Lead Times, Submittal Logs, and Long-Lead Material Planning

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This episode covers lead times, submittal logs, custom fabrication, field dimensions, delivery windows, California Building Code Section 107.3.4.1, and the Title 8 storage rules for 20 ft., 16 ft., and 6 ft. This matters because official preparation resources identify project coordination as testable material, and procurement coordination is where paperwork, fabrication, schedule, inspection readiness, and jobsite safety all meet.

The central point I want you to remember is simple. A long lead item is not moving just because the contract is signed. For an item that requires review before release, the useful manufacturing clock begins only after the required submittal is approved and the purchase order is released. Everything before that moment is still part of the schedule, but it is not factory production. I think of the process as a relay race. The baton is information. If the drawing, product data, field measurement, or approval sits in one person's inbox, the material is still standing at the starting line.

That is the heart of this episode because it explains why a project can feel busy while a critical item is making no real progress. Crews can be mobilized, concrete can be placed, walls can be framed, and meetings can be full, yet a custom component can remain untouched by the manufacturer. The immediate condition is an unresolved approval. The next effect is a delayed order release. The likely result is that fabrication and delivery shift later, which can consume schedule float and hold up successor work. The submittal log gives the contractor a way to see that chain early enough to act.

Lead time is broader than shipping time. Shipping is only the movement from the manufacturer or distributor to the site. Lead time can include the supplier's queue, fabrication, quality control, packaging, transportation, and delivery. The contractor also has to plan the time that comes before that lead time, including preparation of the submittal, design review, possible correction, resubmission, and final authorization to order.

I do not attach a universal number of weeks to a product. Supplier availability changes, project requirements differ, and custom work varies. I teach the coordination method instead. I start with the date the material is actually needed for installation. Then I work backward through delivery, receiving, fabrication, order release, approval, review, and initial submission. That backward calculation produces the real action date.

Suppose a contractor knows a custom air handling unit must be set before overhead finishes can close. The supplier has given a written fabrication and delivery duration, but the electrical characteristics in the first package do not match the contract documents. The design professional returns the package for correction. Nothing about that exchange is merely clerical. Each review cycle moves the order release unless the contractor identifies the conflict quickly, routes the response, and resubmits without delay. The downstream ceiling and finish work may still proceed in other areas, but the affected sequence can tighten or stop.

I want you to separate 2 dates in your mind. The required on site date answers, when must the material be available. The release date answers, when must the approved information and purchasing authority reach the manufacturer. A competent procurement plan connects those 2 dates with every duration in between. A weak plan writes down only the delivery date and hopes the rest takes care of itself.

A submittal is the constructor's package of information showing the proposed product, material, equipment, or fabrication detail for review against the contract documents. It can include product data, samples, and shop drawings. The purpose is not to redesign the project. The purpose is to demonstrate that the intended selection and execution are consistent with the specified requirements before money and fabrication effort are committed.

A submittal log is the control document for that flow. I arrange it around the master schedule, not around alphabetical convenience. The most useful fields identify the item, the responsible subcontractor or supplier, the date the package is required, the date it was submitted, the review status, the date comments were returned, the date approval was obtained, the order release date, the expected fabrication period, and the planned delivery window. On a small job, that can be a disciplined spreadsheet. On a larger job, it may be part of a project management system. The tool can change. The logic cannot.

Looking at this process, I want you to notice that approval sits between preparation and release. The log is not just a filing cabinet with dates. It is an early warning system. A required package that has not been submitted is a visible risk. A package marked revise and resubmit is a visible risk. An approved package with no purchase release is also a visible risk. Each status points to a different action and a different responsible party.

I also track dependencies. A product data package may need design review. Casework may need completed walls before final field measurement. A deferred truss package may need both design professional review and building official approval. The log should make those dependencies obvious enough that the next handoff is not a surprise.

There is a practical distinction between tracking activity and tracking completion. A note that says the subcontractor is working on it is activity. A dated transmittal is evidence of submission. A returned review record is evidence of disposition. An approved package and released purchase order are evidence that the next stage can begin. I want documentation that shows the baton actually changed hands.

Long lead items must be identified early because their procurement duration can be longer than the field activity that precedes installation. Common examples include structural steel, custom heating and cooling equipment, elevator components, and architectural casework. The exact list depends on the project. The principle is to identify any item whose review, fabrication, or delivery duration threatens the sequence if it starts late.

I begin that review at project startup. I read the specifications, scan the drawings for custom and proprietary assemblies, talk with responsible subcontractors, and compare the procurement durations with the construction schedule. I do not wait for the field to be ready. By then, the item may already be late.

My backward plan includes room for review and correction. If the schedule assumes a first submission will return without comment, the schedule has no defense against an ordinary coordination issue. That does not mean I invent endless contingency. It means I recognize the documented review process and protect critical dates with reasonable float when the project schedule allows it.

Here is the schedule mechanism in plain language. A late submittal can create a late approval. A late approval can create a late order release. A late release can create a late delivery. A late delivery can block installation, testing, enclosure, finishes, or inspection, depending on the item. Not every delay reaches the end date because some work can be resequenced and some activities have float. But the contractor should know whether that flexibility exists before relying on it.

Delivery windows belong in the same plan. A truck arriving on the required date is not enough if the access route is blocked, the crane is not scheduled, the receiving crew is absent, or the storage area is unsafe. Procurement planning ends when the item is received, protected, and available for its intended sequence, not when a carrier reports that it left the warehouse.

I want to clear up 4 documents that are often blended together in conversation. Construction documents communicate the overall design, layout, specifications, and performance requirements. Shop drawings translate that information into fabrication, assembly, and installation details for a particular product or trade. A submittal is the package sent for review. A request for information is a question asking for clarification of an ambiguity, conflict, or omission.

My memory line is this. A request for information asks. A submittal offers. The first says, I cannot proceed confidently because the documents need clarification. The second says, this is the product or fabrication approach I intend to use, and here is the information for review.

That difference matters because the documents trigger different actions. A request for information needs an answer that resolves the question. A submittal needs a review disposition that tells the contractor whether the proposed item can proceed, needs correction, or does not conform. Treating one as the other can leave the real issue unresolved.

Shop drawings do not replace the construction documents. They are prepared by the subcontractor, manufacturer, or fabricator to express the detailed work of that participant. The design professional's review addresses general conformance with the design information. It does not mean the reviewer measured the opening or verified the contractor's field dimensions. The contractor still has to coordinate the actual conditions before fabrication.

This is why an approval stamp should never be read as permission to ignore the tape measure. The reviewer may confirm that the appearance, performance, and connection concept align with the design, while the contractor still owns the physical verification needed to make the work fit.

Custom fabrication is where theoretical dimensions meet the built project. Drawings describe the intended geometry. The field contains accumulated tolerances, actual finish thicknesses, and the final position of walls, floors, columns, and openings. The North American Architectural Woodwork Standards require shop drawings to indicate field measurements and clearly identify where those measurements differ from the original construction documents.

The comparison on screen uses a hypothetical reception desk. The plan dimension is 15 ft. After framing adjustments and finishes, the actual opening measures 14 ft. 10 in. The 2 in. difference is small on paper and decisive in finished casework. If the fabricator cuts premium material to the nominal dimension, the assembly may not fit. Field cutting can damage factory finishes, complicate reveals, create filler conditions, and delay completion. Measuring before final fabrication reduces that risk.

I think of the blueprint as a tailoring pattern and the field measurement as the client's actual measurement. A skilled tailor does not cut expensive cloth from a generic pattern without checking the person who will wear it. A skilled contractor does not authorize custom casework from a nominal opening without checking the finished condition that will receive it.

The sequence is important. The contractor confirms that the supporting work is sufficiently complete for a reliable measurement. The responsible trade takes and records the dimensions. The shop drawings are updated when the field differs from the documents. The revised information is routed through the required review. Final fabrication is released from the verified information.

Imagine a contractor who approves casework fabrication while the wall layout is still changing. The millwork arrives beautifully finished, but the opening is narrower than the shop drawing. The immediate problem is fit. The likely next choices are rework, filler, field modification, or replacement. Each choice can affect appearance, schedule, cost, and responsibility. The better control is not more force at installation. It is an accurate measurement before the expensive cut.

A deferred submittal is not a waived submittal. It is a component whose detailed documents are submitted after the initial permit, under a code controlled process. California Building Code Section 107.3.4.1 requires prior approval from the building official to defer an item. The registered design professional in responsible charge must identify the deferred items on the construction documents for review.

The specialized documents then go first to the registered design professional in responsible charge for review of general conformance with the building design. After that review, the documents are forwarded to the building official. The deferred item cannot be installed until the building official approves the deferred submittal documents.

The sequence on screen is the hierarchy I want you to memorize. Prior approval to defer. Identification on the construction documents. Preparation of the specialty package. Review by the design professional in responsible charge. Forwarding to the building official. Approval by the building official. Installation only after that approval.

Common examples can include prefabricated roof trusses, fire sprinkler systems, and specialized seismic anchorage. The exact deferred items are project specific and must be shown in the approved permit process. The word deferred changes the timing of the detailed review. It does not remove the review, and it does not authorize installation at the contractor's discretion.

The practical effect of the 2-stage review is coordination between the specialty component and the overall building. A truss manufacturer may engineer a proprietary assembly, while the project design professional evaluates general conformance with the primary design. The building official then performs the required code review. I do not turn that supported effect into a claim about legislative intent. I simply want you to understand the load path problem being controlled. A specialty roof component has to deliver its reactions into walls, diaphragms, foundations, and connections that belong to the larger design.

Suppose trusses arrive before the building official has approved the deferred package. Arrival is not approval. Payment is not approval. A design professional's review is not the building official's final approval. The contractor may stage the trusses safely, protect them, and continue other authorized work, but installation must wait for the required approval.

The procurement plan becomes physical the moment the truck reaches the site. Poor timing can turn valuable material into an access problem, a weather exposure problem, or a storage hazard. Better delivery coordination can shorten storage time and reduce congestion, but every delivered item still has to be handled under the applicable safety rules.

California Code of Regulations, Title 8, limits lumber piles to 20 ft. in height. Lumber intended to be handled manually must not be stacked higher than 16 ft. Sheetrock, plywood, trusses, and similar flat materials must not be stacked on edge unless they are positively secured against tipping or falling. Material inside a building under construction must not be placed within 6 ft. of a hoistway or inside floor openings.

The safety chart puts those numbers beside the handling rules. 20 ft. is the general lumber pile limit. 16 ft. is the limit for lumber intended for manual handling. 6 ft. is the clearance from hoistways, and material must never be stored inside floor openings. Flat materials stored on edge need positive restraint. These are separate rules, so I do not blend the numbers into one vague memory.

Unloading adds another coordination duty. Employees are prohibited from working under loads handled by lifting or digging equipment, and they must stand clear of vehicles being loaded or unloaded. That means the delivery plan needs a controlled receiving area and a sequence that keeps people out of the suspended load and vehicle zones.

Consider a hypothetical delivery of roof trusses to a crowded site. The crane is available, but the installation approval is still pending. The contractor cannot solve the paperwork delay by setting the trusses anyway. The contractor also cannot lean the trusses on edge without positive restraint or let employees stand beneath a suspended bundle. The correct response is coordinated staging, secured storage, controlled access, and installation only after approval.

This connection is worth remembering. A submittal delay can create a delivery mismatch. A delivery mismatch can create extra storage. Extra storage can create congestion and handling exposure. The paperwork and the safety plan are not separate worlds. They are two ends of the same coordination decision.

I use one final sequence to organize the entire topic. Identify the long lead item. Build its dates into the submittal log. Prepare the correct package. Resolve questions through a request for information when clarification is needed. Obtain the required reviews and approvals. Verify field dimensions before custom fabrication. Release the order from approved information. Coordinate the delivery window. Receive, secure, and protect the material. Install only when the documents and site are ready.

For deferred items, I add the California checkpoint. The design professional in responsible charge reviews for general conformance, the building official approves the documents, and only then can installation proceed. For stored materials, I add the Title 8 checkpoint. Respect the lumber stack limits, secure flat materials stored on edge, keep the required distance from hoistways, never store material inside floor openings, and keep employees clear of suspended loads and unloading vehicles.

The central lesson returns to the manufacturing clock. I do not confuse motion with progress. Emails, meetings, and promises are not the same as an approved submittal, a released order, a verified field dimension, or an accepted deferred package. The log turns those handoffs into visible commitments. That visibility gives the contractor a chance to protect the schedule, the fit of the work, inspection readiness, and the people receiving the material.

There is an audio practice quiz for this specific episode on lead times, submittal logs, and long lead material planning. It is audio based, with the questions read aloud and answers made by tapping, because I know you may be studying while driving, working, or moving between jobs. Go to the description below this video. You will see a link that says PassTheCSLB. Tap it. It will take you straight there. Comment below with any questions about the material I covered. Subscribe so I can help you stay on track through every episode until you get your license. I appreciate the time you are putting into this, and I want each study session to move you one clear step closer.