DD Set Plan Review: 45 Issues Found

Summary: The utility loads / connection data schedule identifies different models (and in some cases manufacturers) than the supporting equipment spec for the same item numbers.

Why it matters: If the schedule is based on wrong equipment models, electrical loads, gas sizing, and water/drain connections may be designed incorrectly, leading to rework and commissioning failures.

Suggested next step: Confirm basis-of-design equipment models and revise utility loads schedule to match specified equipment.

RFI draft: Please confirm the correct equipment models for the utility loads schedule and revise to match the equipment specification.

Summary: Equipment tags on plans do not align with schedule numbering; some items in the schedule have no plan reference.

Why it matters: Procurement and installation rely on consistent tagging; gaps cause coordination errors.

Suggested next step: Align plan tags with equipment schedule and fill sequence gaps.

RFI draft: Please align equipment tags on plans with the equipment schedule.

Summary: Utility connection data shows electrical loads that do not match equipment cut sheets or spec; panel schedules may be undersized.

Why it matters: Undersized circuits can cause equipment failures and permit comments.

Suggested next step: Reconcile electrical loads between equipment spec, utility schedule, and panel schedules.

RFI draft: Please confirm electrical loads for equipment match the utility schedule and panel design.

Summary: Gas connection and exhaust requirements in the utility schedule differ from equipment spec for several items.

Why it matters: Mismatch can require duct and gas piping rework during construction.

Suggested next step: Revise utility schedule to match equipment spec or provide updated cut sheets.

RFI draft: Please confirm gas and exhaust connection data matches the specified equipment.

Summary: Utility loads schedule shows water/drain data for some equipment; plumbing riser diagram does not show all connections.

Why it matters: Missing connections can cause delays and change orders.

Suggested next step: Coordinate utility schedule with plumbing drawings and add missing connections.

RFI draft: Please add plumbing connections for all equipment shown on the utility schedule.

Summary: Equipment room ventilation and make-up air requirements are not fully coordinated with equipment schedules.

Why it matters: Insufficient ventilation can affect equipment operation and code compliance.

Suggested next step: Verify ventilation rates and make-up air against equipment schedules.

RFI draft: Please confirm ventilation and make-up air for equipment rooms per IMC.

Summary: Panel schedules show limited spare capacity; future equipment or circuits may require panel upgrades.

Why it matters: Lack of spare capacity can force costly panel changes later.

Suggested next step: Review panel loading and add spare capacity or note future provisions.

RFI draft: Please confirm panel spare capacity for future equipment loads.

Summary: Floor drain and waste routing for equipment areas are not fully detailed on plumbing plans.

Why it matters: Missing routing can cause field delays and rework.

Suggested next step: Add floor drain and waste routing for all equipment requiring drainage.

RFI draft: Please add floor drain and waste routing for equipment areas.

Summary: Control narrative and sequence of operation are not fully aligned with equipment schedule and drawings.

Why it matters: Commissioning and acceptance depend on clear control intent.

Suggested next step: Coordinate control narrative with equipment schedule and mechanical drawings.

RFI draft: Please confirm control sequence matches equipment schedule.

Summary: Clear floor space and accessible route to equipment for maintenance need verification per ADA.

Why it matters: Accessibility compliance is required for permit and occupancy.

Suggested next step: Verify clear floor space and accessible route at equipment locations.

RFI draft: Please confirm accessible route and clear floor space at equipment per IBC Chapter 11.

Summary: GFCI and local disconnect requirements for equipment should be verified per NEC.

Why it matters: Code compliance and safety.

Suggested next step: Verify GFCI and disconnect requirements on electrical design.

RFI draft: Please confirm GFCI and disconnect requirements per NEC.

Summary: Equipment room door size and access path should allow for equipment replacement.

Why it matters: Future maintenance and replacement require adequate access.

Suggested next step: Verify door size and access path for largest equipment.

RFI draft: Please confirm equipment room door size allows for equipment replacement.