SERVICES
UTILITIES
Electrical, telephone and cable TV overhead lines are often encountered and may need to be de-energized or temporarily relocated during construction. SJH is capable of providing utility services including relocation of gas lines, water mains, electrical appurtenances, stormwater systems, drainage systems, sewers, cables and telephone conduits. Additionally, SJH is capable of developing utility agreements with service providers and coordinating with utility companies, and state and local government agencies.
HYDRAULICS & HYDROLOGY
Hydraulics and Hydrology involves analysis and obtaining permits for assignments, especially when structures cross over waterways. SJH utilizes HEC RAS analysis to analyze impacts of changes in hydraulic openings to check that there are no adverse impacts on either the upstream or downstream sides of the waterway. Analysis may need to be performed for various flood levels such as a 100-year or 500-year floods. SJH is capable of performing Stormwater Drainage designs so adequate drainage is available on roadways and other impermeable surfaces.
DRAINAGE
The SJH team is experienced in design services for stormwater management, and sediment and erosion control, with extensive experience in the design, construction supervision, management, maintenance, and operations of stormwater distribution systems, collection systems, and pump stations. We are also capable of designing drainage control structures and detention basins. SJH performs services including:
- Delineate drainage area and determine stormwater runoff rates
- Evaluate topography and hydraulic capacity of storm sewer systems and channel stability of the receiving channel where appropriate
- Evaluate issues and develop alternate solutions