in the CT Scanner Room (4.01.04). Should the doors be manufactured with a 2mm lead sheet as per the product descriptions, or a 1.5mm lead sheet as shown in the construction details?

Summary: The door type specifications for the radiological doors D38.01 and D40.01 explicitly require a "2mm lead sheet" for radiation shielding. However, the corresponding construction details for these door types (Detail D38 and Detail D40) specify a thinner 1.5mm lead sheet ("LEAD SHEET e=1.5mm").

Why it matters: A 0.5mm discrepancy in lead shielding thickness is a critical life-safety and compliance issue for radiological rooms. If the thinner 1.5mm lead is installed based on the detail drawings, the rooms may fail safety certifications and expose occupants to radiation.

Suggested next step: Please clarify the required lead shielding thickness for radiological doors D38 and D40. Should the doors be manufactured with a 2mm lead sheet as noted in the door type descriptions, or a 1.5mm lead sheet as shown in the construction details?

RFI draft: Please clarify the required lead shielding thickness for radiological doors D38 and D40. Should the doors be manufactured with a 2mm lead sheet as noted in the door type descriptions, or a 1.5mm lead sheet as shown in the construction details?

Summary: The window type specification for the radiological window W06.01 specifies a "Leaded Glass 1/4"" (approx. 6mm) thickness. This matches the horizontal plan section of Detail W06, which calls for "LEADED SAFETY GLASS 3+3mm". However, the vertical section view in the exact same detail (Detail W06) contradicts this by specifying "SAFETY GLASS 6+6mm" (12mm thick), and crucially omits the "LEADED" re...

Why it matters: The inconsistency in both the thickness (6mm vs 12mm) and the material specification (Leaded vs standard Safety Glass) creates a major procurement and life-safety risk. Installing standard safety glass instead of leaded glass will result in a failure of radiological shielding.

Suggested next step: Please clarify the glazing requirements for window type W06. Does the window require 1/4" (3+3mm) Leaded Safety Glass as noted in the product specification and plan detail, or 6+6mm standard Safety Glass as indicated in the vertical section of Detail W06?

RFI draft: Please clarify the glazing requirements for window type W06. Does the window require 1/4" (3+3mm) Leaded Safety Glass as noted in the product specification and plan detail, or 6+6mm standard Safety Glass as indicated in the vertical section of Det...

Summary: The room layout for the Computerized Axial Tomography suite (4.01.04) shows a 'large double door' for main entry to accommodate the 'CT SCANNER 64 SLICES' (ID011) equipment. However, the Door Types schedule only provides one type of lead-lined double door suitable for a radiation room (DF42.01), which is an 'Uneven Swing' door with a narrow 'PASSAGE WIDTH 4' - 8"'. Standard symmetric double doo...

Why it matters: A 4'-8" passage width is typically insufficient for the installation and servicing of a 64-slice CT scanner gantry. If the contractor installs the scheduled wider 1800mm doors to ensure equipment clearance, the room will lack the 2mm lead sheet lining required to safely contain radiation. Further...

Suggested next step: Please clarify the door specification for the main entry of the CT Scan room (4.01.04). Should a new door type be added to the schedule that provides both a symmetric 1800mm overall width (or sufficient passage width for the CT scanner equipment) AND a 2mm lead sheet lining fo...

RFI draft: Please clarify the door specification for the main entry of the CT Scan room (4.01.04). Should a new door type be added to the schedule that provides both a symmetric 1800mm overall width (or sufficient passage width for the CT scanner equipment) ...

Summary: The room layout for the Mammography room (Room 4.01.08) relies on the architectural door schedules for radiation shielding specifications. The door schedule assigns Door Type D38.01 to this room. However, there is a direct contradiction regarding the required lead sheet thickness for the specified leaded doors (Types D38 and D40). The door type product specifications explicitly require a '2mm l...

Why it matters: A 0.5mm discrepancy in lead shielding thickness is highly critical in medical imaging environments like Mammography. Insufficient lead lining (1.5mm instead of the required 2.0mm) risks radiation leakage and failure to meet the physicist's radiation shielding requirements, posing a severe health ...

Suggested next step: Please clarify the required lead sheet thickness for leaded door types D38 and D40 (used in Room 4.01.08 and other radiological rooms). Should the doors be constructed with a 1.5mm or 2.0mm lead sheet? Please update the architectural details or the door type descriptions to ma...

RFI draft: Please clarify the required lead sheet thickness for leaded door types D38 and D40 (used in Room 4.01.08 and other radiological rooms). Should the doors be constructed with a 1.5mm or 2.0mm lead sheet? Please update the architectural details or th...