Loading...
Stoneleigh P2-LR001021ALPHA TESTING, INC. 2209 Wisconsin St., Suite 100 Dallas, Texas 75229 972/620-8911 - 972/263-4937 (Metro) FAX: 972/406-8023 October 21, 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 5, 8 and 9 Coppell, Texas ALPHA Report No. 00652-24 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 ft and performing moisture content, pocket- penetrometer and absorption swell tests on representative samples. Sampling of the injected soils using test borings was performed on October 21, 2000. A total of 12 test borings (Borings 23-34) were performed at the approximate locations shown on Figure 1, thc 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 1 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 20 to 24. Results of absorption swell tests conducted on samples from the injected zone indicate free swells ranging from about 0.1 to 1.7 percent and averaging about 0.7 percent. Based on results of current moisture content tests and absorption swell tests, it is our opinion the present free swell within the injected soils in Buildings 5, 8 and 9 conforms to the project criteria of 1 percent, or less. Therefore, it is recommended the lime slurry and water pressure injection at Buildings 5~ 8 and 9 be accept. Geo~E~ · ~ Matedafs r~ ~ ~ta~Eng~lee,-fr~ ~ Consu/flng We appreciate the opportunity to be of service to you on this project. If we can be of further assistance, please contact our office. ~.~,I~ :....¥:2...r_~,.1.~, Sincerely yours, ~,,-,~ >-."- .:' '.....-~.,~ ~,**,"- ~: "'~,~' \",'t ALPHA TESTING, INC. ~t~..~ Manager of Engineering Services DAL/pc Attachments Copies: (3) Client (1) John Danna, A.I.A. (3) City of Copp¢ll RivERCHASEDRIVE _ \ DAr.fAS, ~ ~ FZ(73R~ 1 ~° ~ 00652-24 10/21/00 MOISTURE CONTENT BORING ~23 BORING #24 BORING ~5 DEPTH % MOIST. HAND PEN DEPTH % MOIST. HAND ~EN DEPTH % M(NST. HAND PEN 0-1 27.0% 1.0 0-1 24.9% 3 0-1 23.1% 1.5 0-1 23.6% 1.5 0-1 22.0% 2.75 0-1 19.2% 1.0 1-2 24.6% 1.0 1-2 24.1% 1.5 1-2 24.3% 1.5 1-2 11.1% 1.0 1-2 17.6% 2.25 1-2 18.8% 2.5 2-3 20.4% 2.0 2-3 22.2% 2.25 2-3 26.9% 2.5 2-3 12.6% 2.0 2-3 26.7% 3.0 2-3 20.1% 2.5 3-4 20.6% 2.25 3-4 22.8% 2.75 3-4 25.3% 1.75 3-4 20.0% 3.75 3-4 22.2% 4.0 3-4 18.8% 1.75 4-5 23.5% 1.75 4-5 26.9% 2.0 4-5 19.6% 1.0 4-5 15.3% 2.75 4-5 26.4% 2.0 4-5 24.6% 1.0 5-6 23.4% 3.0 5-6 16.5% 2.0 5-6 25.2% 2.0 5-6 '15.7% 3.0 5-6 21.8% 2.0 5-6 19.5% 2.25 6-7 26.2% 2.75 6-7 17.9% 2.0 6-7 20.3% 1.25 6-7 23.0% 2.75 6-7 19.8% 2.25 6-7 21.0% 2.75 Spring Valley Construction Laboratory Test Data DMlm, T~ Fi~m~ 2 S~mek~h At Riverchase MOI~I'URE CONTENT BORING ~26 BORING f27 BORING 128 DEPTH Ye MOIST. HAND PEN DEPTH % MOIST. HAND PEN DEPTH % MOIST. HAND PEN 0-1 19.8% 3.0 0-1 24.7% 1.0 0-1 18.4% 1.75 0-1 23.8% 1.0 0-1 20.5% 2.0 0-1 21.7% 2.25 1-2 26.7% 0.5 1-2 17.8% 2.0 1-2 19.8% 2.5 1-2 19.5% 1.0 1-2 24.1% 4.0 1-2 23.0% 2.5 2-3 25.7% 1.0 2-3 21.7% 1.5 2-3 21.0% 2.0 2-3 22.2% 2.5 2-3 24.1% 2.5 2-3 22.0% 2.0 3-4 24.2% 1.5 3-4 23.1% 1.75 3-4 19.4% 3.0 3-4 17.7% 1.5 3-4 22.1% 2.75 3-4 24.0% 3.0 4-5 33.2% 1.5 4-5 17.6% 2.0 4-5 31.3% 2.0 4-5 19.1% 1.75 4-5 23.1% 2.0 4-5 22.3% 2.0 5-6 28.7% 0.5 5-6 17.9% 2.75 5-6 30.4% 2.25 5-6 29.5% 1.5 5-6 22.4% 3.0 5-6 25.5% 3.25 6-7 22.4% 2.0 6-7. 26.7% 0.75 6-7 18.4% 2.5 5-7 20.3% 2.0 5-7 22.4% 2.5 5-7 19.7% 3.0 Spring Valley Construction Laboratory Test Data DMim, Tm Filzure 2 Stonddgh At Riverchase 006S2-24 MOISTURE CONTENT BORING #29 BORING #30 BORING #31 DEPTH % MOIST. HAND PEN DEPTH % MOIST. HAND PEN DEPTH % MOIST. HAND PEN O- 1 36.2% 0.5 0-1 17.8% 1.25 0-1 28.9% 0.5 0-1 19.2% 1.75 0-1 19.7% 4.25 0-1 20.2% 1.5 1-2 19.8% 1.5 1-2 17.1% 1.25 1-2 20.0% 2.0 1-2 13.4% 4.25 1-2 12.8% 1.75 1-2 17.3% 2.5 2-3 19.4% 3.5 2-3 22.1% 2.5 2-3 27.0% 2.5 2-3 19.9% 3.5 2-3 22.5% 2.5 2-3 19.8% 3.5 3-4 19.9% 3.0 3-4 16.6% 2.0 3-4 25.8% 3.25 3-4 19.2% 1.0 3-4 21.5% 3.0 3-4 23.0% 2.5 4-5 36.3% 3.5 4-5 18.8% 2.0 4-5 19.0% 2.5 4-5 21.7% 3.5 4-5 27.8% 1.0 4-5 23.1% 3.5 5-6 17.7% 2.75 5-6 18.2% 2.0 5-6 24.8% 2.5 5-6 25.1% 2.5 5-6 20.6% 2.5 5-6 17.9% 3.25 6-7 17.6% 1.0 6-7 23.0% 2.5 5-7 23.9% 4.25 6-7 19.8% 1.5 6-7 22.6% 2.5 6-7 12.7% 2.25 Spring Valley Construction Laboratory Test Data DMlm, Texas Figure 2 StonH-'_,~ At Riverchase MOISTURE CONTENT BORING #32 BORING #33 BORING #34 DEPTH % MOIS'F. ~.IAND PEN DEPTH % MOIST. HAND PEN DEPTH % MOIST. HAND PEN 0-1 22.7% 0.5 0-1 19.4% 1.5 0-1 25.9% 0.00 0-1 16.8% 2.0 ~ 0-1 23.3% 2.0 0-1 30.3% 0.00 I 1-2 15.5% 3.0 1-2 25.2% 2.0 1-2 20.3% 2.5 1-2 17.4% 3.0 1-2 19.9% 3.0 1-2 15.6% 2.5 2-3 9.1% 4.5+ 2-3 13.8% 2.75 2-3 21.8% 1.0 2-3 10.3% 4.5+ 2-3 14.9% 2.75 2-3 18.8% 2.25 3-4 22.4% 2.25 3-4 17.5% 3.25 3-4 19.2% 1.5 3-4 23.8% 2.25 3-4 21.6% 3.25 3-4 18.6% 2.0 4-5 16.3% 2.5 4-5 27.0% 2.0 4-5 24.0% 2.0 4-5 27.0% 2.5 4-5 20.8% 2.0 4-5 21.7% 1.5 5-6 33.5% 1.5 5-6 17.6% 3.5 5-6 24.4% 2.5 5-6 22,2% 1,75 5-6 19,5% 3,25 5-6 25,3% 3,0 6-7 19.7% 1.5 6-7 29.0% 2.5 6-7 20.6% 2.25 6-7 20.4% 1.5 6-7 20.5% 3.0 6-7 22.3% 3.5 Spring Valley Construction Laboratory Test Data ~ Texas Figure 2 Stonelei~h At Riverchase 00652-24 10/21/00 ABSORPTION SWELL TEST DATA BORING NO ..................................... 23 23 24 24 25 25 26 28 DEFT'H, FT' .................. 2-3 5-6 2-3 6-7 2-3 5-6 0-1 4-5 DRY UNIT WEIGHT, PCF ................... 100 111 109 108 105 101 99 92 UQUID uMrr, % .......... PLASTlC UMIT, % .......... PLASTICITY INDEX (Pi) ................... INITIAL MOIS'rURE CONTENT, 16 ........ 20.4 16.5 17.6 17.9 20.1 22.1 20.2 28,2 RNAL MOISTURE CONTENT, % ......... 22.5 18.6 20.0 18.1 21.7 24.7 24.0 29.1 PERCENT FREE SWELL. .................... 0.1 0.5 0.2 0.1 1.4 0.1 0.8 0.3 BORING NO ...................................... 27 27 28 28 29 29 30 30 DEPTH, IfF .................. 0-1 5-6 1-2 4-5 2-3 5-6 0-1 4-5 DRY UNIT WBCIHT, PCF ................... 98 101 100 98 103 102 107 105 UQ4JID Lllk'T, % .......... PL),SllCnY INDEX (I) .................. IN/TtAL. MOISTURE COHTENT, %. ....... 21.8 22.4 23.0 22.3 19.7 19.2 17.8 18.8 RNAL MOISTURE CONTENT, % ....... 25.5 25.2 25.6 22.7 29.7 21.7 21.8 24.5 PERCENT FREE 8WELL. .................. 1.1 1.7 0.7 0.6 0.9 0.3 0.8 0.6 BORING NO ................................... 31 31 32 32 33 33 34 34 DEPTH, FT .................. 2-3 5-6 1-2 4-5 2-3 6-7 1-2 5-6 DRY UNIT WEIGHT, PCF ................... 100 103 116 97 116 91 105 98 UQUlD uMrr, % .......... PL,A8TIC LIMIT, % ....... PL,ASTICITY INDEX (PI). ................. INITIAL MOISTURE CONTENT, ~ ..... 19.8 21.7 16.0 16.3 14.4 20.5 20.3 25.1 FINAL MOISTURE CONTENT, % ........ 20.5 26.6 16.7 25.8 15.2 26.7 24.9 25.4 PERCENT FREE SWELL. ................. 0.9 0.3 0.5 0.7 0.8 0.7 1.0 0.8 Spring Valley Construction Laboratory Test Data .I)qilu, Texas Figure 3 81~,At ~tv~,e'_ - at M)652-24 10/21/00 Col)pea, Te,T~J