Mix Chapter
Mix Chapter offers an online concrete plan takeoff service for concrete contractors, estimators and other construction professionals. Users submit plans as a vector PDF, DWG or DXF and receive a private link to the takeoff and a quantities CSV. The service estimates concrete quantities by element, reinforcing steel quantities, and concrete masonry unit block and grout counts. Results are shown on the project drawings with calculation details so users can review how quantities were derived. The workflow checks drawing scale against dimensions on the plans and supports estimating and preliminary material planning. Takeoffs are estimates, not bids, and should be reviewed against project documents before materials are ordered. Access is free, with one takeoff per email address every 24 hours and up to three per company email domain each day; no account is required.
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Concrete Mix AI
Concrete Mix AI is a browser-based toolkit for concrete professionals, civil engineers, contractors, estimators, inspectors, and students. Its free plan takeoff service accepts vector PDF or DWG plan sets and returns estimated concrete, rebar, and CMU quantities traced to the drawings, with calculation explanations and questions for engineer review. It reads schedules, legends, notes, and dimensions, checks scale against drawing dimensions, and flags conflicts between schedules, drawings, and specifications. Users receive a private takeoff link and quantities CSV by email. The takeoff provides quantities, not job prices or bids; estimates should be verified before ordering. The site also offers concrete calculators, including a material-cost estimator, ACI certification practice exams in English and Spanish, and building-code tools. Takeoffs, calculators, exams, and code tools are free, and takeoffs require no account.
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Altira
Altira is an AI-automated Construction Intelligence and Quantity Takeoff platform built for CSI Divisions 01–48. Upload PDF construction drawings, select your CSI division, and Altira automatically detects, maps, and organizes quantities across architectural, structural, MEP, civil, and specialty trades. Built for estimators, quantity surveyors, subcontractors, and preconstruction teams, Altira helps reduce manual takeoff effort, validate quantities faster, and generate export-ready quantity reports with greater accuracy and consistency.
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EstimatorAI
EstimatorAI is cloud-based construction estimating software that analyzes PDF bid packages, including plans, specifications, scopes, and addenda. Estimators, general contractors, subcontractors, and trade contractors can organize documents by project and ask plain-language questions about quantities, materials, assemblies, exclusions, and scope conditions. Uploads can be up to 1 GB. The software produces a first-pass material takeoff and links answers to source documents for review. Users can check and adjust extracted quantities, then export material and quantity information to Excel or PDF for their estimating workflow. Unlimited projects keep bids organized, and persistent project context lets teams revisit bid details and ask follow-up questions without starting over. Trade-specific workflows cover concrete, masonry, metals, wood, plumbing, HVAC, and electrical. EstimatorAI supports document review while construction professionals verify scope, pricing, and final estimates.
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