Chambers Truss
STANDARD RESPONSIBILITIES DOCUMENT, WTCA 1-1995
6.0 TRUSS DESIGNER RESPONSIBILITY
6.1 Prepare the Truss Design Drawings in conformance with the requirements set forth in the latest approved edition of ANSI/TPI 1-I995 "National Design Standard for Metal Plate Connected Wood Truss Construction.
6.2 For each Truss Design Drawing, set forth as a minimum the following:
6.2.1 Slope or depth, span and spacing;
6.2.2 Location of all joints;
6.2.3 Required bearing widths;
6.2.4 Design loads as applicable:
6.2.4.1 Top chord live load (including snow loads):
6.2.4.2 Top chord dead load;
6.2.4.3 Bottom chord live load;
6.2.4.4 Bottom chord dead load;
6.2.4.5 Concentrated loads and their points of application, and
6.2.4.6 Controlling wind and earthquake loads;
6.2.5 Adjustments to lumber and metal connector plate design values for conditions of use;
6.2.6 Each reaction force and direction:
6.2.7 Metal connector plate type, size, thickness or sage, and the dimensioned location of each metal connector plate except where symmetrically located relative to the joint interface-,
6.2.8 Lumber size, species, and grade for each member;
6.2.9 Connection Requirements for:
(a) Truss to Truss girder,
(b) Truss ply to ply; and
(c) Field splices;
6.2.10 Calculated deflection ratio and/or maximum deflection for live and total load;
6.2.11 Maximum axial compression forces in the Truss members to enable the Building Designer to design the size, connections and anchorage of the permanent continuous lateral bracing. Forces may be shown on the Truss Design Drawing or on supplemental documents; and
6.2.12 Required permanent Truss member bracing location.
This material may not be reproduced without the written permission of the Wood Truss Council of America (WTCA). Contact WTCA at www.woodtruss.com.