Masonry Magazine May 1965 Page. 15
Toenail joist to sill or anchor to sill with Trip-L-Grip or similar anchors as shown.
Sill
Joist
Fill hollow cores in course supporting floor with concrete or mortar.
min. dia, anchor bolts extending at least 15" into filled cells in the masonry and spaced not more than 6-0 o.c. to anchor sill to wall.
Place wire screen or metal lath in joint under cores to be filled to prevent filling of cores below.
Figure 3
Place metal lath or wire screen over cores to support mortar or concrete fill.
Rake out and caulk to form control joint if exposed to view.
14"x4"x30" strap anchors with 3" right angle bends at each end, at vertical spacings not exceeding 32" o.c.
Embed bent ends in cores filled with mortar or concrete.
Figure 4
anchorage
Sill plates should be anchored to the wall with ½-in. diameter bolts (Figure 3), extending at least 15 inches into filled cells of the masonry units. Anchor bolts should be spaced not more than six feet apart, with one bolt not more than 12 inches from each end of the sill plate.
Ends of floor joists (Figures 3 and 6) should be anchored at intervals of six feet, every fourth joist. Joists parallel and adjacent to the walls (Figure 5) should be anchored also with anchorage at intervals not exceeding eight feet:
Cross bracing at every wall anchor and at intermediate spacings as required.
Floor or roof joists or beams.
Nail anchors to underside or side of joists.
Wall anchors at required intervals (see text). Anchors should have split end embedded in mortar joint or end bent down into block core and core filled with mortar. Length of anchor should be sufficient to engage at least three joists.
Figure 5
Intersecting masonry walls should be anchored to basement walls with metal straps spaced not more than 32 inches vertically. The metal straps (Figure 4) are 30 inches long, ¼ in. thick and 14 in. wide. Rake out mortar at the intersection of the two walls and caulk to form a control joint. This provides for slight longitudinal movement in the construction. Essentially, the same detail (Figure 4) is used to tie nonload-bearing partitions, except when the partition is not intended to serve as a lateral support for the basement wall; strips of metal lath or galvanized hardware cloth may be substituted for steel straps.
Solid unit
Hollow bridging unit
Solid top units in course supporting floor joists.
Wood joists framing into masonry wall. Joists to have min. 3" bearing on masonry.
16"x6" twisted steel plate anchors with one end embedded in horizontal mortar joint. For required anchor spacing, see text.
Figure 6
backfilling
Avoid backfilling the basement walls before the first floor is in place, or brace the walls by some means until the first floor is installed.
The finished grade should be sloped away from the basement walls for good surface drainage. Settlement of backfill material should be anticipated. Operating heavy equipment any closer to a wall than the distance equal to the height of this fill should be avoided.
Figure 7
waterproofing
Clean the exterior side of basement walls, then parge with a 4-in. coat of portland cement-sand plaster. Follow it
RECOMMENDED PROTECTIVE COATINGS FOR WATERPROOFING EXTERIOR FACE OF WALLS:
1) Two ½ inch coats of portland cement plaster, or,
2) One 1 inch coat of portland cement plaster plus two brush coats of bituminous waterproofing, or
3) One heavy troweled-on coat of cold, fiber-reinforced asphaltic mastic.
Gravel or stone fill.
Full mortor joint.
Concrete drain tile.
WELL DRAINED SOILS