I am carrying out an AASHTO timber dock design and want to make use of the load sharing factor (1.15). Please advise what the requirements are for making use of this factor. I am working in the UK and unable to obtain a copy of AASHTO at present. (i.e. I plan to space 6 no. stringers on 10...
I have not used it in the two way manner described for the flange. This sounds a little more complex than what I have done. I would be very interested to know how you did this. What I have done is to copy a column (highlight total column) of command figures produced in excel and paste into...
Funny that. I have been considering soil cement for a project in the Bahamas also - on Cat Island. You may find the US Army doc @ www.usace.army.mil/inet/usace-docs/eng-manuals/em1110-2-1913/a-g.pdf of some use however it would seem the only way to obtain any truely relevant mix proportions...
What is the main difference between welded wire fabric gabions and double twisted hexagonal mesh gabions. Is the twisted hexagonal mesh stronger/more durable/more desireable? Why?
Have these been used for coastal protection where 6 foot waves or similar may occur during hurricanes? What are their major advantages/disadvantages over seawalls. Any examples/information greatly appreciated.
Have these been used for coastal protection where 6 foot waves or similar may occur during hurricanes? What are their major advantages/disadvantages over seawalls. Any examples/information greatly appreciated.
What guidance is available on the calculation of bending & shear moment calculation methods for a multi span reinforced concrete bridge? Thanks in advance.
What are the main problems associated with using an aggregate in a marine environment with a water absorbtion of 4.5% say? Usually less than 3% is required. Can the concrete design be changed to accomodate for this poor quality in the aggregate? Thanks in advance.
Thanks so much for your comments. We are going to carry out some trial and error casts. I will post the outcome. In the meantime my mix design is as follows;
Cement type 1
3000psi strength at 28 days
3/4" nominal aggregates
.55 water cement ratio
500lb/cu yd min cement content
slump...
I am casting 2'6" * 2'6" * 5'0" concrete blocks for use in seawall construction. Small bubbles are seen on the surface of the cast blocks (especially on sloping faces). I am considering the use of plasticiser to improve the quality of the blocks. What type and quantity of...