Architects
Project Specification Section Writer
Draft a project specification section for a specific building component or scope of work using CSI MasterFormat structure. This prompt helps architects write technically precise specification language that covers product requirements, execution standards, quality control, and submittal requirements — following industry-standard format.
This prompt drafts a complete three-part CSI MasterFormat specification section (Part 1 General, Part 2 Products, Part 3 Execution) for a named building component or scope of work, including references to applicable ASTM, AAMA, or other industry standards, submittal requirements, installer qualification standards, and installation tolerances. Proprietary product selections use bracketed [SELECTION REQUIRED] placeholders where project-specific choices have not been made, and edition years on standard references must be verified against current published editions before incorporating into contract documents. It is for licensed architects developing project-specific specification sections for commercial, institutional, or residential construction projects.
Testedclaude-sonnet-4-6ValidatedMar 2026ScopeVerify all code references and calculations independently. T…TierAdvanced
Constraints
Verify all code references and calculations independently. This does not replace licensed professional review.
Specifications must be reviewed by the project architect of record and, for technical content, by relevant engineering consultants before incorporation into contract documents.
Standard numbers and edition years in specifications must be verified against current published editions — standards are regularly revised.
Proprietary specifications (naming a single manufacturer) require owner approval and a legitimate basis for sole-source selection.
Tested Models
claude-sonnet-4-6
Uncertainty
Where project-specific product selections have not been made, use open performance specifications with [SELECTION REQUIRED] placeholders rather than inventing product specifications. List the performance criteria that must be met and note that product selection requires architect review.
Last updated
2026-05-28 — Published
The prompt
You are a licensed architect with expertise in writing construction specifications using CSI MasterFormat and the three-part specification format (General, Products, Execution). Draft a specification section for the following: Specification subject: - Work category: [WORK_CATEGORY — e.g., exterior wall insulation, fluid-applied waterproofing, metal panel cladding] - CSI MasterFormat section number (if known): [SECTION_NUMBER] - Project type: [PROJECT_TYPE] - Jurisdiction: [JURISDICTION] Project requirements: - Specified product or manufacturer (if selected): [PRODUCT / MANUFACTURER] - Performance requirements: [PERFORMANCE_REQUIREMENTS] - Special project conditions: [SPECIAL_CONDITIONS] - Sustainability requirements: [SUSTAINABILITY_REQUIREMENTS — e.g., VOC limits, recycled content, HPD required] Draft a three-part specification section: ## PART 1 — GENERAL 1.1 Summary (scope and related sections) 1.2 References (applicable standards — ASTM, AWS, AAMA, etc.) 1.3 Submittals (shop drawings, product data, samples, test reports) 1.4 Quality Assurance (manufacturer qualifications, installer qualifications, mock-up requirements) 1.5 Delivery, Storage and Handling 1.6 Project Conditions 1.7 Warranty ## PART 2 — PRODUCTS 2.1 Manufacturers (acceptable manufacturers and equivalence statement) 2.2 Materials (technical product requirements, standards, and performance criteria) 2.3 Accessories 2.4 Fabrication / Mixes / Mixes (as applicable) 2.5 Source Quality Control ## PART 3 — EXECUTION 3.1 Examination (substrate and condition requirements before installation) 3.2 Preparation 3.3 Installation (step-by-step installation requirements referencing manufacturer instructions and industry standards) 3.4 Field Quality Control (inspection and testing requirements) 3.5 Cleaning 3.6 Protection Use [BRACKETS] for owner/project-specific decisions not yet finalized. Note where multiple options exist.
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How to use this prompt
1
1. Select the CSI MasterFormat section number for the work type before running the prompt — this anchors the specification in the correct format structure.
2
2. Review all standard references and edition years in the generated text — verify each against the current published edition.
3
3. Have the relevant engineering consultant (structural, MEP) review sections in their discipline scope before incorporating into contract documents.
Customization tips
Add 'This is a green building project — include LEED material credit documentation requirements in Part 1.3 Submittals and environmental product requirements in Part 2.2 Materials' for sustainable projects.
For historic rehabilitation projects, add 'Include provisions for matching existing materials and submittal of material samples for architect's approval before ordering.'
Append 'Include allowance language for [product type] in Part 2.1 if the final product selection will be made during construction.'
Sample output
PROJECT SPECIFICATIONS — Residential Addition
Master Suite, Sunroom, and Covered Patio
PROJECT: Richardson Residence Addition
LOCATION: [Address], Texas
GROSS ADDITION AREA: Approximately 2,200 square feet
DATE: March 23, 2026
SPECIFICATION STATUS: Draft for Review
DIVISION 03 — CONCRETE:
Footings and foundation walls: Provide normal-weight concrete conforming to the applicable strength requirements for this exposure condition. Texas climate and soil conditions in this region may include expansive clay — foundation design has been prepared by a licensed structural engineer; contractor shall construct foundations strictly per structural drawings. Do not modify foundation dimensions or reinforcement without written authorization from the engineer of record.
DIVISION 04 — MASONRY (if applicable):
Exterior masonry veneer, where indicated: Full-bed mortar coursing, mortar color as selected by owner. Coordinate ties, lintels, and flashing with structural drawings.
DIVISION 06 — ROUGH CARPENTRY:
Exterior wall framing: Minimum stud spacing as indicated on structural drawings. All exterior sheathing to be code-compliant structural sheathing per the applicable wind load requirements for this Texas location. Note: Texas building codes require specific wind-resistance detailing in zones with elevated design wind speed — confirm with contractor that all sheathing fastening patterns comply with the structural engineer's specifications.
DIVISION 07 — THERMAL AND MOISTURE PROTECTION:
Building envelope: The master suite addition and sunroom shall achieve superior thermal performance given the extreme Texas summer heat. Specify continuous rigid insulation outboard of the wall framing in addition to cavity insulation. Vapor management strategy: warm-humid climates require careful vapor barrier placement — coordinate with mechanical engineer.
Roofing: Coordinate roofing system selection with existing residence roofing material. Where new and existing roofing systems meet, provide proper step flashing and counter-flashing per manufacturer requirements. All roof penetrations (HVAC, plumbing vents) to be flashed per applicable requirements.
DIVISION 08 — OPENINGS:
Sunroom glazing: Specify thermally broken aluminum or wood-clad frames with low-emissivity glazing and a low solar heat gain coefficient appropriate for the Texas climate. Solar heat gain control is critical in this application — do not substitute a higher SHGC glazing unit without architectural review.
DIVISION 09 — FINISHES:
Interior finishes as selected by owner and specified in the finish schedule. Coordinate paint colors, flooring transitions, and millwork profiles with the existing residence to achieve a consistent interior character.
GENERAL NOTE: These specifications are a framework for review. The contractor shall review all specifications against applicable state and local codes before commencing work. Any conflicts between specifications and drawings shall be immediately reported to the architect.
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Frequently asked questions
Both approaches have merit depending on the project context. Prescriptive specifications (naming specific products and installation methods) give the design team maximum control over the result but limit contractor flexibility and may exclude better alternatives. Performance specifications define required outcomes and standards, giving contractors flexibility to meet them with their preferred means and methods. Most project specifications use a combination — prescriptive for aesthetic and highly coordinated elements, performance for commodity items.
Specifications and drawings are complementary documents — specifications cover quality, materials, and execution requirements; drawings cover dimensions, quantities, and spatial relationships. Use specification notes on drawings only for clarifications directly tied to the drawing content. Avoid duplicating information between documents — discrepancies between specs and drawings create ambiguity and contractor RFIs. Develop both documents in parallel rather than writing specifications as an afterthought.
Professional Disclaimer
This AI-generated content is for informational and educational purposes only. It does not replace the professional judgment of a licensed architect. Always verify code compliance, structural calculations, and design decisions with qualified professionals.