Plan Review: 87 Issues Found

Summary: 56 index entries | 11 perfect matches | 17 mismatched | 28 missing Mismatched (17): S-0.0: Expected: GENERAL NOTES (S-0.0) | Actual: STRUCTURAL GENERAL NOTES (S-0.0)(p35) S-0.1: Expected: GENERAL NOTES & SPECIAL INSPECTION NOTES (S-0.1) | Actual: STRUCTURAL GENERAL & SP. INSPECTION NOTES (S-0.1)(p36) S-1.1: Expected: FOUNDATION NOTES & SCHEDULES (S-1.1) | Actual: STR...

Why it matters: Addressing this before construction prevents rework and supports code compliance.

Suggested next step: Review drawings and specifications to resolve before construction.

RFI draft: Please clarify: Drawing Index Audit: 28 missing, 17 mismatched out of 56 sheets

Summary: Detail 2 directs the contractor to 'REMOVE EXPANSION ANCHOR BOLT HEAD AND PLUG WELD' for a Hilti KB-TZ2 anchor. A KB-TZ2 is a post-installed mechanical expansion (torque-controlled) anchor. Removing the nut ('head') eliminates the active clamping force required to engage the expansion wedges, disabling the anchor's setting mechanism. Furthermore, plug welding to the high-strength carbon steel a...

Why it matters: Welding to a mechanical expansion anchor voids its ICC-ES evaluation report (ESR-4561) and severely compromises its tensile and shear strength. This creates a high risk of brittle failure for the trash gate attachment, which could lead to detachment of the gate and pose a severe life-safety hazard.

Suggested next step: Please revise Detail 2 to provide an attachment method that does not require modifying, removing the nut, or welding to a post-installed mechanical expansion anchor. Suggest using a cast-in embed plate with headed studs or relocating the expansion anchors so the nuts do not in...

RFI draft: Please revise Detail 2 to provide an attachment method that does not require modifying, removing the nut, or welding to a post-installed mechanical expansion anchor. Suggest using a cast-in embed plate with headed studs or relocating the expansion...

Summary: Detail 5 Section A-A directs the contractor to "CUT FLANGE AS REQUIRED" on a structural member, and Detail 4 directs to "NOTCH BACKING CHANNEL OVER STUDS." Giving blanket authorization for unquantified field cutting of flanges makes it impossible to satisfy Section F2.2, which requires that the influence of holes be considered in elastic buckling stress (Fcre). Without knowing the exact size an...

Why it matters: The compression flange edge stiffener is critical for cold-formed member capacity. Under Section F3.1.2, elements adjacent to holes must be treated as unstiffened elements. Arbitrary field cutting removes the edge stiffener, invalidates the distortional buckling capacity (Section F4), and creates...

Suggested next step: Please remove the notes "CUT FLANGE AS REQUIRED" and "NOTCH BACKING CHANNEL". Provide fully engineered connection details that either preserve the flanges and edge stiffeners, or explicitly specify the exact maximum allowable cut/notch dimensions so the reduced net section can...

RFI draft: Please remove the notes "CUT FLANGE AS REQUIRED" and "NOTCH BACKING CHANNEL". Provide fully engineered connection details that either preserve the flanges and edge stiffeners, or explicitly specify the exact maximum allowable cut/notch dimensions ...

Summary: Details A, B, C, and D for full-height metal stud walls all specify a "MIN. 3" DEEP x 16 GA. CONT. SLIP TRACK" with a "¾" GAP" intended to accommodate roof deflection. Concurrently, the details require "#10 SCREWS EACH SIDE AT EACH MTL. STUD FLANGE" to connect the track directly to the metal studs. Installing screws through the slip track into the studs rigidly locks the connection, completely ...

Why it matters: By rigidly attaching the slip track, any downward deflection of the overhead roof structure will transfer unintended gravity loads directly into the non-load-bearing partition walls. This violates ASCE 7 Section 14.1.4.1 (which requires design per AISI S100 for actual carried loads), likely leadi...

Suggested next step: Clarify the slip track attachment. If a slotted slip track is intended, update the detail to explicitly specify a slotted track and note that screws must be placed in the center of the slots without being overdriven. If a deep-leg unslotted track is intended, remove the requir...

RFI draft: Clarify the slip track attachment. If a slotted slip track is intended, update the detail to explicitly specify a slotted track and note that screws must be placed in the center of the slots without being overdriven. If a deep-leg unslotted track ...

Summary: Detail 12 (COMPRESSION STRUT) specifies anchoring a steel compression strut to wood roof framing using "(2) # 10 - 1/2\" WOOD SCREWS". A 1/2-inch total screw length, after passing through the steel strut and any necessary bracket, leaves negligible thread penetration into the main wood member. Per NDS 12.2.2.2, the withdrawal capacity is calculated by multiplying the unit design value by "the l...

Why it matters: The compression strut is a critical component of the seismic bracing assembly intended to resist vertical forces. A 1/2-inch fastener will not adequately transfer these loads into the roof framing, leading to an immediate structural failure of the ceiling bracing system under seismic loading. Thi...

Suggested next step: Confirm the intended length for the #10 wood screws anchoring the compression strut to the roof framing. Consider revising Detail 12 to specify a minimum screw length (e.g., 1-1/2" or 2") to ensure adequate thread penetration into the wood member in accordance with NDS require...

RFI draft: Confirm the intended length for the #10 wood screws anchoring the compression strut to the roof framing. Consider revising Detail 12 to specify a minimum screw length (e.g., 1-1/2" or 2") to ensure adequate thread penetration into the wood member ...

Summary: The Plumbing Fixture Schedule and Specifications on sheet P1.0 designate WC-1 as the "ADA USE HEIGHT" (ADA compliant) water closet and WC-2 as the "STANDARD HEIGHT" water closet. In direct contradiction, the Enlarged Plumbing Plans on sheet P3.0 label the larger, accessible handicap stalls with "WC-2" and the standard, narrower stalls with "WC-1".

Why it matters: If installed as shown on the plan layouts, standard-height toilets will be placed in the accessible (ADA) stalls and ADA-height toilets will be placed in the standard stalls. This will result in immediate ADA compliance failures, failed inspections, and costly rework.

Suggested next step: Please clarify the water closet assignments. Should WC-1 be the standard height and WC-2 be the ADA height, or should the tags on the sheet P3.0 plans be swapped so WC-1 is placed in the accessible stalls?

RFI draft: Please clarify the water closet assignments. Should WC-1 be the standard height and WC-2 be the ADA height, or should the tags on the sheet P3.0 plans be swapped so WC-1 is placed in the accessible stalls?

Summary: S-2.0 specifies a W36x160 beam and references connection detail 4/SD3.1. Detail 4/SD3.1 specifies '13/16" x 1 1/2" HORIZONTALLY SLOTTED HOLES' and directs to the schedule for bolt size. However, the associated bolt schedule on the same sheet requires '1"Ø' bolts for W36x beams. A 1" diameter bolt cannot physically fit into a 13/16" wide slotted hole (which is sized for a 3/4" bolt).

Why it matters: This geometric impossibility will cause an immediate field fit-up failure during steel erection. The fabricator needs clarification on whether to increase the slotted hole width to standard dimensions (e.g., 1-1/16" x 1-5/16") to accommodate the 1"Ø bolts required for the W36x beam, or if a small...

Suggested next step: For Detail 4/SD3.1, the shear plate specifies 13/16" slotted holes, but the schedule requires 1"Ø bolts for W36x beams. Please clarify if the slotted holes should be increased to accommodate 1" bolts, or if a different bolt size should be used for this connection.

RFI draft: For Detail 4/SD3.1, the shear plate specifies 13/16" slotted holes, but the schedule requires 1"Ø bolts for W36x beams. Please clarify if the slotted holes should be increased to accommodate 1" bolts, or if a different bolt size should be used for...

Summary: The Exterior Lighting Fixture Schedule on E-1.0 specifies catalog numbers with the 'MVOLT' designation for fixtures W2, S1, and S2. As shown in the Interior Fixture Schedule on the same sheet, 'MVOLT' corresponds to 120/277V operation. However, the Voltage column on the Exterior Schedule explicitly calls for '480'. Furthermore, the E-2.0 Site Lighting Plan circuits these fixtures to 2-pole circ...

Why it matters: Procuring fixtures with 'MVOLT' (120-277V) LED drivers and connecting them to 480V circuits will instantly destroy the drivers and pose a serious safety hazard. The catalog numbers must be revised to the manufacturer's 480V designation (typically 'HVOLT' or '480') to match the 480V scheduling and...

Suggested next step: Please clarify if exterior fixtures W2, S1, S2, and S3 should be ordered with 480V drivers to match the 480V schedule column and 2-pole circuiting shown on the site plan. If so, please update the catalog numbers (currently showing MVOLT) accordingly.

RFI draft: Please clarify if exterior fixtures W2, S1, S2, and S3 should be ordered with 480V drivers to match the 480V schedule column and 2-pole circuiting shown on the site plan. If so, please update the catalog numbers (currently showing MVOLT) accordingly.

Summary: There is a fundamental contradiction between the architectural and plumbing restroom layouts. Architectural plan A2.03 shows a four-room configuration ('OFFICE MEN'S R.R. 113', 'OFFICE WOMEN'S R.R. 114', 'WHSE MEN'S R.R. 115', 'WHSE WOMEN'S R.R. 116') and locates the water heater ('S') and mop sink ('T') in a separate 'JANITOR 112' closet. Conversely, Plumbing plan P3.0 (Enlarged Plumbing Plans...

Why it matters: If this discrepancy is not resolved, the plumbing contractor will rough-in waste, vent, and supply lines for a layout that does not align with the architectural framed walls. This will cause severe installation conflicts, significant rework, and potential code compliance issues regarding the requ...

Suggested next step: Please clarify the correct restroom layout and fixture count. Should the plumbing plans on P3.0 be updated to match the 4-room architectural layout and separate janitor closet shown on A2.03, or has the architectural layout changed?

RFI draft: Please clarify the correct restroom layout and fixture count. Should the plumbing plans on P3.0 be updated to match the 4-room architectural layout and separate janitor closet shown on A2.03, or has the architectural layout changed?

Summary: Panel schedule L5F shows a total connected load of 3.8 kVA. However, panel schedule H5F lists the primary load for the feeder transformer 'XFMR T-L5F' (which feeds panel L5F) as only 1800 VA (1000 VA on Phase A, 800 VA on Phase B, and zero on Phase C). A transformer's primary feeder load must be sized to equal or exceed the connected secondary load. This discrepancy directly violates the projec...

Why it matters: Under-representing the transformer load on the primary panel (H5F) results in an incorrect total demand calculation for the panel and the upstream distribution system. This can lead to undersized primary feeders or main breakers, posing a severe safety hazard and fire risk, and will cause the pla...

Suggested next step: Please revise the load calculation for 'XFMR T-L5F' on Panel H5F to accurately reflect the 3.8 kVA connected load from Panel L5F, correctly distributed across all 3 phases of the transformer primary in accordance with NEC load calculation requirements.

RFI draft: Please revise the load calculation for 'XFMR T-L5F' on Panel H5F to accurately reflect the 3.8 kVA connected load from Panel L5F, correctly distributed across all 3 phases of the transformer primary in accordance with NEC load calculation requirem...

Summary: The project specification's Title 24 notes explicitly claim the project "DOES NOT INSTALL AN ENTIRELY NEW POWER DISTRIBUTION" to exempt the project from service electrical metering and circuit separation requirements. However, the specification's Scope of Work clearly lists "ELECTRICAL SERVICE" as included. Furthermore, the site power plan directly contradicts the exemption by detailing the ins...

Why it matters: By installing a new 2000A service and primary distribution system, the project does not qualify for the Title 24 Additions and Alterations exemption listed in the specification. This will result in plan check rejection and failed inspections, as service electrical metering and energy monitoring s...

Suggested next step: Please clarify if this project includes a new power distribution system and electrical service as shown on the drawings. If a new service and distribution system are being installed, please update the Title 24 notes to remove the exemptions and provide the required service ele...

RFI draft: Please clarify if this project includes a new power distribution system and electrical service as shown on the drawings. If a new service and distribution system are being installed, please update the Title 24 notes to remove the exemptions and pr...

Summary: The electrical site plan routes both emergency doorway lighting circuits (circuit '3(EM)') and normal site lighting circuits (circuits '5,7' and '9,11') within the same shared raceways along the building perimeter (conduits tagged '10D' and '10F'). The Feeder Size Chart confirms this mixture by detailing the total conductor count for these shared conduits (e.g., '10D' contains '5#10 CU.'), acco...

Why it matters: Failing to separate emergency and normal wiring is a critical life safety code violation. It will result in a failed electrical inspection and necessitate costly and time-consuming rework during construction to install dedicated raceways exclusively for the emergency egress lighting circuits.

Suggested next step: Please confirm if the emergency doorway lighting circuit 3(EM) must be routed in a dedicated, independent conduit separate from normal site lighting circuits 5,7 and 9,11 to comply with NEC 700.10(B) separation of circuits requirements. Request revised site plan conduit routin...

RFI draft: Please confirm if the emergency doorway lighting circuit 3(EM) must be routed in a dedicated, independent conduit separate from normal site lighting circuits 5,7 and 9,11 to comply with NEC 700.10(B) separation of circuits requirements. Request re...

Summary: The 'CEILING JOISTS PERPENDICULAR TO WALL' detail (Detail A) shows a ceiling joist supported on a continuous steel angle and connected solely by a 2-inch long, 1/8-inch fillet weld at the bottom flange. The detail does not specify any web clip angles, full-depth blocking, or top flange attachments. This violates AISI S100-16 Section B3.4, which mandates that beams and trusses must be restrained...

Why it matters: Cold-formed steel C-sections are highly susceptible to torsional rolling and web crippling if not properly restrained at their supports. Failing to provide adequate rotational restraint can lead to localized support failure, excessive deflection, and overall instability of the ceiling framing sys...

Suggested next step: Please clarify if web clip angles (similar to the provided 'ALTERNATE' detail), solid blocking, or other approved means of rotational restraint should be added to the 'CEILING JOISTS PERPENDICULAR TO WALL' detail to satisfy the support restraint requirements of AISI S100-16 Se...

RFI draft: Please clarify if web clip angles (similar to the provided 'ALTERNATE' detail), solid blocking, or other approved means of rotational restraint should be added to the 'CEILING JOISTS PERPENDICULAR TO WALL' detail to satisfy the support restraint r...

Summary: The opening schedule and header/sill details specify "#10 SCREWS" and track thicknesses up to 12 GA (0.097 in.) and jamb assemblies up to 3-16 GA (0.162 in.). These connections are subjected to combined shear and pull-over/pull-out forces from gravity and lateral wind loads. However, AISI S100-16 Section J4.5.1 explicitly limits the validity of the combined shear and pull-over equation to No. 1...

Why it matters: Because the specified fasteners and material thicknesses exceed the applicability limits of the standard AISI combined interaction equations, the connection capacities cannot be verified using standard code methods. Relying on these details may result in inadequate connection strength for out-of-...

Suggested next step: Please confirm if the #10 screws in 14 GA and 12 GA tracks for header/sill connections have been evaluated via independent laboratory testing for combined shear and tension, or revise the details to use No. 12 or No. 14 screws and confirm interaction capacities for thicknesses...

RFI draft: Please confirm if the #10 screws in 14 GA and 12 GA tracks for header/sill connections have been evaluated via independent laboratory testing for combined shear and tension, or revise the details to use No. 12 or No. 14 screws and confirm interact...

Summary: The drawings specify 1/8" (0.125") fillet welds for lap joints on thin gauge materials. Detail C specifies a 1/8" fillet weld to attach a 16 GA (approx. 0.054" thick) slip track to a steel joist, and Detail 11 specifies a 1/8" fillet weld to attach a 12 GA (approx. 0.105" thick) angle clip to a box header. AISI S100-16 Section J2.5 explicitly requires that the leg of a fillet weld in a lap join...

Why it matters: Specifying a weld leg larger than the material thickness in a lap joint will likely result in burn-through of the thinner sheet edge during fabrication. This makes it impossible to achieve the specified weld size and compromises the structural integrity of the connection.

Suggested next step: Please revise the specified fillet weld sizes to not exceed the thickness of the connected sheet materials (e.g., maximum 0.054" for 16 GA and 0.105" for 12 GA), or provide an alternative connection method such as arc spot welds or structural screws.

RFI draft: Please revise the specified fillet weld sizes to not exceed the thickness of the connected sheet materials (e.g., maximum 0.054" for 16 GA and 0.105" for 12 GA), or provide an alternative connection method such as arc spot welds or structural screws.