12th and Sansom Streets

Project Overview

A proposed 20-story residential building is planned at 12th and Sansom Streets in Philadelphia, Pennsylvania. The building will host underground parking and 412 residential units. GeoStructures was retained by Greystar Development to provide pre-demolition surveys, vibration monitoring, and construction inspection and materials testing for the project.

A pre-existing parking garage was demolished on the proposed building footprint. GeoStructures performed 13 pre-demolition surveys of adjacent properties to document the conditions prior to project kick-off. During construction, two geophones and a microphone were installed in adjacent structures to monitor construction vibration activity and noise for the duration of the project.

GeoStructures also performed construction inspection and materials testing, including footing and mat foundation bearing verification, soil backfill and compaction testing, rebar inspection, floor flatness inspection (F-number), structural steel inspection, fireproofing, and cast-in-place concrete.

Construction Inspection and Materials Testing

Vibration Monitoring and Analyses

Our Comprehensive Project Workflow: Step-by-Step Guide

01.

Initial Consultation and Client Needs Assessment

Our team responds promptly to your inquiries, ensuring timely communication and immediate attention to your project needs. We work closely with clients to understand all project requirements, ensuring that we capture every detail and objective from the start.

02.

Development of Work Plan

Our expert project managers extend innovative problem-solving to project planning, resulting in technically-sound, cost-effective work plans to better serve our clients.

03.

Project Proposal and Agreement

We provide a detailed project proposal outlining the scope of work, fee schedule, and agreement terms. The project begins once the proposal is approved.

04.

Execution and Quality Assurance

Our highly skilled team of principals, project managers, engineers, and field staff execute the project with precision, maintaining open communication to ensure alignment with client expectations. Each project undergoes a rigorous quality check by our team of licensed professional engineers, ensuring all deliverables meet our high standards of excellence.

05.

Project Delivery and Invoicing

Upon completion, we deliver the final project and issue an invoice for the completed work, ensuring full transparency and satisfaction.