82 



: CONSTRUCTION AND SERVICE 



order that the crosstie blocks may be set into each side of the 

 form, it is necessary to saw a notch in E. 



The length of these forms and the location of the notch 

 cannot be determined accurately until the wall is built up to 

 the top of the first form. Then the top of the form should 

 be sawed so that it will be flush with the top of the crosstie 



when the top of the 

 crosstie is level with the 

 wall mortar joint. The 

 notch will then be of a 

 depth equal to the width 

 of the block and wide 

 enough to permit the 

 crosstie block to rest 

 loosely between the out- 

 er and the inner form. 

 The necessity of this 

 will be readily seen in 

 Fig. 27. The inside 

 corners formed by B, C, 

 and E should be filled 

 with a three-cornered 

 strip, which causes the 

 concrete door frame to 

 be chamfered, leaving 

 smooth work. 



In the 2x6's, lettered 

 F, Fig. 26, holes should be bored and J^-inch bolts used. 

 Holes should also be bored in the end of members A and 

 notches made as indicated. Holes should also be bored in A 

 for a long bolt to extend through the inner portions of the form. 

 The inner portion of the form is built as follows : Mem- 

 bers, lettered G, are cut, and to them are nailed 10-inch 



Fig. 28. 



Wooden door for continuous door- 

 way. 



