Help with creating numerous objects

Hello,

This is my first post on blenderartists.org, so forgive me if I am posting in the wrong place!

I am working on a piece that involves a pier looking out over the ocean. It seems simple, really; I have all of the components necessary to create a very realistic looking model, with everything from various types of boards to pilings…etc. I have been working with Blender for about 2 years, and I feel that the best way to achieve realism in a project is to create things as they are created in the real world (i.e: individual planks for the pier, struts, supports, and so on). This seems simple enough (if not tedious), but I am having a problem: I modeled the pier after a real-life pier, all the way down to the number of planks…which is extremely high given that the pier is 1/6 of a mile in length. This, of course, is no real problem; I can just duplicate the planks as often as I need. However, even when working on a strict size scale, my computer crashes when trying to load all of the duplicated objects…and my file size shoots up to well over 300 MB. I suppose that I am doing something wrong, and, as a programmer, I know how much memory it takes to create 1000’s of objects with all their parameters and such.
Is there anything I can do? I know that certainly there must be a way; I was thinking about creating a single plank (or group of planks) as a parent to many children, if that is legal, but I just don’t know.
Does anyone out there have any ideas?

My specs are:
Dell XPS Studio 16
Windows 7 Home Premium 32 bits
Dual Core P8600 Processor @ 2.4 GHz each.
4 GB DDR3 RAM
Blender 2.49b and Blender 2.5 Alpha 2 (I use both).

My thanks in advance.

Not sure if this will help, but try joining all your planks together into one object. To join an two objects, select both objects and press ‘ctrl-j’.

Not sure if this will help, but try joining all your planks together into one object. To join an two objects, select both objects and press ‘ctrl-j’. That was strange. I just posted… twice!

Look into using the Array Modifier.
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Thanks for all your advice! The array modifier works great.