Hydraulic Elevators: In-Ground Passenger

In-Ground Passenger Hydro

In-Ground Car Type Summary

The traditional elevator application that has been used for many years. The jack is located directly under the platform in the ground and is protected from the ground using a PVC liner.

Advantages

Material cost for this package is less expensive than all other car types. The package is the easiest to install and is available in both low and high-capacity applications.

For freight options, heavy freight cars are typically always in-ground. The pit depth and overhead dimensions are typically standard, not requiring any extended dimensions – even though the travel can be several landings.

Disadvantages

The jack is located underground, and oil contamination is remotely possible. The PVC liner provides protection between the cylinder and the actual soil. Geographic areas which experience seismic activity will present the greatest risk of oil contamination. The jack (single stage) must go down into the ground the same distance as the travel. Drilling a jack hole can be expensive depending upon ground conditions.

See chart below:

Low Capacity Standard Dimension & Specification for In-ground Passenger

Please contact DEM EE on all for drawings.

CAPACITY (LBS.)	OPENINGS F=FRONT R=REAR	DOOR TYPE AND WIDTH	PLATFORM SIZE: W X D	HOISTWAY DEPTH PLATFORM PLUS	HOISTWAY SIZE: W X D	CLEAR INSIDE W X D	RUNNING CLEARANCE SILL/PLAT	SILL DEPTH REQ’D’
2100	F	1SP 36”	6’-0” x 5’-1”	9”	7’-4” x 5’-10”	5’-8” x 4’-3”	1”	5”
2100	F&R	1SP 36”	6’-0” x 5’-8”	12”	7’-4” x 6’-8 1/2”	5’-8” x 4’-4”	1”	5”
2500	F	1SP 42”	7’-0” x 5’-1”	9”	8’-4” x 5’-10”	6’-8” x 4’-3”	1”	5”
2500	F&R	1SP 42”	7’-0” x 5’-8”	12”	8’-4” x 6’-8 1/2”	6’-8” x 4’-4”	1”	5”
3000	F	1SP 42”	7’-0” x 5’-6”	9”	8’-4” x 6’-3”	6’-8” x 4’-8”	1”	5”
3000	F&R	1SP 42”	7’-0” x 5’-11”	12”	8’-4” x 6’-11 1/2”	6’-8” x 4’-7”	1”	5”
3500	F	1SP 42”	7’-0” x 6’-3”	9”	8’-4” x 7’-0”	6’-8” x 5’-5”	1”	5”
3500	F&R	1SP 42”	7’-0” x 6’-9”	12”	8’-4” x 7’-9 1/2”	6’-8” x 5’-5”	1”	5”
3500H	F	2SP 42”	5’-4” x 8’-4”	11”	6’-8” x 9’-3”	5’-0” x 7’-4”	1”	6 ½”
3500H	F&R	2SP 42”	5’-4” x 9’-0”	15”	6’-8” x 10’-3 1/2”	5’-0” x 7’-4”	1”	6 ½”
4000	F	1SP 48”	8’-0” x 6’-3”	9”	9’-4” x 7'-0”	7’-8” x 5’-5”	1”	5”
4000	F&R	1SP 48”	8’-0” x 6’-9”	12”	9’-4” x 7’-9 1/2”	7’-8” x 5’-5”	1”	5”
4000H	F	2SP 48”	6’-0” x 8’-5”	11”	7’-4” x 9’-3”	5’-8” x 7’-5”	1”	6 ½”
4000H	F&R	2SP 48”	6’-0” x 9’-1”	15”	7’-4” x 10’-4 1/2”	5’-8” x 7’-5”	1”	6 ½”
4500H	F	2SP 48”	6’-0” x 8’-9”	11”	7’-4” x 9’-7”	5’-8” x 7’-9”	1”	6 ½”
4500H	F&R	2SP 48”	6’-0” x 9’-6”	15”	7’-4” x 10’-9 1/2”	5’-8” x 7’-10”	1”	6 ½”
5000H	F	2SP 48”	6’-0” x 9’-8”	11”	7’-6” x 10’-7”	5’-8” x 8’-8”	1”	6 ½”
5000H	F&R	2SP 48”	6’-0” x 10’-4”	15”	7’-6” x 11’-7 1/2”	5’-8” x 8’-8”	1”	6 ½”

Approximate Clear Inside Dimensions of Cab

Width = Platform Width less 4”

Depth = Front Open Only

SSSO & CO Doors = Platform Depth Less 10” 2SSO Doors = Platform Depth less 12”

Depth = Front & Rear Open

SSSO & CO Doors = Platform Depth Less 16” 2SSO Doors = Platform Depth less 20”

DBG (Distance Between Guides)
Platform Width plus 3 ¼” 12# / 15# rail depth= 3 ½”

Overhead Required Quick Calculation

Regardless of what the travel is, the standard minimum overhead is 12’-6”.

Consult your DEM EE representative if your overhead is less than 12’-6”.

Pit Depth	4’-0”
Piston Bottom Under-travel	12”
Car Speed	Up To 150 FPM
Cab Height	8’-0”
Piston Top Over-travel	5