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SECTION 8A: CEMENT AGGREGATE BOTTOM
STEP 1: A BASE FOR THE LINER MADE OF A CEMENT AND VERMICULITE IS VERY STABLE
AND MUST BE USED IN ANY POOL WHERE A WATER PROBLEM EXISTS. THIS "HARD
BOTTOM' IS PARTICULARLY RESISTANT TO FOOTPRINTS, EROSION, AND WASHOUT. IT IS
ALSO LIGHTER AND EASIER TO HANDLE THAN SAND. YOU WILL NEED THE FOLLOWING
EQUIPMENT:
1. PADDLE TYPE MIXER - 8 - 18 CUBIC FOOT CAPACITY
2. WHEELBARROW
3. 5 GALLON PAILS
4. GARDEN HOSE TO REACH MIXER
5. TWO (2) FLEXIBLE TROWELS
6. CONCRETE SHUTE - 4' - 10' PIECE OF VINYL WILL WORK
7. SOFT BRISTLE BROOM
ALWAYS FOLLOW THE MIXING INSTRUCTIONS ON THE AGGREGATE YOU ARE
USING AS THESE DIFFER AS TO THEIR CONTENTS. FOR REFERENCE YOU WILL BE MIXING
AROUND 8 CUBIC FEET OF AGGREGATE TO ONE CUBIC FOOT OF CEMENT WITH
APPROXIMATELY 24 GALLONS OF WATER.
FOR STEEP SLOPED SECTIONS, A STIFFERR MIX SHOULD BE USED. THIS IS DONE BY
ADDING LESS WATER. IF THE MIX IS TOO WET FOR APPLICATION ON THE SLOPES,
TROWEL UP ONLY TO A POINT WHERE THE MIX BEGINS TO SLIDE DOWN. WORK AROUND
THE HOPPER AND WHEN YOU RETURN TO YOUR ORIGINAL AREA, THE MIX WILL HAVE
SET SUFFICIENTLY TO SUPPORT A SECOND "COURSE" ABOVE THE FIRST.
DO NOT INSTALL A HOPPER ON A DAY WHEN RAIN IS PREDICTED.
IF THE GROUND IN THE HOPPER IS VERY DRY OR SANDY, IT IS WISE TO WET IT
DOWN WELL BEFORE APPLYING THE MIX. ALSO ON VERY HOT DAYS. IT MAY BE
NECESSARY TO ADD A LITTLE MORE WATER TO YOUR MIX TO ACHIEVE GOOD RESULTS.
WHEN APPLYING THE MIX TO THE POOL, BEGIN IN THE HOPPER AND WORK UP THE SLOPE
INTO THE FLAT SECTION. AFTER FINISHING THE FLAT AREA. WORK INTO A CORNER AND
GET OUT.
NOTE: AS YOU TROWEL UP TO A GUIDE BOARD, REMOVE THE BOARD AND CONTINUE
ALONG THE NEXT FLAT AREA. DO NOT LEAVE THE BOARDS IN THE POOL AS THEY MAY
RISE UP AND LEAVE MARKS IN THE LINER.
WARNING: BE SURE TO FORM THE CHAMFER (COVE) AROUND THE POOL AS SHOWN
IN THE FINISHED HOLE DRAWING
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