Typical areas of specialization include:
Site Development
Residential Site Development Engineering
Commercial Site Development Engineering
Municipal Site Development Engineering
Institutional Site Development Engineering
All site development work includes the preparation of boundary survey, platting and topographic survey. Plan preparation includes site plans, grading plans, utility plans (water and sanitary sewer), drainage plans (drainage area map and storm sewer utility including detention facilities if required), erosion control plans and irrigation plans, construction staking and as-built surveys. HD can also assist land development clients with City permit requirements such as Notice of Intent, trench safety plans and environmental management plans (Storm Water Pollution Prevention Plans).
Site development clients include architects, land developers, contractors, other engineering companies and institutional clients such as school districts, airports, and governmental agencies.
*Note: HD is capable of assisting site development clients with any offsite utilities to serve the tract, including the design of water and sanitary sewer treatment plants, water storage facilities, and water and sanitary sewer distribution and pumping facilities.
For all projects, HD can offer comprehensive services to include surveying, geotechnical engineering, mechanical and electrical engineering, architectural and landscape/irrigation design, and construction management. Any services which are not offered directly by HD staff will be subcontracted to associate firms. These firms will then be managed by HD, thus providing the client with a single point of contact throughout the entire project.
Municipal Improvements
Street and Drainage Planning and Design
City Planning Consulting Services
Texas Community Development Block Grant Project Planning Design
Texas Capital Fund Project Planning and Design
Texas Water Development Board Funded Project Planning and Design
Regional Water Planning and Design
Water Treatment Plant, Water Storage Tanks and Pumping Plant Design
Water Distribution System (utility) Analysis and Design
Wastewater Collection (utility) System, Lift Station, and Treatment Plant Design
Parks and Recreation Facility Design
Water & Sewer Utility Rate Analysis
Financial Funding Recommendations and Analysis
Master Plans for Capital Improvement Projects
Environmental Impact Analysis
Wastewater Permitting & Responding to TNRCC violations
CCN Acquisition
Water District & Special Utility District Formations
*Note: All municipal improvement work would include interaction with city and other necessary agencies, report preparation, survey field work, preparation of construction drawings, preparation of project specifications and contract documents, assistance with advertising for and receipt of bids, processing contract document and project administration. Municipal clients include cities, counties and special utility districts.
SITE ENGINEERING SERVICES
The following is a typical project scope of work for most land development projects to include school, residential and commercial properties:
Preliminary Design
Meet with City staff to discuss water and sewer service to each site and requirements for fire protection, as well as drainage and street related issues.
Prepare preliminary water, sewer, grading, street access and drainage plans for review with client and discussion with City staff.
Visit with members of architectural staff to discuss our design concept and overall approach to the project. Make any changes deemed necessary prior to proceeding into final design.
Prepare a preliminary calculation of excavation and fill to determine how the earthwork for the site balances.
Provide client with a preliminary summary of our design assumptions, city requirements, and any additional information that may be necessary to finalize site and grading plan.
Provide a preliminary cost estimate of all proposed civil improvements.
Final Design
Prepare final plan and profile sheets for all civil improvements, including water, sanitary sewer, streets, grading, parking, and drainage facilities.
Based upon final site plans provided by architect, prepare grading plans for proposed improvements and confirm finished floor elevation sufficiently high enough to ensure good drainage away from foundation.
Provide client’s office with a reproducible copy of all civil improvements.
Assist client in processing these plans through the city to obtain approval of all plans for which we are responsible.
Make necessary revisions to satisfy the city requirements.
Provide client with a quantity take-off, in proposal form, for civil improvements to include in your contract documents.
Construction Phase
Answer any questions during bidding process regarding plan interpretation and provide addendums as required.
Provide periodic site visits during construction to assist in decisions regarding materials and workmanship of the contractor.
Provide assistance in conducting the final inspection.