Builder & Trade Coordination
Low-voltage devices compete for walls, ceilings, millwork, site routes, and equipment rooms used by electrical, HVAC, framing, drywall, door hardware, landscape, pool, fire protection, and other trades. An access point under a duct, a projector sharing a location with a sprinkler or light, or a shade pocket cut off by framing is not a paperwork problem. It is an engineering and sequencing conflict that can prevent system performance or service.
Builder coordination resolves those interfaces before they become field improvisations. GGIS translates technology requirements into dimensions, loads, pathways, clearances, and dated decisions, then tracks them through the GC’s process. A responsibility matrix assigns power, low voltage, blocking, pathways, finish openings, firestopping, and related infrastructure to named parties so required work does not disappear between bid packages.
What we deliver
- Responsibility matrix assigning ownership of power, low voltage, blocking, pathways, finish openings, firestopping, sleeves, and service access
- Composite ceiling review resolving access points against ducts and diffusers, projectors against sprinklers and lighting, and speakers against structure
- Wall and millwork coordination for displays, keypads, cameras, door stations, recessed equipment, backing, ventilation, and removable panels
- Shade-interface review addressing pocket dimensions, framing, power or control wiring, fascia clearances, and access before enclosure
- Equipment-room planning for rack footprint, circuits, heat rejection, bonding provisions, cable entry, door swing, and maintenance clearance
- Site coordination among landscape, pool, electrical, and low-voltage work for exterior conduit, cameras, WiFi, audio, controls, and drainage exposure
- Decision and dependency log linking RFIs, submittals, approvals, procurement dates, responsible parties, and schedule activities
- Risk-based field reviews at framing, rough-in, wall close, trim, and pre-commissioning with unresolved interfaces carried to closeout
How we approach it
We overlay technology plans with architectural, structural, reflected-ceiling, electrical, HVAC, fire-protection, millwork, door, landscape, and pool information. We look for physical and operational conflicts: an AP hidden by ductwork, a projector blocked by a sprinkler or pendant, a camera view cut off by landscape, or a shade pocket occupying required framing. Equipment rooms and backbone pathways are checked early because errors there affect every subsystem. Open choices receive an approver and last responsible date tied to framing, rough-in, procurement, or finishes.
The coordination record converts each interface into accountable inputs and outputs. A responsibility matrix states who furnishes and installs power, low-voltage cable, conduit, sleeves, pull boxes, blocking, finish openings, firestopping, bonding infrastructure, and access panels. Product submittals are reviewed for dimensions, mounting, power, heat, protocols, and service requirements; a similar substitute can still invalidate backing or ventilation. RFIs show the conflict, decision, affected trades, and schedule consequence. Authorized responses are incorporated into drawings, schedules, and the open-item log.
Field observations are timed to decisions that will soon become inaccessible. Framing reviews verify backing, pockets, sleeves, and box support; rough-in reviews address routes, separation, elevations, rack entries, and cable protection; finish reviews check openings, trim depth, ventilation, and service removal. Conflicts are photographed and routed through the GC with ownership and due dates rather than solved through unrecorded direction between trades. Installing trades retain their own permits, supervision, safety, code compliance, and means and methods.
Before functional testing, the team verifies dependencies rather than consuming commissioning time on unfinished construction. Permanent power, network and ISP service, equipment-room conditions, finished doors, shade movement, controlled loads, camera views, and safe access must be available as required by the test plan. Open items are classified as functional blockers, quality corrections, documentation gaps, owner decisions, or accepted exceptions. Closeout reconciles approved changes with as-builts, required cable-test records, equipment information, and training. Coordination status reports whether known interfaces were resolved; it does not certify another trade’s installation or replace AHJ review.
Frequently asked questions
Why is a responsibility matrix necessary when scopes are already contracted?
Trade scopes often name systems but leave the interfaces unstated. A shade contractor may expect power and pockets by others; the electrician may exclude control wiring; framing may not include backing; millwork may assume someone else defines the opening. The matrix assigns furnishing and installation responsibility for each supporting element, along with dates and acceptance evidence. It supplements the contracts by exposing gaps for formal resolution; it does not rewrite contractual authority.
What technology conflicts most often affect the construction sequence?
Ceiling and concealed-space conflicts lead the list: access points below ducts, projectors competing with sprinklers or lighting, speakers against framing, and shade pockets without the required cavity or wiring access. Rack power and cooling, structural sleeves, display backing, recessed boxes, millwork ventilation, door-station interfaces, and exterior pathways also become costly after closure. We rank them by consequence and last responsible date so the project resolves irreversible geometry before cosmetic selections.
Does GGIS direct the work of electrical and low-voltage contractors?
No. GGIS identifies interfaces, develops coordination information, tracks authorized decisions, and observes agreed milestones. The GC manages trade sequencing and contractual direction, while each contractor remains responsible for its labor, supervision, permits, safety, means and methods, and code-compliant work.
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