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Stoneleigh P2-LR001003
ALPHA TESTING, INC. 2209 Wisconsin St., Suite I00 Dallas, Texas 75229 972/620-8911 - 972/263-4937 (Mefro) FAX: 972/406-8023 October 3, 2000 SPRING VALLEY CONSTRUCTION 10950 Alder Circle Dallas, Texas 75238 Attention: Mr. Keller Webster Re: Lime Slurry and Water Pressure Injection STONELEIGH AT RIVERCHASE Buildings 2 and 3 Coppell, Texas ALPHA Report No. 00652-19 Submitted herewith are results of our analysis of lime slurry and water pressure injection conducted at the above referenced project. Our analysis consisted of sampling soils after lime slurry and water pressure injection to a depth of 7 ff and performing moisture content, pocket- penetromcter and absorption swell tests on representative samples. Sampling of the injected soils using test borings was performed on October 3, 2000. A total of six (6) test borings (Borings 1-6) were performed at the approximate locations shown on Figure 1, the Boring Location Plan, to obtain samples of the injected soils for laboratory testing. Individual test results are presented on summary data sheets attached to this report. According to the project geotechnical report (re: ALPHA Report No. 98611 dated August 25, 1998), acceptance of lime slurry and water pressure injection should be based upon attaining an average free swell of I percent, or less, from soils within the injected zone. Results of current moisture content tests (Figure 2) indicate the average moisture content of the injected soils at each boring location varies from about 18 to 22. Results of absorption swell tests conducted on samples from the injected zone indicate free swells ranging fi'om about 0.1 to 1.6 percent and averaging about 0.6 percent. Based on results of current moisture content tests and absorption swell tests, it is our opinion the present flee swell within/he injected soils in Buildings 2 and 3 conforms to the project criteria of I percent, or less. Therefore, it is recommended the lime slurry and water pressure injection at Buildings 2 and 3 be accepted. We appreciate the opportunity to be of service to you on this project. If we can be of furth~ assistance, please contact our office. --'"':, ~--': .,,_as'~. Sincerely yours, _,-"...-.'.,.,.- ..c ~,.,y' ~ ~;/ -?-..,..._...~.'...l ~rm,'rzs'n~t;, [ . P....:. .......... ,,..4 '~~_ ~ Manager of Engineering Services DAL/pc Attachments Copies: (3) Client (1) John Danna, A.I.A. (3) City of Coppell RivERCHASE SI~I:NG~r.r.~~~ BOR/NG LOCAT*ICe~ [3s. LUL~, ?lgXAS BL,DG #2 & #3 ~o ~ 00652-19 10/10/00 MOISTURE CONTENT BORING #1 BORING ~ BORING #3 DEPTH % MOIST. HAND PEN DEPTH % MOIST. HAND PEN DEPTH % MOIST. HAND PEN 0-1 19.3% 1.5 0-1 19.3% 2.75 0-1 19.4% 0.5 0-1 30.0% 0.75 0-1 17.4% 2.5 0-1 13.9% 4.5 1-2 25.2% 0.75 1-2 17.1% 3.25 1-2 14.9% 3.25 1-2 23.3% 0.75 1-2 18.1% 4.5 1-2 20.3% 1.25 2-3 10.3% 4.5 2-3 24.6% 1.5 2-3 20.9% 1.25 2-3 18.3°/o 2.5 2-3 19.5% 1.75 2-3 20.5% 1.75 3-4 24.4% 2.25 3-4 17.0% 3.0 3-4 18.2% 3.25 3-4 17.0% 2.25 3-4 18.2% 2.25 3-4 17.9% 1.5 4-5 21.4% 3.25 4-5 18.5% 3.0 4-5 17.9% 1.5 4-5 15.6% 2.5 4-5 18.4% 2.5 4-5 14.1% 1.5 5-6 19.7% 1.0 5-6 11.1% 4.5+ 5-6 17.6% 3.5 5-6 13.2% 3.75 5-6 22.6% 3.0 5-6 20.0% 2.75 6-7 15.0% 3.5 6-7 25.3% 2.0 6-7 17.0% 2.75 6-7 18.3% 3.25 6-7 21.5% 2.0 6-7 16.7% 3.5 Spring Valley Construction Laboratory Test Data IlMIm, Tern ~ ~., 2 _.. ":~ ~ -~ Stoneidgh At Riverchase 00652-19 10/03/00 MOISTURE CONTENT BORING ~ BORING #5 BORING ~ DEPTH % MOI~I'. HAND PEN DEPTH % MOIST. HAND PEN DEPTH % MOIb-'T. HAND PEN 0-1 27.3% 0.25 0-1 16.9% 0.75 0-1 17.1% 1.0 0-1 23.5% 0.25 0-1 20.9% 0.75 0-1 22.2% 2.75 1-2 22.5% 1.25 1-2 17.6% 1.5 1-2 16.4% 1.5 1-2 22.1% 1.75 1-2 16.7% 2.75 1-2 12.3% 1.5 2-3 21.0% 1.5 2-3 14.7% 2.75 2-3 13.7% 2.5 2-3 26.0% 0.75 2-3 17.3% 3.25 2-3 18.5% 2.5 3-4 22.3% 2.0 3-4 15.1% 3.25 3-4 25.9% 1.75 3-4 16.8% 2.75 3-4 15.1% 4.0 3-4 13.7% 3.5 4-5 31.7% 2.0 4-5 20.9% 2.75 4-5 22.3% 2.0 4-5 24.8% 0.75 4-5 17.5% 3.5 4-5 16.6% 3.0 5-6 15.6% 2.0 5-6 20.5% 2.0 5-6 22.6% 2.0 5-6 20.4% 2.5 5-6 21.5% 1.75 5-6 17.6% 3.5 6-7 17.5% 4.5+ 6-7' 23.4% 0.25 6-7 23.5% 2.75 6-7 13.4% 2.0 6-7 20.0% 1.75 6-7 27.1% 2.75 Spring Valley Construction Laboratory Test Data Dallas, Texas Figure 2 Stoneleigh At Riverchase 00652-19 10/03/00 ABSORPTION SWELL TEST DATA BORING NO ..................................... 1 I 2 2 3 3 DEPTH, FT' .................. 2-3 5-6 1-2 6-7 0-1 4-5 DRY UNIT WEIGHT, PCF ................... 125 102 105 102 109 114 UQUID MMIT, % .......... PLA8'T1C uMrr, % .......... PLASTICrTY INDEX (PI). .................... INITIAL MOI~FURE CONTENT, % ........ 10.3 17.0 18.1 21.9 13.9 14.7 FINAL MOISTURE CONTENT, % ......... 12.6 20.6 21.4 23.7 17.4 16.7 PERCENT FREE 8WELL .................... 0.1 0.1 1.6 1.0 0.9 0.1 BORING NO ...................................... 4 4 5 5 6 6 DEPTH, FI' ................. 3-4 5-6 2-3 4-5 2-3 4-5 DRY UNIT WEIGHT, PCF ................... 99 106 108 106 110 105 UQUID UMn', % ......... ~ UMIT, % ....... ~ INDEX (~ .................... INITIAL MoI~rURE CONTENT, % ........ 21.4 19.0 17.3 17.5 18.5 16.6 FINAL MOISI'U~E CONTENT, % ......... 25.3 20.3 19.3 20.0 19.1 17.8 J~qcENT ~ ~ .................... .0.2 0.5 0.1 1.0 0.9 0.3 Spring Valley Construction ~ ~k Laboratory Test Data Dallas, Texas ~~,~ Figure 3 Stonek4gh At mverehase 00652-19 10/03/00 CoppeH, Texas .