CONSTRUCTION + EVALUATION Flashcards
How long should architects keep project files?
~ 15 years
*or past the statute of limitations
AIA D200
Project Checklist
- Bidding and Negotation (Pre-Construction)
- Construction Contract Administration
- Post-Construction
What are the project conditions necessary for Substantial Completion to be certified and the owner to occupy a project?
Nothing can be outstanding that prevents the owner’s full use of the building.
*Does not include touch-ups, small repairs, or omissions
What typical responsibility of the architect does the construction manager take for a CM as Advisor project?
Preparation and management of change orders.
Unit price
A price given when the basic scope is clear, but the extent is unknown. (e.g. excavation price per cubic yard of soil moved)
Types of contractor submissions and their protocol
Pay App (G702) see example here Changes Order (G701) see example here *These forms must come to the Architect first, who then checks them for adherence to contract standards, then sends them to the Owner for payment
Bidder’s representation
Certifies Contractor understands bid documents and has visited site in preparation to bid
Non-conforming work protocols
Only the Owner can accept non-conforming work
The Architect should keep careful records of any non-conforming work
The Architect must insist on conformance in matters of code, health, safety, and wellness
What are the architect’s responsibilities in pre-construction?
Prepare final contract documents
Administrate the bid and selection process (to see the AIA document for bidding, go here)
Agency review
Agency review: The architect’s building code check with the AHJ (authority having jurisdiction).
The AHJ is often the life safety code inspector, but can also be the elevator inspector, or electrical inspector . . . even the insurance company rep demanding a non-slip floor surface or the labor board rep demanding ergonomic nursing work stations are AHJs. When their requirements conflict, you, the architect, need to meet the most stringent requirement.
What are the architect’s responsibilities in a Construction Manager as Advisor project?
The Architect remains the Initial Decision Maker. The CM becomes the point of contact for RFIs, coordination between Contractor and Owner, and administers Construction Change Directives
An architect is designing a hotel that will be paid for with a loan. If the owner-architect contract stipulates that the architect’s fee will be 7% of construction costs, will the architect’s fee include 7% of the cost of financing?
The Owner’s budget for the Cost of the Work– which is what that 7% fee is based on– does not include the cost of financing. It also does not include the costs of the land, or the compensation of the architect.
The Initial Decision Maker has __ Days to initiate action on a claim.
Answer: 10 days
The contract gives the Initial Decision Maker (IDM) role to the architect, by default, unless otherwise specified. It is up to the parties in the contract to change the IDM to someone else. The IDM can try to settle tough calls between the contractor (who may wish to use change orders to pad her profits) and the owner (who desperately doesn’t want to pay more in change orders).
The contractor must transfer all property titles to owner…(by when)
no later than the time of final payment.
Allowance
Allowance: A place-holder price when full cost is unknown, but the work is necessary. We may want to give individual apartment tenants the option to later select their own appliances. Yet we want to account for the cost of these appliances so we can accurately apply for a construction loan, pay the contractor, and keep to a budget.
Part of your job is to carefully plan every aspect of the construction process, but sometimes a job starts with decisions left unmade, often for good reasons. Allowances give us flexibility as the construction unfolds, but because they include approximate costs of not-fully-baked intentions, they also keep everyone honest and expectations realistic.
You want to get the bidders to account for allowances and alternatives in the bid documents, so the contractor can’t fleece the owner later with change orders.
When are allowances most often used? In lump sum or guaranteed maximum price (GMP) construction projects. Why? Because we need a solid price at the start of the work to pay the contractor. Allowances give us wiggle room (but too many allowances on a single job may lead to disputes).
Phases of IPD
For IPD, the contracts have new phase terminology for old concepts
- Conceptualization (kind of like programming)
- Criteria Design (schematic design)
- Detailed Design (design development)
- Implementation Documents (construction documents)
- Agency Coordination/Final Buyout (permits and approvals secured; all subcontractors committed)
- Construction
- Closeout (as-built drawings)
How long does the contractor have to notify the owner and architect of unexpected existing conditions?
14 days is the deadline for notification of unexpected existing conditions
21 days is the deadline for filing claims if unexpected conditions arise
The winning bidder proposed a price for the apartment renovation, but just discovered that the existing roof structure has rot. He must let the owner know now so that if the price must be adjusted, it can be adjusted at the beginning. . . he cannot suspiciously claim he needs more money at the end by reporting he found the undocumented rot 14 months ago.
Submittal
Definition, Protocol, and Examples
Submittals are product information submitted to show adherence to contract documents. The Contractor submits them to the architect for review and dissemination to architect’s consultants, then approvals move back through the architect to the contractor.
Examples: Product choices, cut sheets, color and material offerings, shop drawings, samples, etc.
Hydrostatic pressure
Hydrostatic pressure:A force that causes water to come up through cracks in foundations, causing mildew, mold, foundation damage, decay and other water-related issues.
In buildings, hydrostatic pressure is most associated with foundations, basements, retaining walls, and any water-resistant surface that sits against wet earth. See a diagram here or a short video here.
To address hydrostatic pressure at foundation walls: slope the soil away from the building; create a capillary break with gravel backfill (old way) or dimple core drainage composites, which look like this and attach to a wall in the field like this. And bury a perforated pipe, holes turned to the side, so that as water drops down the capillary break, it fills up the pipe and is carried downhill to daylight.
What is the purpose of AIA Document G703 “continuation sheet”?
AIA Document G703 “continuation sheet” is a sidecar to the contractor’s monthly application for payment. See an example here.
For the contractor to be paid this month, she must show you that she’s done the work she’s invoicing for, and you, the architect must approve her application for payment (AIA Document G702). This G703 sidecar document is a list of the work (e.g. HVAC system installation), the scheduled value of the work ($100,000), the cost of the work completed before this month ($20,000), what was completed this month ($10,000), materials already purchased and presently stored ($7,000 for an air handler, purchased, but not yet installed), the percentage complete (37,%), the balance to finish ($63,000), and retainage ($1,350).
Retainage is some agreed-upon percentage of the payment owed to the contractor that we are holding back to ensure she doesn’t walk off the job and leave us with a half-finished building. Upon substantial completion, she’ll be paid her total retainage–the cumulative portions we kept from her each month– minus double the cost of the punch-list items that must be addressed before final completion is awarded. The actual amount of retainage varies with the specific job and contract, and generally ranges between 5% and 10% (let’s say 10% for this example). Annoyingly, we may hold a different percentage back for materials purchased, stored, and not yet installed (the air handler). . . .in our example we’ll also hold back 5% of the cost of stored materials. So we’re holding back 10% of the $10,000 invoiced this month for work completed, plus 5% of the $7,000 for materials stored.
Sample
Physical examples of goods and materials; a type of submittal.
When bolting steel members, how do we know that the nuts are tight enough to meet structural requirements?
Turn-of-Nut Bolting Method: a preset goal is established for how far the nut needs to be tightened. For instance, steel workers tighten 1/3 of a turn (120 degrees) after the nut makes contact with the steel. The nut is snug-tightened, then marked so that we can later see that it has been tightened the required extra turn. To see an example, go here.
Calibrated Wrench Method: an electric wrench is calibrated to stop at a predetermined amount of torque, and each nut is tightened until the wrench’s torque guage tells it to stop. The wrench must be recalibrated each day, so this method works best with small jobs where all the bolts can be tightened in one shift. To see how the wrench is calibrated prior to the iron worker’s shift, see here.
Direct Tension Indicators: metal wrings that look like washers are slid on the bolt-nut assembly before tightening. We know the bolt is tightened enough when bumps on the direct tension indicators (washers) have been sufficiently crushed. This can be seen by the eye, but should be measured with a “feeler guage.” Direct tension indicators are the simplest method of ensuring proper bolting because the operator can easily see if a bolt is not sufficiently tightened. For this reason, it is also the technique least likely to result in insufficiently tightened bolts and it is often the least expensive option. To see this in action, go here.
Squirter Direct Tension Indicators: same as regular direct tension indicators, only instead of crushing bumps on the “washer” to ensure it is tight enough, the bolts are tightened until silicone embedded in the direct tension indicator “washer” squirts out. To see direct tension indicators and squirter direct tension indicators, go here.
Twist-Off Bolts: Part of a special proprietary bolt breaks off automatically when it is sufficiently tightened. This requires a particular type of wrench. To see what this looks like, go here.
In critical situations, three samples of an entire bolt assembly may need to be tested prior to shipping the lot of bolts, nuts, and washers to the jobsite. An example of that testing can be seen here.
AIA G712
Shop drawings and sample record. See an example here.
It’s a log of fabrication drawings and samples submitted by the contractor with the date submitted, the subcontractor trade, and whether or not the sample or drawing was approved by the architect.
Informational submittals
Submittals not requiring approval by the architect sent by the contractor to verify conformance to the contract.
*e.g. Coordination drawings, performance calculations
What are the architect’s pre-construction activities?
Providing assistance with the bid process
Why is it important for architects to be involved in the construction phase?
- Most claims against the architect occur in the construction phase.
- The design intent is more likely to be met if the architect engages with the construction phase
- Some states even require the architect to be involved if they have stamped the construction drawings.
What are the architect’s responsibilities in post-construction?
Certificates and inspections Maintenance and operations Start-up (break-in period to run the AHUs, chillers, boilers, sinks, toilets, etc. and confirm everything works) Record drawings Warranty review Post-contract evaluation
A facility performance evaluation is another term for…
Post-occupancy evaluation (POE).
POE determines if the building performs as intended
It has the side benefit of strengthening the client-architect relationship and can serve as a powerful learning tool for the architect to see what went right–and what needs improvement next time.
Six months or a year after occupancy, the architect will go in (at an extra charge because POE is not a base service in the contract) and test the space for functionality and comfort: energy use, water use, thermal comfort, acoustics, lighting, wayfinding, workflows, user satisfaction surveys, and overall design.
When is the latest a contractor can ask a question during bidding?
7 days prior to bid due date
What are the architect’s responsibilities for substantial completion?
Certifying the architect’s and architect’s consultants’ scope of work
*This specifically does not include the scope of work for the owner’s consultants