Underground Parking Structures
Commercial underground parking structures in Allen, TX
As a general contractor working directly with developers and property owners, we deliver underground parking structures services for commercial and industrial properties throughout Allen, TX and the DFW metroplex. No subcontracting, just our experienced crews, your project, and clear accountability.
Service Overview
Underground parking structure construction involves complex concrete work where waterproofing, durability, and structural performance are all critical. These structures must support building loads above while resisting soil and water pressure from outside, all in an environment that is difficult to access for repairs.
Waterproofing is paramount in underground structures. We construct walls and slabs that integrate with waterproofing systems, install water stops at joints, and coordinate with waterproofing contractors on membrane applications. The goal is a dry structure that remains dry for the life of the building.
Concrete durability for underground parking must address the aggressive environment. De-icing salts, vehicle exhaust, and moisture create conditions that attack concrete. We specify concrete mixes with low permeability and appropriate cover to reinforcing to resist these conditions.
Construction sequencing for underground structures requires careful planning. Dewatering, shoring, and below-grade work must proceed in proper sequence. We coordinate with other trades to maintain safe working conditions while advancing construction efficiently.
What's Included
Scope inclusions for commercial underground parking structures
- Foundation and bottom slab construction
- Wall construction with water stops
- Intermediate slab installation
- Column and ramp construction
- Top deck construction
- Waterproofing coordination
- Drainage integration
- Quality control and testing
- Inspection coordination
Common Project Situations
Frequently Asked Questions
Common questions about underground parking structures
How do you ensure underground parking structures remain dry?
Waterproofing requires an integrated approach: low-permeability concrete, water stops at all joints, coordination with membrane systems, and proper drainage. We construct with waterproofing as a primary concern from design through completion.
What concrete specifications apply to parking structures?
Parking structure concrete typically requires low permeability, minimum 4000 PSI strength, and adequate cover to reinforcing. Specific requirements depend on exposure conditions and structural requirements. Air entrainment is standard for freeze-thaw resistance.
How do you handle construction below the water table?
Construction below water table requires dewatering during construction. We coordinate with dewatering contractors, monitor water levels, and sequence work to minimize groundwater impact. Permanent drainage systems may be included in the design.
What is the construction sequence for underground parking?
Typical sequence includes excavation and shoring, bottom slab construction, wall construction (often in lifts), intermediate slabs, and final deck. Waterproofing and backfill proceed as appropriate for the sequence.
How long does underground parking construction take?
Timeline depends on size and depth. A typical single-level structure might require 3-4 months for concrete work. Multi-level structures take longer. Weather and site conditions affect the schedule.
Example Project Capability
Representative project scope
Situation
Corporate developer needed below-grade parking to maximize buildable area on constrained urban site
Scope
Two-level underground parking structure with 180 spaces beneath office building
Our Approach
Coordinated with waterproofing system, achieved dry structure despite high water table, completed construction supporting building schedule
Expected Outcome
Parking structure dry and operational, building completed on schedule, no waterproofing issues after 4 years
Contact us to discuss your parking structure project in North Texas.
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