Posted on December 30, 2020

Wide Open Spaces with a Truss System

Gary Pooley | Gary is the Regional Sales Manager for Wells Concrete at our Maple Grove location. With over 30 years of experience in the precast concrete industry, Gary has been involved in the contract development process on thousands of projects. He is currently active as a board member of Minnesota Prestress Association. This, combined with being a past board member of a number of organizations such as: Precast Concrete Institute Midwest, and Precast/Prestressed Concrete Institute (PCI) on a national level where he represented precast providers in the Midwest region along serving on the Construction Advisory Group for Dunwoody Institute, and a past board member of the MN Builders Exchange, gives Gary a unique and valuable perspective in our industry.

Today’s mid-rise and multi-use buildings can include retail space, office space, residential living units, hospitality and parking.7238IslandResort04

The challenge with having multiple users is finding a single structural system that will accommodate the very different floor plate layouts for each without placing load bearing columns and walls in odd areas that will hinder the use of the space.

The parking area requires an open drive lane that is usually 24’ to 26’ wide to support two way traffic with 18’ to 20’ parking stalls on either side. The layout of the housing is driven by the location of the public corridor and gathering areas. Sandwiched between these two areas is often a retail or office space looking for as much open area as possible to customize their floor layout.

The solution is to use a long span precast truss system (ER-POST ™) that spans the width of the Building.  The trusses are supported by precast concrete columns at the perimeter or outside of the structure. Hollowcore precast plank bears on the top and bottom cords of the precast truss.2020-02-05_Island Resort & Casino_OPTION B-1

The precast trusses can span the width of the building up to 80 feet while the hollowcore can span from truss to truss up to 44 feet. Because the truss is both top and bottom cord bearing, they are only required at every other level leaving the levels between completely open. Lateral support can come from the precast stair and elevator walls.

This system gives users the freedom to layout their space without designing around interior columns while taking advantage of the benefits precast concrete. Fire rating values from 1.5 to 3 hours, low sound transition, durability, speed of construction and all weather construction.IslandResort1

Take it a step further and include our Infinite Facade wall system to enclose the structure. Infinite Facade is a lightweight, complete building envelope that meets or exceeds energy and code requirements with optimized performance and flexible aesthetic options. It is composed of an architectural precast concrete skin, factory-installed insulation, factory-installed windows, and a drywall-ready frame. And of course, it all fits perfectly into the precast frame. 

Gary Pooley

You might also like...