CIBSE Lifts Group

Annual Seminar 2017

CIBSE 222 Balham High Road, London SW12 9BS

1 November 2017: 14:00 - 17:30

 

PROGRAMME

 
12:00 EXHIBITION OPENS
 
13:30 REGISTRATION
 
14:00 WELCOME:  Len Halsey, Chair CIBSE Lifts Group
 

14:05 SESSION 1: Chair, Adam Scott

EN 81:20/50 as a Key Driver for Innovation in the Next Generation of Lifts

Dennis Major

The EN 81-1-2 standards were replaced by EN 81-20 / 50: 2014 on August 31st, 2017. This paper covers some topics to be considered in the implementation of the new standard. Innovative approaches for alternative suspension systems and safety devices are possible: the introduction of mechatronic systems opens up entirely new ways to dispense with conventional speed limiters in the near future and fail-safe electromechanical brakes are just some examples. The challenges to master this technology in the context of a complete lift and how to cope with the increasing complexity for installation, testing and maintenance by developing complete 3D models for each project are also discussed in this paper.

Suspension Systems under Seismic Excitations

Stefan Kaczmarczyk

Lift systems are susceptible to damage when a building is subjected to strong earthquake motions. The counterweight - guide rail and car guide rail systems particularly suffer from earthquake-induced vibrations. The most common mode of failure is counterweight derailment. This paper reviews the dynamic phenomena and presents a robust model to study, to predict and to mitigate the effects of the seismic responses of guide rail, counterweight/ car suspension systems.

Some Thoughts on Rope Life

Julia Munday

Before the early 1980s the lift industry, in the UK at least, was very different to how it is today. Lift manufacturers designed, installed and maintained their own equipment “in house” and 25-year comprehensive maintenance agreements were not uncommon. As a result, each manufacturer built up a large store of knowledge derived from practical experience. This allowed their products and procedures to evolve and led to improvements in the working life of consumables like ropes. Because of the changes in the industry and the vagaries of time this knowledge is slowly disappearing. This paper seeks to pass some of this knowledge on to new generations of engineers where a different perspective may help to solve some of the problem they face today

 
15.35 BREAK
 
16:00 EXHIBITION CLOSES
 
16.00 SESSION 2: Chair, Michael Bottomley
 

Our Accessible World and the New Part 70

Adam Scott

Advances in education, diet and medicine have brought wonderful benefits to us all over recent decades, not least of which is the potential to live longer. The average age is on an upward trend creating a growing need for us to influence our built environment in such a way as to maintain and improve accessibility. BS EN 81-70 has provided us with the framework for the design of safe, accessible passenger lifts for all. The presenter represented BSi on the standard’s European drafting committee and therefore has insight into the new standard. This paper will present the key changes we will see in the new document, and the thinking behind them.

Creating Passengers in Batches for Simulation

Richard Peters and Sam Dean

Lift passengers often travel together in groups rather than alone. In passenger generation for lift simulation these groups are referred to as batches, with the distribution of batch sizes sometimes presented in tabular form. This paper demonstrates how this distribution of batch sizes can be described as a Poisson process.

My History of Lift Traffic Design 1960 – 2020

Gina Barney

This paper, relying on the first 60 years of lift traffic design presented by Lee Gray at LES 2017 presents a view of the developments in lift traffic design since 1960. The paper will look at the contributions of, amongst others: Alexandris, Barney, Beebe, Closs, Dos Santos, Godwin, Lim, Peters, Port, Schroeder and Strakosch. The paper will demonstrate how lift traffic design is intertwined with lift traffic control algorithms, including Call Allocation control systems and interactive lift system simulation during the same period.

 
17:30 CLOSE
 

Participant fee £50 (students and apprentices £25).

 

To register please click here