What belongs in a concrete submittal package
Concrete submittals split into design documents and product data:
- Mix designs per ACI 301: one for each specified class (footings, slabs, walls, site), showing design strength, cement type, SCMs (fly ash, slag), aggregate gradation, air content, slump, w/cm ratio, and admixture dosages
- Strength backup: trial batch data or standard-deviation history from the producing plant
- Reinforcing steel shop drawings: bar sizes, bends, spacing, laps, and support details per the structural drawings and ACI 315, with bar lists for fabrication
- Product data: admixtures, curing compound (and its compatibility with specified flooring), evaporation retarder, bonding agents
- Vapor retarder class and thickness under slabs on grade
- Joint materials: fillers, sealants, dowels or load-transfer devices
- Where specified: formwork design, embed and anchor bolt layouts, and flatness/levelness (FF/FL) plan
Mix designs: what the engineer checks
The structural engineer verifies each mix against the specified class: strength at the specified age, maximum w/cm, air entrainment for exposure class, and chloride limits. Two details cause outsized trouble. First, the curing compound must be compatible with whatever goes on the slab later — a dissipating compound where flooring adhesive is planned, or moisture-mitigation coordination with the flooring sub. Second, hot- and cold-weather concreting plans are frequently listed as required submittals and just as frequently forgotten until the first cold snap.
The review round-trip
Mix designs and rebar shop drawings go through the GC to the structural engineer. Rebar drawings on structures of any complexity usually take a full cycle plus a resubmittal — congested connections and lap-splice questions generate comments. Sequence matters: the rebar fabricator needs approved drawings before cutting steel, and your first pour date backs up from that approval. Get mixes and footing rebar in the first week of the project.
Common rejection reasons on concrete submittals
Typical bounce-backs:
- Mix w/cm ratio above the specified maximum for the exposure class, or missing air content where freeze-thaw exposure applies
- No strength backup data for the proposed mix
- Rebar drawings with laps, hooks, or cover that deviate from the structural typical details
- Curing compound incompatible with specified floor finishes
- Fly ash or slag percentages beyond spec limits for schedule-critical pours
- Vapor retarder below the specified class, or omitted entirely
How Submittal.App builds the concrete package
Your batch plant supplies the mix designs and your fabricator the bar drawings — Submittal.App handles everything around them. The AI Builder assembles admixture, curing, joint, and vapor retarder cut sheets by spec section, merges in the PDFs you drop from the plant and detailer, and produces one coherent package with cover sheet and TOC. Approvals come back on a shared link and feed procurement directly.