Plan Review: 25 Issues Found

Summary: The Ground Floor layout (CW-01) provides space and designations for a single "COLD WATER SUCTION TANK". In direct contradiction, the Cold Water Services Schematic Diagram (CW-18) at the ground level indicates two primary cold water tanks ("COLD WATER TANK 1" and "COLD WATER TANK 2") along with a "RAINWATER HARVESTING TANK".

Why it matters: A mismatch in the number and type of primary infrastructure tanks on the ground floor severely affects spatial planning, structural load allocations, and mechanical procurement. If the schematic correctly requires two cold water tanks and a rainwater harvesting system, the ground floor layout lac...

Suggested next step: Clarify the required tank configuration at the ground floor level. Should the layout accommodate two cold water tanks and a rainwater harvesting tank as shown in the schematic, or is the single suction tank shown on the floor plan correct? Please update the architectural and m...

RFI draft: Clarify the required tank configuration at the ground floor level. Should the layout accommodate two cold water tanks and a rainwater harvesting tank as shown in the schematic, or is the single suction tank shown on the floor plan correct? Please ...

Summary: The riser schedule for the main shaft (adjacent to Lift 1) conflicts between the Ground Floor and Level 23 plans. The Ground Floor plan states that "100Ø SS (316) SK DROPPER" and "100Ø SS (316) SMK DROPPER" lines drop down this shaft. However, the Level 23 plan shows two "80Ø SS (316) SMK PRESSURIZED DROPPER" lines in this exact shaft instead, with the 100Ø lines routed elsewhere.

Why it matters: Inconsistent riser contents between floors will lead to severe vertical coordination failures during installation. If the 100Ø droppers are routed down a different shaft at Level 23, they will physically misalign with the expected riser connections mapped out at the ground floor lift lobby. Furth...

Suggested next step: Verify the correct routing and pipe sizing for the main SK and SMK droppers. Please confirm whether the shaft near Lift 1 should contain 100Ø gravity droppers or 80Ø pressurized droppers, and issue updated riser schedules to ensure alignment of vertical pipe runs across all le...

RFI draft: Verify the correct routing and pipe sizing for the main SK and SMK droppers. Please confirm whether the shaft near Lift 1 should contain 100Ø gravity droppers or 80Ø pressurized droppers, and issue updated riser schedules to ensure alignment of ve...

Summary: Multiple toilet and restroom areas on both the Level 7 (TINGKAT 7) and Level 8 (TINGKAT 8) plans contain the annotation 'REFER DRWING NO. PXX'. 'PXX' is clearly an unresolved placeholder that was never updated with the actual drawing number. This occurs at the TANDAS (L) on Level 7, the TANDAS (P) on Level 7, the TANDAS (L) on Level 8, and the TANDAS/JAN area on Level 8. These are wet areas req...

Why it matters: During permitting, reviewers will flag the incomplete cross-references as missing documentation for wet-area plumbing design. During construction, contractors will be unable to determine fixture counts, pipe connection sizes, outlet locations, and drainage details for at least four restroom areas...

Suggested next step: Request the M&E Engineer to identify and provide the correct drawing numbers to replace all 'PXX' placeholder references for the toilet/restroom areas on Levels 7 and 8. Confirm whether separate detail drawings exist for TANDAS (L) and TANDAS (P) on each floor, and issue revis...

RFI draft: Request the M&E Engineer to identify and provide the correct drawing numbers to replace all 'PXX' placeholder references for the toilet/restroom areas on Levels 7 and 8. Confirm whether separate detail drawings exist for TANDAS (L) and TANDAS (P) ...

Summary: Multiple toilet and janitor areas on both Level 19 and Level 20 plans reference "REFER DRWING NO. PXX" for their detailed plumbing layouts. "PXX" is clearly a placeholder that was never replaced with an actual drawing number. This appears at TANDAS (L) on Level 19, TANDAS (P) and JAN on Level 19, TANDAS (L) on Level 20, and TANDAS (P) on Level 20. All wet-area fixture and piping details for the...

Why it matters: During permitting, reviewers will require completed plumbing details for all toilet blocks to verify fixture counts, drainage, venting, and water supply compliance. During construction, contractors cannot install any plumbing fixtures or rough-in piping for these areas without the referenced deta...

Suggested next step: Request the M&E Engineer to provide the actual drawing number(s) replacing the "PXX" placeholder for all toilet block (TANDAS L, TANDAS P, and JAN) plumbing detail plans on Level 19 and Level 20, and issue updated drawings with the correct cross-references.

RFI draft: Request the M&E Engineer to provide the actual drawing number(s) replacing the "PXX" placeholder for all toilet block (TANDAS L, TANDAS P, and JAN) plumbing detail plans on Level 19 and Level 20, and issue updated drawings with the correct cross-r...

Summary: Multiple toilet and wet area rooms on both the TINGKAT 21 and TINGKAT 22 floor plans contain the annotation "REFER DRWING NO. PXX". The designation "PXX" is clearly a placeholder drawing number that was never replaced with an actual drawing reference. On Level 21, this appears at the TANDAS (L) block near grids 2-3/B-C and at the TANDAS (P)/JAN block near grids F-H. On Level 22, the same placeh...

Why it matters: Without valid drawing numbers, contractors have no way to locate the detailed plumbing layouts for these toilet rooms, including fixture connections, pipe sizes, valve locations, and connection points. Permitting authorities will flag the incomplete cross-references as an unresolved coordination ...

Suggested next step: Request the M&E engineer provide the correct drawing numbers for all locations currently annotated with "REFER DRWING NO. PXX" on both the Level 21 and Level 22 cold water service plans. Confirm whether the referenced drawings have been issued or are still pending, and provide...

RFI draft: Request the M&E engineer provide the correct drawing numbers for all locations currently annotated with "REFER DRWING NO. PXX" on both the Level 21 and Level 22 cold water service plans. Confirm whether the referenced drawings have been issued or ...

Summary: Multiple toilet and washroom areas on both the Level 5 (TINGKAT 5) and Level 6 (TINGKAT 6) floor plans contain the annotation 'REFER DRWING NO. PXX'. The designation 'PXX' is clearly an unresolved placeholder drawing number that was never updated with the actual reference. On Level 5, this placeholder appears at TANDAS (L) near grid B and TANDAS (P) near grid G. On Level 6, it appears at TANDAS...

Why it matters: Without a valid drawing number, the plumbing contractor cannot locate the detailed toilet fixture layouts, internal pipe routing, connection points, or fixture specifications for at least four separate washroom areas across two floors. This will prevent accurate material takeoff, delay rough-in p...

Suggested next step: Request the M&E Engineer to provide the correct drawing number(s) to replace all 'PXX' placeholder references for toilet/washroom plumbing details on Levels 5 and 6. Confirm that the referenced drawing(s) have been issued and include complete internal plumbing layouts for TAND...

RFI draft: Request the M&E Engineer to provide the correct drawing number(s) to replace all 'PXX' placeholder references for toilet/washroom plumbing details on Levels 5 and 6. Confirm that the referenced drawing(s) have been issued and include complete inte...

Summary: The central ramp adjacent to the LOPONG (void) is annotated as 'RAMP 1:12' on the Tingkat 15 plan but as 'RAMP 1:10' on the Tingkat 16 plan. These ramps occupy the same structural bay and serve as the inter-floor circulation ramp, yet they carry conflicting slope annotations on the same drawing sheet. A continuous ramp between two floors must have a single, consistent gradient. Additionally, a ...

Why it matters: During permitting, the authority will flag the 1:10 slope as non-compliant with accessibility requirements for persons with disabilities. During construction, the contractor will not know which slope to build, potentially requiring demolition and rework if the wrong gradient is cast. If the 1:10 ...

Suggested next step: Please confirm the correct ramp gradient for the central ramp between Level 15 and Level 16. The Level 15 plan indicates 1:12 while the Level 16 plan indicates 1:10. Clarify whether the ramp complies with MS 1184 / UBBL accessibility requirements (maximum 1:12 gradient) and is...

RFI draft: Please confirm the correct ramp gradient for the central ramp between Level 15 and Level 16. The Level 15 plan indicates 1:12 while the Level 16 plan indicates 1:10. Clarify whether the ramp complies with MS 1184 / UBBL accessibility requirements ...

Summary: On Sheet 9377-1S/CW-03 (Level 2 floor plan), the toilet areas (TANDAS P 4.93mp, TANDAS L 4.93mp, TANDAS OKU 6.88mp) are served by the CW DROPPER PIPE (SK) system (green pipe), consistent with Level 2 being the SEKOLAH KEBANGSAAN (SK) floor with KANTIN (SK). The main distribution pipe is annotated as '40Ø PPR PN 16 PIPE (SK) RUNS AT H/L'. However, on Sheet 9377-1S/CW-16, the blowout detail title...

Why it matters: This inconsistency could lead contractors to connect Level 2 toilet fixtures to the SMK cold water system instead of the SK system. This would result in incorrect pipe connections at the riser, potentially overloading the SMK distribution while underserving the SK distribution. It may also affect...

Suggested next step: Please clarify the cold water supply source for the Level 2 toilet. Sheet CW-03 shows the Level 2 toilet areas served by the CW DROPPER PIPE (SK) with '40Ø PPR PN 16 PIPE (SK)', while Sheet CW-16 groups 'Level 1 & 2 Toilet' together under supply from 'CANTEEN (SMK)'. If Level ...

RFI draft: Please clarify the cold water supply source for the Level 2 toilet. Sheet CW-03 shows the Level 2 toilet areas served by the CW DROPPER PIPE (SK) with '40Ø PPR PN 16 PIPE (SK)', while Sheet CW-16 groups 'Level 1 & 2 Toilet' together under supply f...

Summary: The ground floor cold water services plan (CW-01) annotates the finished floor level near the Cold Water Suction Tank as FFL 2.00 (with SFL 1.95). However, the schematic diagram (CW-18) labels the ground floor (TINGKAT BAWAH) at FFL. 1.95. This is a 50mm discrepancy for the same floor level. It appears the schematic may have inadvertently used the structural floor level (SFL 1.95) as the finish...

Why it matters: A 50mm error in the reference FFL affects all pipe invert levels, pump centreline heights, tank plinth levels, and equipment mounting elevations at the ground floor. Contractors setting out equipment based on the schematic would install items 50mm lower than intended, potentially causing issues w...

Suggested next step: Please confirm the correct Finished Floor Level (FFL) for the Ground Floor (TINGKAT BAWAH). CW-01 shows FFL 2.00 and SFL 1.95, while CW-18 shows FFL. 1.95. Please clarify which value is correct and revise the conflicting drawing accordingly.

RFI draft: Please confirm the correct Finished Floor Level (FFL) for the Ground Floor (TINGKAT BAWAH). CW-01 shows FFL 2.00 and SFL 1.95, while CW-18 shows FFL. 1.95. Please clarify which value is correct and revise the conflicting drawing accordingly.

Summary: The schematic diagram for the Level 4 'Ruang Pengurusan Kehidupan: Pengurusan Diri' zone includes a pipe branch for an 'OKU TOILET'. However, the Level 4 floor plan does not show an OKU toilet in this architectural zone. Furthermore, the enlarged plumbing layout for this specific area only shows a single shower branch (SH) and lacks the PWC and basin fixtures that would belong to an OKU toilet.

Why it matters: If the schematic is strictly followed, the contractor may incorrectly route plumbing for an OKU toilet in an area where the architectural layout allocates space for other functions. This discrepancy between the schematic, enlarged layout, and the architectural floor plan will lead to improper pip...

Suggested next step: Please confirm if an OKU Toilet is intended for the Level 4 'Ruang Pengurusan Kehidupan: Pengurusan Diri' area. If not, please revise the SU-9 TD schematic to remove the OKU Toilet branch so it aligns with the architectural floor plan and plumbing layout.

RFI draft: Please confirm if an OKU Toilet is intended for the Level 4 'Ruang Pengurusan Kehidupan: Pengurusan Diri' area. If not, please revise the SU-9 TD schematic to remove the OKU Toilet branch so it aligns with the architectural floor plan and plumbing...

Summary: Multiple toilet and washroom areas on both the Level 9 (TINGKAT 9) and Level 10 (TINGKAT 10) plans reference "REFER DRWING NO. PXX" instead of a valid drawing number. "PXX" is clearly an unresolved placeholder. These references appear at the TANDAS (L) on Level 9, the TANDAS (P)/JAN rooms on Level 9, and the equivalent toilet blocks on Level 10. The cold water distribution piping (CW DROPPER PI...

Why it matters: During permitting, reviewers will flag incomplete cross-references as the toilet fixture layouts, water supply branch connections, and fixture counts cannot be verified. During construction, plumbing contractors will be unable to determine the correct drawing for toilet fixture installation detai...

Suggested next step: Request the M&E Engineer to provide the correct drawing numbers to replace all "PXX" placeholder references on sheet 9377-1S/CW-07 for the toilet/washroom areas on both Level 9 and Level 10, and confirm that the referenced drawings showing fixture layouts and cold water branch...

RFI draft: Request the M&E Engineer to provide the correct drawing numbers to replace all "PXX" placeholder references on sheet 9377-1S/CW-07 for the toilet/washroom areas on both Level 9 and Level 10, and confirm that the referenced drawings showing fixture...

Summary: At the same CW riser shaft, the pipe schedule at position #4 is inconsistent between Level 19 and Level 20. On Level 19, the schedule indicates "4. 100Ø SS (316) SMK DROPPER DROPS TO F/B", while on Level 20 the same position shows "4. 80Ø SS (316) SMK PRESSURIZED DROPPER FROM F/A". Pipes 1–3 are identical on both floors, but pipe #4 changes from an 80mm pressurized dropper on Level 20 to a 100m...

Why it matters: If position #4 in the riser shaft physically connects between Level 19 and Level 20, a size reduction from 100mm to 80mm (or vice versa) requires a reducer fitting that is not shown, and the change in pipe type (pressurized dropper vs. gravity dropper) implies fundamentally different system desig...

Suggested next step: Request the M&E Engineer to clarify whether CW riser position #4 is a continuous pipe between Level 19 and Level 20. If so, confirm the correct pipe size (80mm or 100mm) and type (pressurized dropper or gravity dropper), and whether a reducer or transition is required at the f...

RFI draft: Request the M&E Engineer to clarify whether CW riser position #4 is a continuous pipe between Level 19 and Level 20. If so, confirm the correct pipe size (80mm or 100mm) and type (pressurized dropper or gravity dropper), and whether a reducer or t...

Summary: Multiple locations across both the Level 13 and Level 14 cold water service plans contain placeholder drawing references that have not been updated with actual drawing numbers. The callouts 'REFER DRWING NO. PXX' appear at toilet blocks (TANDAS) on both levels. This 'PXX' designation is clearly an unfinished placeholder (using 'XX' as filler) that should have been replaced with a valid drawing ...

Why it matters: During permitting review, authorities will flag incomplete cross-references as a deficiency, potentially delaying approval. During construction, contractors will be unable to locate the referenced plumbing detail drawings for the toilet rooms and other areas, leading to RFIs, work stoppages, and ...

Suggested next step: Request the M&E engineer to provide the correct drawing numbers for all instances of 'PXX' references on sheet 9377-1S/CW-09, and confirm whether the referenced detail drawings have been issued. Specifically identify the correct drawing number for the toilet block (TANDAS) plu...

RFI draft: Request the M&E engineer to provide the correct drawing numbers for all instances of 'PXX' references on sheet 9377-1S/CW-09, and confirm whether the referenced detail drawings have been issued. Specifically identify the correct drawing number for...

Summary: Multiple toilet/washroom areas across both the Level 17 and Level 18 plans contain the annotation "REFER DRWING NO. PXX". The designation "PXX" is a clearly unresolved placeholder that was never updated with actual drawing numbers. This appears at a minimum at TANDAS (L) and TANDAS on Level 17, and at TANDAS (L) and TANDAS on Level 18. Without valid cross-referenced drawing numbers, the cold wa...

Why it matters: During permitting, reviewers will not be able to verify that cold water services to the toilet areas comply with plumbing codes and fixture count requirements, as the referenced detail drawings are not identifiable. During construction, plumbing contractors will be unable to locate the design int...

Suggested next step: Request the M&E Engineer to issue updated drawing sheet 9377-1S/CW-11 with all "PXX" placeholder references replaced with the correct drawing numbers for the toilet cold water service details on both Level 17 and Level 18. Confirm whether the referenced toilet detail drawings ...

RFI draft: Request the M&E Engineer to issue updated drawing sheet 9377-1S/CW-11 with all "PXX" placeholder references replaced with the correct drawing numbers for the toilet cold water service details on both Level 17 and Level 18. Confirm whether the refe...

Summary: Multiple locations on both the Level 11 (Tingkat 11 Sekolah Kebangsaan) and Level 12 (Tingkat 12 Sekolah Menengah Kebangsaan) cold water plans reference "REFER DRWING NO. PXX" for toilet and wet area plumbing details. "PXX" is clearly an unresolved placeholder, not a valid drawing number consistent with the project numbering convention (e.g., 9377-1S/CW-08). This placeholder appears at the TAND...

Why it matters: During permitting, authorities will require all cross-referenced drawings to be identifiable and submitted as part of the plan set. Unresolved placeholders indicate incomplete documentation and will likely result in a plan check rejection. During construction, plumbing contractors cannot install ...

Suggested next step: Request the M&E Engineer to confirm and issue the actual drawing numbers for all toilet and wet area plumbing details currently referenced as "PXX" on sheet 9377-1S/CW-08, covering TANDAS (L) and TANDAS (P) on Level 11, and TANDAS, TANDAS(P), and BILIK DOBI on Level 12.

RFI draft: Request the M&E Engineer to confirm and issue the actual drawing numbers for all toilet and wet area plumbing details currently referenced as "PXX" on sheet 9377-1S/CW-08, covering TANDAS (L) and TANDAS (P) on Level 11, and TANDAS, TANDAS(P), and ...