STUDDING. PLATES AND C3ILING JOISTS . 



Figs. No. 3 and 4, Cut No. B.M.-6 may be taken 

 os e typical example of standard construction from sill 

 to rafters of all ordinary small Forest Service houses 

 not included in the standard pland. 



STANDARD DIMENSIONS AND DISTANCES 



ON 

 C3NTS3S OF STUDDING, PLATES & CEILING JOISTS 



Studding and plates may be of any sound lumber 

 of any species. Ceiling joists, if to support a ceiling 

 in regions of light or no snowfall should be of 2" x 4" 

 stuff. Where no ceiling is to be supported, ceiling 

 joists are used only to prevent the spreading of the walls 

 of the building. In such cases 1" x 6" sticks are appro- 

 priate. Where snowfall is heavy a large part of the snow 

 load is deflected to the ceiling joists by a system of 

 braces. Under these conditions, it is necessary to have 

 joists possess great strength. Only perfectly sound 

 straight grained sticks 2" x 6", free from all knots 

 larger in diameter than 1 inch are suitable. Ceiling 

 joists must always be nailed securely to the rafters. 

 (See Cut No. B.H.-6 for methods of bracing rafters). 



Where severe wind pressure or side pressure from 

 settling snow is anticipated, the system of braces for 

 studding of exterior walls should be followed as shown in 

 Fig. No. 5, Cut No. B.H.-6. 



B.M. (21) 



