Specifying Door Hardware – Tips for Interior Designers & Architects

Handle by adrazahl, on FlickrI am often surprised by how difficult interior designers and architects find the process of specifying door hardware. I have seen even relatively experienced interior designers or architects have a look of fear (or perhaps I’m mixing up the glazed eyes of boredom?) when I’ve asked them to prepare the door hardware schedule for a project. Door hardware specifications are also something that frequently go wrong on a project, and on a larger project such as a hospital or in a specialised secure environment, these mistakes can have much more significant cost consequences than we imagine ($40K worth of door hardware can be a bit of a shock, but I’ve heard of that happen, thankfully that wasn’t my own project!) One of the project managers that I used to work with regularly asked why we could not just specify the same door hardware on every project?

So why can’t we have the same door hardware on every project? It’s not just the capricious will of the interior designers or architects as perhaps some project managers sometimes think.  It is the fact that there are different performance requirements for doors on each project which often are based on differing client requirements for specific security, acoustics and even aesthetics (I had one client who had a fetish for sliding doors). I will admit is also true that there are also different aesthetic requirements on the part of the interior designer or architect as well.

In my opinion there are several difficulties we encounter when specifying door hardware:

  1. There are many objects that make up ‘door hardware’ and its not something that seems to be taught to students of architecture or interior design. If all goes smoothly on site, door hardware is not something that is examined in detail.
  2. The way that door hardware is often demonstrated in supplier images is frequently mystifying to the uninitiated – the lock or handle might be shown individually rather than any images of how it fits onto the door or with another piece of hardware. Often component parts are not clearly identified. I always found it quite hard to learn from supplier catalogues without any other explanations or understanding.
  3. There is then the challenge of getting all of the parts of the door and its hardware to coordinate together – in particular the door frames, the door handles and locks and the door seals – which come from different suppliers. Again the product information is often not clear enough to enable specifiers to be sure if their selections fit together, and because we are all trying to keep documentation costs down, hardware & seals are infrequently detailed.
  4. Finally the door hardware schedule itself tends to be quite detailed and often number or code heavy document which makes reviewing items against product information time consuming and checking onerous.

For these reasons interior designers and architects often rely on the door hardware representative to prepare the schedules for them. Whilst this is a very useful service, the interior designer or architect still needs to have some knowledge of door hardware. They have to be able to brief the door hardware specifier on the client requirements and communicate with the security consultants. If the interior designer doesn’t understand the details of door hardware it may be difficult for them to communicate these requirements. Someone also needs to check the schedule – just the same as you would have someone review something that was prepared in your own office.

My tips for specifying door hardware

  1. When you are learning – Work with an experienced door hardware specifier, this could either be someone in your office or a supplier. But don’t just expect them to prepare the schedule. Ask questions so that you start to understand what the hardware is actually being specified. Look up the information, diagrams or images in the catalogue to see if you can actually understand what it is being illustrated and ask questions if you don’t.  Look at door hardware on site too.
  2. Personally when briefing the door hardware consultant I like to use a door by door Revit schedule identifying the hardware requirements for each door and my selected hardware models. I ask the door hardware specifier to let me know if they disagree with any of my selections or have alternatives to offer. Here is an example.
  3. If you have specific situations where clearances are key, for example clearances between door handles and door frames on sliding door, prepare a fully detailed drawing to illustrate how the sliding door is supposed operate. Whilst it takes a bit more time, that way you won’t end up with a situation with people jamming fingers or handles installed on the glass when they were supposed to be on the stile. If there is a drawing and it doesn’t work the builder should come back to you with an RFI. This has saved me more than once. Once you have set up the details once, they don’t take too long to modify for slightly differing hardware configurations.  Here is an example.
  4. If you have electronic security or specific client security needs such as requirements for dual locking systems you may have to spend more time working through with the door hardware and coordinating with the security consultant on the details. The interiors/architectural hardware schedule needs to identify which doors have electronic security as well as include any physical security the security consultant requires.
  5. If RFIs come up in relation to the door hardware and you know the builder has substituted items ask the builder for the code numbers of the substituted items and make a record of this for the next time you specify. This is good practice with any RFI. I keep a list of all documentation errors, omissions or misunderstandings discovered on each project after tender stage (regardless of if our team found them, the builder queried issues or something just didn’t look right in the final product).
  6. If you have come up with a set of hardware that all works together, can you use it again? If it meets the project requirements there is no reason why not!

Do you have any tips for door hardware specifications and schedules? Do you have any questions on door hardware? Does anyone actually like specifying door hardware?

Image credits:

Creative Commons Attribution-No Derivative Works 2.0 Generic License  by  adrazahl 

Cost Planning for Interior Design Projects

6736154311_9a0a3a44ba_nA few months ago over drinks (many of The Midnight Lunch posts will probably be inspired this way…) I was chatting to a fellow lead interior designer who asked me about how I managed construction costs and dealt with quantity surveyors.  That conversation was one of the things I though of when I decided to start up The Midnight Lunch blog – how often is it that we get together with colleagues outside of our own teams and discuss and compare how we do things.  For most of us, I suspect not very often.

Particularly in the last few years since the financial crisis, project budgets have become more and more of an issue for clients and interior design teams alike.  There are some interior designers out there who believe that managing the construction costs is not an interior designers role – that it is the job of the project manager or quantity surveyor.  There are also some clients who believe it is better not to tell the interior designer what the budget is for fear that they will spend it all.  I disagree with both of these views.  It is the job of all team members to have some level of understanding of the budget and what impacts that could have on their discipline.  Is the job on a tight budget where every cent will count, or is the client more concerned with the level of quality?  Whichever the case, the client almost always has a budget constraint (I think we would all agree that an unlimited budget project would be the exception).  Clients – please tell your interior designers the budget.  We are not out to spend every cent.  If we don’t know and understand your budget we can’t use our skills to help you.

By understanding the clients budget and by the client placing trust in the design team to work to their budget, the design team are better able to present and discuss options with the client which achieve better design outcomes, meet client expectations and are realistic within the budgetary framework.  This cannot be achieved by a quantity surveyor alone as they usually do not fully understand the project design objectives and criteria, and nor is it their job to.  No one team member be they interior designer, quantity surveyor or project manager can usually understand the full scope of the clients detailed design and performance expectations.  Designers need to be involved in the discussion of overall design quality, fittings, furniture and the like and engineers frequently need to provide further more detailed breakdowns of what they are costing and specifying.  It is only through discussion of particular scope areas or disciplines can the design team leader make informed recommendations to the client, to allow the client to make an informed decision (in the end it is their money).  This is real value management, rather than value management as a term which these days has often come to mean cost cutting.

My key tips for value management and cost planning for interior designers are as follows:

  1. If a client wants a cost estimate that is more detailed that a mere dollars/sqm rate use a quantity surveyor (QS).  Interior designers should understand what the dollars/square meter rates in their area of specialisation will actually buy/the level of fitout quality that can be expected/the average costs.  Be able to compare your previous projects.
  2. Brief the QS.  I find that frequently the QS will start out costing a very basic level of fitout and needs further direction.  Room data sheets can be a useful tool to brief the QS on more detailed items such as whiteboards and pinboards that might otherwise be forgotten (look out for another blog post soon on Room Data Sheets).  Ask the QS to include allowances for things like feature finishes, ceilings or specialist joinery that you haven’t yet fully thought out but you know you are planning to include.
  3. Understand the cost of large or propriety items within the interiors package.  Get quotes for operable walls, workstations, furniture or major equipment items.  Talk to the QS about your expectations of what allowances should be made for these items.  You should understand what you intend to specify and the quality expected for the project.  I’ve just lately started looking at how this can be managed inside of the Revit model too.
  4. Understand the engineering estimates.  When you work with engineers who are good at explaining and value managing their components of the works learn as much as you can. On a future project you are then better able to question and discuss options with another engineer who might be prone to overdesign. (I know you engineers really want the client to have that super duper new blade server – but really do their management know what they are paying for?)
  5. Review the QS cost plan, preferably before it goes to the client (though that is usually only practical if you have engaged the QS).  Sometimes even with a good briefing they misunderstand your design intent or simply miscount (or maybe there are errors in your room data sheets).  If the cost plan is way over budget at this point maybe their are opportunities to pull back in a few areas before the client sees this version.  Conversely if the project is well under budget (does this ever happen?) maybe you can add more allowances in.  Make sure that the cost plan includes both design contingency and construction contingency.  Most of all I think its important to make sure the cost plan is a true reflection of the clients expectations regarding quality.
  6. Update the cost plan periodically throughout the project, continue to discuss and make value management decisions as you design in conjunction with the other design team members.  For the size projects I usually deal with (mostly in the $1 million – $5 million construction cost range), I find 3 to 4 iterations of the cost plan about right.  One at concept stage where a lot of issues are still fuzzy and perhaps some significant design options are being investigated, one at around 60% stage where the details are more developed and a pre-tender cost plan.  For a larger project this would be a more ongoing basis and the QS might even be present at weekly project meetings.
  7. Keep the client informed.  The biggest problems occur when either the client does not understand a mismatch between their budget and quality expectations or when costs go up from the original cost plan and the client hasn’t been kept informed.  It does seem obvious that if they add scope (eg double the amount of major signage/graphics) that this would add cost, but I find that it’s best for someone (which could be the PM or the interior designer depending on the team structure) to make sure of this.  I have had these scenarios occur and it led to some difficult meetings (and in one case legal action – surprisingly by us and not the client).

What are your tips for managing the construction costs?  Would you rather go direct to the construction contractor market than use a QS?  Who do you think is responsible on the interior design project team for managing the budget?  What are you best or worst stories of cost planning and budget management for interior design?  Do you disagree with any of the tips above?

Image Credits:
Creative Commons Attribution-Share Alike 2.0 Generic License  by  401(K) 2013