Chemical-Resistant Brick or Tile, Subcontract (also known as acid-proof brick).Typical prices for chemical-resistant brick or tile meeting ASTM C-279, types I, II, and III requirements. Installed with 1/8" thick bed and mortar joints over a membrane of either elastomeric bonded to the floors or walls, sheet membrane with a special seam treatment, squeegee hot-applied asphalt, cold-applied adhesive troweled on, or special spray-applied material. The setting bed and joint materials can be either 100% carbon-filled furan or phenolic, sodium or potassium silicates, silica-filled epoxy, polyester, vinyl ester or other special mortars. Expansion joints are required in floor construction, particularly where construction joints exist in the concrete. Additional expansion joints may be required, depending on the service conditions to which the floor will be subjected. Brick or tile will be either 3-3/4" x 8" face, 1-1/8" thick (splits); 3-3/4" x 8" face, 2-1/4" thick (singles); or 4" x 8" face, 1-3/8" thick (pavers). Costs are based on a 2,000 SF job. For smaller projects, increase the cost 5% for each 500 SF or portion of 500 SF less than 2,000 SF. For scheduling purposes estimate that a crew of 4 can install 75 to 100 SF of membrane and brick in an 8-hour day. These costs assume that the membrane is laid on a suitable surface prepared by others and include the subcontractor’s overhead and profit.
Typical installed costs for chemical-resistant brick or tile (acid-proof brick), installed
  Less complex jobs SF 34.10
  More complex jobs SF 41.40
  Minimum job cost LS 22,400.00
Concrete Block Retaining Walls Includes mortar, regular block, U-block, inspection block (for walls six courses high or higher) grout, cavity caps and No. 5 reinforcing steel. Equipment is a trailer-mounted 15 CY per hour grout pump, locally rented. Add the cost of wall foundations from the section that follows. For more detailed coverage of concrete block retaining walls, see National Concrete & Masonry Estimator, http://CraftsmanSiteLicense.com
Craft@Hrs Unit Material Labor Equipment Total
Retaining wall with one lintel block course and grouted and reinforced vertical cells at 16" O.C.
      3' - 4" high wall M1@.504 LF 15.40 23.60 3.02 42.02
      4' - 0" high wall M1@.576 LF 18.50 27.00 3.45 48.95
      4' - 8" high wall M1@.648 LF 21.10 30.40 3.89 55.39
      5' - 4" high wall M1@.720 LF 23.80 33.70 4.32 61.82
      6' - 0" high wall M1@.793 LF 26.40 37.10 4.76 68.26
      6' - 8" high wall M1@.864 LF 29.00 40.50 5.18 74.68
      7' - 4" high wall M1@.936 LF 31.70 43.80 5.61 81.11
      8' - 0" high wall M1@1.01 LF 34.30 47.30 6.06 87.66
Retaining wall with one lintel block course and grouted and reinforced vertical cells at 32" O.C.
      3' - 4" high wall M1@.454 LF 13.10 21.30 2.72 37.12
      4' - 0" high wall M1@.526 LF 15.50 24.60 3.15 43.25
      4' - 8" high wall M1@.598 LF 17.60 28.00 3.59 49.19
      5' - 4" high wall M1@.670 LF 19.70 31.40 4.02 55.12
      6' - 0" high wall M1@.743 LF 21.90 34.80 4.46 61.16
      6' - 8" high wall M1@.814 LF 24.10 38.10 4.88 67.08
      7' - 4" high wall M1@.886 LF 26.20 41.50 5.31 73.01
      8' - 0" high wall M1@.958 LF 28.40 44.90 5.75 79.05
Retaining wall with one lintel block course and grouted and reinforced vertical cells at 48" O.C.
      3' - 4" high wall M1@.436 LF 12.30 20.40 2.61 35.31
      4' - 0" high wall M1@.508 LF 14.40 23.80 3.05 41.25
      4' - 8" high wall M1@.580 LF 16.40 27.20 3.48 47.08
      5' - 4" high wall M1@.652 LF 18.40 30.50 3.91 52.81
      6' - 0" high wall M1@.725 LF 20.40 34.00 4.35 58.75
      6' - 8" high wall M1@.797 LF 22.40 37.30 4.78 64.48
      7' - 4" high wall M1@.869 LF 24.40 40.70 5.21 70.31
      8' - 0" high wall M1@.941 LF 26.40 44.10 5.64 76.14

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