Job outline sheet Block-BL-III: Jobs calling for the setting of (architectural terra-cotta and) cut-stone trim. Job specification 9: Setting stone keystone and flat arches in a brickfield. Type job a: Setting keystone in a brick arch of any shape. -Job outline sheet Block-BL-III: Jobs calling for the setting of (architectural terra-cotta and) cut-stone trim. Job specification 11: Setting cut-stone trim calling for intersections. Type job a: The setting and anchoring of stone trim in a mullioned window opening. Technical information sheet Block-BL-III: Jobs calling for the setting of (architectural terra-cotta and) cut-stone trim. Job specification 11: Setting cut-stone trim calling for intersections. Type job a: Technical information relating to the setting and anchoring of stone trim in a mullioned window opening. Job outline sheet Block-BL-V: Construction jobs in bricklaying, calling for the laying out and laying up of brickwork, using a variety of materials. Type job 11: Memorial gateway, a combination of brick and cut stone. JOB AND TECHNICAL OUTLINE SHEETS Arranged in progressive order there is included in this section the job and technical sheets on the setting of cut-stone trim in brick buildings. The job outline sheets take up actual type jobs and list the various operations in these jobs. The technical information sheets contain in brief outline form suggestive related technical information covering one or more type jobs, as mentioned before, these sample sheets are intended only for the instructor to assist him in better organizing his training program. Job outline sheet JOB No. 1 Block-BL-III: Jobs calling for the setting of (architectural terracotta and) cut-stone trim. Job Specification 1: Setting a one-piece cut-stone sill. Type Job a: Setting a one-piece cut-stone slip window sill in a panel or curtain wall. PRELIMINARY Cut stone is a material used for both structural and ornamental trim of the exteriors of buildings in combination with brick. This FIG. 1.-Elevation and section showing the manner in which slip sills are used in a panel inclosure wall of a factory-type building is your first experience in using stone in combination with brick, and the slip sill that you are to set is the simplest type of a stone sill and the easiest to place in position. A cross section and elevation of a slip sill are illustrated in Figure 1. Study the illustration carefully before proceeding to set the sill. 1. Marking the location of sill. Locate position and mark on sill and wall. The foreman will mark on the face of the wall the distance of the center of the frame from the corner or from some other definite location. A corresponding mark is made on the face of the wall. If this is not done by the foreman it will be necessary for you to secure this information. It will also be necessary to know the distance that this sill is to project over the face of the wall. You can get this information from the section drawing Figure 2. Having located the position of the sill and the amount of projection, you are now ready to proceed with the setting. 2. Preparing the mortar bed. (a) Clean off top of the wall, which should previously have been laid up to the proper sill height. (b) Examine the sill and see that it is perfectly clean and free from broken edges. MORTAR BED THICKER AT 4X10 ABOUT 1/4 SLIP SILL IS BEDDED IN FIG. 2. Sectional view of a slip sill (c) Wet wall thoroughly and place proper bed of mortar for full length of sill and taper mortar down in thickness. from the back to the front. 3. Placing the sill. (a) Place the sill on the wall in proper position and tamp down into position. (b) Make proper adjustment by forcing down one side, allowing for proper projection of sill over face of wall. (c) Level and check slope. 4. Pointing up. It is the usual practice on slip sills to showing the slope of the sill and point up underneath the sill as soon as the sill has been set. projection over the face of the wall 5. Building up jambs. The brickwork for the jambs is carried up in the usual manner. CAUTIONS 1. Be sure to sweep off and wet wall thoroughly. 2. Cut stone, even of the simplest type, should be thoroughly clean before setting. 3. Cut-stone trim should be protected from falling mortar by pieces of building paper. The carpenter should also fasten boards. over the face of the sill to protect it from being broken during the progress of construction. 4. The weak spots of a slip sill are the end joints where the sill abuts the brick work and the window jambs. Unless these end joints are carefully slushed full of mortar, some water may work through the joints into the brick work below and the sill will not be as effective in protecting the brick masonry as if it were properly set. QUESTIONS 1. Is there any load carried on a slip sill? 2. Why is it easier to set a slip sill than a "lug" sill? Job outline sheet JOB NO. 2 Block-BL-III: Jobs calling for the setting of (architectural terracotta and) cut-stone trim. Job specification 1: Setting a one-piece cut-stone sill. Type job b: Setting a one-piece cut-stone lug sill in a brick wall. PRELIMINARY Previous to this job you should have had the experience of setting LUG SILL MAY BE A TRUE LUG SILL WITH THROATED WASH LIKE THIS OR A PLAIN BEVELED SILL 4" TO 8" LONGER THAN OPENING. CHECK CUT FOR 9/2" 44" FIG. 3.-Perspective and sectional view of a lug sill showing the manner in which lug sills are set in brick walls a simple slip sill in a brick wall of a factory type of building in which a metal window frame was used.2 In this job you are to set a sill which extends into the brick work on the sides. The lug sill which you are now to set is a simple one-piece sill for a double hung, wood frame window of a brick residence, as illustrated in Figure 3. Bulletin No. 95, "Bricklaying," pp. 98-99, Federal Board for Vocational Education, 1925. 1. Locating position of sill. (a) As to height: Check height of brick course which is to form bed of sill to find out if top of sill will conform with height, as mentioned on elevation drawing. (b) As to position on wall: If center openings are indicated on drawing, measure and mark center position of sill on wall, also center of sill. If the width of rough openings are indicated on drawings, these should be marked on wall for the purpose of locating the position of lugs. 2. Stretching the line. In case there are several sills at the same height in the wall, a line should be stretched from corner to corner at sill heights. 3. Preparing the bed. (a) Clean off the top of brick wall and wet brickwork thoroughly. (b) Spread mortar bed to receive ends of sills. 4. Placing and leveling sill. (a) Place sill on the wall with proper projection and see that ends are located over marks on wall. (b) Tamp, level, and line up sill on bed. (c) Check to see if lugs of sill are level. 5. Pointing. The space left open under center of sill is to be pointed up later. This pointing up is frequently left until the cleaning down of brickwork of walls is started. CAUTIONS 1. Always lay or stand the stone on the back or side so that any chipping of edges that might occur in handling will not disfigure the exposed faces and edges. 2. Keep oil, paints, and grease of all kinds away from cut stone, as it leaves a stain which often can not be removed. 3. Nails or other material made of iron or steel, if dropped on a pile of cut stone and left for a few days, will often cause rust spots which are impossible to remove. QUESTIONS 1. How is a lug sill different from a slip sill? 2. Why is the leveling and the lining up of a row of sills important? 3. What might happen if a long sill was set with a solid bed? Job outline sheet JOB NO. 3 Block-BL-III: Jobs calling for the setting of (architectural terra cotta and) cut-stone trim. |