Planning Rationale
General
The AOR/EOR is responsible for reviewing the Elevator Specification sections in detail for coordination with the Project Scope of Work.
- Any modifications to the technical standards in the elevator Specifications must be approved by CPS. Requests for modification are to be submitted to the Design Manager during the Design Phase for review and approval by CPS.
- The strategy of the Elevator Specifications is to provide a limited number of components for each elevator sub-system for maintainability.
- The Specifications are performance based and include generic components for each sub-section.
- CPS does not utilize pre-engineered elevator equipment since the CPS requires enhanced C-3 loading criteria and specific cab dimensions to accommodate ambulance stretchers and cleaning equipment.
- AOR to confirm all “Work by Others” is shown on the drawings and specified in the other specification sections of the project manual.
- Contractor shall coordinate the work identified with the other contractors.
Location
service all floors of the building. It is also desirable to have the elevator in close proximity to the Nurse’s Suite. If assembly spaces such as the gymnasium are on an upper levels the elevator must be located such that the public can access it.
FOR RENOVATION PROJECTS, AN ALTERNATIVE ELEVATOR LOCATION SHALL BE IDENTIFIED FOR DEVELOPMENT IN CASE THE PRIMARY LOCATION IS FOUND TO BE UNSUITABLE FOR THE PROPER INSTALLATION OF THE SELECTED ELEVATOR TYPE.
Elevator Shaft
- Enclosure to be considered in the selection and function of structural systems and elements, these enclosures should be considered in serving the dual purpose of a lateral support system.
- Elevator shaft enclosure material to be CMU or Cast-in-place concrete construction.
- It is common practice that a roof be penetrated to accommodate elevator overrun and related structure.
Safety and Code
The AOR shall ensure that the elevators are code compliant and that all elevators must address electrical, life safety, accessibility, and all other requirements necessitated by Code.
CPS Standard Elementary School Elevators Not Requiring Special Approval.
A minimum of one elevator shall be provided which serves a dual purpose of both a passenger elevator and as a service elevator
- Holeless Hydraulic Passenger: Specification Section 14 24 23 shall be utilized when providing one or more elevators with a 3,000 pound capacity with a travel distance of 48’-0” or less.
- Vertical Platform Lift: Specification Section 14 42 00 shall be utilized when CPS requires a vertical platform lift for access to a stage. Lifts shall typically not be utilized for any other access.
CPS Standard High School Elevators Not Requiring Special Approval.
High Schools shall be planned to have two elevators, one for passenger use ONLY and one for service use.
- Holeless Hydraulic Passenger: Specification Section 14 24 23 shall be utilized when providing one or more elevators with a 3,000 pound capacity with a travel distance of 48’-0” or less.
- Holeless Hydraulic Service: Specification 14 24 25 shall be utilized when providing an elevator when CPS requires a 4,000 pound capacity (in lieu of 3,000 pound capacity) in a High School with a travel distance of 48’-0” or less.
- Vertical Platform Lift: Specification Section 14 42 00 shall be utilized when CPS requires a vertical platform lift for access to a stage. Lifts shall typically not be utilized for any other access.
Special Application Elevators
CPS APPROVAL IS REQUIRED FOR THE FOLLOWING ELEVATOR / LIFT TYPES:
- Holeless Hydraulic Service - Elementary Schools: Specification 14 24 25 shall be utilized when providing an elevator when CPS requires a 4,000 pound capacity (in lieu of 3,000 pound capacity) in an Elementary School with a travel distance of 48’-0” or less.
- Traction Passenger: Specification Section 14 21 00 shall be utilized when providing one or more elevators with a 3,000 pound capacity with a travel distance greater than 48’-0” with front openings ONLY.
- Traction Service: Specification 14 21 02 shall be utilized when providing an elevator when CPS requires a 4,000 pound capacity in lieu of 3,000 pound capacity in a High School with a travel distance over 48’-0” with front openings ONLY.
- Limited Use Limited Application Elevators (LU/LA): Specification 14 26 00 shall be utilized when providing vertical transportation with a 1,400 pound capacity at an Elementary or High School with maximum travel height of 25 feet with One Front / One rear Exit ONLY. (For Passenger Use ONLY – Not for equipment or material loading).
- Vertical Platform Lift: Specification Section 14 42 00 shall be utilized when CPS requires a vertical platform lift for non-stage access applications. (Maximum 42 inch travel distance.)
Any elevator installation of five or more stories or a travel distance greater than 48’-0” is to be an electric traction overhead type elevator. Additionally, for any installation of five or more in-line landings or travel distance greater than 48’-0”, CPS shall evaluate to make final determination of the elevator type that is appropriate for use.
Please note that Roped Hydraulic, MRL Hydraulic, MRL (Machine-Room-Less) Traction or Confined Space MRL Elevators do not typically meet CPS Standard Class C-3 Loading requirements.
Elevator Consultant
AOR and Design Manager to consult CPS Assigned Elevator Consultant for questions and strategy on all projects.
Size
- The size of the elevators, the hoistways and the elevator machine rooms shall be per the “Standard Elevator Dimension Table” associated with the individual Elevator Data Sheets. Refer to standard CPS elevator drawing sheet.
- CPS Standard elevators have been sized to accommodate an ambulance stretcher and CPS Standard cleaning equipment. Refer to standard CPS elevator drawing sheet.
Loading
All passenger and service elevators are Class C-3 (50%) Loading with CPS Special Cab Design as follows:
- 3,000 pound capacity elevators have 1,500 single load design with 750 pounds on the hoistway sill.
- 4,000 pound capacity elevators have 2,000 single load design with 1,000 pounds on the hoistway sill.
- CPS Special Cab Design includes 14-gage 5WL stainless steel removable wall panels and cab doors.
- Hoistway entrance walls shall be constructed of concrete masonry units to provide protection from impact forces that may be imparted by operations / activities associated with required CPS standard Class C-3 loading criteria.
Floor Designations
- The designations for the elevator push buttons shall match the floor designations for the school.
- The 1st floor of the school shall be “1”, the second floor of the school shall be “2”, the third floor of the school shall be “3”.
- The 1st floor shall typically be an accessible floor, and the designation shall have a star with the “1”.
- The 1st floor not be accessible and an accessible entry is provided which is not on a floor of the school, the designations shall be “G” and have a star.
- Should there be a floor below the 1st floor which has classrooms, the designation shall be “LL”.
- Should there be a floor below the 1st floor which does not have any classrooms, the designation shall be “B”.
- Should the elevator open to two levels of a floor, then the elevator shall have an added designation of “R” for the Rear Door (i.e. 1R, 2R, LLR, BR).
- On elevators with front and rear doors, the front door is the side of the elevator cab which has the accessible floor (the star).
- All room numbers on a floor shall start with the floor designation (i.e. 101, 201, LL01, B 01) and the floor designations shall match the nomenclature utilized for the fire panel.
Second Elevator
In situations where an additional passenger elevator is included in the project (typical new High School or if travel distance is higher than 48’-0”) the standard is to provide a 3,000 pound passenger elevator in addition to the service elevator.
Machine Rooms
- Machine rooms shall be interior located, conditioned spaces.
- Wherever possible, machine rooms shall be adjacent to the hoistway at the lowest level of service, with the machine room door located off of a public corridor, directly accessible to the hoistway opening (within 20’-0”)
- Machine rooms and hoistways must be located on the same side of any building expansion joint.
- Machine rooms shall not be located next to conference rooms, office spaces, and classrooms.
- Machine rooms located next to occupied spaces shall be constructed to restrict any sound generated from the equipment to spaces outside of the machine room areas.
- Permanent non-combustible stairs with handrails / guardrails shall be provided where floor levels for access of the machine room are different from the typical floor levels.
- Access through the machine room to access other equipment and another area (including the roof) is prohibited.
Padding
- Equip the service elevator interior with hooks for protective padding.
- When in service, the protective padding shall be hung on wall mounted hooks within the machine room.
- By Code, the pads shall be utilized ONLY when the elevator is in “Independent Service” mode while moving equipment or material(s).
“Work by Others”
Section 1.06 of each Elevator Specification Section includes Preparatory Work not included in the Elevator Contract - Work by Others, which is to be coordinated by the General Contractor and is to be included in other Sections of the General Contractor’s Work.
The AOR is to confirm that all “Work by Others”, as listed in Section 1.06, is shown on the drawings and is specified in the other specification sections of the project manual (including, but not limited to, the 50 gpm sump pump).